Heat sealing device for food packaging bag production

Abstract

The utility model relates to the technical field of food packaging bag production, and discloses a heat sealing device for food packaging bag production, which comprises a workbench, the upper surface of the workbench is fixedly connected with a heat-resisting plate, the upper surface of the workbench is fixedly connected with a support, the left side of the support is fixedly connected with an electric push rod, and the right side of the support is fixedly connected with a motor. And the bottom of the electric push rod is fixedly connected with a box body. According to the heat-seal sealing device, the box body, the first through holes, the bolts and the nuts are matched, the combined electric heating pieces and the box body can be disassembled and assembled, the heating length of the heat-seal sealing device can be changed by changing the number of the combined electric heating pieces on the box body, and therefore when a user uses the heat-seal sealing device, the heating length of the heat-seal sealing device can be changed. The heating length of the heat sealing device can be adjusted according to the length of the packaging bag, so that when the heat sealing device is used, energy waste caused by the fact that the heating length is larger than the length of the packaging bag is avoided.

Description

Technical Field

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

[0002] Food packaging bags can be divided into ordinary food packaging bags, vacuum food packaging bags, inflatable food packaging bags, boiled food packaging bags, steamed food packaging bags and functional food packaging bags according to their application range. The production process of food packaging bags includes: planning → design → compounding → curing → slitting ← → bag making → printing → quality inspection → finished product. Among them, compounding requires a heat sealing device to seal the bag mouth.

[0003] At present, most heat sealing devices used in the production of food packaging bags press the packaging bag through the electric heating plate on the device, and heat-seal the bag opening through the heated electric heating plate. For example, Chinese patent publication No. CN216782853U discloses a heat sealing device for a food packaging bag production line. However, since the length of the electric heating plate of the device is fixed, when the heated length of the electric heating plate is greater than the length of the packaging bag, the heat of the electric heating plate cannot be fully utilized, resulting in energy waste. At the same time, when using the device for sealing, the mechanism for fixing the packaging bag on the device requires manual operation by the user, which makes the device more troublesome to use. Utility Model Content

[0004] The purpose of the present invention is to solve the shortcomings existing in the prior art, such as: at present, most of the heat sealing devices used in the production of food packaging bags press the packaging bag through the electric heating plate on the device, and heat-seal the bag opening through the heated electric heating plate. However, since the length of the electric heating plate of the device is fixed, when the heated length of the electric heating plate is greater than the length of the packaging bag, the heat of the electric heating plate cannot be fully utilized, resulting in energy waste. At the same time, when using the device for sealing, the mechanism for fixing the packaging bag on the device requires manual operation by the user, which makes the device more troublesome to use. A heat sealing device for the production of food packaging bags is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The top of the box body is fixed with a heat-resistant plate, the top surface of the box body is fixedly connected to the bracket, the left side of the bracket is fixedly connected to the electric push rod, the bottom of the electric push rod is fixedly connected to the box body, the left and right sides of the inner wall of the box body are fixedly connected to the U-shaped column, the inner wall of the U-shaped column and the inner wall of the box body are fitted with a combined electric heating plate, the left and right sides of the box body are opened with a first through hole, the inner wall of the first through hole and the inner wall of the combined electric heating plate are fitted with a bolt, the surface of the bolt is threadedly connected with a nut, the left side of the nut is fixedly connected to the right side of the box body, the top of the inner wall of the box body is bonded with an insulating strip, the bottom of the insulating strip is bonded with a conductive strip, the bottom of the conductive strip contacts the upper surface of the combined electric heating plate, the inner wall of the box body is fixedly connected with a circuit board, and the upper surface of the workbench is fixedly connected with a control panel.

[0007] Preferably, the electric push rod and the circuit board are both electrically connected to the control panel, and the circuit board is electrically connected to the conductive strip.

[0008] Preferably, the combined electric heating plate includes a heat conducting plate, the upper surface of the heat conducting plate is fixedly connected to a heat insulating ring, the upper surface of the heat insulating ring contacts the bottom of the box body, the upper surface of the heat conducting plate is fixedly connected to an electric heating tube, the upper surface of the heat insulating ring is fixedly connected to a U-shaped plate, the inner wall of the U-shaped plate is fixedly connected to a hollow block, the inner wall of the hollow block contacts the surface of the bolt, the inner wall of the U-shaped column and the inner wall of the box body are in contact with the surface of the U-shaped plate, a second through hole is opened on the upper surface of the U-shaped plate, an insulating sleeve is bonded to the inner wall of the second through hole, a conductive column is bonded to the inner wall of the insulating sleeve, the upper surface of the conductive column contacts the bottom of the conductive strip, and the conductive column is electrically connected to the electric heating tube.

[0009] Preferably, a stepped groove is provided on the upper surface of the heat-resistant plate, a fixing mechanism is provided on the inner wall of the stepped groove, and the bottom of the fixing mechanism is fixedly connected to the upper surface of the heat-resistant plate.

[0010] Preferably, the fixing mechanism includes a horizontal plate, the surface of the horizontal plate contacts the inner wall of the stepped groove, an air inlet hole is opened inside the horizontal plate, an air outlet hole is opened inside the horizontal plate, the inner wall of the air outlet hole is fixedly connected to a hose, one end of the hose is fixedly connected to an air pump, the bottom of the air pump is fixedly connected to the upper surface of the heat-resistant plate, and the air pump is electrically connected to the control panel.

[0011] Preferably, the upper surface of the transverse plate and the upper surface of the heat-resistant plate are in the same horizontal plane.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model enables the combined electric heating plate and the box body to be assembled and disassembled through the cooperation of the box body, the first through hole, the bolt and the nut. The heating length of the heat sealing device can be changed by changing the number of the combined electric heating plates on the box body. Therefore, when using the heat sealing device, the user can adjust the heating length of the heat sealing device according to the length of the packaging bag. Therefore, when using the heat sealing device, energy will not be wasted due to the heating length being greater than the length of the packaging bag.

[0014] The utility model is provided with a stepped groove and a fixing mechanism, wherein, when the air pump in the fixing mechanism is turned on, suction is generated at the air inlet through the air pump, and the packaging bag can be automatically fixed on the horizontal plate through the suction. At the same time, when the air pump is turned off, the packaging bag can be directly separated from the horizontal plate, and then the packaging bag placed on the heat-resistant plate can be automatically fixed through the fixing mechanism, thereby making the heat sealing device more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model.

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0017] Figure 3 for Figure 1 Cross-sectional view at the middle BB.

[0018] Figure 4 for Figure 3 Enlarged view of point C in the middle.

[0019] Figure 5 It is a top view of the heat-resistant plate in the present invention.

[0020] Figure 6 for Figure 5 Cross-sectional view at DD in the middle.

[0021] Figure 7 It is a left view of the box body in the utility model.

[0022] Figure 8 It is a left view of the combined electric heating plate in the utility model.

[0023] Figure 9 for Figure 8 Cross-sectional view at EE.

[0024] Figure 10 It is a top view of the fixing mechanism in the present utility model.

[0025] In the figure: 1. workbench; 2. heat-resistant plate; 3. bracket; 4. electric push rod; 5. box body; 6. U-shaped column; 7. combined electric heating plate; 71. heat-conducting plate; 72. heat-insulating ring; 73. electric heating tube; 74. U-shaped plate; 75. hollow block; 76. second through hole; 77. insulating sleeve; 78. conductive column; 8. first through hole; 9. bolt; 10. nut; 11. insulating strip; 12. conductive strip; 13. circuit board; 14. control panel; 15. stepped groove; 16. fixing mechanism; 161. horizontal plate; 162. air inlet; 163. air outlet; 164. hose; 165. air pump. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0028] Example 1

[0029] Reference Figure 1-9A heat sealing device for producing food packaging bags includes a workbench 1, a heat-resistant plate 2 is fixedly connected to the upper surface of the workbench 1, a bracket 3 is fixedly connected to the upper surface of the workbench 1, an electric push rod 4 is fixedly connected to the left side of the bracket 3, and a box body 5 is fixedly connected to the bottom of the electric push rod 4. The box body 5 is controlled to move up and down by the electric push rod 4. The left and right sides of the inner wall of the box body 5 are fixedly connected with U-shaped columns 6, and the inner wall of the U-shaped column 6 and the inner wall of the box body 5 are both fitted with a combined electric heating plate 7. A first through hole 8 is opened on the left and right sides of the box body 5, and a bolt 9 is fitted on the inner wall of the first through hole 8 and the inner wall of the combined electric heating plate 7. A nut 10 is threadedly connected to the surface of the bolt 9, and the left side of the nut 10 is connected to the right side of the box body 5. Fixed connection, when the bolt 9 is screwed into the nut 10, the nut 10 makes it impossible to separate the bolt 9 from the first through hole 8, the top of the inner wall of the box body 5 is bonded with an insulating strip 11, and the bottom of the insulating strip 11 is bonded with a conductive strip 12, which is separated from the box body 5 by the insulating strip 11, and the bottom of the conductive strip 12 is in contact with the upper surface of the combined electric heating plate 7, the inner wall of the box body 5 is fixedly connected with a circuit board 13, the upper surface of the workbench 1 is fixedly connected with a control panel 14, the electric push rod 4 and the circuit board 13 are both electrically connected to the control panel 14, the circuit board 13 is electrically connected to the conductive strip 12, the extension and retraction of the electric push rod 4 is controlled by the control panel 14, and the switch of the combined electric heating plate 7 is controlled by the control panel 14 and the circuit board 13.

[0030] The combined electric heating plate 7 includes a heat conducting plate 71, an upper surface of the heat conducting plate 71 is fixedly connected to a heat insulating ring 72, the upper surface of the heat insulating ring 72 is in contact with the bottom of the box body 5, and the heat conducting plate 71 is separated from the box body 5 by the heat insulating ring 72. The upper surface of the heat conducting plate 71 is fixedly connected to an electric heating tube 73, and the heat conducting plate 71 is heated by the electric heating tube 73. The upper surface of the heat insulating ring 72 is fixedly connected to a U-shaped plate 74, and the inner wall of the U-shaped plate 74 is fixedly connected to a hollow block 75. The inner wall of the hollow block 75 is in contact with the surface of the bolt 9. When the bolt 9 is screwed into the nut 10, the bolt 9 is fixed in the first through hole 8 by the nut 10, and the bolt 9 is fixed in the first through hole 8 by the nut 10. The hollow block 75 is fixed in the box body 5 by bolts 9, and the inner wall of the U-shaped column 6 and the inner wall of the box body 5 are in contact with the surface of the U-shaped plate 74. A second through hole 76 is provided on the upper surface of the U-shaped plate 74. An insulating sleeve 77 is bonded to the inner wall of the second through hole 76, and a conductive column 78 is bonded to the inner wall of the insulating sleeve 77. The upper surface of the conductive column 78 is in contact with the bottom of the conductive bar 12. The conductive column 78 is electrically connected to the electric heating tube 73 and is separated from the U-shaped plate 74 by the insulating sleeve 77. When the conductive column 78 is in contact with the conductive bar 12, the electric heating tube 73 is electrically connected to the circuit board 13 through the cooperation of the conductive column 78 and the conductive bar 12.

[0031] Example 2

[0032] Reference Figure 1-10A stepped groove 15 is provided on the upper surface of the heat-resistant plate 2 , and a fixing mechanism 16 is fitted on the inner wall of the stepped groove 15 . The bottom of the fixing mechanism 16 is fixedly connected to the upper surface of the heat-resistant plate 2 .

[0033] The fixing mechanism 16 includes a horizontal plate 161, the surface of the horizontal plate 161 contacts the inner wall of the stepped groove 15, the upper surface of the horizontal plate 161 and the upper surface of the heat-resistant plate 2 are in the same horizontal plane, the interior of the horizontal plate 161 is provided with an air inlet 162, the interior of the horizontal plate 161 is provided with an air outlet 163, the inner wall of the air outlet 163 is fixedly connected to a hose 164, one end of the hose 164 is fixedly connected to an air pump 165, the bottom of the air pump 165 is fixedly connected to the upper surface of the heat-resistant plate 2, and the air pump 165 is connected to the control surface. The plate 14 is electrically connected. When the air pump 165 is turned on, the air in the stepped groove 15 is extracted through the air pump 165, and the air inlet hole 162 generates suction. At this time, the packaging bag can be automatically fixed on the horizontal plate 161 through suction, and the packaging bag will not move during heat sealing. When the air pump 165 is turned off, the packaging bag can be directly separated from the horizontal plate 161, and then the fixing mechanism 16 can automatically fix the packaging bag placed on the heat-resistant plate 2, thereby making the heat sealing device more convenient to use.

[0034] In the present invention, when the user uses the device, he first adjusts the number of combined electric heating sheets 7 on the box body 5 according to the length of the packaging bag. When the number of combined electric heating sheets 7 needs to be reduced, the bolt 9 is separated from the nut 10 by rotating the bolt 9. Then, the combined electric heating sheet 7 can be removed from the box body 5 by pulling the bolt 9 out of the hollow block 75. When the number of combined electric heating sheets 7 needs to be increased, the U-shaped plate 74 on the combined electric heating sheet 7 is first inserted into the U-shaped column 6, and the hollow block 75 is aligned with the first through hole 8. Then, the bolt 9 is inserted into the first through hole 8 and the hollow block 75, and the bolt 9 is screwed into the nut 10. At this time, the hollow block 75 is fixed in the box body 5 by the cooperation of the nut 10 and the bolt 9, and the The combined electric heating plate 7 is fixed on the box body 5. When the number of combined electric heating plates 7 is adjusted, the packaging bag is first placed on the heat-resistant plate 2. Then, the air pump 165 is turned on. The air pump 165 generates suction at the air inlet 162, and the packaging bag can be automatically fixed on the horizontal plate 161 by suction. At this time, the packaging bag will not move during heat sealing. Then, the box body 5 is moved upward by the electric push rod 4, and the heat conduction plate 71 is heated by the electric heating tube 73. When the heated heat conduction plate 71 presses the packaging bag, the heated heat conduction plate 71 is used to heat-seal the bag opening. After sealing is completed, the box body 5 is returned to its initial position by the electric push rod 4, and the packaging bag can be directly taken away from the heat-resistant plate 2 by turning off the air pump 165.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A heat sealing device for producing food packaging bags, comprising a workbench (1), characterized in that: The upper surface of the workbench (1) is fixedly connected to a heat-resistant plate (2), the upper surface of the workbench (1) is fixedly connected to a bracket (3), the left side of the bracket (3) is fixedly connected to an electric push rod (4), the bottom of the electric push rod (4) is fixedly connected to a box body (5), the left and right sides of the inner wall of the box body (5) are fixedly connected to U-shaped columns (6), the inner wall of the U-shaped column (6) and the inner wall of the box body (5) are both fitted with a combined electric heating plate (7), the left and right sides of the box body (5) are provided with a first through hole (8), the inner wall of the first through hole (8) and the combined electric heating plate (7) are fixedly connected to each other. The inner wall of the combined electric heating plate (7) is fitted with bolts (9), the surface of the bolts (9) is threadedly connected with a nut (10), the left side of the nut (10) is fixedly connected to the right side of the box body (5), the top of the inner wall of the box body (5) is bonded with an insulating strip (11), the bottom of the insulating strip (11) is bonded with a conductive strip (12), the bottom of the conductive strip (12) is in contact with the upper surface of the combined electric heating plate (7), the inner wall of the box body (5) is fixedly connected with a circuit board (13), and the upper surface of the workbench (1) is fixedly connected with a control panel (14).

2. A heat sealing device for producing food packaging bags according to claim 1, characterized in that: The electric push rod (4) and the circuit board (13) are both electrically connected to the control panel (14), and the circuit board (13) is electrically connected to the conductive strip (12).

3. A heat sealing device for producing food packaging bags according to claim 1, characterized in that: The combined electric heating plate (7) includes a heat conducting plate (71), the upper surface of the heat conducting plate (71) is fixedly connected to a heat insulating ring (72), the upper surface of the heat insulating ring (72) contacts the bottom of the box body (5), the upper surface of the heat conducting plate (71) is fixedly connected to an electric heating tube (73), the upper surface of the heat insulating ring (72) is fixedly connected to a U-shaped plate (74), the inner wall of the U-shaped plate (74) is fixedly connected to a hollow block (75), the inner wall of the hollow block (75) is in contact with the screw The surface of the bolt (9) is in contact with the inner wall of the U-shaped column (6) and the inner wall of the box body (5) are in contact with the surface of the U-shaped plate (74), the upper surface of the U-shaped plate (74) is provided with a second through hole (76), the inner wall of the second through hole (76) is bonded with an insulating sleeve (77), the inner wall of the insulating sleeve (77) is bonded with a conductive column (78), the upper surface of the conductive column (78) is in contact with the bottom of the conductive strip (12), and the conductive column (78) is electrically connected to the electric heating tube (73).

4. A heat sealing device for producing food packaging bags according to claim 1, characterized in that: The upper surface of the heat-resistant plate (2) is provided with a stepped groove (15), the inner wall of the stepped groove (15) is fitted with a fixing mechanism (16), and the bottom of the fixing mechanism (16) is fixedly connected to the upper surface of the heat-resistant plate (2).

5. A heat sealing device for producing food packaging bags according to claim 4, characterized in that: The fixing mechanism (16) includes a transverse plate (161), the surface of the transverse plate (161) contacts the inner wall of the stepped groove (15), an air inlet hole (162) is provided inside the transverse plate (161), an air outlet hole (163) is provided inside the transverse plate (161), the inner wall of the air outlet hole (163) is fixedly connected to a hose (164), one end of the hose (164) is fixedly connected to an air pump (165), the bottom of the air pump (165) is fixedly connected to the upper surface of the heat-resistant plate (2), and the air pump (165) is electrically connected to the control panel (14).

6. A heat sealing device for producing food packaging bags according to claim 5, characterized in that: The upper surface of the transverse plate (161) and the upper surface of the heat-resistant plate (2) are in the same horizontal plane.

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