Main transmission mechanism of bag making machine

Abstract

The utility model discloses a main transmission mechanism of a bag making machine, comprising a frame, a plurality of groups of movable guide plates arranged on both sides of the frame, and a driving device drivingly connected to the movable guide plates, the two ends of the movable guide plates are respectively arranged on the frame through a rotating shaft, the two ends of the movable guide plates are respectively driven and connected to the corresponding rotating shaft through a connecting rod mechanism, the driving device comprises a motor and a transmission device drivingly connected to the motor, and the rotating shaft is respectively connected to the motor through the transmission device. The utility model has a compact structure, and the motor and the transmission device are arranged in the frame, which reduces space occupation.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging, in particular to a main transmission mechanism of a bag making machine. Background Art

[0002] Bag making machine is a kind of equipment for making various plastic packaging bags. With the development of society, plastic packaging bags have become an indispensable product in people's lives. Bag making machine includes longitudinal sealing mechanism, transverse sealing mechanism and hot spot mechanism etc. which are spaced apart along the conveying direction. Each mechanism must be equipped with a separate driving mechanism, which makes the overall structure of bag making machine complex and the synchronization between mechanisms is poor. It is easy to pull the film materials of adjacent stations, causing deformation of film materials and poor precision. Therefore, it is necessary to propose improvements. Utility Model Content

[0003] The purpose of the utility model is to provide a main transmission mechanism of a bag making machine to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A main transmission mechanism of a bag making machine comprises a frame, a plurality of groups of movable guide plates arranged on both sides of the frame and a driving device driven and connected to the movable guide plates, wherein the two ends of the movable guide plates are respectively arranged on the frame through rotating shafts, and the two ends of the movable guide plates are respectively driven and connected to the corresponding rotating shafts through connecting rod mechanisms, and the driving device comprises a motor and a transmission device driven and connected to the motor, and the rotating shafts are respectively connected to the motor through the transmission devices.

[0006] Furthermore, in the main transmission mechanism of the bag-making machine, both ends of the rotating shaft are rotatably connected to the frame through a first bearing seat, and both ends of the rotating shaft protrude from the frame.

[0007] Furthermore, in the main transmission mechanism of the above-mentioned bag-making machine, the connecting rod mechanism includes a first rocker arm having one end sleeved on a rotating shaft and a transmission seat connected between the first rocker arm and the movable guide plate, a hinged rod protruding from the side surface of one end of the first rocker arm away from the rotating shaft, and rotatably connected to the transmission seat, and the transmission seat is hinged to the corresponding end portion of the movable guide plate.

[0008] Furthermore, in the main transmission mechanism of the above-mentioned bag making machine, the transmission device includes an eccentric device drivingly connected to the motor and a swing device connected to the rotating shaft, the eccentric device is drivingly connected to the swing device through a connecting device, and a synchronization rod is connected between adjacent swing devices.

[0009] Furthermore, in the main transmission mechanism of the above-mentioned bag-making machine, the eccentric device includes a driving shaft whose two ends are rotatably arranged at the bottom of the frame through a second bearing seat, the driving shaft is connected to the motor through a synchronous belt drive, and the two ends of the driving shaft are respectively sleeved with eccentric disks, and the connecting devices are respectively sleeved on the corresponding eccentric disks.

[0010] Furthermore, in the main transmission mechanism of the bag-making machine, a groove is provided on the top surface of the second bearing seat, and the eccentric disk is arranged in the corresponding groove.

[0011] Furthermore, in the main transmission mechanism of the bag making machine, the connecting device is sleeved on the spherical bearing of the eccentric disk and a connecting rod with one end connected to the spherical bearing, and the other end of the connecting rod is provided with a connecting sleeve connected to the swing device.

[0012] Furthermore, in the main transmission mechanism of the above-mentioned bag-making machine, the swing device includes a first fork arm, a second fork arm and a second rocker arm which are hinged in sequence, one end of the first fork arm facing away from the second fork arm is hinged to the bottom of the frame, one end of the second rocker arm facing away from the second fork arm is drive-connected to the corresponding rotating shaft, and the first fork arm and the second fork arm are hinged through a swing shaft.

[0013] Furthermore, in the main transmission mechanism of the bag making machine, a swing sleeve is provided at the hinge of the first fork arm and the second fork arm, the swing shaft rotates and passes through the swing sleeve, and the two ends of the synchronization rod are respectively connected to the corresponding swing sleeves.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model has a compact structure, a motor and a transmission device are arranged in a frame, space occupation is reduced, and the same motor drives all movable guide plates to rise and fall, thus simplifying the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the main transmission mechanism of a bag making machine in a specific embodiment of the utility model.

[0017] Figure 2 It is an axial view of the main transmission mechanism of the bag making machine in a specific embodiment of the utility model.

[0018] Figure 3 It is a schematic diagram of the connection between the movable guide plate and the driving device in a specific embodiment of the utility model.

[0019] Figure 4 It is a structural schematic diagram of a connecting rod mechanism in a specific embodiment of the utility model.

[0020] Figure 5 It is a schematic structural diagram of a driving device in a specific embodiment of the utility model.

[0021] Figure 6 It is a structural schematic diagram of an eccentric device in a specific embodiment of the utility model.

[0022] Figure 7 It is a structural schematic diagram of a swing device in a specific embodiment of the utility model. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figures 1 to 7 As shown, a main transmission mechanism of a bag making machine includes a frame, a plurality of groups of movable guide plates 1 arranged on both sides of the frame and a driving device drivingly connected to the movable guide plates 1, the two ends of the movable guide plates 1 are respectively arranged on the frame through a rotating shaft 2, the two ends of the movable guide plates 1 are respectively driven and connected to the corresponding rotating shafts 2 through a connecting rod mechanism 3, the driving device includes a motor 4 and a transmission device drivingly connected to the motor 4, and the rotating shafts 2 are respectively connected to the motor 4 through the transmission device.

[0025] In this technical solution, the frame is an existing structure, which is spliced ​​together by wall panels, partitions and table foot bolts. The movable guide plates are also an existing structure, and are arranged in groups of two on both sides of the frame. The motor drives the rotating shaft to rotate through the transmission device, and the rotating shaft drives the movable guide plates to rise and fall through the connecting rod structure. The motor and the transmission device are arranged in the frame to reduce space occupancy. The same motor drives all movable guide plates to rise and fall, thereby simplifying the structure.

[0026] For example, see Figures 1 to 3 As shown, both ends of the rotating shaft 2 are rotatably connected to the frame through the first bearing seat 21, and both ends of the rotating shaft 2 protrude from the frame.

[0027] In this technical solution, the first bearing seat is a conventional structure and is fixed to the inner wall of the frame by bolts, etc. The two ends of the rotating shaft are rotatably connected to the frame through the corresponding first bearing seats and protrude from the frame for connection with the connecting rod structure.

[0028] For example, see Figures 1 to 4 As shown, the connecting rod mechanism 3 includes a first rocker arm 31 with one end sleeved on the rotating shaft 2 and a transmission seat 32 connected between the first rocker arm 31 and the movable guide plate 1. A hinge rod protrudes from the side surface of one end of the first rocker arm 31 away from the rotating shaft 2 and is rotatably connected to the transmission seat 32. The transmission seat 32 is hinged to the corresponding end of the corresponding movable guide plate 1.

[0029] In this technical solution, one end of the first rocker arm is sleeved on the end of the corresponding rotating shaft and is driven and connected by a key connection or the like. The end of the rotating shaft limits the axial position of the first rocker arm by a conventional end cover or the like to prevent it from falling off. The hinged rod is fixed to the first rocker arm by an interference fit or the like, or is integrally formed by casting or the like. The transmission seat is rotatably sleeved on the hinged rod through a bearing. During the rotation of the rotating shaft, the first rocker arm is driven to swing, and the movable guide plate is driven to rise and fall through the transmission seat.

[0030] For example, see Figures 5 to 7 As shown, the transmission device includes an eccentric device 5 drivingly connected to the motor 4 and a swing device 6 connected to the rotating shaft 2. The eccentric device 5 is drivingly connected to the swing device 6 through a connecting device 7. A synchronization rod 8 is connected between adjacent swing devices 6.

[0031] In this technical solution, the motor drives the eccentric device to rotate, and the eccentric device pushes the swing device, thereby driving the rotating shaft to rotate. Adjacent swing devices are linked by a synchronization rod, and all movable guide plates rise and fall synchronously.

[0032] For example, see Figures 5 to 7 As shown, the eccentric device 5 includes a driving shaft 52 whose two ends are rotatably arranged at the bottom of the frame through a second bearing seat 51, the driving shaft 52 is connected to the motor 4 through a synchronous belt drive, and the two ends of the driving shaft 52 are respectively sleeved with eccentric disks 53, and the connecting devices 7 are respectively sleeved on the corresponding eccentric disks 53.

[0033] In this technical solution, the motor drives the drive shaft to rotate through a conventional synchronous belt. The eccentric disk is sleeved on the drive shaft and circumferentially fixed to the drive shaft through key connections and the like. As the eccentric disk rotates with the drive shaft, the swing device is reciprocated by the connecting device to realize the lifting and lowering of the movable guide plate.

[0034] For example, see Figure 6 As shown, a groove is formed on the top surface of the second bearing seat 51, and the eccentric disc 53 is arranged in the corresponding groove.

[0035] In this technical solution, conventional bearings are embedded in the two side walls of the groove and limited by conventional end covers, the two ends of the drive shaft are rotatably arranged through corresponding second bearing seats, the eccentric disk is sleeved on the part of the drive shaft in the groove and limited circumferentially by conventional spacer rings.

[0036] For example, see Figure 5 As shown, the connecting device 7 is sleeved on the joint bearing 71 of the eccentric disk 53 and a connecting rod 72 with one end connected to the joint bearing 71 , and the other end of the connecting rod 72 is provided with a connecting sleeve 73 connected to the swing device 6 .

[0037] In this technical solution, the connecting rod is a conventional hexagonal column structure, with studs protruding from both ends, and connected to the corresponding joint bearings and connecting sleeves. The connecting sleeve is rotatably mounted on the swing shaft through the bearing. As the eccentric disk rotates, the connecting device drives the swing device back and forth.

[0038] For example, see Figures 5 to 7 As shown, the swing device 6 includes a first fork arm 61, a second fork arm 62 and a second swing rod 63 which are hinged in sequence. The end of the first fork arm 61 away from the second fork arm 62 is hinged to the bottom of the frame, and the end of the second swing rod 63 away from the second fork arm 62 is drive-connected to the corresponding rotating shaft 2. The first fork arm 61 and the second fork arm 62 are hinged through a swing shaft 64.

[0039] In this technical solution, two swing devices connected to the same rotating shaft utilize the same swing shaft, that is, a group of first fork arms and second fork arms are respectively provided at both ends of the swing shaft, so as to improve the synchronization of the lifting and lowering of the movable guide plates on both sides. The connecting sleeve of the connecting device is rotatably sleeved on the corresponding swing shaft through a bearing, and the angle between the first fork arm and the second fork arm is changed by pushing the swing shaft, thereby realizing the swing of the second swing arm. The second swing arm is sleeved on the rotating shaft and drives the rotating shaft to rotate by means of key connection or the like.

[0040] For example, see Figures 5 to 7 As shown, a swing sleeve is provided at the hinge of the first fork arm 61 and the second fork arm 62, the swing shaft rotates and penetrates the swing sleeve, and the two ends of the synchronization rod 8 are respectively connected to the corresponding swing sleeves.

[0041] In this technical solution, the swing sleeve is formed by splicing or integrally processing plates, and a nut is provided at one end close to the synchronization rod and connected to the synchronization rod to achieve synchronous lifting and lowering of all movable guide plates.

[0042] In summary, the utility model has a compact structure, the motor and the transmission device are arranged in the frame, which reduces the space occupied, and the same motor drives all the movable guide plates to rise and fall, thereby simplifying the structure.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0044] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A main transmission mechanism of a bag making machine, characterized in that: The invention comprises a frame, a plurality of movable guide plates arranged on both sides of the frame and a driving device drivingly connected to the movable guide plates, wherein the two ends of the movable guide plates are respectively arranged on the frame through a rotating shaft, and the two ends of the movable guide plates are respectively driven and connected to the corresponding rotating shaft through a connecting rod mechanism, and the driving device comprises a motor and a transmission device drivingly connected to the motor, and the rotating shaft is respectively connected to the motor through the transmission device.

2. The main transmission mechanism of a bag making machine according to claim 1, characterized in that: The two ends of the rotating shaft are rotatably connected to the frame through the first bearing seat, and the two ends of the rotating shaft protrude from the frame.

3. The main transmission mechanism of a bag making machine according to claim 2, characterized in that: The connecting rod mechanism includes a first rocker arm with one end sleeved on the rotating shaft and a transmission seat connected between the first rocker arm and the movable guide plate. A hinge rod protrudes from the side surface of one end of the first rocker arm away from the rotating shaft and is rotatably connected to the transmission seat. The transmission seat is hinged to the corresponding end of the movable guide plate.

4. The main transmission mechanism of a bag making machine according to claim 1, characterized in that: The transmission device comprises an eccentric device drivingly connected to the motor and a swing device connected to the rotating shaft. The eccentric device is drivingly connected to the swing device via a connecting device, and a synchronization rod is connected between adjacent swing devices.

5. The main transmission mechanism of the bag making machine according to claim 4, characterized in that: The eccentric device includes a driving shaft with two ends respectively rotatably arranged at the bottom of the frame through a second bearing seat, the driving shaft is connected to the motor through a synchronous belt drive, the two ends of the driving shaft are respectively sleeved with eccentric disks, and the connecting device is respectively sleeved on the corresponding eccentric disks.

6. The main transmission mechanism of the bag making machine according to claim 5, characterized in that: A groove is formed on the top surface of the second bearing seat, and the eccentric disk is arranged in the corresponding groove.

7. The main transmission mechanism of a bag making machine according to claim 5, characterized in that: The connecting device is sleeved on the joint bearing of the eccentric disk and a connecting rod with one end connected to the joint bearing, and the other end of the connecting rod is provided with a connecting sleeve connected to the swing device.

8. The main transmission mechanism of the bag making machine according to claim 4, characterized in that: The swing device includes a first fork arm, a second fork arm and a second swing arm which are hinged in sequence, wherein one end of the first fork arm facing away from the second fork arm is hinged to the bottom of the frame, and one end of the second swing arm facing away from the second fork arm is drivenly connected to the corresponding rotating shaft, and the first fork arm and the second fork arm are hinged via a swing shaft.

9. The main transmission mechanism of the bag making machine according to claim 8, characterized in that: A swing sleeve is provided at the hinge of the first fork arm and the second fork arm, the swing shaft rotates and penetrates the swing sleeve, and two ends of the synchronization rod are respectively connected to the corresponding swing sleeves.

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