Nitrogen blowing device of packaging machine

Abstract

The utility model belongs to the field of packaging machines, and provides a packaging machine nitrogen blowing device which comprises a rack platen, a stand column, a rotating disc, a machine clamp, a heat sealing assembly and a blowing assembly. Wherein the stand column is vertically connected to the rack bedplate; the turntable is rotationally mounted on the rack bedplate and is parallel to the rack bedplate; the machine clamps are connected to the rotary disc in pairs and arranged around the center of the rotary disc at intervals. The heat sealing assembly comprises a set of heat sealing heads arranged at intervals and a driving mechanism which is in transmission connection with the heat sealing heads and can drive the heat sealing heads to be close to or away from each other. The air blowing assembly comprises an air cylinder connected to the stand column and a nitrogen input pipe connected to the output end of the air cylinder and capable of blowing out nitrogen. The air cylinder is used for driving the nitrogen input pipe, and the moving path of the nitrogen input pipe penetrates through the heat sealing heads and intersects with the feeding path of the machine clamp.

Description

Technical Field

[0001] This application belongs to the field of packaging machines, and particularly relates to a nitrogen blowing device for a packaging machine. Background Art

[0002] In the packaging of food, medicine, and certain sensitive commodities, introducing nitrogen has become a common means of preservation and protection. This is mainly due to the unique physical and chemical properties of nitrogen, which can significantly extend the shelf life of commodities. However, despite the significant advantages of nitrogen packaging, the device for introducing nitrogen into the packaging bag in traditional packaging machines has low efficiency in the nitrogen blowing process due to poor structural design, making it difficult to meet the increasing high-speed packaging requirements. Therefore, it is necessary to solve the above technical problems. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a nitrogen blowing device for a packaging machine to solve the technical problem of low nitrogen blowing efficiency in existing packaging machines.

[0004] To achieve the above purpose, the technical solution adopted in this application is: to provide a nitrogen blowing device for a packaging machine, including:

[0005] A frame table board;

[0006] A column, vertically connected to the frame table board;

[0007] A turntable, rotatably installed on the frame table board and parallel to the frame table board;

[0008] Machine clamps, connected in pairs to the turntable and arranged in multiple groups at intervals around the center of the turntable;

[0009] A heat sealing assembly, including a set of heat sealing heads arranged at intervals and a driving mechanism drivingly connected to the heat sealing heads and capable of driving the heat sealing heads to approach or move away from each other;

[0010] A blowing assembly, including a cylinder connected to the column and a nitrogen input pipe connected to the output end of the cylinder and capable of blowing nitrogen. The cylinder is used to drive the nitrogen input pipe, and the moving path of the nitrogen input pipe passes between the heat sealing heads and intersects with the feeding path of the machine clamps.

[0011] Optionally, the blowing assembly further includes a support seat connected to the column and used to support the cylinder, a sliding seat connected to the power end of the cylinder and used to support the nitrogen input pipe, and a guide rod connected to the sliding seat and passing through the support seat;

[0012] The guide rod is slidably connected to the support seat, and the sliding direction of the guide rod relative to the support seat is parallel to the moving direction of the nitrogen input pipe.

[0013] Optionally, the blowing component further includes a position sensor communicatively connected to the driving mechanism;

[0014] The position sensor is connected to the support base and is used to detect the moving position of the nitrogen input pipe.

[0015] Optionally, the driving mechanism includes a servo motor mounted on the column, a rotating shaft connected to the output end of the servo motor, and a gear coaxially connected to the rotating shaft, and further includes an upper pull rod and a lower pull rod that are parallel to each other and heat-sealing seats respectively connected to the upper pull rod and the lower pull rod;

[0016] The heat-sealing head is connected to the heat-sealing seat. The gear is located between the upper pull rod and the lower pull rod, and racks capable of being in transmission cooperation with the gear are respectively formed on one sides of the upper pull rod and the lower pull rod facing the gear. The servo motor is used to make the upper pull rod and the lower pull rod reciprocate along their respective axial directions through the transmission cooperation of the gear and the racks.

[0017] Optionally, the driving mechanism further includes a box body connected to the column;

[0018] Both the gear and the racks are located inside the box body, the heat-sealing seat is located outside the box body, and the upper pull rod and the lower pull rod both penetrate through the side wall of the box body.

[0019] Optionally, the driving mechanism further includes guide cylinders coaxially sleeved on the upper pull rod and the lower pull rod respectively;

[0020] The guide cylinders are connected to the box body, and the upper pull rod and the lower pull rod are respectively slidably connected to the box body through the corresponding guide cylinders.

[0021] Optionally, the driving mechanism further includes a torque sensor communicatively connected to the servo motor;

[0022] The torque sensor is connected to the outer wall of the box body and is used to detect the torque magnitude of the rotating shaft. The servo motor and the torque sensor are respectively arranged on two opposite sides of the box body.

[0023] The beneficial effects of the nitrogen blowing device for the packaging machine provided in this application are as follows: Compared with the prior art, in the nitrogen blowing device for the packaging machine provided in this application, since multiple groups of clamping mechanisms are arranged at intervals on the turntable around the center of the turntable and the moving path of the nitrogen input pipe intersects with the feeding path of the clamping mechanism, as the turntable continues to rotate, multiple groups of clamping mechanisms connected to the turntable can quickly and sequentially rotate multiple target packaging bags to the position corresponding to the blowing assembly. In this way, when the nitrogen input pipe penetrates the gap between the hot sealing heads under the action of the cylinder and extends into the target packaging bag, nitrogen can be quickly blown into the packaging bag. And when the nitrogen input pipe retracts back to the initial position in the opposite direction, the hot sealing heads that can approach each other can quickly heat-seal the opening end of the packaging bag. Therefore, the nitrogen blowing efficiency of the nitrogen blowing device for the packaging machine in this application can be significantly improved, far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the nitrogen blowing device for the packaging machine provided in the embodiment of this application;

[0026] Figure 2 It is a schematic diagram of another perspective of the nitrogen blowing device for the packaging machine provided in the embodiment of this application.

[0027] Among them, each reference numeral in the figure: 101, frame table board; 102, column; 103, turntable; 104, clamping mechanism; 105, hot sealing head; 106, cylinder; 107, nitrogen input pipe; 108, support seat; 109, sliding seat; 110, guide rod; 111, position sensor; 112, servo motor; 113, rotating shaft; 114, gear; 115, upper pull rod; 116, lower pull rod; 117, hot sealing seat; 118, rack; 119, box body; 120, guide cylinder; 121, torque sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following further details this application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0029] 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.

[0030] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" 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.

[0031] 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.

[0032] Please also read Figure 1 and Figure 2 Now, a nitrogen blowing device for a packaging machine provided in an embodiment of the present application is described. The nitrogen blowing device for a packaging machine includes a frame plate 101, a column 102, a turntable 103, a machine clamp 104, a heat sealing component and a blowing component. Among them:

[0033] The column 102 is vertically connected to the frame platen 101; the turntable 103 is rotatably installed on the frame platen 101 and is parallel to the frame platen 101; the machine clamps 104 are connected to the turntable 103 in pairs and multiple groups are arranged around the center of the turntable 103; the heat sealing assembly includes a group of heat sealing heads 105 arranged at intervals and a driving mechanism that is transmission-connected to the heat sealing heads 105 and can drive the heat sealing heads 105 to move closer to or away from each other; the blowing assembly includes a cylinder 106 connected to the column 102 and a nitrogen input pipe 107 connected to the output end of the cylinder 106 and can blow out nitrogen, the cylinder 106 is used to drive the nitrogen input pipe 107 and the moving path of the nitrogen input pipe 107 passes between the heat sealing heads 105 and intersects with the feeding path of the machine clamps 104.

[0034] According to the above structure provided in this embodiment, in the nitrogen blowing device of the packaging machine provided in the embodiment, since multiple groups of clamping mechanisms 104 are arranged at intervals on the turntable 103 around the center of the turntable 103 and the moving path of the nitrogen input pipe 107 intersects with the feeding path of the clamping mechanism 104, as the turntable 103 continuously rotates, multiple groups of clamping mechanisms 104 connected to the turntable 103 can quickly and sequentially rotate multiple target packaging bags to the position corresponding to the blowing assembly. In this way, when the nitrogen input pipe 107 penetrates the gap between the hot sealing heads 105 under the action of the cylinder 106 and extends into the target packaging bag, nitrogen can be quickly blown into the packaging bag. When the nitrogen input pipe 107 retracts back to the initial position in the opposite direction, the hot sealing heads 105 that can approach each other can quickly heat-seal the open end of the packaging bag. Therefore, the nitrogen blowing efficiency of the nitrogen blowing device of the packaging machine in this embodiment can be significantly improved, far superior to the prior art.

[0035] In another embodiment of the present application, please refer to Figure 1 and Figure 2 , the blowing assembly further includes a support seat 108 connected to the column 102 and used to support the cylinder 106, a sliding seat 109 connected to the power end of the cylinder 106 and used to support the nitrogen input pipe 107, and a guide rod 110 connected to the sliding seat 109 and passing through the support seat 108; the guide rod 110 is slidably connected to the support seat 108 and the sliding direction of the guide rod 110 relative to the support seat 108 is parallel to the moving direction of the nitrogen input pipe 107. According to the above structure provided in this embodiment, the guide rod 110 slidably connected to the support seat 108 can effectively ensure that the nitrogen input pipe 107 moves stably and quickly under the driving action of the cylinder 106, which is beneficial to further improving the nitrogen blowing efficiency of the nitrogen blowing device of the packaging machine in this embodiment.

[0036] In another embodiment of the present application, please refer to Figure 1 and Figure 2 , the blowing assembly further includes a position sensor 111 communicatively connected to the driving mechanism; the position sensor 111 is connected to the support seat 108 and used to detect the moving position of the nitrogen input pipe 107. According to the above structure provided in this embodiment, the position sensor 111 communicatively connected to the driving mechanism can effectively ensure that the hot sealing heads 105 approach each other after the nitrogen input pipe 107 exits the gap between the hot sealing heads 105 by detecting the position of the nitrogen input pipe 107. In this way, damage to the nitrogen input pipe 107 and the hot sealing heads 105 can be well avoided and it is beneficial to enable the nitrogen blowing device of the packaging machine in this embodiment to be used stably for a long time.

[0037] In another embodiment of the present application, please refer to Figure 1 and Figure 2, the driving mechanism includes a servo motor 112 installed on the column 102, a rotating shaft 113 connected to the output end of the servo motor 112, and a gear 114 coaxially connected to the rotating shaft 113. It also includes an upper pull rod 115 and a lower pull rod 116 that are parallel to each other, and heat sealing seats 117 respectively connected to the upper pull rod 115 and the lower pull rod 116; the heat sealing head 105 is connected to the heat sealing seat 117. The gear 114 is located between the upper pull rod 115 and the lower pull rod 116, and on the sides of the upper pull rod 115 and the lower pull rod 116 facing the gear 114, racks 118 capable of driving cooperation with the gear 114 are respectively formed. The servo motor 112 is used to drive the upper pull rod 115 and the lower pull rod 116 to reciprocate along their respective axial directions through the driving cooperation of the gear 114 and the racks 118.

[0038] According to the above structure provided in this embodiment, since the upper pull rod 115 and the lower pull rod 116 are parallel to each other and distributed on both sides of the gear 114, and the upper pull rod 115 and the lower pull rod 116 are respectively in driving cooperation with the gear 114 through the racks 118, when the servo motor 112 drives the rotating shaft 113 and the gear 114 to rotate, the upper pull rod 115 and the lower pull rod 116 can reciprocate rapidly along their respective axial directions, and the moving directions of the upper pull rod 115 and the lower pull rod 116 are opposite. In this way, the heat sealing seats 117 respectively connected to the upper pull rod 115 and the lower pull rod 116 can drive the heat sealing head 105 to approach or move away from each other rapidly and complete the sealing operation, which is conducive to further improving the nitrogen blowing efficiency of the nitrogen blowing device of the packaging machine in this embodiment.

[0039] In another embodiment of the present application, please refer to Figure 1 and Figure 2 , the driving mechanism further includes a box body 119 connected to the column 102; the gear 114 and the racks 118 are both located inside the box body 119, the heat sealing seat 117 is located outside the box body 119, and the upper pull rod 115 and the lower pull rod 116 both penetrate through the side wall of the box body 119. According to the above structure provided in this embodiment, the box body 119 connected to the column 102 can protect the gear 114 and the racks 118, so that the two can cooperate with each other stably for a long time, which is conducive to further improving the nitrogen blowing efficiency of the nitrogen blowing device of the packaging machine in this embodiment.

[0040] In another embodiment of the present application, please refer to Figure 1 and Figure 2, the drive mechanism further includes guide cylinders 120 coaxially sleeved on the upper pull rod 115 and the lower pull rod 116 respectively; the guide cylinders 120 are connected to the box body 119, and the upper pull rod 115 and the lower pull rod 116 are respectively slidably connected to the box body 119 through the corresponding guide cylinders 120. According to the above structure provided in this embodiment, the guide cylinders 120 connected to the box body 119 can enable the upper pull rod 115 and the lower pull rod 116 to slide relative to the box body 119 more quickly, which is beneficial to further improving the nitrogen blowing efficiency of the nitrogen blowing device of the packaging machine in this embodiment.

[0041] In another embodiment of the present application, please refer to Figure 1 and Figure 2 , the drive mechanism further includes a torque sensor 121 communicatively connected to the servo motor 112; the torque sensor 121 is connected to the outer wall of the box body 119 and is used to detect the torque of the rotating shaft 113. In this embodiment, the servo motor 112 and the torque sensor 121 are respectively arranged on opposite sides of the box body 119. According to the above structure provided in this embodiment, the torque sensor 121 connected to the box body 119 can judge whether the nitrogen input pipe 107 completely exits the interval between the hot heads 105 by detecting the torque of the rotating shaft 113, which can well avoid damage to the nitrogen input pipe 107 and the hot heads 105 and is beneficial to enabling the nitrogen blowing device of the packaging machine in this embodiment to be used stably for a long time. It should be noted that in the embodiment of the present application provided with the position sensor 111, further setting the torque sensor 121 can enable the torque sensor 121 to cooperate with the position sensor 111 to jointly detect whether the nitrogen input pipe 107 completely exits the interval between the hot heads 105, which is beneficial to further enabling the nitrogen blowing device of the packaging machine in this embodiment to be used stably for a long time.

[0042] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A nitrogen blowing device for a packaging machine, characterized in that: include: Rack plate (101); A column (102) vertically connected to the frame plate (101); A turntable (103) rotatably mounted on the frame platen (101) and parallel to the frame platen (101); Machine clamps (104) are connected to the rotating disk (103) in pairs and are arranged in multiple groups at intervals around the center of the rotating disk (103); A heat sealing assembly, comprising a group of heat sealing heads (105) arranged at intervals and a driving mechanism which is transmission-connected to the heat sealing heads (105) and is capable of driving the heat sealing heads (105) to move closer to or farther from each other; The blowing assembly comprises a cylinder (106) connected to the column (102) and a nitrogen input pipe (107) connected to the output end of the cylinder (106) and capable of blowing out nitrogen. The cylinder (106) is used to drive the nitrogen input pipe (107) and the moving path of the nitrogen input pipe (107) passes through between the heat sealing heads (105) and intersects with the feeding path of the machine clamp (104).

2. The nitrogen blowing device for a packaging machine according to claim 1, characterized in that: The blowing assembly further comprises a support seat (108) connected to the column (102) and used to support the cylinder (106), a sliding seat (109) connected to the power end of the cylinder (106) and used to support the nitrogen input pipe (107), and a guide rod (110) connected to the sliding seat (109) and passing through the support seat (108); The guide rod (110) is slidably connected to the support seat (108), and a sliding direction of the guide rod (110) relative to the support seat (108) is parallel to a moving direction of the nitrogen input pipe (107).

3. The nitrogen blowing device for a packaging machine as claimed in claim 2, characterized in that: The blowing assembly further comprises a position sensor (111) which is in communication with the driving mechanism; The position sensor (111) is connected to the support seat (108) and is used to detect the moving position of the nitrogen inlet pipe (107).

4. The nitrogen blowing device for a packaging machine according to any one of claims 1 to 3, characterized in that: The driving mechanism comprises a servo motor (112) mounted on the column (102), a rotating shaft (113) connected to the output end of the servo motor (112), and a gear (114) coaxially connected to the rotating shaft (113), and also comprises an upper pull rod (115) and a lower pull rod (116) parallel to each other, and a heat sealing seat (117) respectively connected to the upper pull rod (115) and the lower pull rod (116); The heat sealing head (105) is connected to the heat sealing seat (117), the gear (114) is located between the upper pull rod (115) and the lower pull rod (116), and the upper pull rod (115) and the lower pull rod (116) respectively form a rack (118) on one side facing the gear (114) and capable of transmission cooperation with the gear (114), and the servo motor (112) is used to transmit and cooperate with the gear (114) and the rack (118) so that the upper pull rod (115) and the lower pull rod (116) can each reciprocate along their own axis.

5. The nitrogen blowing device for packaging machine according to claim 4, characterized in that: The driving mechanism further comprises a box (119) connected to the column (102); The gear (114) and the rack (118) are both located inside the box body (119), the heat sealing seat (117) is located outside the box body (119), and the upper pull rod (115) and the lower pull rod (116) both pass through the side wall of the box body (119).

6. The nitrogen blowing device for a packaging machine as claimed in claim 5, characterized in that: The driving mechanism further comprises a guide cylinder (120) coaxially mounted on the upper pull rod (115) and the lower pull rod (116); The guide cylinder (120) is connected to the box body (119), and the upper pull rod (115) and the lower pull rod (116) are respectively slidably connected to the box body (119) via the corresponding guide cylinder (120).

7. The nitrogen blowing device for a packaging machine as claimed in claim 5, characterized in that: The driving mechanism further comprises a torque sensor (121) communicatively connected to the servo motor (112); The torque sensor (121) is connected to the outer wall of the box (119) and is used to detect the torque magnitude of the rotating shaft (113). The servo motor (112) and the torque sensor (121) are arranged on two opposite sides of the box (119).

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