CN219904913U - Cam swing mechanism of food packaging machine - Google Patents

Abstract

The utility model relates to the technical field of packaging mechanical equipment and discloses a cam swing mechanism of a food packaging machine, which comprises an input shaft, wherein the input shaft is rotatably arranged on a seat plate, a cam I and a cam II are fixedly arranged on the input shaft, the input shaft is arranged close to cam lobes of the cam I and the cam II, the seat plate is pivotally arranged and provided with an upper swing arm and a lower swing arm, the upper swing arm is arranged above the cam I and provided with a pushed part I contacted with the cam I, and the lower swing arm is arranged below the cam II and provided with a pushed part II contacted with the cam II; the front end of the upper swing arm is hinged with a pull rod I, the front end of the lower swing arm is hinged with a pull rod II, the pull rod I and the pull rod II can relatively stretch and retract, the front part of the upper swing arm is hinged with a pull rod III, the lower end of the pull rod III is hinged with a swing arm, and the swing arm is fixedly connected with an output shaft; the continuous rotary motion of the input shaft can be converted into the reciprocating rotation of the output shaft within a specific angle range, and the device is suitable for driving the package bag clamping frame to transfer the package bags.

Description

Cam swing mechanism of food packaging machine

Technical Field

The utility model belongs to the technical field of packaging mechanical equipment, and particularly relates to a cam swing mechanism of a food packaging machine.

Background

The packed food packaging machine is different from a canned food packaging machine, and the canned food packaging machine can directly transfer the packaging cans through a conventional common belt conveyor line and sequentially fill the packaging cans with food; the packaging bags of the bag-packed food packaging machine are generally stored in a lying and stacking mode, the packaging bags are grabbed by a packaging bag feeding mechanical arm to erect the packaging bags in a lying and folding state, then the packaging bags are transferred, the undeployed packaging bags are difficult to directly erect and transfer through a conventional common belt conveyor line after being erected, the packaging bags can only be transferred in a clamping mode, for example, the packaging bags are clamped and taken by a packaging bag clamping frame to forward transfer a station, then the packaging bag clamping frame is reset, and the clamping action is repeated circularly, so that batch continuous transfer of the erect packaging bags can be realized; therefore, it is necessary to develop a swing drive mechanism to achieve this action of the bag gripping rack.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the cam swing mechanism of the food packaging machine, which can convert continuous rotary motion of an input shaft into reciprocating rotation of an output shaft within a specific angle range and can realize the transfer operation of a packaging bag clamping frame to packaging bags.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the cam swing mechanism of the food packaging machine comprises an input shaft, wherein the input shaft is rotatably arranged on a seat plate, a cam I and a cam II are fixedly arranged on the input shaft, the input shaft is arranged close to cam lobes of the cam I and the cam II, an upper swing arm and a lower swing arm are pivotally arranged on the seat plate, the upper swing arm is arranged above the cam I and is provided with a pushed part I contacted with the cam I, and the lower swing arm is arranged below the cam II and is provided with a pushed part II contacted with the cam II; the front end of the upper swing arm is hinged with a pull rod I, the front end of the lower swing arm is hinged with a pull rod II, the pull rod I and the pull rod II can relatively stretch and retract, the front part of the upper swing arm is hinged with a pull rod III, the lower end of the pull rod III is hinged with a swing arm, and the swing arm is fixedly connected with an output shaft.

The utility model has the following beneficial effects:

the cam swinging mechanism can convert continuous rotary motion of the input shaft into reciprocating rotation of the output shaft within a specific angle range, is suitable for driving the packaging bag clamping frame to transfer packaging bags, and can drive the packaging bag clamping frame to clamp packaging foods to move forward for one station by the reciprocating rotation of the output shaft, and can reset the circulating clamping in real time.

Drawings

FIG. 1 is a perspective view of a cam swing mechanism of a food packaging machine of the present utility model;

FIG. 2 is a perspective view of the cam swing mechanism of the food packaging machine of the present utility model;

FIG. 3 is a diagram showing the cam and swing arm engagement structure of the cam swing mechanism of the food packaging machine of the present utility model;

FIG. 4 is a schematic view of the cam swing mechanism of the food packaging machine of the present utility model in use;

FIG. 5 is a cross-sectional view taken along A-A in FIG. 4;

fig. 6 is a schematic view showing the installation of the cam swing mechanism of the food packaging machine of the present utility model on the other side of the machine body.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific embodiments so as to more clearly understand the technical ideas claimed in the present utility model.

The cam swing mechanism of the food packaging machine shown in fig. 1-5 comprises an input shaft 1, wherein the input shaft 1 is rotatably mounted on a seat plate 2, a cam I3 and a cam II 4 are fixedly mounted on the input shaft 1, and the input shaft 1 is arranged close to a cam lobe 5 of the cam I3 and the cam II 4. The rear end of the seat board 2 is pivotally provided with a rotating shaft I6 and a rotating shaft II 7 through bearings, the rotating shaft I6 is fixedly provided with an upper swing arm 8, the upper swing arm 8 is arranged above the cam I3 and is provided with a pushed part I9 used for being contacted with the cam I3, the rotating shaft II 7 is fixedly provided with a lower swing arm 10, and the lower swing arm 10 is arranged below the cam II 4 and is provided with a pushed part II 11 used for being contacted with the cam II 4.

The push-receiving parts I9 and II 11 are respectively wheel bodies 23, the upper swing arm 8 and the lower swing arm 10 are respectively provided with wheel grooves 24, the wheel bodies 23 are arranged on the wheel grooves 24 through wheel shafts, and the wheel grooves 24 can guide the rotation of the cams I3 and II 4 while the cams I3 and II 4 are respectively contacted with the wheel bodies 23 of the upper swing arm 8 and the lower swing arm 10 to push the wheel bodies 23 in a contact manner, so that the cams I3 and II 4 are smoothly contacted with the push-push wheel bodies 23 along the wheel grooves 24.

The front end of the upper swing arm 8 is hinged with a pull rod I12, the front end of the lower swing arm 10 is hinged with a pull rod II 13, the pull rod I12 is fixedly provided with a sleeve 14, the pull rod II 13 is fixedly provided with a spring rod 15, the free end of the spring rod 15 is provided with a limiting table 16, a spring 17 is sleeved on the spring rod 15 and extends into the sleeve 14, a spiral cover 18 is sleeved on the spring rod 15, the spiral cover 18 is in threaded connection with the sleeve 14, the spring 17 is limited between the limiting table 16 and the spiral cover 18, the pull rod I12 and the pull rod II 13 can relatively stretch and retract, and the arrangement can realize relative movement capability between the upper swing arm 8 and the lower swing arm 10 when the cam I3 and the cam II 4 are operated to push the upper swing arm 8 and the lower swing arm 10. Of course, other conventional telescopic movable connection structures can be adopted between the pull rod I12 and the pull rod II 13, which are not illustrated herein.

The front part of the upper swing arm 8 is also hinged with a pull rod III 19, the lower end of the pull rod III 19 is hinged with a swing arm 20, and the swing arm 20 is fixedly connected with an output shaft 21. The swing arm 20 may be provided with a long circular groove 22, and the lower end of the pull rod iii 19 is hinged to the long circular groove 22 through a hinge structure member, so that the hinge structure member can be loosened to adjust the hinge position of the lower end of the pull rod iii 19 along the long circular groove 22, and further adjust the swing amplitude of the pull rod iii 19 for pushing and pulling the swing arm 20; the hinge structure belongs to the prior conventional technology, and the specific structural form is not limited and will not be described herein.

As shown in fig. 3, when the cam lobe 5 of the cam ii 4 contacts the pushed portion ii 11 of the lower swing arm 10 downward while the cam surface of the cam i 3 opposite to the cam lobe 5 contacts the pushed portion i 9 of the upper swing arm 8, the tie rod iii 19 pulls the swing arm 20 to swing upward to a limit angle; conversely, when the cam I3 and the cam II 4 are driven to rotate by the input shaft 1, the cam lobe 5 on the cam I3 contacts with the pushed part I9 of the upper swing arm 8, and the wheel surface opposite to the cam lobe 5 on the cam II 4 contacts with the pushed part II 11 of the lower swing arm 10, and at the moment, the pull rod III 19 pushes the swing arm 20 to swing downwards to the limit angle indicated by the broken line in FIG. 4; the input shaft 1 drives the cams I3 and II 4 to rotate so that the swing arm 20 swings in the above angle range, and then drives the output shaft 21 to reciprocally rotate in the corresponding angle range.

When the packaging bag clamping and taking device is installed and used, as shown in fig. 4-6, two cam swinging mechanisms are fixedly installed on a packaging machine body 25 through a seat plate 2, the two cam swinging mechanisms share one input shaft 1, the input shaft 1 is in transmission connection with a motor driving device, the motor driving device drives the two cam swinging mechanisms to rotate, output shafts 21 of the two cam swinging mechanisms respectively penetrate through the packaging machine body 25 and are supported and installed on the packaging machine body 25 through bearing seats 26, a plate frame 27 is fixedly installed on the output shafts 21, a packaging bag clamping and taking frame can be installed on the plate frame 27, two ends of the packaging bag clamping and taking frame are respectively hinged to the top ends of the plate frames 27 on the output shafts 21 of the two cam swinging mechanisms, and the reciprocating rotation of the output shafts 21 can drive the packaging bag clamping and taking frame to clamp packaged foods to move forwards to convey a station and can reset the circulating clamping and taking immediately; the cam swing mechanism can convert the continuous rotary motion of the input shaft 1 into the reciprocating rotation of the output shaft 21 within a specific angle range.

Various other corresponding changes and modifications will occur to those skilled in the art from the foregoing description and the accompanying drawings, and all such changes and modifications are intended to be included within the scope of the present utility model as defined in the appended claims.

Claims (4)

1. The cam swing mechanism of the food packaging machine is characterized by comprising an input shaft, wherein the input shaft is rotatably arranged on a seat plate, a cam I and a cam II are fixedly arranged on the input shaft, the input shaft is close to cam lobes of the cam I and the cam II, the seat plate is pivotally arranged to form an upper swing arm and a lower swing arm, the upper swing arm is arranged above the cam I and provided with a pushed part I contacted with the cam I, and the lower swing arm is arranged below the cam II and provided with a pushed part II contacted with the cam II;

the upper swing arm front end articulates and sets up pull rod I, lower swing arm front end articulates and sets up pull rod II, pull rod I with can be flexible activity relatively between the pull rod II, the articulated pull rod III that sets up in upper swing arm front portion, pull rod III lower extreme articulates in the swing arm, swing arm fixed connection is in the output shaft.

2. The cam swing mechanism of claim 1 wherein the push receiving parts i and ii are wheels, the upper swing arm and the lower swing arm are respectively provided with a wheel groove, and the wheels are mounted in the wheel grooves through wheel shafts.

3. The cam swing mechanism of claim 1 wherein said swing arm is provided with an oblong slot and a hinge structure hinges the lower end of said pull rod iii to said oblong slot.

4. The cam swing mechanism of a food packaging machine according to claim 1, wherein the pull rod i is fixedly provided with a sleeve, the pull rod ii is fixedly provided with a spring rod, the free end of the spring rod is provided with a limiting table, a spring is sleeved on the spring rod and extends into the sleeve, a spiral cover is sleeved on the spring rod, and the spiral cover is in threaded connection with the sleeve, so that the spring is limited between the limiting table and the spiral cover.