阅读说明：本技术 一种用于辅助鸡肉保鲜包装用的塑料袋撑开机 (Plastic bag opening machine for assisting chicken fresh-keeping packaging ) 是由 谢华华 于 2021-07-01 设计创作，主要内容包括：本发明涉及鸡肉保鲜包装领域,尤其涉及一种用于辅助鸡肉保鲜包装用的塑料袋撑开机,包括有开槽导向架、塑料卷带放置导向组件、驱动组件、塑料袋吸附撑开组件等；开槽导向架上设有塑料卷带放置导向组件,开槽导向架上设有驱动组件,驱动组件上设有塑料袋吸附撑开组件。通过L型连接杆及其上装置的配合,L型连接杆及其上装置会朝相互远离的方向运动,使得两硅胶套之间的距离增大,从而使得塑料袋被撑开的角度增大,然后通过其它出料设备将鸡肉投入被撑开的塑料袋内,再通过其它封口设备将装有鸡肉的塑料袋封口,达到了能够自动地将塑料袋撑开以便于将鸡肉投入塑料袋中的效果。(The invention relates to the field of chicken freshness-keeping packaging, in particular to a plastic bag opening machine for assisting chicken freshness-keeping packaging, which comprises a slotting guide frame, a plastic tape placing guide assembly, a driving assembly, a plastic bag adsorption opening assembly and the like; the slotting guide frame is provided with a plastic tape placing guide assembly, the slotting guide frame is provided with a driving assembly, and the driving assembly is provided with a plastic bag absorbing and opening assembly. Through the cooperation of L type connecting rod and device on it, L type connecting rod and device on it can move towards the direction of keeping away from each other for distance increase between two silica gel covers, thereby make the plastic bag by the angle increase of strutting, then drop into the plastic bag of being propped open with chicken through other discharging equipment in, the plastic bag that the chicken will be equipped with through other sealing equipment seals, reached and to strut the plastic bag automatically so that drop into the effect in the plastic bag with chicken.)

1. A plastic bag props machine for assisting chicken freshness retaining packaging usefulness, characterized by: including the fluting leading truck, the direction subassembly is placed to the plastics winding, drive assembly, the plastic bag adsorbs the subassembly that struts, the plastic bag cuts off the subassembly, reset assembly, spacing subassembly and direction promote the subassembly, it places the direction subassembly to be equipped with the plastics winding on the fluting leading truck, be equipped with drive assembly on the fluting leading truck, it adsorbs the subassembly that struts to be equipped with the plastic bag on the drive assembly, it cuts off the subassembly to be equipped with the plastic bag on the fluting leading truck, the plastic bag cuts off and is equipped with reset assembly on the subassembly, the plastic bag cuts off and is equipped with spacing subassembly on the subassembly, the plastic bag cuts off and is equipped with the direction on the subassembly and promotes the subassembly.

2. The plastic bag opening machine for assisting chicken fresh-keeping packaging according to claim 1, which is characterized in that: the plastic winding placement guide assembly comprises a placement roller and a guide roller, the placement roller is arranged on the slotting guide frame, and the guide roller is connected to the slotting guide frame.

3. The plastic bag opening machine for assisting chicken fresh-keeping packaging according to claim 2, which is characterized in that: the driving assembly comprises an electric push rod, an L-shaped connecting rod and a guide rod, the electric push rod is arranged on the slotted guide frame, one end of the electric push rod is connected with the L-shaped connecting rod, and the guide rod is connected to the L-shaped connecting rod.

4. The plastic bag opening machine for assisting chicken fresh-keeping packaging according to claim 3, which is characterized in that: the plastic bag adsorption opening component comprises a movable plate, a reset spring, an opening fixing disk, a silica gel sleeve, a movable ventilation sleeve, a compression spring, a clamping plate, a first stretching spring and a lower pressing rod, wherein the guide rod is connected with a pair of movable plates in a sliding mode, the movable plates are matched with the slotting guide frame in a sliding mode, the slotting guide frame plays a guiding role on the movable plates, the reset spring is connected between the movable plates and the guide rod, the opening fixing disk is connected onto the movable plates in a connecting mode, the bottom of the opening fixing disk is connected with the silica gel sleeve, the movable ventilation sleeve is connected onto the opening fixing disk in a sliding mode, the pair of compression springs is connected between the movable ventilation sleeve and the opening fixing disk, the clamping plate is connected onto the opening fixing disk in a sliding mode, the first stretching spring is connected between the clamping plate and the opening fixing disk, and the pair of lower pressing rods is arranged on the plastic bag cutting component.

5. The plastic bag opening machine for assisting chicken fresh-keeping packaging according to claim 4, which is characterized in that: the plastic bag cutting assembly comprises a first placing plate, a second placing plate, a cutter plate, an opening plate and a second stretching spring, wherein the first placing plate is arranged on the grooving guide frame, the second placing plate is arranged on the first placing plate, the second placing plate is provided with a pair of lower pressing rods, the second placing plate is connected with a pair of cutter plates in a sliding mode, the cutter plate is connected with the opening plate, and the second stretching spring is connected between the two cutter plates.

6. The plastic bag opening machine for assisting chicken fresh-keeping packaging according to claim 5, which is characterized in that: reset assembly is including L type backup pad, the rotary disk, the recess dish, torsion spring and pulling direction frame, the second is placed board one side hookup and is had L type backup pad, the last rotation type of L type backup pad is connected with the rotary disk, the hookup has the recess dish on the rotary disk, recess dish and two board contacts that strut, be connected with torsion spring between recess dish and the rotary disk, the second is placed the board and is gone up the sliding type and be connected with the pulling direction frame, be provided with two round holes on the pulling direction frame, the spacing cooperation of pulling direction frame and rotary disk.

7. The plastic bag opening machine for assisting chicken fresh-keeping packaging according to claim 6, which is characterized in that: the limiting assembly comprises a movable rod, a limiting spring and a limiting rod, the second placing plate is slidably connected with the movable rod, the movable rod and the second placing plate are connected with the three limiting springs, the limiting rod is connected with the movable rod in a connected mode, and the limiting rod is clamped into the pulling guide frame.

8. The plastic bag opening machine for assisting chicken fresh-keeping packaging according to claim 7, which is characterized in that: the direction promotes the subassembly including fluting deflector, wedge guide block, playback spring and catch bar, and the second is placed and is linked up on the board and has been had a pair of fluting deflector, and the gliding formula is connected with the wedge guide block on the fluting deflector, is connected with the playback spring between wedge guide block and the fluting deflector, and the linking has the catch bar on the chucking board, catch bar and fluting deflector slidingtype cooperation, and the fluting deflector plays the guide effect to the catch bar.

Technical Field

The invention relates to the field of chicken freshness protection packaging, in particular to a plastic bag opening machine for assisting chicken freshness protection packaging.

Background

The chicken contains vitamin C, vitamin E and the like, has high protein content, various types and high digestibility, is easily absorbed and utilized by human bodies, has the effects of enhancing physical strength and strengthening the bodies, contains phospholipids which have important effects on the growth and development of the human bodies, and is one of important sources of fat and phospholipids in the dietary structure of Chinese people. The chicken has good food therapy effect on malnutrition, intolerance of cold, weakness, anemia and the like, so the chicken is deeply loved by people.

Most of chicken production is mass production, the chicken needs to be preserved and packaged before the produced chicken is put on the market, in the prior art, plastic bags are manually opened one by one and then are subjected to subsequent packaging, the method consumes a large amount of time and manpower, the working efficiency is low, and a plurality of plastic bags are manually divided into single plastic bags for packaging, so that the production efficiency is low.

Disclosure of Invention

Therefore, in order to solve the above problems, it is necessary to provide a plastic bag opening machine for assisting chicken freshness protection package, which can automatically open a plastic bag for packaging, and can automatically open the plastic bag for throwing chicken into the plastic bag, so as to solve the problems that a plurality of plastic bags cannot be automatically separated and the plastic bag cannot be opened in the background art.

The utility model provides a plastic bag props machine for assisting fresh-keeping packing of chicken usefulness, including the fluting leading truck, the direction subassembly is placed to the plastics winding, drive assembly, the plastic bag adsorbs the subassembly that struts, the plastic bag cuts off the subassembly, reset assembly, spacing subassembly and direction promotion subassembly, it places the direction subassembly to be equipped with the plastics winding on the fluting leading truck, be equipped with drive assembly on the fluting leading truck, the last plastic bag that is equipped with of drive assembly adsorbs the subassembly that struts, it cuts off the subassembly to be equipped with the plastic bag on the fluting leading truck, the plastic bag cuts off and is equipped with reset assembly on the subassembly, the plastic bag cuts off and is equipped with spacing subassembly on the subassembly, the plastic bag cuts off and is equipped with direction promotion subassembly on the subassembly.

More preferably, the plastic winding placement guide assembly comprises a placement roller and a guide roller, the placement roller is arranged on the slotting guide frame, and the guide roller is connected to the slotting guide frame.

More preferably, the driving assembly comprises an electric push rod, an L-shaped connecting rod and a guide rod, the electric push rod is installed on the slotted guide frame, one end of the electric push rod is connected with the L-shaped connecting rod, and the guide rod is connected to the L-shaped connecting rod.

More preferably, the plastic bag adsorption and spreading assembly comprises a movable plate, a reset spring, an opening fixed disk, a silica gel sleeve, a movable ventilating sleeve, a compression spring, a clamping plate, a first extension spring and a lower pressing rod, wherein the guide rod is connected with the pair of movable plates in a sliding manner, the movable plate is matched with the slotting guide frame in a sliding manner, the slotting guide frame guides the movable plate, the reset spring is connected between the movable plate and the guide rod, the opening fixed disk is connected onto the movable plate in a connecting manner, the silica gel sleeve is connected to the bottom of the opening fixed disk, the movable ventilating sleeve is connected onto the opening fixed disk in a sliding manner, the pair of compression springs is connected between the movable ventilating sleeve and the opening fixed disk, the clamping plate is connected onto the opening fixed disk in a sliding manner, the first extension spring is connected between the clamping plate and the opening fixed disk, and the pair of lower pressing rods is arranged on the plastic bag cutting assembly.

More preferably, the plastic bag cutting assembly comprises a first placing plate, a second placing plate, a cutter plate, an opening plate and a second stretching spring, the first placing plate is arranged on the grooving guide frame, the second placing plate is arranged on the first placing plate, the second placing plate is provided with a pair of lower pressing rods, the second placing plate is slidably connected with a pair of cutter plates, the cutter plate is connected with the opening plate in a linked mode, and the second stretching spring is connected between the two cutter plates.

More preferably, the subassembly that resets is including L type backup pad, the rotary disk, the recess dish, torsion spring and pulling guide frame, the second place board one side hookup have L type backup pad, the last rotation type of L type backup pad is connected with the rotary disk, the hookup has the recess dish on the rotary disk, recess dish and two board contacts that strut, be connected with torsion spring between recess dish and the rotary disk, the second place board upper sliding type is connected with the pulling guide frame, be provided with two round holes on the pulling guide frame, pulling guide frame and the spacing cooperation of rotary disk.

More preferably, the limiting assembly comprises a movable rod, a limiting spring and a limiting rod, the second placing plate is connected with the movable rod in a sliding mode, the movable rod and the second placing plate are connected with the three limiting springs, the limiting rod is connected to the movable rod in a connecting mode, and the limiting rod is clamped into the pulling guide frame.

More preferably, the direction promotes the subassembly including fluting deflector, wedge guide block, homing spring and catch bar, and the second is placed the board and is gone up the hookup and has been had a pair of fluting deflector, and the slidingly wedge guide block that is connected with on the fluting deflector, is connected with the homing spring between wedge guide block and the fluting deflector, and the hookup has the catch bar on the chucking board, catch bar and fluting deflector slidingly cooperate, and the fluting deflector plays the guide effect to the catch bar.

Compared with the prior art, the invention has the following advantages:

through the cooperation of the pulling guide frame and the device thereon, the pulling guide frame can pull the rotating disk and the device thereon to rotate reversely by 90 degrees, so that the groove disk is not propped against the two opening plates any more, and the second extension spring in the extension state can reset along with the rotating disk, so that the two opening plates and the device thereon move towards the directions close to each other, and further the cutting knife plate can cut the plastic bag thereon, the subsequent packaging is convenient, and the effect of automatically cutting the plastic bag is achieved.

Through the cooperation of L type connecting rod and device on it, L type connecting rod and device on it can move towards the direction of keeping away from each other for distance increase between two silica gel covers, thereby make the plastic bag by the angle increase of strutting, then drop into the plastic bag of being propped open with chicken through other discharging equipment in, the plastic bag that the chicken will be equipped with through other sealing equipment seals, reached and to strut the plastic bag automatically so that drop into the effect in the plastic bag with chicken.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a third perspective view of the present invention.

Fig. 4 is a schematic perspective view of the plastic tape placement guide assembly of the present invention.

Fig. 5 is a schematic perspective view of the driving assembly of the present invention.

Fig. 6 is a partial perspective view of the plastic bag adsorbing and expanding assembly of the present invention.

Fig. 7 is a partially disassembled perspective view of the plastic bag adsorbing and expanding assembly of the present invention.

Fig. 8 is a schematic partial perspective view of the plastic bag cutting assembly according to the present invention.

Fig. 9 is a partial perspective view of the present invention.

Fig. 10 is a schematic perspective view of the reduction assembly and the limiting assembly of the present invention.

Fig. 11 is a schematic perspective view of the spacing assembly of the present invention.

Fig. 12 is an enlarged perspective view of the present invention a.

Fig. 13 is a schematic perspective view of a portion of the guiding pushing assembly of the present invention.

Wherein the figures include the following reference numerals: 1. a slotted guide frame, 2, a plastic tape placing guide assembly, 21, a placing roller, 22, a guide roller, 3, a driving assembly, 31, an electric push rod, 32, an L-shaped connecting rod, 33, a guide rod, 4, a plastic bag adsorbing and expanding assembly, 41, a movable plate, 42, a return spring, 43, an opening fixed plate, 44, a silica gel sleeve, 45, a movable ventilation sleeve, 46, a compression spring, 47, a clamping plate, 48, a first stretching spring, 49, a pressing rod, 5, a plastic bag cutting assembly, 51, a first placing plate, 52, a second placing plate, 53, a cutter plate, 54, an expanding plate, 55, a second stretching spring, 6, a return assembly, 61, an L-shaped supporting plate, 62, a rotating plate, 63, a groove plate, 64, a torsion spring, 65, a pulling guide frame, 7, a limiting assembly, 71, a movable rod, 72, a limiting spring, 73, a limiting rod, 8, a guiding and pushing assembly, 81. a slotted guide plate 82, a wedge-shaped guide block 83, a return spring 84 and a push rod.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Example (b): a plastic bag opening machine for assisting chicken fresh-keeping packaging, which comprises a slotted guide frame 1, a plastic tape placing guide component 2, a driving component 3 and a plastic bag adsorption opening component 4 as shown in figures 1-13, the plastic bag cuts off subassembly 5, reset assembly 6, spacing subassembly 7 and direction promotion subassembly 8, it places guide assembly 2 to be equipped with the plastics winding on the fluting leading truck 1, be equipped with drive assembly 3 on the fluting leading truck 1, it adsorbs subassembly 4 to strut to be equipped with the plastic bag on the drive assembly 3, the plastic bag adsorbs subassembly 4 that struts to be used for adsorbing the plastic bag and struts, it cuts off subassembly 5 to be equipped with the plastic bag on the fluting leading truck 1, it is used for the plastic bag segmentation to cut off subassembly 5, the plastic bag cuts off and is equipped with reset assembly 6 on the subassembly 5, the plastic bag cuts off and is equipped with spacing subassembly 7 on the subassembly 5, the plastic bag cuts off and is equipped with direction promotion subassembly 8 on the subassembly 5.

The plastic tape winding placing guide assembly 2 comprises a placing roller 21 and a guide roller 22, the placing roller 21 is arranged on the slotting guide frame 1, the placing roller 21 is used for placing a plastic bag winding, and the guide roller 22 is connected to the slotting guide frame 1.

The driving assembly 3 comprises an electric push rod 31, an L-shaped connecting rod 32 and a guide rod 33, the electric push rod 31 is installed on the slotted guide frame 1, the electric push rod 31 is used for driving the L-shaped connecting rod 32 and an upper device thereof to reciprocate along a sliding groove in the slotted guide frame 1, one end of the electric push rod 31 is connected with the L-shaped connecting rod 32, and the L-shaped connecting rod 32 is connected with the guide rod 33.

The plastic bag adsorbing and expanding assembly 4 comprises a movable plate 41, a return spring 42, an opening fixed plate 43, a silica gel sleeve 44, a movable ventilating sleeve 45, a compression spring 46, a clamping plate 47, a first extension spring 48 and a lower pressing rod 49, wherein the guide rod 33 is connected with the pair of movable plates 41 in a sliding manner, the movable plate 41 is used for pushing and pulling the guide frame 65 to move upwards, the movable plate 41 is matched with the slotted guide frame 1 in a sliding manner, the slotted guide frame 1 plays a role in guiding the movable plate 41, the return spring 42 is connected between the movable plate 41 and the guide rod 33, the return spring 42 is used for driving the movable plate 41 and the upper device to reset, the opening fixed plate 43 is connected to the movable plate 41 in a connecting manner, the bottom of the opening fixed plate 43 is connected with the silica gel sleeve 44, the silica gel sleeve 44 is used for adsorbing the plastic bags, the movable ventilating sleeve 45 is connected to the opening fixed plate 43 in a sliding manner, and the pair of compression springs 46 is connected between the movable ventilating sleeve 45 and the opening fixed plate 43, compression spring 46 is used for driving activity cover 45 that ventilates to reset, and opening fixed disk 43 upper sliding type is connected with chucking plate 47, and chucking plate 47 is used for blocking activity cover 45 that ventilates, is connected with first extension spring 48 between chucking plate 47 and the opening fixed disk 43, and first extension spring 48 is used for driving chucking plate 47 and resets, is equipped with a pair of depression bar 49 down on the plastic bag cutting off assembly 5, and depression bar 49 is used for extrudeing activity cover 45 that ventilates and moves down.

The plastic bag cutting assembly 5 comprises a first placing plate 51, a second placing plate 52, a cutter plate 53, an opening plate 54 and a second stretching spring 55, wherein the first placing plate 51 is arranged on the slotting guide frame 1, the second placing plate 52 is arranged on the first placing plate 51, the second placing plate 52 is provided with a pair of lower compression rods 49, the second placing plate 52 is connected with a pair of cutter plates 53 in a sliding mode, the cutter plate 53 is used for cutting the plastic bag, the cutter plate 53 is connected with the opening plate 54 in a connecting mode, the second stretching spring 55 is connected between the two cutter plates 53, and the second stretching spring 55 is used for enabling the two opening plates 54 and the upper device thereof to move towards the directions close to each other.

The reset assembly 6 comprises an L-shaped supporting plate 61, a rotating disc 62, a groove disc 63, a torsion spring 64 and a pulling guide frame 65, wherein the L-shaped supporting plate 61 is connected to one side of the second placing plate 52, the rotating disc 62 is connected to the L-shaped supporting plate 61 in a rotating mode, the groove disc 63 is connected to the rotating disc 62 in a rotating mode, the groove disc 63 is used for pushing the opening plate 54 and the upper device to move towards the direction away from each other, the groove disc 63 is in contact with the two opening plates 54, the torsion spring 64 is connected between the groove disc 63 and the rotating disc 62, the torsion spring 64 is used for driving the groove disc 63 and the upper device to reset, the pulling guide frame 65 is connected to the second placing plate 52 in a sliding mode, the pulling guide frame 65 is used for pulling the rotating disc 62 and the upper device to rotate by 90 degrees, two circular holes are formed in the pulling guide frame 65, and the pulling guide frame 65 is in spacing fit with the rotating disc 62.

The limiting assembly 7 comprises a movable rod 71, a limiting spring 72 and a limiting rod 73, the second placing plate 52 is connected with the movable rod 71 in a sliding mode, the movable rod 71 and the second placing plate 52 are connected with the three limiting springs 72, and through the matching of the movable rod 71 and the limiting spring 72, the limiting rod 73 is clamped on a round hole, located below, on the pulling guide frame 65, the limiting rod 73 is connected onto the movable rod 71 in a linkage mode, the limiting rod 73 is used for preventing the pulling guide frame 65 from resetting downwards, and the limiting rod 73 is clamped into the pulling guide frame 65.

The guiding and pushing assembly 8 comprises a slotted guide plate 81, a wedge-shaped guide block 82, a homing spring 83 and a push rod 84, a pair of slotted guide plates 81 is connected to the second placing plate 52 in a coupling mode, under the action of the slotted guide plate 81, the push rod 84 moves towards the direction far away from the slotted guide frame 1 along another sliding groove on the slotted guide plate 81, the wedge-shaped guide block 82 is connected to the slotted guide plate 81 in a sliding mode, the homing spring 83 is connected between the wedge-shaped guide block 82 and the slotted guide plate 81, the homing spring 83 is used for driving the wedge-shaped guide block 82 to reset, the push rod 84 is connected to the clamping plate 47 in a coupling mode, the push rod 84 is used for pushing the wedge-shaped guide block 82 to move downwards, the push rod 84 is in sliding fit with the slotted guide plate 81, and the slotted guide plate 81 plays a guiding role on the push rod 84.

Firstly, a roll of plastic bag is manually placed on the placing roller 21, one end of the plastic bag is manually pulled out and penetrates between two cutter plates 53, a collecting frame is placed below a silica gel sleeve 44 which is positioned below the collecting frame in advance, the electric push rod 31 is manually controlled to contract, so that the L-shaped connecting rod 32 and the upper device thereof move towards the direction close to the placing roller 21 along a sliding chute on the slotted guide frame 1, the movable vent sleeve 45 is contacted with the lower pressing rod 49 in the process, the lower pressing rod 49 extrudes the movable vent sleeve 45 to move downwards, the compression spring 46 is compressed along with the movable vent sleeve 45, the opening on the opening fixing disc 43 is blocked by the movable vent sleeve 45, the movable vent sleeve 45 pushes the clamping plate 47 and the upper device thereof to move towards the direction far away from the slotted guide frame 1, the first stretching spring 48 is stretched, then the movable vent sleeve 45 is contacted with the other side of the clamping plate 47, the clamping plate 47 and the upper device thereof are reset under the reset action of the first stretching spring 48, the clamping plate 47 is used for clamping the movable ventilation sleeve 45, the movable ventilation sleeve 45 is prevented from resetting, then the movable ventilation sleeve 45 can be separated from the lower pressing rod 49, the movable plate 41 and the upper device thereof can move towards the mutually approaching direction under the guiding action of the slotting guide frame 1, the reset spring 42 can be stretched accordingly, when the silica gel sleeve 44 is in contact with the plastic bag between the cutter plates 53, the air in the silica gel sleeve 44 is exhausted, the silica gel sleeve 44 is in a sealing state, the pressure inside the silica gel sleeve 44 is smaller than the external pressure, and the plastic bag between the cutter plates 53 is adsorbed by the silica gel sleeve 44 through the matching of the two silica gel sleeves 44.

Then the electric push rod 31 is manually controlled to extend, so that the L-shaped connecting rod 32 and the device thereon move along the sliding groove on the slotting guide frame 1 in the direction away from the placing roller 21, under the guiding action of the slotting guide frame 1, the L-shaped connecting rod 32 and the device thereon move in the direction away from each other, the return spring 42 is reset accordingly, so that the silicone sleeve 44 pulls the upper and lower sides of the plastic bag between the cutter plates 53 apart, in the process, the movable plate 41 pushes the pulling guide frame 65 to move upwards, the pulling guide frame 65 pulls the rotating disk 62 and the device thereon to reverse 90 degrees, the torsion spring 64 is compressed accordingly, so that the groove disk 63 is no longer propped against the two opening plates 54, the second stretching spring 55 in the stretching state is reset accordingly, so that the two opening plates 54 and the device thereon move in the direction close to each other, and the cutter plate 53 cuts the plastic bag thereon, subsequent packing of being convenient for has reached the effect that can cut apart the plastic bag automatically, when pulling guide frame 65 upward movement, through the cooperation of movable rod 71 with spacing spring 72 for gag lever post 73 card prevents that pulling guide frame 65 from reseing downwards on the round hole that is located the below on pulling guide frame 65.

Then, under the guiding action of the slotting guide frame 1, the L-shaped connecting rod 32 and the device on the L-shaped connecting rod continue to move towards the directions away from each other, the reset spring 42 is compressed accordingly, the distance between the two silica gel sleeves 44 is increased, the angle of the plastic bag which is propped open is increased, then chicken is thrown into the propped plastic bag through other discharging equipment, the plastic bag which is filled with the chicken is sealed through other sealing equipment, and the effect that the plastic bag can be propped open automatically so that the chicken can be thrown into the plastic bag is achieved.

During the process that the L-shaped connecting rod 32 and the device thereon move along the sliding grooves of the slotted guide frame 1 in the direction away from the placing roller 21, the pushing rod 84 moves along one of the sliding grooves of the slotted guide plate 81, the pushing rod 84 pushes the wedge-shaped guide block 82 to move downwards, the return spring 83 is compressed, then the pushing rod 84 moves to the other sliding groove of the slotted guide plate 81, and the wedge-shaped guide block 82 is returned under the returning action of the return spring 83.

Then, the electric push rod 31 is manually controlled to contract to enable the L-shaped connecting rod 32 and the device on the L-shaped connecting rod to reset, in the process, under the action of the slotted guide plate 81, the push rod 84 moves towards the direction far away from the slotted guide frame 1 along the other sliding groove on the slotted guide plate 81, the first stretching spring 48 can be stretched accordingly, the clamping plate 47 is enabled not to clamp the movable ventilating sleeve 45 any more, the movable ventilating sleeve 45 can reset under the resetting action of the compression spring 46, the silica gel sleeve 44 is enabled not to be in a sealing state any more, the silica gel sleeve 44 is not adsorbed on the plastic bag packaged with chicken, the silica gel sleeve 44 can be separated from the plastic bag packaged with chicken, and then the plastic bag packaged with chicken can fall into the collecting frame placed below the silica gel sleeve 44 under the action of gravity.

Then the pushing rod 84 pushes the movable rod 71 and the upper device to move away from the slotting guide frame 1, the limiting spring 72 is stretched accordingly, so that the limiting rod 73 does not block the pulling guide frame 65 any more, the torsion spring 64 is reset accordingly, the groove disc 63 and the upper device thereof are reset, the groove disc 63 pushes the opening plate 54 and the upper device thereof to move away from each other, the second stretching spring 55 is stretched accordingly, then the pushing rod 84 is separated from the movable rod 71, the movable rod 71 and the upper device thereof are reset under the resetting action of the limiting spring 72, so that the limiting rod 73 blocks the pulling guide frame 65 again, under the action of the slotting guide plate 81, the pushing rod 84 is reset under the resetting action of the first stretching spring 48, finally, the electric push rod 31 is manually controlled to close, the operations are repeated, the plastic bags can be continuously opened so as to put the chicken into the package, and then vacuum packaging is carried out on the mixture by other equipment.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.