Heat sealing device

Abstract

The utility model relates to a sealing device, in particular to a heat sealing device. Comprising a first heat sealing structure, a second heat sealing structure and a transmission structure; the first heat sealing structure comprises a connecting assembly, a first driving assembly, a second driving assembly and a first transmission rod, the two ends of the connecting assembly are fixedly connected with the first driving assembly and the second driving assembly correspondingly, the second driving assembly and the first driving assembly are the same in structure, and the second driving assembly and the first driving assembly are arranged in a mirror image mode; the first driving assembly and the second driving assembly jointly drive the connecting assembly to move, and the first driving assembly and the second driving assembly are in transmission connection through a first transmission rod; the transmission structure is in transmission connection with the first heat sealing structure and the second heat sealing structure. The technical problems that when an existing heat sealing device is used for sealing, due to uneven stress of a sealing structure, the two ends are not completely sealed, and the sealing effect is not ideal are solved.

Description

Technical Field

[0001] The utility model relates to a sealing device, in particular to a heat sealing device. Background Art

[0002] The sealing device is a device that seals the packaging bag filled with packaging materials. During the heat sealing process, the two heat sealing structures need to be brought close to each other to complete the sealing. Therefore, a driving component is required to bring the two heat sealing structures close to each other. Most existing heat sealing devices have a driving component in the middle of the sealing structure, which makes the force at the two ends of the heat sealing device smaller than that in the middle, which may lead to incomplete sealing at both ends. Utility Model Content

[0003] The main purpose of the utility model is to provide a heat sealing device, which solves the technical problem that the existing heat sealing devices, when sealing, cause incomplete sealing at both ends and unsatisfactory sealing effect due to uneven force on the sealing structure.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a heat sealing device, including a first heat sealing structure, a second heat sealing structure and a transmission structure;

[0005] The first heat-sealing structure includes a connecting assembly, a first driving assembly, a second driving assembly and a first transmission rod, the two ends of the connecting assembly are respectively connected to the first driving assembly and the second driving assembly, the second driving assembly and the first driving assembly have the same structure, the second driving assembly and the first driving assembly are mirror-imaged, the first driving assembly and the second driving assembly jointly drive the connecting assembly to move, and the first driving assembly and the second driving assembly are connected by the first transmission rod;

[0006] The second heat-sealing structure is identical to the first heat-sealing structure, and the two are arranged in a mirror image;

[0007] The transmission structure is transmission-connected to the first heat-sealing structure and the second heat-sealing structure respectively.

[0008] Preferably, connecting plates are fixedly connected to both ends of the connecting assembly, the connecting plates extend vertically, and the two connecting plates are respectively connected to the first driving assembly and the second driving assembly.

[0009] Preferably, the first driving assembly includes a first gear, a second gear, a third gear, a fourth gear, a first eccentric wheel and a second eccentric wheel;

[0010] The first gear is arranged outside the fixed frame. The first gear is coaxially and fixedly connected to the first transmission rod. The first gear meshes with the second gear. The second gear is rotatably connected to the fixed frame through a rotating shaft. The second gear meshes with the third gear and the fourth gear at the same time. The third gear and the fourth gear are the same. Both the third gear and the fourth gear are drivingly connected to the fixed frame through rotating shafts;

[0011] The first eccentric wheel is arranged inside the fixed frame. The first eccentric wheel is coaxially and fixedly connected to the third gear. One side of the first eccentric wheel is rotatably connected to the connecting plate;

[0012] The second eccentric wheel is arranged inside the fixed frame. The second eccentric wheel is coaxially and fixedly connected to the fourth gear. One side of the second eccentric wheel is rotatably connected to the connecting plate.

[0013] Preferably, both ends of the first transmission rod are coaxially and fixedly connected to the first gear of the first driving assembly and the first gear of the second driving assembly respectively.

[0014] Preferably, one side of the connecting assembly of the first heat-sealing structure is fixedly connected with a first heat-sealing block;

[0015] One side of the connecting assembly of the second heat-sealing structure is fixedly provided with a second heat-sealing block;

[0016] The second heat-sealing block and the first heat-sealing block are arranged in a mirror image.

[0017] Preferably, the transmission structure includes a motor, a first idler roller, a second idler roller, a third idler roller, a fourth idler roller and a belt;

[0018] The motor is fixedly connected to the fixed frame. The output end of the motor is coaxially and fixedly connected to the first idler roller;

[0019] The first idler roller, the second idler roller, the third idler roller and the fourth idler roller are arranged at intervals in sequence along the length direction of the fixed frame. The first idler roller, the second idler roller, the third idler roller and the fourth idler roller are all in contact with the belt;

[0020] The second idler roller is coaxially and fixedly connected to the first gear of the first heat-sealing structure;

[0021] The third idler roller is rotatably connected to the fixed frame through a rotating shaft;

[0022] The fourth idler roller is coaxially and fixedly connected to the first gear of the second heat-sealing structure.

[0023] The beneficial effects obtained by the present utility model are:

[0024] At both ends of the connection component in the present utility model, a driving component is connected respectively, and these two driving components are drivingly connected through the same transmission rod, so that these two driving components can drive the connection component to move synchronously, further realizing that during the process of the two heat-sealing and sealing structures approaching each other, the forces at both ends of the connection component are consistent. The connection component is used to connect the heat-sealing and sealing blocks, thereby ensuring that each point of the heat-sealing and sealing blocks receives the same force during the sealing process, and thus improving the sealing quality.

[0025] In the present utility model, an eccentric wheel drives the first heat-sealing and sealing block and the second heat-sealing and sealing block to approach or move away from each other. This driving method can effectively improve the sealing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0027] Figure 1 is a schematic diagram of a heat-sealing and sealing device disclosed in the specific embodiment of the present utility model;

[0028] Figure 2 is another schematic diagram of a heat-sealing and sealing device disclosed in the specific embodiment of the present utility model;

[0029] Figure 3 is yet another schematic diagram of a heat-sealing and sealing device disclosed in the specific embodiment of the present utility model;

[0030] Figure 4 is the front view of a heat-sealing and sealing device disclosed in the specific embodiment of the present utility model;

[0031] Figure 5 is a schematic diagram of the first driving component and the connecting plate disclosed in the specific embodiment of the present utility model.

[0032] DESCRIPTION OF THE REFERENCE NUMERALS:

[0033] 1. First heat-sealing and sealing structure; 11. Connection component; 111. Connecting plate; 12. First driving component; 121. First gear; 122. Second gear; 123. Third gear; 124. Fourth gear; 125. First eccentric wheel; 126. Second eccentric wheel; 13. Second driving component; 14. First transmission rod; 2. Second heat-sealing and sealing structure; 15. First heat-sealing and sealing block; 16. Second heat-sealing and sealing block; 3. Transmission structure; 31. Motor; 32. First roller; 33. Second roller; 34. Third roller; 35. Fourth roller; 36. Belt; 4. Fixed frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0035] like Figures 1 - 5 As shown, the utility model discloses a heat sealing device, comprising a first heat sealing structure 1, a second heat sealing structure 2, a transmission structure 3 and a fixing frame 4. The fixing frame 4 is a hollow structure, and the fixing frame 4 is used to fix and install other structures.

[0036] The first heat-sealing structure 1 includes a connecting component 11, a first driving component 12, a second driving component 13 and a first transmission rod 14. Figure 1 The main body of the connecting component 11 is a rectangular block structure. A connecting plate 111 is fixedly connected to each of the two ends of the connecting component 11. The connecting plate 111 extends vertically. The outer sides of the two connecting plates 111 are respectively connected to the first driving component 12 and the second driving component 13. The first driving component 12 and the second driving component 13 have the same structure and are mirror-imaged. The first driving component 12 and the second driving component 13 jointly drive the connecting component 11 to move. The first driving component 12 and the second driving component 13 are connected by a first transmission rod 14.

[0037] Please refer to Figure 2 and Figure 5, as an embodiment of the first driving component 12, the first driving component 12 includes a first gear 121, a second gear 122, a third gear 123, a fourth gear 124, a first eccentric wheel 125 and a second eccentric wheel 126. The models of the first gear 121 and the second gear 122 can be selected according to actual needs. The third gear 123 and the fourth gear 124 must be gears of the same model. These four gears are all arranged outside the fixed frame 4. The first gear 121 is coaxially and fixedly connected to the first transmission rod 14. The first gear 121 meshes with the second gear 122. The second gear 122 is rotatably connected to the fixed frame 4 through a rotating shaft. The second gear 122 provides power for the third gear 123 and the fourth gear 124 at the same time, that is, the second gear 122 meshes with the third gear 123 and the fourth gear 124. The third gear 123 and the fourth gear 124 are both connected to the fixed frame 4 through a rotating shaft in a transmission manner, and the rotating shafts of the third gear 123 and the fourth gear 124 both pass through and are fixed to the fixed frame 4 and extend into the fixed frame 4. The first eccentric wheel 125 and the second eccentric wheel 126 are both arranged inside the fixed frame 4. The first eccentric wheel 125 is coaxially and fixedly connected to the third gear 123. The side of the first eccentric wheel 125 away from the fixed frame 4 is rotatably connected to the upper position of the connecting plate 111; the second eccentric wheel 126 is of the same model as the first eccentric wheel 125. The second eccentric wheel 126 is coaxially and fixedly connected to the fourth gear 124. The side of the second eccentric wheel 126 away from the fixed frame 4 is rotatably connected to the lower position of the connecting plate 111. Please refer to Figure 5 , when in use, the first gear 121 of the first driving component 12 is connected to the transmission structure 3 in a transmission manner. At this time, the transmission structure 3 drives the first gear 121 to rotate. The first gear 121 drives the second gear 122 to rotate. The second gear 122 drives the third gear 123 and the fourth gear 124 to rotate synchronously at the same time. The third gear 123 and the fourth gear 124 drive the first eccentric wheel 125 and the second eccentric wheel 126 to rotate. The first eccentric wheel 125 and the second eccentric wheel 126 can drive the connecting plate 111 to perform a curvilinear motion. The connecting plate 111 drives the connecting component 11 to perform a curvilinear motion.

[0038] The second driving component 13 has the same structure as the first driving component 12, and the two are arranged in a mirror image. The first gear of the second driving component 13 is also coaxially and fixedly connected to the first transmission rod 14. At this time, the two ends of the first transmission rod 14 are respectively coaxially and fixedly connected to the first gear 121 of the first driving component 12 and the first gear of the second driving component 13. Therefore, when in use, the first transmission rod 14 can drive the second driving component 13 and the first driving component 12 to operate synchronously. The working principle of the second driving component 13 is the same as that of the first driving component 12, and will not be elaborated here.

[0039] Please refer to again Figure 1, the structures of the second heat-sealing and closing structure 2 and the first heat-sealing and closing structure 1 are also the same, and the two are arranged in a mirror image, so details are not described herein again.

[0040] The transmission structure 3 is respectively drivingly connected to the first heat-sealing and closing structure 1 and the second heat-sealing and closing structure 2. Please refer to Figure 1 , the transmission structure 3 includes a motor 31, a first roller 32, a second roller 33, a third roller 34, a fourth roller 35 and a belt 36. The motor 31 is fixedly connected to the fixed frame 4, and the output end of the motor 31 is coaxially and fixedly connected to the first roller 32. The first roller 32, the second roller 33, the third roller 34 and the fourth roller 35 are sequentially arranged at intervals along the length direction of the fixed frame 4, and these four rollers are all in contact with the belt 36. The second roller 33 is coaxially and fixedly connected to the first gear 121 of the first heat-sealing and closing structure 1. The third roller 34 is rotatably connected to the fixed frame 4 through a rotating shaft. The third roller 34 only serves to support the belt 36 to improve the stability of the belt 36. The model of the fourth roller 35 is the same as that of the second roller 33, and the fourth roller 35 is coaxially and fixedly connected to the first gear of the second heat-sealing and closing structure 2. During use, the motor 31 drives the first roller 32 to rotate, the first roller 32 drives the belt 36 to rotate, the belt 36 drives the second roller 33 and the fourth roller 35 to rotate, and the second roller 33 and the fourth roller 35 respectively drive the first gear 121 of the first heat-sealing and closing structure 1 and the first gear of the second heat-sealing and closing structure 2 to rotate synchronously, further realizing the synchronous mirror operation of the first heat-sealing and closing structure 1 and the second heat-sealing and closing structure 2.

[0041] Please refer to Figure 1 One side of the connecting component 11 of the first heat-sealing and closing structure 1 is fixedly connected with a first heat-sealing block 15, and one side of the connecting component of the second heat-sealing and closing structure 2 is fixedly connected with a second heat-sealing block 16. The second heat-sealing block 16 and the first heat-sealing block 15 are arranged in a mirror image, and both are used for heat-sealing and closing the packaging bag. During use, the first heat-sealing and closing structure 1 and the second heat-sealing and closing structure 2 can respectively drive the first heat-sealing block 15 and the second heat-sealing block 16 to move. This principle has been introduced above, so details are not described herein again. The first heat-sealing block 15 and the second heat-sealing block 16 are both prior arts, so details are not described herein again.

[0042] During use, place the packaging bag to be sealed and cut between the first heat-sealing block 15 and the second heat-sealing block 16, start the motor 31, and the transmission structure 3 drives the first heat-sealing and closing structure 1 and the second heat-sealing and closing structure 2 to approach each other. When the distance between the first heat-sealing and closing structure 1 and the second heat-sealing and closing structure 2 is the closest, the first heat-sealing block 15 and the second heat-sealing block 16 seal the packaging bag and cut the packaging bag.

[0043] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

Claims

1. A heat sealing device, characterized in that: It comprises a first heat-sealing structure (1), a second heat-sealing structure (2) and a transmission structure (3); The first heat-sealing structure (1) comprises a connecting component (11), a first driving component (12), a second driving component (13) and a first transmission rod (14); two ends of the connecting component (11) are respectively connected to the first driving component (12) and the second driving component (13); the second driving component (13) and the first driving component (12) have the same structure; the second driving component (13) and the first driving component (12) are arranged in a mirror image; the first driving component (12) and the second driving component (13) jointly drive the connecting component (11) to move; the first driving component (12) and the second driving component (13) are connected in transmission via the first transmission rod (14); The second heat-sealing structure (2) has the same structure as the first heat-sealing structure (1), and the two are arranged in a mirror image; The transmission structure (3) is respectively connected in transmission with the first heat-sealing structure (1) and the second heat-sealing structure (2).

2. A heat sealing device according to claim 1, characterized in that: Both ends of the connection assembly (11) are fixedly connected with connection plates (111), the connection plates (111) extend vertically, and the two connection plates (111) are respectively connected to the first drive assembly (12) and the second drive assembly (13).

3. A heat sealing device according to claim 2, characterized in that: The first driving assembly (12) comprises a first gear (121), a second gear (122), a third gear (123), a fourth gear (124), a first eccentric wheel (125), and a second eccentric wheel (126); The first gear (121) is arranged outside the fixed frame (4); the first gear (121) is coaxially fixedly connected to the first transmission rod (14); the first gear (121) is meshed with the second gear (122); the second gear (122) is rotationally connected to the fixed frame (4) via a rotating shaft; the second gear (122) is simultaneously meshed with a third gear (123) and a fourth gear (124); the third gear (123) and the fourth gear (124) are identical; the third gear (123) and the fourth gear (124) are both transmission-connected to the fixed frame (4) via a rotating shaft; The first eccentric wheel (125) is arranged inside the fixed frame (4), the first eccentric wheel (125) is coaxially fixedly connected to the third gear (123), and one side of the first eccentric wheel (125) is rotatably connected to the connecting plate (111); The second eccentric wheel (126) is arranged inside the fixed frame (4), the second eccentric wheel (126) is coaxially fixedly connected to the fourth gear (124), and one side of the second eccentric wheel (126) is rotatably connected to the connecting plate (111).

4. A heat sealing device according to claim 3, characterized in that: Both ends of the first transmission rod (14) are coaxially fixedly connected to the first gear (121) of the first drive assembly (12) and the first gear of the second drive assembly (13), respectively.

5. A heat sealing device according to claim 1, characterized in that: A first heat-sealing block (15) is fixedly connected to one side of the connecting component (11) of the first heat-sealing structure (1); A second heat-sealing block (16) is fixedly provided on one side of the connecting component of the second heat-sealing structure (2); The second heat-sealing block (16) and the first heat-sealing block (15) are arranged in a mirror image.

6. A heat sealing device according to claim 3, characterized in that: The transmission structure (3) comprises a motor (31), a first roller (32), a second roller (33), a third roller (34), a fourth roller (35) and a belt (36); The motor (31) is fixedly connected to the fixed frame (4), and the output end of the motor (31) is coaxially fixedly connected to the first roller (32); The first roller (32), the second roller (33), the third roller (34) and the fourth roller (35) are arranged in sequence and spaced apart along the length direction of the fixed frame (4); the first roller (32), the second roller (33), the third roller (34) and the fourth roller (35) are all in contact with the belt (36); The second roller (33) is coaxially and fixedly connected to the first gear (121) of the first heat-sealing structure (1); The third roller (34) is rotatably connected to the fixed frame (4) via a rotating shaft; The fourth roller (35) is coaxially and fixedly connected to the first gear of the second heat-sealing structure (2).

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