Heat sealing device for degradable plastic bag

Abstract

The utility model discloses a degradable plastic bag heat sealing device which comprises a base, a supporting table is fixed to the top end of the base, a heat sealing plate is installed at the top end of the supporting table, an electric heating wire is installed in the heat sealing plate, a back plate is fixed to the rear portion of the top end of the base, and a top plate is fixed to the top of one end of the back plate. A telescopic rod is arranged at the bottom end of the hydraulic cylinder, a connecting plate is arranged in the connecting groove, and a positioning pin is installed on the outer side of the connecting groove. According to the utility model, the connecting plate is arranged, the positioning of the connecting plate is relieved by unscrewing the positioning pin, the connecting plate is pushed to a proper position, the connecting plate is fixed in the connecting groove by rotating the positioning pin, and the connecting plate is positioned at the rear end of the heat sealing plate at the moment; a plastic bag opening can be placed on the top of the heat sealing plate, one end of the bag opening makes contact with the connecting plate, and the function of aligning the bag opening is achieved through the connecting plate.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag processing, in particular to a heat sealing device for a degradable plastic bag. Background Art

[0002] Plastic bags are a common daily necessity used to carry items. Plastic bags are made of thin and flammable plastic films. However, plastic bags have a long degradation cycle and are difficult to handle, so degradable plastic bags came into being. Degradable plastic bags refer to plastics that have a certain amount of additives added during the production process to reduce their stability and make them easier to degrade in the natural environment. After the plastic bags are packaged and used, they will be heat-sealed.

[0003] In actual use, the plastic bag mouth is placed on the heat sealing plate and sealed by heat pressing. When placing the bag mouth, the bag mouth is easily placed unevenly, which will cause the heat sealing strip to be tilted, affecting the quality of heat sealing. Therefore, a new type of heat sealing device for degradable plastic bags is proposed to solve the problems pointed out in the above background technology. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model aims to provide a heat-sealing device for a degradable plastic bag to solve the problems raised in the above-mentioned background technology. (II) Utility Model Content

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a heat sealing device for degradable plastic bags, comprising a base, a support platform is fixed to the top of the base, a heat sealing plate is installed on the top of the support platform, a heating wire is installed inside the heat sealing plate, a back plate is fixed to the rear of the top of the base, a top plate is fixed to the top of one end of the back plate, a hydraulic cylinder is installed on the top of the top plate, a telescopic rod is provided at the bottom end of the hydraulic cylinder, a pressure plate is installed at the bottom end of the telescopic rod, a silicone strip is installed at the bottom end of the pressure plate, a connecting groove is fixed to the rear end of the top of the support platform, a connecting plate is provided inside the connecting groove, and a positioning pin is installed on the outside of the connecting groove.

[0008] Preferably, one end of the positioning pin extends to the inside of the connecting groove, and the thickness of the connecting plate is smaller than the inner diameter of the connecting groove.

[0009] Preferably, a slide groove is provided on the inner side of the back plate, a slider is provided inside the slide groove, a connecting rod is fixed to one side of the slider, and one side of the connecting rod is fixedly connected to the rear end of the pressure plate.

[0010] Preferably, the outer diameter of the sliding block is smaller than the inner diameter of the sliding groove, and a sliding structure is formed between the sliding block and the sliding groove.

[0011] Preferably, a reserved groove is provided at the front end inside the support platform, a fixing plate is fixed at the bottom end inside the reserved groove, a spring is fixed on the top of the fixing plate, a baffle is fixed on the top of the spring, and a connecting strip is fixed on the top of the baffle.

[0012] Preferably, a plurality of springs are provided, and the plurality of springs are arranged at equal intervals at the bottom end of the baffle.

[0013] (III) Beneficial effects

[0014] The utility model provides a heat-sealing device for a degradable plastic bag, which has the advantages that: by providing a connecting plate, the positioning pin is loosened to release the positioning of the connecting plate, and the connecting plate is pushed to a suitable position, and the positioning pin is rotated to fix the connecting plate inside the connecting groove, and the connecting plate is located at the rear end of the heat-sealing plate. During heat sealing, the plastic bag opening can be placed on the top of the heat-sealing plate, and one end of the bag opening can be brought into contact with the connecting plate, so that the connecting plate plays a role in aligning the bag opening;

[0015] By providing a slide groove, during heat sealing, by starting the hydraulic cylinder, when the hydraulic cylinder drives the telescopic rod to move downward, the telescopic rod will drive the pressing plate and the silicone strip to move downward, and at this time the pressing plate will drive the connecting rod to make the slider slide inside the slide groove, thereby ensuring the stability of the pressing plate when moving downward, and preventing the silicone strip from deviating when moving downward;

[0016] By providing a baffle, the mouth of the plastic bag can be placed on the top of the heat sealing plate, and the bag body can be placed on the top of the baffle. During heat sealing, the silicone pressure strip will press the bag mouth onto the heat sealing plate. At this time, the pressure plate will move the connecting strip downward, and the connecting strip will cause the baffle to squeeze the spring downward, thereby playing a blocking role and preventing hands from reaching into the heat sealing plate, thereby improving safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 It is a side cross-sectional structural schematic diagram of the utility model;

[0020] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the baffle of the utility model.

[0022] Description of reference numerals in the figures:

[0023] 1. Base; 2. Support platform; 3. Heat sealing plate; 4. Pressing plate; 5. Slide; 6. Hydraulic cylinder; 7. Telescopic rod; 8. Top plate; 9. Back plate; 10. Silicone pressure strip; 11. Heating wire; 12. Connecting plate; 13. Connecting strip; 14. Sliding block; 15. Connecting rod; 16. Baffle; 17. Reserved groove; 18. Positioning pin; 19. Connecting groove; 20. Spring; 21. Fixing plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-4 , the utility model provides an embodiment: a heat sealing device for a degradable plastic bag, comprising a base 1, a support platform 2 is fixed on the top of the base 1, a heat sealing plate 3 is installed on the top of the support platform 2, a heating wire 11 is installed inside the heat sealing plate 3, a back plate 9 is fixed to the rear of the top of the base 1, a top plate 8 is fixed on the top of one end of the back plate 9, a hydraulic cylinder 6 is installed on the top of the top plate 8, a telescopic rod 7 is arranged at the bottom end of the hydraulic cylinder 6, a pressing plate 4 is installed at the bottom end of the telescopic rod 7, a silicone strip 10 is installed at the bottom end of the pressing plate 4, a connecting groove 19 is fixed to the rear end of the top of the support platform 2, a connecting plate 12 is arranged inside the connecting groove 19, a positioning pin 18 is installed on the outside of the connecting groove 19, one end of the positioning pin 18 extends to the inside of the connecting groove 19, the thickness of the connecting plate 12 is less than the inner diameter of the connecting groove 19, and the connecting plate 12 plays a role in aligning the bag opening;

[0026] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, loosen the positioning pin 18, thereby releasing the positioning of the connecting plate 12, and push the connecting plate 12 to a suitable position. By rotating the positioning pin 18, the positioning pin 18 will fix the connecting plate 12 inside the connecting groove 19. At this time, the connecting plate 12 will be located at the rear end of the heat sealing plate 3. When heat sealing, the plastic bag opening can be placed on the top of the heat sealing plate 3, and one end of the bag opening can be brought into contact with the connecting plate 12, so that the bag opening can be aligned through the connecting plate 12.

[0027] Embodiment 2: A slide groove 5 is provided on the inner side of the back plate 9, a slider 14 is provided inside the slide groove 5, a connecting rod 15 is fixed to one side of the slider 14, one side of the connecting rod 15 is fixedly connected to the rear end of the pressing plate 4, the outer diameter of the slider 14 is smaller than the inner diameter of the slide groove 5, and a sliding structure is formed between the slider 14 and the slide groove 5 to ensure the stability of the pressing plate 4 when it moves downward;

[0028] Specifically, Figure 1 and Figure 2 As shown, during heat sealing, by starting the hydraulic cylinder 6, when the hydraulic cylinder 6 drives the telescopic rod 7 to move downward, the telescopic rod 7 will drive the pressing plate 4 and the silicone layer 10 to move downward, and at this time the pressing plate 4 will drive the connecting rod 15 to make the slider 14 slide inside the slide groove 5, thereby ensuring the stability of the pressing plate 4 when moving downward, and preventing the silicone layer 10 from deviating when moving downward;

[0029] Embodiment 3: A reserved groove 17 is provided at the front end of the support platform 2, a fixing plate 21 is fixed at the bottom end of the reserved groove 17, and a spring 20 is fixed at the top of the fixing plate 21, a baffle 16 is fixed at the top of the spring 20, a connecting strip 13 is fixed at the top of the baffle 16, a plurality of springs 20 are provided, and the plurality of springs 20 are arranged at equal intervals at the bottom end of the baffle 16;

[0030] Specifically, Figure 2 and Figure 4 As shown, the mouth of the plastic bag can be placed on the top of the heat-sealing plate 3, and the bag body can be placed on the top of the baffle 16. During heat sealing, the silicone pressure strip 10 will press the bag mouth onto the heat-sealing plate 3. At this time, the pressing plate 4 will move the connecting strip 13 downward, and the connecting strip 13 will cause the baffle 16 to press the spring 20 downward. The baffle 16 plays a blocking role, thereby preventing hands from reaching into the heat-sealing plate 3, thereby improving safety during use.

[0031] Working principle: When the utility model is in use, the positioning pin 18 is loosened to release the positioning of the connecting plate 12, and the connecting plate 12 is pushed to a suitable position. By rotating the positioning pin 18, the positioning pin 18 will fix the connecting plate 12 inside the connecting groove 19. At this time, the connecting plate 12 will be located at the rear end of the heat sealing plate 3. When heat sealing, the plastic bag mouth can be placed on the top of the heat sealing plate 3, one end of the bag mouth can be contacted with the connecting plate 12, and the bag body can be placed on the top of the baffle 16. The hydraulic cylinder 6 is started. When the hydraulic cylinder 6 drives the telescopic rod 7 to move downward, the telescopic rod 7 will drive the pressing plate 4 and the silicone strip 10 to move downward, and the silicone strip 10 will press the bag mouth onto the heat sealing plate 3, completing the use of the heat sealing device.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A heat-sealing device for a degradable plastic bag, comprising a base (1), characterized in that: A support platform (2) is fixed to the top of the base (1), a heat sealing plate (3) is installed on the top of the support platform (2), a heating wire (11) is installed inside the heat sealing plate (3), a back plate (9) is fixed to the rear of the top of the base (1), a top plate (8) is fixed on the top of one end of the back plate (9), a hydraulic cylinder (6) is installed on the top of the top plate (8), a telescopic rod (7) is arranged at the bottom end of the hydraulic cylinder (6), a pressure plate (4) is installed at the bottom end of the telescopic rod (7), a silicone pressure strip (10) is installed at the bottom end of the pressure plate (4), a connecting groove (19) is fixed to the rear end of the top of the support platform (2), a connecting plate (12) is arranged inside the connecting groove (19), and a positioning pin (18) is installed on the outside of the connecting groove (19).

2. A heat sealing device for a degradable plastic bag according to claim 1, characterized in that: One end of the positioning pin (18) extends to the inside of the connecting groove (19), and the thickness of the connecting plate (12) is smaller than the inner diameter of the connecting groove (19).

3. A heat-sealing device for a degradable plastic bag according to claim 1, characterized in that: The inner side of the back plate (9) is provided with a slide groove (5), the interior of the slide groove (5) is provided with a slider (14), one side of the slider (14) is fixed with a connecting rod (15), and one side of the connecting rod (15) is fixedly connected to the rear end of the pressure plate (4).

4. A heat-sealing device for a degradable plastic bag according to claim 3, characterized in that: The outer diameter of the sliding block (14) is smaller than the inner diameter of the sliding groove (5), and a sliding structure is formed between the sliding block (14) and the sliding groove (5).

5. The heat sealing device for a degradable plastic bag according to claim 1, characterized in that: A reserved groove (17) is provided at the front end of the support platform (2), a fixing plate (21) is fixed at the bottom end of the reserved groove (17), a spring (20) is fixed at the top of the fixing plate (21), a baffle (16) is fixed at the top end of the spring (20), and a connecting strip (13) is fixed at the top end of the baffle (16).

6. A heat-sealing device for a degradable plastic bag according to claim 5, characterized in that: A plurality of the springs (20) are provided, and the plurality of the springs (20) are arranged at equal intervals at the bottom end of the baffle (16).

Images