Power system of bag sealing machine

Abstract

The utility model discloses a power system of a bag sealing machine, and relates to the technical field of bag sealing machines, the power system comprises a forward and reverse transmission mechanism, a double-head motor and a vacuum pump, and an output shaft at one end of the double-head motor is directly connected with the forward and reverse transmission mechanism or connected with the forward and reverse transmission mechanism through a first transmission device; an output shaft at the other end of the double-end motor is directly connected with the vacuum pump or connected with the vacuum pump through a second transmission device, the double-end motor only drives the forward and reverse transmission mechanism to act when rotating forwards, and the double-end motor only drives the vacuum pump to work when rotating reversely. Bag feeding power and vacuumizing are integrated, the structure is compact, the size is small, and the unexpected situation that bag feeding and vacuumizing are conducted at the same time is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to a bag sealing machine, in particular to a power system of a bag sealing machine. BACKGROUND

[0002] The bag sealing machine refers to a machine for sealing a bag after food is packaged in the bag. The sealed bag can be used to store food in a sealed manner, and the bag can be automatically sealed. A power system is needed to drive a bag feeding mechanism to feed the bag and realize continuous sealing. A roller mechanism is disclosed in Chinese patent CN218431924U. If the shelf life of food needs to be prolonged, the food needs to be vacuumized before being packaged. A vacuumizing device is needed to vacuumize the bag before it is completely sealed. The device for directly vacuumizing the bag has low working efficiency. Therefore, an indirect vacuumizing system is used, that is, the bag is vacuumized by vacuumizing the cavity. The bag feeding power system and the vacuumizing system in the prior art are independently arranged, which increases the size and cost of the equipment. The bag feeding process and the vacuumizing process in the prior art are independently operated, which may cause the bag feeding process and the vacuumizing process to be simultaneously performed. CONTENT

[0003] Therefore, the application provides a power system of a bag sealing machine to solve the technical problems of large size and high cost of the existing power system.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme.

[0005] A power system of a bag sealing machine comprises a forward-reverse transmission mechanism, a double-head motor and a vacuum pump. One end of the output shaft of the double-head motor is directly connected with the forward-reverse transmission mechanism or connected with the forward-reverse transmission mechanism through a first transmission device. The other end of the output shaft of the double-head motor is directly connected with the vacuum pump or connected with the vacuum pump through a second transmission device. The double-head motor drives only the forward-reverse transmission mechanism to move when the double-head motor rotates in the forward direction. The double-head motor drives only the vacuum pump to work when the double-head motor rotates in the reverse direction.

[0006] Further, the forward-reverse transmission mechanism comprises an internal ratchet gear ring and a pawl disc arranged in the internal ratchet gear ring. The double-head motor drives the pawl disc to rotate in the forward direction and the reverse direction. The internal ratchet gear ring is connected with a rotating execution mechanism.

[0007] Still further, the forward-reverse transmission mechanism further comprises a hollow shaft penetrating through the side wall of the working cavity of the heat sealing head of the bag sealing machine. The pawl disc is mounted on the hollow shaft. The other end of the hollow shaft extends into a transition cavity. The air inlet of the vacuum pump is connected with the transition cavity.

[0008] Further, the first transmission device is a speed reducer arranged in the transition cavity, an input end of the speed reducer is connected with the double-head motor, an output end of the speed reducer is connected with the hollow shaft, and the hollow shaft is connected with the transition cavity in a penetrating mode.

[0009] Further, the output shaft of the double-head motor is parallel or perpendicular to the hollow shaft.

[0010] From the above technical solution, the advantages of the present application are:

[0011] 1. In the present application, the double-head motor, the vacuum pump and the forward-reverse transmission mechanism are integrally arranged, the forward and reverse rotation of the double-head motor is used to control the bag feeding and vacuum pumping to work independently, the structure is compact and small in size, the bag feeding function and the vacuum pumping function share the same double-head motor, the utilization rate of the double-head motor is high, the equipment cost is reduced, and the bag feeding function and the vacuum pumping function can only be selected to work, so that the bag can keep a stable position during vacuum pumping, and the vacuum pumping effect is controllable. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated herein for purposes of explanation and are not intended to limit the application.

[0013] Figure 1 is a use state schematic diagram of the present application Figure 1 .

[0014] Figure 2 is a use state schematic diagram of the present application Figure 2 .

[0015] Figure 3 is a B-B direction sectional view schematic diagram in the present application Figure 2 .

[0016] Figure 4 is a structure schematic diagram of the forward-reverse transmission mechanism of the present application.

[0017] Legend: 9-forward-reverse transmission mechanism; 91-double row gear; 92-first driven gear; 93-second driven gear; 94-internal built-in ratchet gear ring; 95-pawl disc; 96-hollow shaft; 10-double-head motor; 11-vacuum pump; 12-transition cavity. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present application more clear and understandable, the present application will be further described in detail below in combination with the embodiments and drawings. Herein, the schematic embodiments of the present application and the description thereof are used to explain the present application, but not as a limitation on the present application.

[0019] ReferenceFigures 1 to 4 As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , a power system of a bag sealing machine comprises a forward-reverse transmission mechanism 9, a double-head motor 10 and a vacuum pump 11, one end of the output shaft of the double-head motor 10 is directly connected with the forward-reverse transmission mechanism 9 or connected with the forward-reverse transmission mechanism 9 through a first transmission device, the other end of the output shaft of the double-head motor 10 is directly connected with the vacuum pump 11 or connected with the vacuum pump 11 through a second transmission device, the double-head motor 10 drives only the forward-reverse transmission mechanism 9 to act when rotating forward, and the double-head motor 10 drives only the vacuum pump 11 to work when rotating reversely. In the present scheme, the independent driving system and the vacuum suction system in the prior art are arranged independently of each other, the double-head motor 10 is used to control the bag feeding drive and the vacuum start by reversing, so that the device structure is more compact, the volume is smaller, the cost is lower, and the mistake that the bag feeding action and the vacuum suction action occur at the same time does not occur.

[0020] In the present application, the forward-reverse transmission mechanism 9 can be a one-way bearing, which uses the one-way rotation function of the one-way bearing to meet the one-way movement of the upper rotary bag feeding mechanism 6, but the one-way bearing has limited torque on one hand and high cost on the other hand.

[0021] In order to meet the large torque, as shown in Figure 4 , preferably in the present embodiment, the forward-reverse transmission mechanism 9 comprises an internal ratchet gear ring 94 and a pawl disc 95 arranged in the internal ratchet gear ring 94, the double-head motor 10 drives the pawl disc 95 to rotate forward and reversely, and the internal ratchet gear ring 94 is connected with a rotary actuator through a transmission mechanism. When working, the double-head motor 10 drives the internal ratchet gear ring 94 to rotate when driving the pawl disc 95 to rotate forward, thereby overcoming a certain damping force to drive the rotary actuator to act to feed the bag; when the double-head motor 10 drives the pawl disc 95 to rotate reversely, the rotary actuator itself or an elastic damping mechanism arranged on the rack 1 is used to make the rotary actuator keep in a stationary state, thereby making the bag keep in a stable position without moving in the vacuum state, and at the same time the double-head motor 10 drives the vacuum pump 11 to perform the vacuum suction action on the sealed cavity to complete the vacuum suction work.

[0022] For the vacuum pump 11 which cannot rotate reversely, a one-way bearing or the ratchet gear structure described above can be used to connect the vacuum pump 11 with the double-head motor 10, so that the rotation system of the vacuum pump 11 rotates in one direction.

[0023] In the present application, the air inlet of the vacuum pump 11 can be directly connected with the vacuum hole arranged on the side wall of the working cavity of the heat sealing head.

[0024] In the embodiment, the forward and reverse transmission mechanism 9 further comprises a hollow shaft 96 penetrating the working cavity side wall of the heat sealing head of the bag sealing machine, the pawl disc 95 is installed on the hollow shaft 96, the other end of the hollow shaft 96 extends into the transition cavity 12, the air inlet of the vacuum pump 11 is in communication with the transition cavity 12, the double-head motor 10 is connected with the hollow shaft 96 through gear transmission structure or chain transmission structure, and the port of the hollow shaft 96 is in an open state. In work, since the sealing cavity of the bag sealing machine, the hollow shaft 96 and the transition cavity 12 are in communication, the air inlet of the vacuum pump 11 is directly connected with the transition cavity 12 through the vacuum suction pipe, the structure can shorten the use distance of the vacuum suction pipe, is more beautiful, can avoid reprocessing the vacuum hole on the shell of the heat sealing head, and the connection of the vacuum suction pipe is more convenient. When the vacuum suction pipe is a hose, since the length of the vacuum suction pipe is short, the strength is increased, and the deformation is not easy, the vacuum suction pipe can be avoided from being adsorbed and deformed to affect the vacuum efficiency.

[0025] In the embodiment, the first transmission device is preferably a speed reducer, the input end of the speed reducer is connected with the double-head motor 10, and the output end of the speed reducer is connected with the hollow shaft 96. The speed of the bag conveying is adjusted through the use of the speed reducer, and the hollow shaft 96 penetrates the speed reducer and is in communication with the transition cavity 12.

[0026] In the application, the speed reducer can be a gear set mechanism or a worm and gear mechanism. When the speed reducer is a worm and gear mechanism, the double-head motor 10 is connected with the worm, and the hollow shaft 96 is connected with the worm gear.

[0027] In the embodiment, the speed reducer is located in the transition cavity 12. The sealing property of the transition cavity 12 can reduce noise and protect the speed reducer, so that the service life of the speed reducer is not affected by moisture or dust in the air.

[0028] Through the use of the speed reducer, the output shaft of the double-head motor 10 and the hollow shaft 96 can be parallel or perpendicular to each other. The direction of the double-head motor 10 can be adjusted according to the space layout.

[0029] The first transmission device can also be a constant velocity gear transmission device or a chain transmission device.

[0030] In the embodiment, the second transmission device can be a gear transmission device or a chain transmission device or a synchronous belt transmission device. Through the use of the second transmission device, the vacuum pump 11 can be located at the end or side of the double-head motor 10, and the function of the double-head motor 10 driving the vacuum pump 11 is not affected.

[0031] In the application, the rotating actuator can be a roller structure, a chain transmission mechanism or a bevel gear assembly in the prior art.

[0032] In the embodiment, the rotating actuator comprises a double row gear 91 arranged on the hollow shaft 96 and synchronously rotating with the built-in ratchet gear ring 94, and a first driven gear 92 and a second driven gear 93 engaged with different gear rings of the double row gear 91, the first driven gear 92 and the second driven gear 93 are respectively connected with corresponding rollers or pulleys to realize bag conveying driving. By adopting the structure, the first driven gear 92 and the second driven gear 93 can be synchronously turned, and by synchronously driving the two rollers or two synchronous pulleys to move, the bag conveying power can be increased, and the forces on both sides of the double row gear 91 can be balanced, avoiding deformation of the hollow shaft 96 caused by long-term unidirectional force.

[0033] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. The embodiments of the present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power system for a bag sealer, characterized by, The positive and reverse transmission mechanism (9), double head motor (10) and vacuum pump (11), one end output shaft of the double head motor (10) is directly connected with the positive and reverse transmission mechanism (9) or connected with the positive and reverse transmission mechanism (9) through the first transmission device, the other end output shaft of the double head motor (10) is directly connected with the vacuum pump (11) or connected with the vacuum pump (11) through the second transmission device, the double head motor (10) positive rotation only drives the positive and reverse transmission mechanism (9) to act, the double head motor (10) reverse rotation only drives the vacuum pump (11) to work.

2. The power system of a bag sealer according to claim 1, wherein, The positive and reverse transmission mechanism (9) includes built-in ratchet gear ring (94) and pawl disc (95) arranged in the built-in ratchet gear ring (94), the double head motor (10) drives the pawl disc (95) to rotate forward and reverse, the built-in ratchet gear ring (94) is connected with the rotary actuator.

3. The power system of a bag sealer according to claim 2, wherein, The positive and reverse transmission mechanism (9) further includes hollow shaft (96) penetrating the working cavity side wall of the heat sealing machine head of the bag sealing machine, the pawl disc (95) is installed on the hollow shaft (96), the other end of the hollow shaft (96) extends into the transition cavity (12), the air inlet of the vacuum pump (11) is connected with the transition cavity (12).

4. The power system of a bag sealer according to claim 3, wherein, The first transmission device is a speed reducer arranged in the transition cavity (12), the input end of the speed reducer is connected with the double head motor (10), the output end of the speed reducer is connected with the hollow shaft (96), and the hollow shaft (96) penetrates the speed reducer and communicates with the transition cavity (12).

5. The power system of a bag sealer according to claim 4, wherein, The output shaft of the double head motor (10) is parallel or perpendicular to the hollow shaft (96).

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