Rotating device of rubber band opening mechanism

Abstract

The utility model discloses a rotating device of a rubber band opening mechanism, which comprises a support plate, a driving mechanism mounted on the back of the support plate, a turntable mounted on the front of the support plate, a rotating shaft of the driving mechanism driving the turntable to rotate, a cam arranged in the turntable, and a track groove formed between the turntable and the cam. The rotating disc and the cam are both arranged in the sealing bottom shell, the rubber band opening mechanism is installed on the peripheral wall of the sealing bottom shell, after a telescopic part of the rubber band opening mechanism penetrates through the peripheral wall of the sealing bottom shell, a movable wheel is installed at the bottom of the rubber band opening mechanism, and the movable wheel is arranged in the rail groove. Meanwhile, the middle cam is in a fixed static state; compared with the prior art, the rotating disc is matched with the cam to form the track groove, the telescopic degree of the telescopic part is changed through the shape of the track groove, and then the working state of the rubber band opening mechanism is controlled.

Description

Technical Field

[0001] This utility model belongs to the field of crab binding technology, specifically relating to a rotating device for a rubber band spreading mechanism. Background Technology

[0002] The applicant's prior patent application, publication number CN 116788568 A, entitled "Swimming Crab Binding Machine," employs a turntable design with four sets of rubber band opening mechanisms. Cutting and rotation are performed in tandem, reducing the time lag between internal mechanical parts and improving the integration of various mechanical components. However, in manufacturing and actual use, the applicant found that each of the four rubber band opening mechanisms on the turntable requires a separate motor, leading to higher overall equipment costs. Furthermore, the need for control mechanisms between multiple motors complicates the programming, making it difficult to achieve optimal integration. Summary of the Invention

[0003] The purpose of this invention is to design a rotating device for a rubber band spreading mechanism, which upgrades the existing turntable and changes the cyclic working state of the rubber band spreading mechanism by using the outer ring curved surface of the cam, thereby saving manufacturing costs.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A rotating device for a rubber band spreading mechanism includes a support plate, a drive mechanism mounted on the back of the support plate, and a turntable mounted on the front of the support plate. The rotating shaft of the drive mechanism drives the turntable to rotate. A cam is disposed inside the turntable, and a track groove is formed between the turntable and the cam. Both the turntable and the cam are disposed inside a sealed bottom shell. The rubber band spreading mechanism is mounted on the peripheral wall of the sealed bottom shell. The telescopic part of the rubber band spreading mechanism passes through the peripheral wall of the sealed bottom shell, and a movable wheel is mounted at its bottom. The movable wheel is placed in the track groove. The rotation of the turntable drives the sealed bottom shell and the rubber band spreading mechanism to rotate, while the cam in the middle is in a fixed stationary state.

[0006] Furthermore, the drive mechanism specifically uses the output shaft of a motor to drive the turntable to rotate, or the motor drives the turntable to rotate via a conveyor belt and pulleys.

[0007] Furthermore, a bearing housing is installed at the end of the rotating shaft, and a cam is installed on the bearing housing. When the turntable rotates, the cam remains stationary.

[0008] Furthermore, the sealed bottom shell is hexagonal, with a sealing cover plate installed on top, and is filled with lubricating oil.

[0009] Furthermore, a linear guide is installed on the sealing cover, and a slider is installed on the linear guide. The slider and the movable wheel are connected by a connector.

[0010] Furthermore, three sets of rubber band expansion mechanisms are installed on the sealed bottom shell.

[0011] The above technical solution can achieve the following beneficial effects:

[0012] Compared with the prior art, this utility model forms a track groove by cooperating with the turntable and the cam. The shape of the track groove changes the degree of extension and retraction of the telescopic part, thereby controlling the working state of the elastic band opening mechanism. The above structure can drive three sets of elastic band opening mechanisms to run in a cycle at the same time. The turntable, cam and movable wheel are all set in the sealed bottom shell and sealed by the sealing cover plate. Lubricating oil is added inside to ensure that the device can run thousands of times. The wear between the various structural components is low and the service life is long.

[0013] In terms of device performance, the rationale for setting up three sets of rubber band opening mechanisms is that each set of rubber band opening mechanisms can be in three states: closed, unfolded, and waiting. This allows for coordinated work allocation. Compared with the existing four sets of rubber band opening mechanisms, there is no ineffective operation or standby state. Secondly, the manufacturing cost can be significantly reduced. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the rotating device.

[0015] Figure 2 This is a partial operational diagram of the three sets of elastic bands spreading mechanism.

[0016] Figure 3 This is an overall schematic diagram.

[0017] In the picture:

[0018] In the diagram: 1. Support plate; 2. Cam; 3. Track groove; 4. Rubber band spreading mechanism; 5. Telescopic part; 6. Movable wheel; 8. Turntable; 9. Sealed bottom shell; 10. Linear guide rail; 11. Slider; 12. Connecting part. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figure 1-2 As shown, a rotating device for a rubber band spreading mechanism includes a support plate 1, and a driving mechanism is mounted on the back of the support plate. This driving mechanism is not located on... Figure 1As shown in the schematic diagram, its structure is a conventional technology. The drive mechanism shown here only needs to be able to drive the turntable to rotate. The drive mechanism can directly use the output shaft of the motor to drive the turntable to rotate, or the motor can drive the turntable to rotate through a conveyor belt and pulleys. The specific choice can be made based on cost and the layout of the crab binding machine housing. The turntable 8 is installed on the front of the support plate. The rotating shaft of the drive mechanism drives the turntable 8 to rotate. A bearing seat is installed at the end of the rotating shaft. A cam is installed on the bearing seat. The turntable rotates, but the cam is in a stationary state. The cam is set inside the turntable 8, and a track groove 3 is formed between the turntable and the cam 2. Both the turntable and the cam 2 are installed inside the sealed bottom shell 9, and a sealing cover plate is installed on it. The sealed bottom shell is filled with lubricating oil. The rubber band opening mechanism 4 is installed on the periphery of the sealed bottom shell 9. The telescopic part 5 of the rubber band opening mechanism 4 passes through the periphery of the sealed bottom shell 9. A movable wheel 6 is installed at the bottom of the telescopic part 5. The movable wheel 6 is placed in the track groove 3 and moves along the track groove 3. The rotation of the turntable 8 drives the sealed bottom shell 9 and the rubber band opening mechanism 4 to rotate, while the cam 2 in the middle is in a stationary state.

[0021] Figure 2 As shown, based on the above embodiment: a linear guide rail 10 is installed on the sealing cover plate, a slider 11 is installed on the linear guide rail, and the slider and the movable wheel 6 are connected by a connector 12 to achieve precise positioning and motion control, thereby improving production efficiency and product quality; three sets of rubber band opening mechanisms 4 are installed on the sealing bottom shell 9.

[0022] Based on the above embodiments: a sealing ring is added between the sealing bottom shell 9 and the sealing cover plate to prevent lubricating oil leakage.

[0023] In the above embodiments, the rubber band spreading mechanism is prior art. The applicant's previous application CN219989590U, entitled "Rubber Band Spreading Device for Binding Swimming Crabs", has the same structure and operating principle as the rubber band spreading mechanism involved in this application. The difference is that the lead screw is replaced with the telescopic part of this application. Other structures will not be described in detail here.

[0024] The operating principle of the device is as follows:

[0025] Figure 3The rotating device shown has three sets of rubber band spreading mechanisms. The central turntable has a cam mounted on it. The top of the cam is convex and gradually concaves from left to right. The movable wheel 6 of the rubber band spreading mechanism moves within the track groove 3. When at the top, the claws of the rubber band spreading mechanism are closed, allowing the rubber band to easily fit onto the four closed claws. As it moves to the right from the top (where the track groove 3 is closest to the sealing bottom shell's peripheral wall), the turntable continues to rotate, and the movable wheel 6 and the rubber band spreading mechanism continue to rotate clockwise. Because the cam gradually concaves to the right, the track groove 3 gradually enlarges (the distance between the track groove 3 and the sealing bottom shell's peripheral wall gradually increases), causing the telescopic part to lengthen. The four claws of the rubber band spreading mechanism gradually unfold, spreading the rubber band. The crab claws are placed inside the spread rubber band, and the rubber band can be removed using a lever (this is described in patent publication number CN 116788568). A explains that, in order to clearly illustrate the relationship of the action principle, this application cites the description, stating that there are several ways to remove the rubber band. In order to clearly illustrate what the rubber band does after it is stretched, the applicant needs to emphasize that how to remove the rubber band is not a technical issue of this application. After the rubber band is removed, the rubber band stretching mechanism rotates clockwise. Due to the cam structure, the rubber band stretching mechanism gradually closes and eventually reaches the top.

[0026] The above descriptions are all preferred embodiments of this utility model. For those skilled in the art, any modifications to this utility model in various equivalent forms without departing from the principle of this utility model shall fall within the protection scope of the appended claims.

Claims

1. A rotating device for a rubber band distraction mechanism, characterized by: The rotating device comprises a support plate (1), a driving mechanism is installed on the back of the support plate, a rotating disc (8) is installed on the front of the support plate, the rotating shaft of the driving mechanism drives the rotating disc (8) to rotate, a cam is arranged in the rotating disc (8), a track groove (3) is formed between the rotating disc and the cam (2), the rotating disc and the cam (2) are arranged in a sealed bottom shell (9), a rubber band opening mechanism (4) is installed on the peripheral wall of the sealed bottom shell (9), the extension part (5) of the rubber band opening mechanism (4) penetrates through the peripheral wall of the sealed bottom shell (9), the bottom of the extension part (5) is provided with a movable wheel (6), the movable wheel (6) is arranged in the track groove (3), the rotating disc (8) drives the sealed bottom shell (9) and the rubber band opening mechanism (4) to rotate, and the cam (2) in the middle is in a fixed and stationary state.

2. A rotating device for a hair band retraction mechanism according to claim 1, wherein: The driving mechanism is specifically an output shaft of a motor which drives the rotating disc to rotate, or the motor drives the rotating disc (8) to rotate through a transmission belt and a belt wheel.

3. A rotating device for a hair band retraction mechanism according to claim 1, wherein: The end of the rotating shaft is provided with a bearing seat, and the bearing seat is provided with the cam; the rotating disc rotates, and the cam is fixed and stationary.

4. A rotating device for a hair band retraction mechanism according to claim 1, wherein: The sealed bottom shell (9) is a hexagonal body, a sealing cover plate is installed on the top of the sealed bottom shell (9), and the sealing cover plate is filled with lubricating oil.

5. A rotating device for a rubber band expanding mechanism according to claim 4, wherein: The sealing cover plate is provided with a linear guide rail (10), the linear guide rail (10) is provided with a sliding block (11), and the sliding block (11) and the movable wheel (6) are connected through a connecting piece (12).

6. A rotating device for a hair band retraction mechanism according to claim 1, wherein: Three groups of rubber band opening mechanisms (4) are installed on the sealed bottom shell (9).

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