Horizontal sealing device with pre-sealing function

Abstract

The utility model belongs to the technical field of heat sealing mechanisms of four-edge sealing packaging machines, and provides a transverse sealing device with a pre-sealing function, which comprises a wall plate, a final sealing assembly and a pre-sealing assembly. The final sealing assembly comprises a final sealing mold installed on the wall plate, and the final sealing mold forms a net grain face used for heat sealing of the packaging bag. The pre-sealing assembly comprises a pre-sealing die which is installed on the wall plate and arranged with the final sealing die in a spaced mode, the pre-sealing die is arranged on a conveying path before the packaging bag enters the final sealing assembly and forms a protruding strip used for heat sealing of the packaging bag, and the protruding strip is the same as the edge of at least one side of the net grain face in shape.

Description

Technical Field

[0001] The present application belongs to the technical field of heat sealing mechanisms of four-side sealing packaging machines, and more specifically, to a transverse sealing device with pre-seal. Background Art

[0002] In the production process of packaging bags, the heat sealing mechanism is the key link to ensure the sealing of packaging bags, and its effect directly determines the quality and performance of packaging bags. However, due to structural design defects, the traditional transverse sealing device easily leads to gaps or bubbles at the sealing point of the packaging bag heat seal, which seriously affects the sealing effect of the packaging bag and becomes a bottleneck restricting the development of the packaging industry. Therefore, it is necessary to solve the above technical problems. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a transverse sealing device with pre-seal to solve the technical problem of poor heat sealing effect of the transverse sealing device in the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a transverse sealing device with pre-seal, comprising:

[0005] Wall panels;

[0006] A final sealing component, comprising a final sealing mold, wherein the final sealing mold forms a reticulated surface for heat-sealing the packaging bag;

[0007] The pre-sealing component comprises a pre-sealing mold spaced apart from the final sealing mold, the pre-sealing mold is arranged on the conveying path before the packaging bag enters the final sealing component and forms a convex strip for heat-sealing the packaging bag, and the convex strip has the same shape as at least one side edge of the textured surface.

[0008] Optionally, the pre-sealing assembly further comprises a support mounted on the wall panel and an inner beam and an outer beam respectively slidably mounted on the support, the pre-sealing mold is mounted on the inner beam, and the outer beam is connected to a pressure plate directly facing the pre-sealing mold;

[0009] The sliding directions of the inner cross beam and the outer cross beam relative to the support are parallel to each other, and the pre-sealing mold and the pressure plate are used to move closer to or farther away from each other during the sliding process of the inner cross beam and the outer cross beam relative to the support.

[0010] Optionally, the pre-sealing assembly further comprises a heating plate connected to the pre-sealing mold and used for heating the pre-sealing mold, and a heat insulation plate connected between the heating plate and the inner cross beam and used for heat insulation.

[0011] Optionally, the pressure plate is a silica gel body that can be heated.

[0012] Optionally, the pre-sealing assembly further comprises a driving mechanism for driving the inner crossbeam and the outer crossbeam;

[0013] The driving mechanism comprises a servo motor, a driving shaft, a double-crankshaft, and an inner link rod and an outer link rod respectively connected to the double-crankshaft in rotation, the outer crossbeam is connected to the double-crankshaft through the outer link rod, and the inner crossbeam is connected to the double-crankshaft through the inner link rod;

[0014] The ends of the inner link and the outer link for rotationally connecting to the double-throw crankshaft have a phase difference of 180° with respect to the rotation center axis of the double-throw crankshaft.

[0015] Optionally, the driving mechanism further comprises an inner pull rod and an outer pull rod respectively crossing the support;

[0016] The inner link rod is connected to the inner cross beam through the inner tie rod, and the outer link rod is connected to the outer cross beam through the outer tie rod.

[0017] Optionally, the driving mechanism further comprises a guide column slidably mounted on the support;

[0018] The guide column is parallel to the sliding direction of the inner cross beam and the outer cross beam relative to the support, and the inner cross beam and the outer cross beam are respectively slidably connected to the support through the guide column.

[0019] Optionally, the pre-sealing assembly and the driving mechanism are respectively located on opposite sides of the wall panel, and the support passes through the wall panel.

[0020] Optionally, the driving mechanism further comprises a mounting plate connected to the wall panel, and the support and the servo motor are both mounted on the mounting plate.

[0021] Optionally, the driving mechanism further comprises a support plate connected to the mounting plate and used for supporting the driving shaft.

[0022] The beneficial effect of the transverse sealing device with pre-seal provided in the present application is that: compared with the prior art, the transverse sealing device with pre-seal in the present application is provided with a final sealing component and a pre-seal component, wherein the pre-seal component can heat-seal the target packaging bag before the final sealing component, and since the convex strip used for heat-sealing the packaging bag in the pre-seal component has the same side contour shape as the reticulated surface used for heat-sealing the packaging bag in the final sealing component, the pre-seal strip formed by the heat-sealing of the pre-seal component can be used as the heat-sealing starting position for heat-sealing when the final sealing component performs the final heat-sealing on the packaging bag. This can improve the heat-sealing efficiency of the final sealing component on the one hand, and on the other hand, since the convex strip is a narrow and long structure, the heat-sealing pressure can be well controlled and the defects of gaps or bubbles at the sealing of the packaging bag can be effectively avoided, so that the heat-sealing effect of the transverse sealing device with pre-seal in the present application can be significantly improved, which is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 The overall structure of the transverse sealing device with pre-sealing provided in the embodiment of the present application is schematically shown. Figure 1 ;

[0025] Figure 2 The overall structure of the transverse sealing device with pre-sealing provided in the embodiment of the present application is schematically shown. Figure 2 ;

[0026] Figure 3 The overall structure of the transverse sealing device with pre-sealing provided in the embodiment of the present application is schematically shown. Figure 3 ;

[0027] Figure 4 A schematic diagram of the overall structure of the pre-sealing mold provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the overall structure of the final sealing mold provided in an embodiment of the present application;

[0029] Figure 6 A schematic diagram of the heat-sealing effect formed on a packaging bag by the pre-sealing mold provided in an embodiment of the present application;

[0030] Figure 7 Schematic diagram of the heat-sealing effect formed on the packaging bag by the final sealing mold provided in an embodiment of the present application.

[0031] Among them, the reference numerals in the figure are: 100, wall panel; 200, final sealing component; 201, final sealing mold; 202, mesh surface; 203, mesh transverse sealing area; 300, pre-sealing component; 301, pre-sealing mold; 302, convex strip; 303, pre-sealing belt; 304, support; 305, inner crossbeam; 306, outer crossbeam; 307, pressure plate; 308, heating plate; 309, insulation board; 401, servo motor; 402, driving shaft; 403, double crankshaft; 404, inner connecting rod; 405, outer connecting rod; 406, inner pull rod; 407, outer pull rod; 408, guide column; 409, mounting plate; 410, support plate. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] Please also read Figures 1 to 7 Now, a pre-sealed transverse sealing device provided in an embodiment of the present application is described. The pre-sealed transverse sealing device comprises a wall panel 100, a final sealing component 200 and a pre-sealing component 300. Among them:

[0037] The final sealing component 200 includes a final sealing mold 201, which forms a reticulated surface 202 for heat-sealing the packaging bag. In this embodiment, the final sealing mold 201 heat-seals the target packaging bag through the reticulated surface 202 to form a reticulated transverse sealing area 203. The pre-sealing component 300 includes a pre-sealing mold 301 spaced apart from the final sealing mold 201. The pre-sealing mold 301 is arranged on the conveying path before the packaging bag enters the final sealing component 200 and forms a convex strip 302 for heat-sealing the packaging bag. The convex strip 302 has the same shape as at least one side edge of the reticulated surface 202. In this embodiment, the pre-sealing mold 301 is used to heat-seal the target packaging bag to form a pre-sealing belt 303.

[0038] According to the above structure provided in the present embodiment, in the transverse sealing device with pre-sealing in the present embodiment, the pre-sealing component 300 can heat-seal the target packaging bag before the final sealing component 200. Since the convex strip 302 used for heat-sealing the packaging bag in the pre-sealing component 300 and the side contour shape of the reticulated surface 202 used for heat-sealing the packaging bag in the final sealing component 200 are the same, when the final sealing component 200 performs the final heat sealing on the packaging bag, the pre-sealing strip 303 formed by the heat sealing of the pre-sealing component 300 can be used as the heat sealing starting position for heat sealing. In this way, the heat sealing efficiency of the final sealing component 200 can be improved. On the other hand, since the convex strip 302 is a long and narrow structure, the heat-sealing pressure can be well controlled and the defects of gaps or bubbles at the sealing of the packaging bag can be effectively avoided. In this way, the heat-sealing effect of the transverse sealing device with pre-seal in this embodiment can be significantly improved, which is far superior to the prior art. Here, it can be understood that except for the heat-sealing working surface of the final sealing mold 201 of the final sealing component 200 being the textured surface 202, the structures and connection methods of other components are the same as those of the pre-sealing component 300, so as to realize the commonality of various components, thereby saving production costs, facilitating installation, and improving the interchangeability of various components.

[0039] In another embodiment of the present application, please refer to Figures 1 to 7 The pre-sealing assembly 300 also includes a support 304 mounted on the wall panel 100 and an inner crossbeam 305 and an outer crossbeam 306 respectively slidably mounted on the support 304. The pre-sealing mold 301 is mounted on the inner crossbeam 305. The outer crossbeam 306 is connected with a pressure plate 307 facing the pre-sealing mold 301. The inner crossbeam 305 and the outer crossbeam 306 are parallel to each other in the sliding direction relative to the support 304. The pre-sealing mold 301 and the pressure plate 307 are used to move closer to or farther away from each other during the sliding of the inner crossbeam 305 and the outer crossbeam 306 relative to the support 304, so that the pressure plate 307 can cooperate with the pre-sealing mold 301 to complete the pre-sealing process. According to the above structure provided in this embodiment, the inner crossbeam 305 and the outer crossbeam 306 that can slide relative to the support 304 can drive the pressure plate 307 and the pre-sealing mold 301 to move closer to or farther away from each other stably and quickly, which is conducive to further improving the heat sealing effect of the horizontal sealing device with pre-sealing in this embodiment.

[0040] In another embodiment of the present application, please refer to Figures 1 to 7 The pre-sealing assembly 300 further includes a heating plate 308 connected to the pre-sealing mold 301 and used to heat the pre-sealing mold 301, and a heat insulation plate 309 connected between the heating plate 308 and the inner cross beam 305 and used for heat insulation. According to the above structure provided in this embodiment, the heat insulation plate 309 disposed between the heating plate 308 and the inner cross beam 305 can well prevent the heat of the heating plate 308 from being transferred to the inner cross beam 305, which is conducive to further improving the heat sealing effect of the transverse sealing device with pre-sealing in this embodiment.

[0041] In another embodiment of the present application, please refer to Figures 1 to 7 The pressure plate 307 is a silica gel that can be heated. According to the above structure provided in this embodiment, the pressure plate 307 can not only cooperate with the heating plate 308 to heat up, but also prevent the packaging bag from breaking during the heat sealing process, which is conducive to further improving the heat sealing effect of the transverse sealing device with pre-sealing in this embodiment.

[0042] In another embodiment of the present application, please refer to Figures 1 to 7 The pre-sealing assembly 300 further includes a driving mechanism for driving the inner crossbeam 305 and the outer crossbeam 306. The driving mechanism includes a servo motor 401, a driving shaft 402, a double-cranked crankshaft 403, and an inner link rod 404 and an outer link rod 405 respectively connected to the double-cranked crankshaft 403 in a transmission manner, the outer crossbeam 306 is connected to the double-cranked crankshaft 403 through the outer link rod 405, the inner crossbeam 305 is connected to the double-cranked crankshaft 403 through the inner link rod 404, and the ends of the inner link rod 404 and the outer link rod 405 for connecting to the double-cranked crankshaft 403 in a rotational manner have a phase difference of 180° with respect to the rotation center axis of the double-cranked crankshaft 403. According to the above structure provided in this embodiment, the servo motor 401 can drive the double-bend crankshaft 403 connected to the driving shaft 402 to rotate through the driving shaft 402. When the double-bend crankshaft 403 drives the inner cross beam 305 to move through the inner connecting rod 404, the outer connecting rod 405 can drive the outer cross beam 306 to move in the opposite direction of the moving direction of the inner cross beam 305. In this way, the inner cross beam 305 and the outer cross beam 306 can approach or move away from each other during the continuous rotation of the double-bend crankshaft 403 and complete the pre-sealing process, which is beneficial to further improve the heat sealing effect of the pre-sealed horizontal sealing device in this embodiment.

[0043] In another embodiment of the present application, please refer to Figures 1 to 7The driving mechanism further includes an inner tie rod 406 and an outer tie rod 407 respectively passing through the support 304, the inner tie rod 404 is connected to the inner cross beam 305 through the inner tie rod 406, and the outer tie rod 405 is connected to the outer cross beam 306 through the outer tie rod 407. According to the above structure provided in this embodiment, the inner tie rod 406 and the outer tie rod 407 passing through the support 304 can improve the movement stability of the inner cross beam 305 and the outer cross beam 306, which is conducive to further improving the heat sealing effect of the pre-sealed transverse sealing device in this embodiment.

[0044] In another embodiment of the present application, please refer to Figures 1 to 7 The driving mechanism further includes a guide post 408 slidably mounted on the support 304, the guide post 408 is parallel to the sliding direction of the inner crossbeam 305 and the outer crossbeam 306 relative to the support 304, and the inner crossbeam 305 and the outer crossbeam 306 are slidably connected to the support 304 through the guide post 408. According to the above structure provided in this embodiment, the guide post 408 slidably connected to the support 304 can further improve the movement stability of the inner crossbeam 305 and the outer crossbeam 306, which is conducive to further improving the heat sealing effect of the transverse sealing device with pre-sealing in this embodiment.

[0045] In another embodiment of the present application, please refer to Figures 1 to 7 The pre-sealing component 300 and the driving mechanism are respectively located on opposite sides of the wallboard 100, and the support 304 passes through the wallboard 100. According to the above structure provided in this embodiment, the pre-sealing component 300 and the driving mechanism are arranged on both sides of the wallboard 100 to prevent various dust and oil stains generated by the driving mechanism during operation from affecting the pre-sealing component 300, which is conducive to further improving the heat sealing effect of the transverse sealing device with pre-sealing in this embodiment.

[0046] In another embodiment of the present application, please refer to Figures 1 to 7 The driving mechanism further includes a mounting plate 409 connected to the wallboard 100, and the support 304 and the servo motor 401 are both mounted on the mounting plate 409. According to the above structure provided in this embodiment, the mounting plate 409 connected to the wallboard 100 can provide a stable mounting effect for the support 304 and the servo motor 401, which is conducive to further improving the heat sealing effect of the pre-sealed transverse sealing device in this embodiment.

[0047] In another embodiment of the present application, please refer to Figures 1 to 7 The driving mechanism further includes a support plate 410 connected to the mounting plate 409 and used to support the driving shaft 402. According to the above structure provided in this embodiment, the support plate 410 connected to the mounting plate 409 can provide stable support for the driving shaft 402, which is conducive to further improving the heat sealing effect of the transverse sealing device with pre-sealing in this embodiment.

[0048] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A transverse sealing device with pre-sealing, characterized in that: include: Wall Panel (100); A final sealing component (200) comprises a final sealing mold (201), wherein the final sealing mold (201) forms a reticulated surface (202) for heat-sealing a packaging bag; The pre-sealing component (300) comprises a pre-sealing mold (301) arranged at a distance from the final sealing mold (201); the pre-sealing mold (301) is arranged on a conveying path before the packaging bag enters the final sealing component (200) and forms a convex strip (302) for heat-sealing the packaging bag; the convex strip (302) has the same shape as at least one side edge of the textured surface (202).

2. The transverse sealing device with pre-seal as claimed in claim 1, characterized in that: The pre-sealing assembly (300) further comprises a support (304) mounted on the wallboard (100), and an inner crossbeam (305) and an outer crossbeam (306) respectively slidably mounted on the support (304); the pre-sealing mold (301) is mounted on the inner crossbeam (305), and the outer crossbeam (306) is connected to a pressure plate (307) directly facing the pre-sealing mold (301); The sliding directions of the inner crossbeam (305) and the outer crossbeam (306) relative to the support (304) are parallel to each other, and the pre-sealing mold (301) and the pressure plate (307) are used to move the inner crossbeam (305) and the outer crossbeam (306) closer to or farther away from each other during the sliding process of the inner crossbeam (305) and the outer crossbeam (306) relative to the support (304).

3. The transverse sealing device with pre-seal as claimed in claim 2, characterized in that: The pre-sealing assembly (300) further comprises a heating plate (308) connected to the pre-sealing mould (301) and used for heating the pre-sealing mould (301), and a heat insulation plate (309) connected between the heating plate (308) and the inner crossbeam (305) and used for heat insulation.

4. The transverse sealing device with pre-seal as claimed in claim 3, characterized in that: The pressure-bearing plate (307) is a silica gel body that can be heated.

5. The transverse sealing device with pre-seal as claimed in claim 2, characterized in that: The pre-sealing assembly (300) further comprises a driving mechanism for driving the inner crossbeam (305) and the outer crossbeam (306); The driving mechanism comprises a servo motor (401), a driving shaft (402), a double-crank crankshaft (403) which are sequentially connected in transmission, and an inner link rod (404) and an outer link rod (405) which are respectively rotatably connected to the double-crank crankshaft (403); the outer crossbeam (306) is connected to the double-crank crankshaft (403) via the outer link rod (405); and the inner crossbeam (305) is connected to the double-crank crankshaft (403) via the inner link rod (404); The ends of the inner link rod (404) and the outer link rod (405) respectively used for rotational connection with the double-crankshaft (403) have a phase difference of 180° relative to the rotation center axis of the double-crankshaft (403).

6. The transverse sealing device with pre-seal as claimed in claim 5, characterized in that: The driving mechanism further comprises an inner pull rod (406) and an outer pull rod (407) respectively passing through the support (304); The inner connecting rod (404) is connected to the inner crossbeam (305) via the inner pull rod (406), and the outer connecting rod (405) is connected to the outer crossbeam (306) via the outer pull rod (407).

7. The transverse sealing device with pre-seal as claimed in claim 6, characterized in that: The driving mechanism further comprises a guide column (408) slidably mounted on the support (304); The guide column (408) is parallel to the sliding direction of the inner crossbeam (305) and the outer crossbeam (306) relative to the support (304), and the inner crossbeam (305) and the outer crossbeam (306) are respectively slidably connected to the support (304) via the guide column (408).

8. The transverse sealing device with pre-seal as claimed in claim 5, characterized in that: The pre-sealed assembly (300) and the driving mechanism are respectively located on opposite sides of the wall panel (100), and the support (304) passes through the wall panel (100).

9. The transverse sealing device with pre-seal as claimed in claim 8, characterized in that: The driving mechanism further comprises a mounting plate (409) connected to the wall panel (100), and the support (304) and the servo motor (401) are both mounted on the mounting plate (409).

10. The transverse sealing device with pre-seal as claimed in claim 9, characterized in that: The driving mechanism further comprises a support plate (410) connected to the mounting plate (409) and used for supporting the driving shaft (402).

Images