Electric rotary cutter for coring
By using bolted connections and a reduction gear set for transmission, the blade replacement process of the core excavation equipment is simplified, solving the problem of inconvenient blade replacement and improving the stability and service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIZHOU TONGYI MASCH EQUIP CO LTD
- Filing Date
- 2025-05-27
- Publication Date
- 2026-05-19
AI Technical Summary
Existing core-digging equipment suffers from inconvenient blade replacement and complex transmission structures, affecting its service life and stability.
The blade is fixed by bolt connection and driven by a reduction gear set, which simplifies the blade replacement process. The blade holder and the rotating shaft are fixed by bolt, which enables flexible blade operation.
It improves the ease of blade replacement, reduces blade jamming, and extends the service life and stability of the equipment.
Smart Images

Figure CN224250617U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fruit processing machinery technology, and relates to a tool for pitting fruit, particularly an electric rotary cutter for pitting fruit. Background Technology
[0002] Removing the pit is one of the essential steps in the production of canned fruit, especially peaches. Traditionally, peaches are processed manually, leading to the development of a fruit peeling and pitting tool (application publication number CN103300694A), which includes a semi-circular blade for pitting.
[0003] With social development, people have proposed various automated fruit pit removal devices, such as a fruit pitting assembly line robot based on image recognition (application publication number CN106333372A) described in Chinese patent literature. This robot includes a following pitting mechanism, which further comprises a pitting motor, a blade fixing shaft, and U-shaped blades. While this pitting mechanism can achieve electrically controlled pitting and improve automation, it also has some shortcomings: 1. The blades are prone to dulling during continuous fruit processing, and the complex connection structure between the blades and the fixing shaft makes blade replacement inconvenient; 2. The complex and exposed transmission structure between the pitting motor and the fixing shaft makes it difficult to handle fruit juice splashing onto the transmission structure during pitting and to clean the transmission structure during equipment cleaning, thus affecting transmission stability and service life. Summary of the Invention
[0004] This utility model proposes an electric rotary cutter for core removal. The technical problem to be solved by this utility model is how to improve the ease of blade replacement for the electric rotary cutter for core removal.
[0005] The technical problem to be solved by this utility model can be achieved through the following technical solution: an electric rotary cutter for core removal, comprising a cutter holder, a motor and a blade, wherein a rotating shaft is rotatably connected to the cutter holder, the housing of the motor is fixedly connected to the cutter holder, and the main shaft of the motor is connected to the rotating shaft through a reduction gear set; the blade comprises a cutter holder part and an arc-shaped blade part fixedly connected to the cutter holder part, a positioning groove is provided on the rotating shaft, the cutter holder part is embedded in the positioning groove, and the cutter holder part is fixedly connected to the rotating shaft by bolts.
[0006] The electric rotary cutter for pitting fruit connects to other devices via a blade holder. When the motor runs, it drives the rotating shaft through a reduction gear set. The rotating shaft causes the blade to swing synchronously, thus cutting the fruit and removing the pit. To remove the blade, first tighten the bolt until it separates from the blade holder, then remove the blade. To install the blade, first insert the blade holder into the positioning groove to position the blade, then tighten the bolt until the blade holder is securely connected to the rotating shaft.
[0007] Compared with existing technologies, the motor, blades, and rotating shaft of this electric rotary cutter for core excavation are all one-to-one, making the control of blade rotation more convenient and flexible. Blade replacement in this electric rotary cutter for core excavation is mainly achieved by tightening bolts, offering the advantage of easy blade replacement.
[0008] In the aforementioned electric rotary cutter for core excavation, the cutter holder includes two vertical columns and a crossbeam connecting the two vertical columns, forming a space for blade installation and rotation; the two ends of the rotating shaft are connected to the two vertical columns one-to-one via bearings.
[0009] In the aforementioned electric rotary cutter for core removal, the cutter holder is rectangular in shape, and the two ends of the blade are connected to the two ends of the cutter holder by welding, corresponding to each other.
[0010] In the aforementioned electric rotary cutter for core excavation, a bolt hole is provided on the cutter holder, and a bolt passes through the rotating shaft and is screwed into the bolt hole.
[0011] In the aforementioned electric rotary cutter for core excavation, the number of bolts is one, two, or three.
[0012] In the aforementioned electric rotary cutter for core removal, the blade section is a long strip-shaped piece with two cutting lines, and the cutting lines transition to the upper and lower plate surfaces. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of an electric rotary cutter used for core removal.
[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the blade.
[0015] Figure 3 This is a schematic diagram of the blade's main structure.
[0016] Figure 4 yes Figure 3 A cross-sectional structural diagram.
[0017] In the diagram, 1. Tool holder; 1a. Vertical column; 1b. Horizontal beam; 2. Motor; 3. Blade; 3a. Tool holder; 3a1. Bolt hole; 3b. Blade; 3c. Cutting edge; 3d. Cutting surface; 4. Rotating shaft; 4a. Positioning groove; 5. Bolt. Detailed Implementation
[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0022] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0023] like Figure 1 As shown, an electric rotary cutter for core removal includes a blade holder 1, a motor 2, and a blade 3.
[0024] The blade holder 1 includes two vertical columns 1a and a crossbeam 1b connecting the two vertical columns 1a; the blade holder 1 forms a space for the installation and rotation of the blade 3. The motor 2 includes a housing and a main shaft, with the housing of the motor 2 fixedly connected to the blade holder 1. A rotating shaft 4 is rotatably connected to the blade holder 1, with both ends of the rotating shaft 4 connected to the two vertical columns 1a one-to-one via bearings. The main shaft of the motor 2 is connected to the rotating shaft 4 via a reduction gear set. The reduction gear set transmission not only reduces the rotational speed of the blade 3, making the swing speed of the blade 3 more conducive to cutting the fruit pit, but also increases the torque, ensuring that the blade 3 can still cut into the fruit pit even if it accidentally makes slight contact with it, reducing the occurrence of blade jamming.
[0025] like Figures 1 to 4 As shown, the blade 3 includes a blade holder 3a and an arc-shaped blade portion 3b fixedly connected to the blade holder 3a. The blade holder 3a is cuboid in shape, and the two ends of the blade portion 3b are welded to the two ends of the blade holder 3a in a corresponding manner. A positioning groove 4a is provided on the side of the rotating shaft 4, and the blade holder 3a is embedded in the positioning groove 4a. A bolt hole 3a1 is provided on the blade holder 3a, and the blade holder 3a is fixedly connected to the rotating shaft 4 by bolts 5, that is, the bolts 5 pass through the rotating shaft 4 and are screwed into the bolt hole 3a1. The attached drawings of the specification show that there are two bolts 5, but the number of bolts 5 can be adjusted to one or three depending on the actual situation.
[0026] The blade section 3b is a long, strip-shaped piece with two cutting lines 3c. These cutting lines 3c transition into the upper and lower blade surfaces via a cutting surface 3d. This blade 3, in conjunction with the motor 2 in both forward and reverse rotation, allows for two-cut removal of the fruit pit: first, a 90° cut, then a full rotation in the opposite direction. This adjusts the separation line between the pit and the pulp from the half-cut surface of the fruit to the interior, reducing the likelihood of the pulp splitting. The double-edged structure also facilitates the separation of the pulp from the pit.
Claims
1. An electric rotary cutter for shelling, characterized in that, The device includes a tool holder (1), a motor (2), and a blade (3). A rotating shaft (4) is rotatably connected to the tool holder (1). The housing of the motor (2) is fixedly connected to the tool holder (1). The main shaft of the motor (2) is connected to the rotating shaft (4) through a reduction gear set. The blade (3) includes a tool holder part (3a) and an arc-shaped blade part (3b) fixedly connected to the tool holder part (3a). A positioning groove (4a) is provided on the rotating shaft (4). The tool holder part (3a) is embedded in the positioning groove (4a). The tool holder part (3a) and the rotating shaft (4) are fixedly connected by bolts (5).
2. The electric rotary cutter for core removal according to claim 1, characterized in that, The tool holder (1) includes two vertical column parts (1a) and a crossbeam part (1b) connecting the two vertical column parts (1a). The tool holder (1) forms a space for blade installation and rotation. The two ends of the rotating shaft (4) are connected to the two vertical column parts (1a) one by one through bearings.
3. The electric rotary cutter for core removal according to claim 1 or 2, characterized in that, The blade holder (3a) is rectangular, and the two ends of the blade (3b) are connected to the two ends of the blade holder (3a) by welding.
4. The electric rotary cutter for core removal according to claim 1 or 2, characterized in that, The tool holder (3a) has a bolt hole (3a1) and the bolt (5) passes through the rotating shaft (4) and is screwed into the bolt hole (3a1).
5. The electric rotary cutter for core removal according to claim 4, characterized in that, The number of bolts (5) is 1, 2 or 3.
6. The electric rotary cutter for core removal according to claim 1 or 2, characterized in that, The blade part (3b) is a long strip-shaped piece with two cutting lines (3c) on it. The cutting lines (3c) are connected to the upper and lower plate surfaces by a cutting surface (3d).