Egg knocking mechanism

Abstract

The utility model discloses an egg knocking mechanism which is arranged on a conveying belt of an egg knocking machine and comprises a clamp arm, a supporting shaft, an auxiliary shaft, a swing arm, a first acting cylinder, an opening assembly and an egg pressing assembly, the supporting shaft is horizontally arranged below the conveying belt, and the two ends of the supporting shaft are rotatably connected to a machine frame of the egg knocking machine; the bottoms of the clamp arms are slidably connected to the supporting shaft and the auxiliary shaft through two sleeves respectively, and the clamp arms are connected with the supporting shaft through sliding keys. The two clamp arms are arranged in a face-to-face mode, and egg knocking knives are installed at the end portions of cantilevers, extending upwards, of the clamp arms and can pierce eggs borne by egg support holes of the conveying belt after moving upwards; the distraction assembly is arranged below the forceps arms and can drive the two forceps arms to get close to each other or get away from each other; the root of the swing arm is fixedly connected with the supporting shaft. The far end of the swing arm is hinged to the piston rod end of the first acting cylinder. The egg pressing assembly is arranged above the upper half portion of the conveying belt and can downwards press the eggs borne by the egg support hole positions above the egg knocking knives. The egg breaking device reduces the amount of broken egg skins and improves the egg breaking quality.

Description

Technical Field

[0001] This utility model relates to the technical field of egg processing equipment, and in particular to an egg-cracking mechanism. Background Technology

[0002] In the food processing industry, the demand for eggs is very high. For example, the mass production of poached eggs, cakes, omelets, egg pizzas, and stir-fries all require cracking eggs to separate the egg whites and yolks. Currently, egg cracking is mainly done in two ways: manual cracking, which is inefficient, labor-intensive, and costly, and prolonged work can lead to fatigue, causing eggshell fragments to fall into the cracked egg liquid, affecting egg quality; and using egg crackers. However, the structure of the crackers used in current egg crackers is unreasonable, easily breaking the eggshell at the cracking point, with fragments falling into the egg whites and yolks, affecting their quality. For example, the utility model patent CN209251665U describes an egg cracker that uses a cracking spring above the egg tray to break the egg supported by the tray, which easily produces broken eggshell fragments. For example, invention patent CN110731472A discloses a fully automatic egg product production equipment. In this equipment, an automatic egg-cracking device positions the egg through positioning holes on an egg tray. Then, a pressing mechanism presses the egg down onto a cracking and breaking mechanism for cracking. The cracking and breaking mechanism then breaks the eggshell, completely mimicking the action of manually cracking an egg. This is scientifically sound, requires no complex transmission connections, and is easier to control, resulting in better cracking stability. However, this method, where the pressing mechanism is needed to force the breaking mechanism to pierce the egg, is prone to producing broken eggshell fragments at the piercing point.

[0003] Therefore, it is necessary to develop an egg-cracking mechanism to address the aforementioned shortcomings. Utility Model Content

[0004] The purpose of this invention is to provide an egg-cracking mechanism that uses an upward-swinging clamp arm to drive the egg-cracking blade to actively pierce the compressed egg, reducing the amount of broken eggshells and improving the quality of egg cracking.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model relates to an egg-cracking mechanism, mounted on the conveyor belt of an egg-cracking machine. It includes clamp arms, a support shaft, an auxiliary shaft, a swing arm, an actuating cylinder, a spreading assembly, and an egg-pressing assembly. The support shaft is horizontally positioned below the upper half of the conveyor belt, with both ends rotatably connected to the machine frame. The bottom of the clamp arms is slidably connected to the support shaft and the auxiliary shaft via two sleeves, respectively. The clamp arms and the support shaft are connected by a sliding key. The two clamp arms are positioned face-to-face, with an egg-cracking blade mounted on the upward-extending cantilever end of each clamp arm. The egg-cracking blade can move upwards and pierce the egg tray holes on the conveyor belt. The spreading assembly is positioned below the clamp arms and can drive the two clamp arms closer together or further apart. The base of the swing arm is fixedly connected to the support shaft, and the distal end of the swing arm is hinged to the piston rod end of the actuating cylinder. The egg-pressing assembly is positioned above the upper half of the conveyor belt and can press downwards onto the egg tray holes above the egg-cracking blade.

[0007] Furthermore, the spreading assembly includes a bottom wheel, a spreading wheel, and a pushing component. The bottom wheel is located at the bottom end of the clamp arm, and the two bottom wheels roll in contact with each other on the side wall of the spreading wheel. The side wall of the spreading wheel is symmetrically provided with return grooves. The two sets of pushing components are respectively located on the outside of the two clamp arms and push the clamp arms inward.

[0008] Furthermore, the pushing component includes a compression spring and a limiting sleeve, which are sleeved on the support shaft. The limiting sleeve is fixed on the support shaft by a set screw on the side wall. The two ends of the compression spring abut against the sleeve end wall of the clamp arm and the end wall of the limiting sleeve, respectively.

[0009] Furthermore, the egg cracker is mounted on the cantilever end of the pliers arm by screws, and the egg cracker bends inward and extends upward; the inner walls of the two egg crackers can abut together.

[0010] Furthermore, the outer edge of the top edge of the egg-cracking knife is provided with a chamfer.

[0011] Furthermore, it also includes a limiting component, which is installed on the frame of the egg-cracking machine via a crossbeam tube. The limiting component can limit the rearward swing position of the bottom of the swing arm.

[0012] Furthermore, the limiting assembly includes a set screw support, a limiting set screw rod, and a lock nut. The bottom of the set screw support is fixedly connected to the top surface of the crossbeam tube near the side of the swing arm. The limiting set screw rod is threadedly connected to the threaded hole of the set screw support. The lock nut is threadedly connected to the limiting set screw rod and locked to the end face of the set screw support. The end cap of the limiting set screw rod facing the swing arm limits the side wall of the swing arm.

[0013] Furthermore, the egg-pressing assembly includes a pressure plate, a support plate, guide pillars, a second actuating cylinder, and a second compression spring. The second actuating cylinder is mounted on the support plate with its head facing downwards. Both ends of the support plate are fixedly connected to the frame of the egg-cracking machine. The piston rod of the second actuating cylinder extends downwards and is connected to the pressure plate. The pressure plate is in contact with the top shell of the egg. A vertical guide structure consisting of multiple guide pillars and the second compression spring is arranged between the pressure plate and the support plate. The second compression spring provides a clamping force to press the pressure plate.

[0014] Furthermore, the bottom of the pressure plate is provided with an arc-shaped groove that conforms to the top shell of the egg, and a rubber pad is attached to the arc-shaped groove.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This practical egg-cracking mechanism uses an actuating cylinder to drive a swing arm, which in turn rotates a support shaft at a certain angle. The cracking blade at the cantilever end of the clamping arm actively pierces the egg, which is held down by the egg-pressing component, thus improving the quality of egg cracking. By installing a spreading component below the clamping arm, the two clamping arms are driven to move closer or further apart, mimicking the action of a human hand breaking an egg. This innovative egg-cracking mechanism uses an upward-swinging clamping arm to drive the cracking blade to actively pierce the compressed egg, reducing the amount of broken eggshell and improving the quality of egg cracking.

[0017] Furthermore, by pressing and rolling the bottom wheel against the end face of the opening wheel, and by having return grooves on both end faces of the opening wheel, the two clamp arms can be synchronously driven to move closer and further apart. One rotation of the opening wheel completes one prying action. A compression spring and a limiting sleeve are positioned on the outside of the clamp arms. The compression spring pushes inward against the sleeve end wall of the clamp arm, ensuring that the bottom wheel always abuts against the end face of the opening wheel. The axial displacement of the limiting sleeve adjusts the clamping force of the compression spring. By rationally designing the cross-sectional shape of the egg-cracking blades, the two blades fit together when closed, reducing the chance of eggshell breakage. A chamfered edge on the outer edge of the egg-cracking blades sharpens the tip, making it easier to penetrate the egg. By incorporating a limiting component, when the actuating cylinder pulls back the bottom of the swing arm, the limiting component restricts the rotation angle of the support shaft by resting on the side wall of the swing arm. This prevents the clamp arm from excessively lifting, which could cause the egg-cracking knife to penetrate the egg excessively and break the yolk. The limiting screw, as the main limiting component, allows for precise adjustment of the limiting position through rotation. The compression spring provides the clamping force between the pressure plate and the eggshell, while the actuating cylinder only acts as a return stroke, resulting in gentle pressure and preventing the egg from being crushed. The arc-shaped groove at the bottom of the pressure plate increases the contact area with the egg, making the clamping more stable. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the main structure of the egg-cracking mechanism of this utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of partial cross-sectional structure of the middle AA section;

[0021] Figure 3 for Figure 1 Schematic diagram of the structure in the B-direction view;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the spreading wheel in this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Conveyor belt; 101. Egg tray hole pad; 2. Pliers arm; 201. Egg cracking knife; 3. Support shaft; 4. Auxiliary shaft; 5. Swing arm; 6. Bottom wheel; 7. Spreading wheel; 701. Return groove; 702. Wheel axle; 8. Actuating cylinder one; 9. Limiting assembly; 10. Compression spring one; 11. Limiting sleeve block; 12. Pressure plate; 13. Support plate; 14. Guide post; 15. Actuating cylinder two; 16. Compression spring two. Detailed Implementation

[0024] The core of this invention is to provide an egg-cracking mechanism that uses an upward-swinging clamp arm to drive the egg-cracking blade to actively pierce the compressed egg, reducing the amount of broken eggshells and improving the quality of egg cracking.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Refer to the attached diagram. Figure 1 This is a schematic diagram of the main structure of the egg-cracking mechanism of this utility model; Figure 2 for Figure 1 Schematic diagram of partial cross-sectional structure of the middle AA section; Figure 3 for Figure 1 Schematic diagram of the structure in the B-direction view; Figure 4This is a schematic diagram of the three-dimensional structure of the spreading wheel in this utility model.

[0028] In one specific implementation, such as Figures 1-4 As shown, the egg-cracking mechanism of this utility model is installed on the conveyor belt 1 of an egg-cracking machine, including a clamp arm 2, a support shaft 3, an auxiliary shaft 4, a swing arm 5, an actuating cylinder 8, a spreading assembly, and an egg-pressing assembly. The conveyor belt 1 is horizontally installed on the frame of the egg-cracking machine, and multiple egg trays are arranged on the conveyor belt 1. Each egg tray has at least one egg tray hole 101, which is a through hole, and the lower part of the egg it supports protrudes below the egg tray hole 101. A rubber pad is provided on the egg tray hole 101. The support shaft 3 is horizontally installed below the upper half of the conveyor belt 1 and its two ends are rotatably connected to the frame of the egg-cracking machine. The two ends can be supported by bearing seats. The bottom of the clamp arm 2 is slidably connected to the support shaft 3 and the auxiliary shaft 4 respectively through two sleeves. The clamp arm 2 and the support shaft 3 are connected by a sliding key, that is, the clamp arm 2 and the support shaft 3 cannot rotate relative to each other. Two clamping arms 2 are positioned facing each other. An egg-cracking knife 201 is installed at the cantilevered end of each clamping arm 2, which can move upwards to pierce the egg tray hole 101 on the conveyor belt 1. A spreading component is located below the clamping arms 2 and can drive the two clamping arms 2 to move closer or further apart, thus cracking the egg. A support shaft 3 is fixedly connected to the base of a swing arm 5, and the piston rod end of an actuating cylinder 8 is hinged to the distal end of the swing arm 5. The actuating cylinder 8 is mounted on the frame of the egg-cracking machine via a hinged seat. The egg-pressing component is located above the upper half of the conveyor belt 1 and can press downwards to compress the egg tray hole 101 above the egg-cracking knife 201.

[0029] The action cylinder 8 drives the swing arm 5 to rotate the support shaft 3 by a certain angle. The egg-cracking blade 201 at the cantilever end of the clamp arm 2 actively pierces the egg that is pressed down by the egg-pressing component, improving the egg-breaking and shell-breaking situation. By setting the spreading component below the clamp arm 2, the two clamp arms 2 are driven to move closer or further apart, mimicking the action of a human hand breaking an egg. This invention's egg-cracking mechanism uses an upward swinging clamp arm to drive the egg-cracking blade to actively pierce the pressed egg, reducing the amount of broken eggshell and improving the quality of egg cracking.

[0030] In one specific embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 4As shown, the opening assembly includes a bottom wheel 6, an opening wheel 7, and a pushing component. The bottom wheel 6 is located at the bottom end of the clamp arm 2. Specifically, the bottom wheel 6 is replaced by a deep groove ball bearing, and the supporting short shaft of the deep groove ball bearing is installed at the bottom end of the clamp arm 2 by screws. The two bottom wheels 6 roll in contact with the side wall of the opening wheel 7, and the side wall of the opening wheel 7 is symmetrically provided with return grooves 701, the central angle of the return grooves 701 being not less than 135 degrees. One rotation of the opening wheel 7 completes one opening action. A geared motor for driving is provided at one end of the wheel axle 702 of the opening wheel 7. Two sets of pushing components are respectively located on the outside of the two clamp arms 2 and push the clamp arms 2 inward.

[0031] Specifically, such as Figure 2 As shown, the pushing component includes a compression spring 10 and a limiting sleeve 11. The compression spring 10 and the limiting sleeve 11 are sleeved on the support shaft 3. The limiting sleeve 11 is fixed to the support shaft 3 by a set screw on the side wall, that is, the limiting sleeve 11 can move axially on the support shaft 3. The two ends of the compression spring 10 abut against the sleeve end wall of the clamp arm 2 and the end wall of the limiting sleeve 11, respectively.

[0032] Obviously, the pushing component can also be replaced by a tension spring disposed between the two clamp arms 2, which can also tighten the two clamp arms 2 together. Similar simple replacement methods all fall within the protection scope of this utility model.

[0033] The bottom wheel 6 presses against the end face of the spreading wheel 7, and return grooves 701 are opened on the two end faces of the spreading wheel 7, which can realize the synchronous driving of the two clamp arms 2 to move closer and further apart. One rotation of the spreading wheel 7 realizes one prying action. The compression spring 10 and the limiting sleeve 11 are set on the outside of the clamp arm 2. The compression spring 10 pushes inward against the sleeve end wall of the clamp arm 2, ensuring that the bottom wheel 6 always abuts against the end face of the spreading wheel 7. The axial displacement of the limiting sleeve 11 can adjust the clamping force of the compression spring 10.

[0034] In one specific embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the egg cracker 201 is mounted on the cantilever end of the clamp arm 2 by screws. The base of the egg cracker 201 is attached to the outer side of the cantilever end of the clamp arm 2, and the screw is inserted and tightened from the outside. The upper part of the egg cracker 201 bends inward and extends upward, that is, the cross-section of the egg cracker 201 is Z-shaped. The upper inner walls of the two egg crackers 201 can abut together, reducing the contact area when piercing the egg.

[0035] Specifically, such as Figure 3 As shown, the outer edge of the top edge of the egg cracker 201 is beveled, which sharpens the tip of the egg cracker 201 so that the egg cracker 201 can smoothly penetrate the egg.

[0036] By properly designing the cross-sectional shape of the egg cracker 201, the two egg crackers 201 fit together when closed, reducing the chance of eggshell breakage. By setting a chamfer on the outer edge of the top edge of the egg cracker 201, the tip of the egg cracker 201 is sharpened, making it easier to pierce the egg.

[0037] In one specific embodiment of this utility model, such as Figure 1 As shown, the egg-cracking mechanism of this utility model also includes a limiting component 9. The limiting component 9 is installed on the frame of the egg-cracking machine through a crossbeam tube. The limiting component 9 can limit the rearward swing position of the bottom of the swing arm 5.

[0038] Specifically, the limiting assembly 9 includes a set screw support, a limiting set screw rod, and a lock nut. The bottom of the set screw support is directly welded to the top surface of the crossbeam tube near the side of the rocker arm 5. The limiting set screw rod is threaded into the threaded hole of the set screw support. The lock nut is threaded onto the limiting set screw rod and locked to the end face of the set screw support. The end cap of the limiting set screw rod facing the rocker arm 5 limits the side wall of the rocker arm 5.

[0039] By setting the limiting component 9, when the actuating cylinder 8 pulls back the bottom of the swing arm 5, the limiting component 9 is restricted on the side wall of the swing arm 5, which can limit the rotation angle of the support shaft 3, thus preventing the clamp arm 2 from rising too high, causing the egg-cracking knife 201 to penetrate the egg excessively and cause the yolk to break; by setting the limiting top screw as the main limiting component of the limiting component 9, the limiting position can be precisely adjusted by rotation.

[0040] In one specific embodiment of this utility model, such as Figure 1 As shown, the egg-pressing assembly includes a pressure plate 12, a support plate 13, guide posts 14, a second actuating cylinder 15, and a second compression spring 16. The second actuating cylinder 15 is mounted head-down on the support plate 13, and both ends of the support plate 13 are bolted to the frame of the egg-cracking machine. The piston rod extending downwards from the second actuating cylinder 15 connects to the pressure plate 12, and the pressure plate 12 contacts the top shell of the egg. A vertical guide structure consisting of multiple guide posts 14 and the second compression spring 16 is arranged between the pressure plate 12 and the support plate 13, and the second compression spring 16 provides the clamping force to press the pressure plate 12.

[0041] Specifically, such as Figure 1 As shown, the bottom of the pressure plate 12 is provided with an arc-shaped groove that conforms to the top shell of the egg, and a rubber pad is attached to the arc-shaped groove.

[0042] The compression spring 16 provides the clamping force between the pressure plate 12 and the eggshell, while the cylinder 15 only serves a return function, resulting in gentle pressure and preventing the egg from being crushed. The arc-shaped groove at the bottom of the pressure plate 12 increases the contact area with the egg, making the clamping more stable.

[0043] The working process of this egg-cracking mechanism is as follows: Conveyor belt 1 transports eggs one by one from the feed hopper. When the egg tray hole 101 supports the egg and it reaches directly above the cracking blade 201, the intermittently conveying conveyor belt 1 pauses. The second actuating cylinder 15 stops airflow and no longer pulls back. Under the action of the second compression spring 16, the pressure plate 12 moves downwards and presses against the top of the egg supported by the egg tray hole 101. The first actuating cylinder 8 pulls the bottom end of the swing arm 5 backwards, causing the support shaft 3 to rotate at a certain angle. The cracking blade 201 at the cantilever end of the clamp arm 2 actively pierces the egg pressed by the egg-pressing component. The reduction motor drives the spreading wheel 7, and the bottom wheel 6 gradually rolls out of the return groove 701. During the rolling process, the two clamp arms 2 move away from each other, and the two cracking blades 201, which were originally closed together, break open the bottom shell of the egg. The egg liquid falls downwards into the collection tray under its own weight. After the wheel 7 rotates one full turn, the two egg-cracking blades 201 close together again. The first action cylinder 8 pushes forward, and the egg-cracking blade 201 returns to its original position. The second action cylinder 15 receives air and pulls back the pressure plate 12. The conveyor belt 1 transports the next egg to the top of the egg-cracking blade 201, ready for the next egg-cracking operation. This cycle continues.

[0044] In summary, the egg-cracking mechanism of this invention uses the actuating cylinder 8 to drive the swing arm 5 to rotate the support shaft 3 by a certain angle. The cracking blade 201 at the cantilever end of the clamp arm 2 actively pierces the egg pressed by the egg-pressing component, improving the egg-breaking and shell-breaking situation. By setting the spreading component below the clamp arm 2, the two clamp arms 2 are driven to move closer or further apart, mimicking the action of a human hand breaking an egg. The egg-cracking mechanism of this invention uses the upward swinging clamp arm to drive the cracking blade to actively pierce the pressed egg, reducing the amount of broken eggshell and improving the quality of cracking. In addition, by pressing and rolling the bottom wheel 6 on the end face of the spreading wheel 7, and by opening return grooves 701 on the two end faces of the spreading wheel 7, the two clamp arms 2 can be driven to move closer and further apart synchronously. One rotation of the spreading wheel 7 completes one breaking action. The compression spring 10 and the limiting sleeve 11 are set on the outside of the clamp arm 2. The compression spring 10 pushes inward against the sleeve end wall of the clamp arm 2, ensuring that the bottom wheel 6 always abuts against the end face of the spreading wheel 7. The axial displacement of the limiting sleeve 11 can adjust the clamping force of the compression spring 10. By reasonably setting the cross-sectional shape of the egg cracker 201, the two egg crackers 201 fit together when they are closed, reducing the chance of breaking the shell. By setting a chamfer on the outer edge of the top edge of the egg cracker 201, the top of the egg cracker 201 is sharpened, making it easier to penetrate the egg. By setting the limiting component 9, when the actuating cylinder 8 pulls back the bottom end of the swing arm 5, the limiting component 9 restricts the side wall of the swing arm 5, which can limit the rotation angle of the support shaft 3, thus preventing the clamp arm 2 from rising too high, causing the egg cracker 201 to penetrate the egg too much and cause the yolk to break. By setting the limiting screw as the main limiting component of the limiting component 9, the limiting position can be precisely adjusted by rotation. The compression spring 16 provides the clamping force between the pressure plate 12 and the eggshell, while the cylinder 15 only serves a return function, resulting in gentle pressure and preventing the egg from being crushed. The arc-shaped groove at the bottom of the pressure plate 12 increases the contact area with the egg, making the clamping more stable.

[0045] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0046] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An egg-cracking mechanism, disposed on the conveyor belt (1) of an egg-cracking machine, characterized in that, The machine includes a clamp arm (2), a support shaft (3), an auxiliary shaft (4), a swing arm (5), an action cylinder (8), a spreading assembly, and an egg-pressing assembly. The support shaft (3) is horizontally positioned below the upper half of the conveyor belt (1) and its two ends are rotatably connected to the frame of the egg-cracking machine. The bottom of the clamp arm (2) is slidably connected to the support shaft (3) and the auxiliary shaft (4) respectively via two sleeves. The clamp arm (2) and the support shaft (3) are connected by a sliding key. The two clamp arms (2) are arranged facing each other, and an egg-cracking knife (20) is installed on the cantilever end of the clamp arm (2) extending upward. 1) The egg-cracking knife (201) can move upward and pierce the egg in the egg tray hole (101) of the conveyor belt (1); the spreading component is located below the clamp arm (2) and can drive the two clamp arms (2) to move closer or further apart; the root of the swing arm (5) is fixedly connected to the support shaft (3), and the far end of the swing arm (5) is hinged to the piston rod end of the first action cylinder (8); the egg-pressing component is located above the upper half of the conveyor belt (1) and can press down on the egg in the egg tray hole (101) above the egg-cracking knife (201).

2. The egg-cracking mechanism according to claim 1, characterized in that, The spreading assembly includes a bottom wheel (6), a spreading wheel (7), and a pushing component. The bottom wheel (6) is located at the bottom end of the clamp arm (2). The two bottom wheels (6) roll in contact with each other on the side wall of the spreading wheel (7). The side wall of the spreading wheel (7) is symmetrically provided with return grooves (701). The two sets of pushing components are respectively located on the outside of the two clamp arms (2) and push the clamp arms (2) inward.

3. The egg-cracking mechanism according to claim 2, characterized in that, The pushing component includes a compression spring (10) and a limiting sleeve (11). The compression spring (10) and the limiting sleeve (11) are sleeved on the support shaft (3). The limiting sleeve (11) is fixed on the support shaft (3) by a set screw on the side wall. The two ends of the compression spring (10) abut against the sleeve end wall of the clamp arm (2) and the end wall of the limiting sleeve (11), respectively.

4. The egg-cracking mechanism according to claim 1, characterized in that, The egg cracker (201) is mounted on the cantilever end of the clamp arm (2) by screws. The egg cracker (201) is bent inward and then extends upward. The inner walls of the two egg crackers (201) can abut together.

5. The egg-cracking mechanism according to claim 4, characterized in that, The top edge of the egg-cracking knife (201) is chamfered.

6. The egg-cracking mechanism according to claim 1, characterized in that, It also includes a limiting component (9), which is installed on the frame of the egg-cracking machine through a crossbeam tube. The limiting component (9) can limit the rearward swing position of the bottom of the swing arm (5).

7. The egg-cracking mechanism according to claim 6, characterized in that, The limiting assembly (9) includes a top screw support, a limiting top screw rod, and a lock nut. The bottom of the top screw support is fixedly connected to the top surface of the crossbeam tube near the side of the swing arm (5). The limiting top screw rod is threadedly connected to the threaded hole of the top screw support. The lock nut is threadedly connected to the limiting top screw rod and locked to the end face of the top screw support. The end cap of the limiting top screw rod facing the swing arm (5) limits the side wall of the swing arm (5).

8. The egg-cracking mechanism according to claim 1, characterized in that, The egg-pressing assembly includes a pressure plate (12), a support plate (13), guide posts (14), an action cylinder (15), and a compression spring (16). The action cylinder (15) is mounted head-down on the support plate (13). Both ends of the support plate (13) are fixedly connected to the frame of the egg-cracking machine. The piston rod of the action cylinder (15) extends downward and is connected to the pressure plate (12). The pressure plate (12) is in contact with the top shell of the egg. A vertical guide structure consisting of multiple guide posts (14) and compression spring (16) is set between the pressure plate (12) and the support plate (13). The compression spring (16) provides a pressing force to press the pressure plate (12).

9. The egg-cracking mechanism according to claim 8, characterized in that, The bottom of the pressure plate (12) is provided with an arc-shaped groove that is adapted to the top shell of the egg, and a rubber pad is attached to the arc-shaped groove.

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