A neck skin stretching device

Abstract

A neck skin pulling device relates to poultry processing equipment field, including fixed cylinder and its rotation setting and rotation axis coincides with its axis rotation frame, the clamping mechanism is vertically slidably arranged on the rotation frame, the outer circle of the fixed cylinder is provided with a guide groove, the guide groove is not a circle with the axis of the fixed cylinder coinciding with the center of the circle, the clamping mechanism is arranged on the outside of the fixed cylinder and is in sliding fit with the guide groove, one side of the fixed cylinder is provided with a stop block, the clamping mechanism includes a pair of clamping jaws that can be opened and closed, which is arranged to be opened by the resistance of the stop block when passing through the stop block, and can be elastically closed when leaving the stop block. The clamping jaw can be opened by mechanical resistance through the stop block on the fixed cylinder, and can be reset and closed by cooperating with the elastic member; compared with the prior art, the number of parts used in the overall structure is greatly reduced, the cost of part processing, equipment assembly and later debugging is saved, and the guiding wheel and multiple gear transmission cooperation links are reduced, so that the failure probability in the automatic skinning process is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of poultry processing equipment, specifically a neck-skinning device. Background Technology

[0002] In the processing of poultry necks, removing the skin is a crucial step. Traditional manual skinning is not only inefficient and labor-intensive, but also produces inconsistent skinning quality. To address this issue, some skinning devices have emerged on the market that can automate the skinning process when used with a conveyor chain. However, in practical applications, these devices have been found to have limitations.

[0003] The skinning device proposed in patent CN107744008A is used for skinning. It uses a rotating power module to drive the skinning mechanism to make a circular motion in the horizontal plane, and works with a lifting mechanism to automatically remove the duck skin, replacing manual work and improving skinning efficiency to a certain extent. However, when using this skinning device to skin duck necks, it was found that the structure of the device is too complicated: when the clamping module clamps or releases the duck neck, the protruding merging or opening guide rail on the guide cylinder drives the two opening and closing guide wheels to rotate during the rotation of the guide cylinder, which in turn drives the swing gear to rotate. The swing gear then drives the input gear to rotate, and the input gear then drives the clamping module to swing, finally achieving the clamping or releasing of the duck neck. In addition, the clamping module of this structure not only has a limited opening and closing size, but also requires a series of transmissions of many parts during the frequent opening and closing process of automated processing, which greatly increases the processing and assembly debugging costs. At the same time, the cooperation and transmission of many parts also increases the probability of failure in the skinning process. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model provides a neck-skin-scratching device.

[0005] The technical solution of this utility model is as follows: A neck-scratching device includes a fixed cylinder and a rotating frame rotatably mounted on it with its rotation axis coinciding with the cylinder's axis. A clamping mechanism is vertically slidably mounted on the rotating frame. A guide groove is formed on the outer circumference of the fixed cylinder. The guide groove is not a circle whose center coincides with the axis of the fixed cylinder. The clamping mechanism is located on the outside of the fixed cylinder and slidably engages with the guide groove. A stop block is provided on one side of the fixed cylinder. The clamping mechanism includes a closable gripper, which is configured to open when passing through the stop block due to the block's resistance and to elastically close when leaving the stop block.

[0006] As a specific implementation, the clamping mechanism also includes a fixed seat, and the gripper includes two clamping plates disposed opposite to each other on the fixed seat. One end of the two clamping plates extends outward from the fixed seat to form a clamping part. The two clamping parts are connected by an elastic element. The middle part of one of the clamping plates is rotatably connected to the fixed seat, and the end opposite to the clamping part is rotatably provided with a first guide wheel that abuts against the stop block.

[0007] Furthermore, the two clamping parts have notches on opposite sides, and the two notches together form an annular clamping opening, with the two notches being arc-shaped structures with their openings facing each other.

[0008] Preferably, the elastic element is a tension spring.

[0009] Furthermore, two blocks are spaced apart along the outer circumference of the fixed cylinder, and the blocks are arc-shaped protrusions with their centers coinciding with the center of the fixed cylinder.

[0010] Specifically, the inner side of the fixed base is provided with a second guide wheel that rolls with the inner wall of the guide groove. The guide groove includes an ascending groove section, an upper groove section, a descending groove section and a lower groove section that are connected sequentially along the outer periphery of the fixed cylinder. The ascending groove section and the descending groove section are both inclined along the axial direction of the fixed cylinder.

[0011] Furthermore, the planes where the upper and lower groove sections are located are perpendicular to the axis of the fixed cylinder. Two stops are set at the positions corresponding to the upper and lower groove sections, respectively. The gripper is located on the upper part of the fixed base, and the second guide wheel is located on the lower part of the fixed base. The two stops are located on the upper side of the upper and lower groove sections, respectively.

[0012] The opening and closing structure of this utility model's gripper is simple and efficient, eliminating the need for complex guide wheels and multiple gear transmission structures found in existing technologies. It achieves mechanical opening through a stop on the fixed cylinder, and completes resetting and closing with the help of an elastic element. This not only makes the opening and closing action responsive but also allows for adaptive clamping of duck necks of different thicknesses through elastic deformation. At the same time, compared with existing technologies, the number of parts used in the overall structure is significantly reduced, significantly saving costs in parts processing, equipment assembly, and subsequent debugging. Furthermore, by reducing the guide wheels and multiple gear transmission links, the probability of failure during automated skinning is effectively reduced. Attached Figure Description

[0013] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this embodiment; Figure 2 This is a schematic diagram of the cooperation structure between the fixed cylinder and the clamping mechanism in this embodiment; Figure 3 This is a schematic diagram of the gripper's engagement structure with the dial plate and chuck when it is opened and in use according to this embodiment; Figure 4 This is a schematic diagram of the usage structure in this embodiment; The components represented by the various reference numerals in the diagram are: 1. Chain conveyor mechanism; 2. Fixed cylinder; 21. Guide groove; 22. Stop block; 3. Rotating frame; 4. Clamping mechanism; 41. Fixed seat; 42. Clamping plate; 43. First guide wheel; 44. Second guide wheel; 45. Clamping port; 46. Chuck; 461. Limiting notch; 47. Altering plate. Detailed Implementation

[0014] Combination Figure 1 This embodiment provides a neck-scratching device, including a fixed cylinder 2 and a rotating frame 3 rotatably mounted on it with its rotation axis coinciding with the axis of rotation. A clamping mechanism 4 is vertically slidably mounted on the rotating frame 3.

[0015] The outer ring of the fixed cylinder 2 is provided with a guide groove 21. The guide groove 21 is not a circle whose center coincides with the axis of the fixed cylinder 2. The clamping mechanism 4 is located on the outside of the fixed cylinder 2 and slides with the guide groove 21. A stop block 22 is provided on one side of the fixed cylinder 2. The clamping mechanism 4 includes a fixed base 41 and a clamping claw that can be opened and closed. The clamping claw is designed to open when it passes the stop block 22 due to the resistance of the stop block 22, and to elastically reset and close when it leaves the stop block 22.

[0016] In use, the gripper rotates synchronously with the rotating frame 3 under the cooperation of the rotating frame 3 and the fixed cylinder 2, and moves vertically along the rotating frame 3. As the gripper rotates to pass the stop 22 and leaves the stop 22, it completes the action of clamping the duck neck. As it continues to slide down the rotating frame 3, it completes the skinning operation of the duck neck.

[0017] The gripper's opening and closing structure is simple and efficient, eliminating the need for complex guide wheels and multiple gear transmission structures found in existing technologies. It can be mechanically opened by the stop 22 on the fixed cylinder 2, and can be reset and closed when it leaves the stop 22, making the opening and closing action sensitive and allowing it to adaptively clamp duck necks of different thicknesses through elastic deformation. Compared with existing technologies, the number of parts used in the overall structure is greatly reduced, significantly saving costs in parts processing, equipment assembly, and subsequent debugging. At the same time, the reduction of guide wheels and multiple gear transmission links can effectively reduce the probability of failure during automated skinning.

[0018] Combination Figure 4When used in conjunction with the chain conveyor mechanism 1, the neck-skinning device is positioned below the chain conveyor mechanism 1. The chain conveyor mechanism 1 includes a driving sprocket and a driven sprocket arranged opposite each other, with a chain wound around the two sprockets. The neck-skinning device is positioned below the driven sprocket, which is coaxially connected to a main shaft. The rotating frame 3 rotates synchronously with the main shaft to match the conveying rhythm of the duck necks by the chain conveyor mechanism 1. The main shaft passes through the fixed cylinder 2 and is connected to the fixed cylinder 2 via bearings. The rotating frame 3 includes several uprights arranged in a circular array along the outer circumference of the fixed cylinder 2, and two turntables respectively connected to the main shaft on the upper and lower sides of the fixed cylinder 2. Each upright is vertically connected between the two turntables. The duck necks are conveyed by the chain conveyor mechanism 1, with the portion below the head being conveyed in a suspended manner. When passing through the clamping mechanism 4, the duck necks are clamped by the jaws of the clamping mechanism 4, and the skinning operation is completed during the vertical sliding process with the clamping mechanism 4.

[0019] Combination Figure 2 Regarding the specific structure of the clamping mechanism 4, two sliders are provided opposite to each other on the rear side of the fixed base 41. The two sliders are vertically slidably mounted on two adjacent uprights. The gripper includes two clamping plates 42 that are opposite to each other on the fixed base 41. One end of the two clamping plates 42 extends outward from the fixed base 41 to form a clamping part. The two clamping parts are connected by an elastic member. The middle part of one of the clamping plates 42 is rotatably connected to the fixed base 41, and the end opposite to the clamping part is rotatably provided with a first guide wheel 43 that abuts against the stop block 22.

[0020] Preferably, the elastic element is a tension spring, which is made of stainless steel, has a long fatigue life, and is suitable for automated processing scenarios involving high-frequency opening and closing.

[0021] The two clamping parts are respectively provided with columns on their lower sides, and the clamping parts are provided with through holes vertically corresponding to the columns. The upper end of the column passes through the through hole and is screwed to it. The two ends of the tension spring are respectively connected to the lower ends of the two columns. The tension spring can be easily disassembled and assembled by disassembling and assembling the columns. The connection structure between the tension spring and the column can be that an installation hole is opened in the lower part of the column, and the tension spring is hung in the installation hole. Alternatively, the column can preferably be a bolt, with the bolt head located on the lower side of the clamping part. The tension spring is hung on the screw on the upper side of the bolt head and is fixed by compression with nuts, washers and other common parts.

[0022] The clamping parts of the two clamping plates 42 have notches on opposite sides. The two notches are enclosed to form an annular clamping opening 45. The two notches are arc-shaped structures with their openings facing each other and adapted to the contour of the duck neck, which makes the clamping claw fit the duck neck better and can be adapted to duck necks of different thicknesses. At the same time, it avoids damage to the duck neck meat caused by concentrated clamping force, and takes into account both clamping stability and processing quality.

[0023] Two stop blocks 22 are spaced apart along the outer circumference of the fixed cylinder 2, which can be used for feeding duck necks and unloading neck skins respectively, thereby enabling automated continuous processing during the continuous rotation of the rotating frame 3. Specifically: The stop block 22 is an arc-shaped protrusion, the center of which coincides with the center of the fixed cylinder 2. The arc-shaped stop block 22 is precisely matched with the circular motion trajectory of the rotating frame 3, which allows the first guide wheel 43 to slide smoothly along the arc surface, avoiding impact or jamming of the gripper during the opening process. Compared with the straight stop block 22, the arc structure can also extend the opening time of the gripper, providing sufficient operating space for feeding duck necks and unloading neck skin.

[0024] More specifically, the inner side of the fixed base 41 is provided with a second guide wheel 44 that rolls with the inner wall of the guide groove 21. The guide groove 21 includes an ascending groove section, an upper groove section, a descending groove section and a lower groove section that are connected sequentially along the outer periphery of the fixed cylinder 2. The ascending groove section and the descending groove section are both inclined along the axis of the fixed cylinder 2. During the rotation of the fixed cylinder 2, the gripper slides downward and upward along the upright in turn.

[0025] The planes of the upper and lower groove sections are perpendicular to the axis of the fixed cylinder 2. The two stops 22 are respectively set at the positions of the upper and lower groove sections, and the grippers are set on the upper part of the fixed base 41. The second guide wheel 44 is set on the lower part of the fixed base 41. The two stops 22 are located on the upper side of the upper and lower groove sections respectively.

[0026] The grippers engage with the stop block 22 at the upper and lower slot sections respectively, clamping the duck neck at the upper slot section and releasing the skin at the lower slot section, thus completing the skinning operation during the descent from the upper to the lower slot section. This achieves spatial separation of the clamping and guiding functions, resulting in a more compact structural layout and maximizing the vertical sliding skinning stroke of the grippers.

[0027] To assist the gripper in clamping the duck neck smoothly, a lever plate 47 is provided on the upper part of the gripper and on the side opposite to the rotation direction. The lever plate 47 is an arc-shaped plate extending outward from the outer end of the gripper, and the arc-shaped opening of the arc plate faces the side of the gripper's rotation direction to assist the gripper in guiding the duck neck conveyed by the chain conveyor mechanism into the notch of the two lever plates 42.

[0028] In automated processing, clamping mechanisms are provided on two adjacent columns of the rotating frame 3 in this embodiment. The turntable on the upper side of the fixed cylinder 2 is a chuck 46, and its outer edge is vertically provided with a limiting notch 461 corresponding to the clamping port 45 of each clamping mechanism. The opening of the limiting notch 461 faces outward, and each limiting notch 461 of the chuck 46 is provided with the aforementioned lever plate 47 on the side opposite to the rotation direction (see Figure 3 ), used to help the grippers grip the duck's neck smoothly.

Claims

1. A neck-rolling device, characterized in that, It includes a fixed cylinder (2) and a rotating frame (3) rotatably mounted thereon with its rotation axis coinciding with its axis. A clamping mechanism (4) is vertically slidably mounted on the rotating frame (3). The outer ring of the fixed cylinder (2) is provided with a guide groove (21). The guide groove (21) is not a circle whose center coincides with the axis of the fixed cylinder (2). The clamping mechanism (4) is located on the outside of the fixed cylinder (2) and slides with the guide groove (21). A stop block (22) is provided on one side of the fixed cylinder (2). The clamping mechanism (4) includes a clamping claw that can be opened and closed. It is configured to open when passing through the stop block (22) due to the resistance of the stop block (22) and close elastically when leaving the stop block (22).

2. The neck-scratching device as described in claim 1, characterized in that, The clamping mechanism (4) further includes a fixed base (41), and the gripper includes two clamping plates (42) disposed opposite to each other on the fixed base (41). One end of each of the two clamping plates (42) extends outward to the fixed seat (41) to form a clamping part. The two clamping parts are connected by an elastic member. The middle part of one of the clamping plates (42) is rotatably connected to the fixed seat (41), and the end away from the clamping part is rotatably provided with a first guide wheel (43) that abuts against the stop block (22).

3. The neck-scratching device as described in claim 2, characterized in that, The clamping parts of the two clamping plates (42) are provided with notches on opposite sides, and the two notches are enclosed to form an annular clamping opening (45).

4. The neck-scratching device as described in claim 3, characterized in that, The two gaps are arc-shaped structures with openings facing each other.

5. The neck-scratching device as described in claim 2, characterized in that, The elastic element is a tension spring.

6. A neck-scratching device as described in any one of claims 2-5, characterized in that, Two blocks (22) are provided at intervals along the outer circumference of the fixed cylinder (2).

7. The neck-scratching device as described in claim 6, characterized in that, The stop block (22) is an arc-shaped protrusion, the center of which coincides with the center of the fixed cylinder (2).

8. The neck-scratching device as described in claim 7, characterized in that, The inner side of the fixed base (41) is provided with a second guide wheel (44) that rolls with the inner wall of the guide groove (21). The guide groove (21) includes an ascending groove section, an upper groove section, a descending groove section and a lower groove section connected sequentially along the outer periphery of the fixed cylinder (2), wherein the ascending groove section and the descending groove section are both inclined along the axial direction of the fixed cylinder (2).

9. The neck-scratching device as described in claim 8, characterized in that, The planes where the upper and lower groove sections are located are perpendicular to the axis of the fixed cylinder (2), and the two stops (22) are respectively set at the positions of the upper and lower groove sections.

10. The neck-scratching device as described in claim 9, characterized in that, The gripper is located on the upper part of the fixed base (41), the second guide wheel (44) is located on the lower part of the fixed base (41), and the two stops (22) are located on the upper side of the upper groove section and the lower groove section respectively.

Images