Mango peeling and pitting machine

CN224891763UActive Publication Date: 2026-10-27XINXIANG LEADING LIGHT IND MASCH CO LTD
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Patent Information

Application Number
CN202522626200.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-11
Publication Date
2026-10-27
Estimated Expiration
2035-12-11

AI Technical Summary

Technical Problem

[0002]在芒果果肉加工行业中,去皮去核是影响生产效率和产品得率的关键环节;目前普遍采用的人工操作方式,不仅劳动强度大、效率低下,而且存在卫生隐患;虽然市场上存在一些机械化设备,但大多功能单一,难以兼顾去皮与去核工序;常见的设备在去核时,往往无法精准贴合芒果果核的不规则形状,导致果肉残留过多或果核去除不彻底,造成原料浪费;此外,传统去核刀具缺乏自适应调节能力,对不同品种或成熟度芒果的适应性较差,容易导致切割不到位或过度损伤果肉,影响成品品质;这些技术局限性严重制约了芒果加工产业的规模化发展

Benefits of technology

本实用新型通过设置在竖杆框内的定位刀和两侧切肉刀的协同结构,利用定位刀精准切入芒果顶端实现果核定位,配合具有横向刀片和纵向刀片的切肉刀沿果核轮廓进行三维切割,实现了对芒果果核的精准包络式切除,有效解决了传统去核方式果肉残留多或去核不彻底的问题,显著提高了果肉得率。

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Abstract

The utility model discloses a kind of mango peeling and pitting machines, relate to mango processing technical field.The utility model includes pedestal, peeling assembly and meat cutting assembly, meat cutting assembly is realized kernel accurate positioning by the positioning knife in vertical pole frame, and three-dimensional cutting is carried out along kernel contour in cooperation with the meat cutting knife with lateral blade and longitudinal blade on both sides;Peeling assembly is completed by the peeling knife of spring compression and rotary mechanism cooperation peeling.The utility model realizes the continuous automation processing of mango peeling and pitting, through the synergistic effect of positioning cutting and self-adapting peeling, effectively solve the technical problem that traditional mode pulp is left more, pitting is not thorough, significantly improve pulp yield and processing efficiency.
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Description

Technical Field

[0001] This utility model belongs to the field of mango processing technology, and in particular relates to a mango peeling and pitting machine. Background Technology

[0002] In the mango pulp processing industry, peeling and pitting are crucial steps affecting production efficiency and product yield. Currently, the commonly used manual methods are not only labor-intensive and inefficient, but also pose hygiene risks. Although some mechanized equipment exists on the market, most have limited functions and cannot handle both peeling and pitting simultaneously. Common pitting equipment often fails to precisely conform to the irregular shape of the mango pit, resulting in excessive pulp residue or incomplete pit removal, leading to raw material waste. Furthermore, traditional pitting blades lack self-adjusting capabilities, exhibiting poor adaptability to different mango varieties or ripeness levels, easily causing incomplete cutting or excessive damage to the pulp, affecting the quality of the finished product. These technological limitations severely restrict the large-scale development of the mango processing industry.

[0003] To address this issue, we provide a mango peeling and pitting machine to solve the problems mentioned above. Utility Model Content

[0004] The purpose of this invention is to provide a mango peeling and pitting machine. A vertical frame is installed on a base, with a positioning blade vertically sliding between the two vertical rods. A peeling component is installed on one side of the vertical frame, and a meat-cutting blade is installed on each side of the positioning blade. The mango is placed below the positioning blade, and the positioning blade cuts into the top of the mango. The mango is rotated, causing the peeling component to peel the mango. After peeling, the meat-cutting blades are moved downwards, so that the cutting edge of the longitudinal blade of the meat-cutting blade is in contact with the mango pit to cut the flesh. The cutting edge of the transverse blade, perpendicular to the longitudinal blade, is also in contact with the mango pit and moves downwards. When the two meat-cutting blades reach the bottom of the mango, the transverse blades on both sides cut off the flesh on both sides of the mango pit, achieving the technical effect of separating the pit from the flesh.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a mango peeling and pitting machine, comprising a base, a peeling assembly, and a meat-cutting assembly. The meat-cutting assembly includes a vertical rod frame, a positioning blade, and two meat-cutting blades. The vertical rod frame includes two vertical rods and two frame plates. The two vertical rods are positioned between the upper and lower frame plates, with their upper and lower ends respectively fixedly connected to one end of the surface of a frame plate. A round tube sleeve is fixedly installed in the middle section of the lower frame plate, and the lower end of the round tube sleeve is fixedly installed on the upper surface of the base. The blade of the positioning blade is perpendicular to the horizontal plane. A rotating disk is fixed on the upper end face, and a lower pressure plate is rotatably mounted on the upper end face of the rotating disk. The two side plates of the lower pressure plate are slidably sleeved through the outer sides of the two vertical rods. Two meat cutting knives are respectively mounted on both sides of the positioning knife. The meat cutting knife includes a transverse blade and a longitudinal blade. The transverse blade is attached to the side of the positioning knife. The upper side of the longitudinal blade is vertically fixed to the middle section of the side of the transverse blade away from the positioning knife. The lower side of the longitudinal blade is rounded on the side of the positioning knife. The peeling component is mounted on the base.

[0006] A further feature of this invention is that a rotating motor is installed inside the platform, the output end of the rotating motor passes through the upper end surface of the platform, a fruit-fixing stake is fixedly installed on the upper end surface of the output end of the rotating motor, a set of fixing tags is fixedly installed on the upper end surface of the fruit-fixing stake, and a round tube sleeve is fitted on the outside of the fruit-fixing stake.

[0007] A further feature of this invention is that a top cutter slide plug is rotatably installed at the lower end of the side of the longitudinal blade away from the transverse blade. A slide plug tube is slidably sleeved on the outer side of the top cutter slide plug. A top cutter spring is sleeved inside the slide plug tube. The two ends of the top cutter spring are respectively fixedly connected to the inner top surface of the slide plug tube and the end face of the top cutter slide plug. A horizontal roller is rotatably installed at the end of the slide plug tube away from the top cutter slide plug. A ring rail is provided between the two vertical rods. The two sides of the ring rail are slidably sleeved on the outer side of the vertical rods. The wheel surfaces of the horizontal rollers at one end of the two slide plug tubes are rolled and embedded in the inner wall groove of the ring rail.

[0008] A further feature of this invention is that a downward pressure spring is fixedly connected to the upper end face of the lower pressure plate, and the upper end of the downward pressure spring is fixedly connected to the lower end face of the upper frame plate.

[0009] A further feature of this invention is that a ring rail threaded sleeve is fixedly provided on one side of the outer wall of the ring rail, and a ring rail lifting screw is rotatably installed on the upper end face of the platform. The lower end of the ring rail lifting screw is connected to the motor drive, and the ring rail lifting screw is threadedly engaged in the ring rail threaded sleeve.

[0010] A further feature of this invention is that the peeling assembly includes a horizontal arm, a peeling knife, and a horizontal arm lifting screw. A side plate frame is fixedly provided on one side of the base. A horizontal arm groove is opened through the plate surface of the side plate frame. The horizontal arm is vertically slidably sleeved in the horizontal arm groove. The horizontal arm lifting screw is vertically arranged in the side plate frame. One end of the horizontal arm lifting screw is connected to the output end of the motor for transmission. A horizontal arm threaded sleeve is fixedly provided at the end of the horizontal arm that extends through the horizontal arm groove and toward the side plate frame. The horizontal arm threaded sleeve is threadedly engaged and sleeved on the outside of the horizontal arm lifting screw. The peeling knife is arranged on the side of the horizontal arm near the vertical rod frame.

[0011] A further feature of this invention is that a knife holder is fixedly mounted on the end face of the peeler near the cross arm, a knife holder tube is slidably sleeved on the outside of the knife holder, a side-top spring is sleeved inside the knife holder tube, and the two ends of the side-top spring are respectively fixedly connected to the inner bottom surface of the knife holder tube and the end face of the knife holder. A cross arm sliding sleeve is fixedly mounted on the end of the knife holder tube away from the peeler, and the cross arm sliding sleeve is slidably sleeved on the outside of the cross arm. A side-top bolt is threadedly and through-sleeved on the side of the cross arm sliding sleeve away from the knife holder tube, and the end face of the side-top bolt abuts against the side of the cross arm.

[0012] This utility model has the following beneficial effects: This invention utilizes a synergistic structure of a positioning knife set within a vertical frame and two side-mounted cutting knives. The positioning knife precisely cuts into the top of the mango to locate the pit, while the cutting knives, equipped with horizontal and vertical blades, perform three-dimensional cutting along the pit's contour. This achieves precise enveloping removal of the mango pit, effectively solving the problems of excessive pulp residue or incomplete pit removal in traditional methods, and significantly improving the pulp yield.

[0013] This invention integrates the peeling and meat-cutting components on the same workbench. After the fruit is positioned by the positioning knife, the peeling and pitting operations are performed sequentially, realizing continuous processing from peeling to pitting. This greatly improves production efficiency while ensuring the consistency of processing operations and hygiene standards. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of a mango peeling and pitting machine.

[0016] Figure 2 This is a schematic diagram of the meat-cutting component.

[0017] Figure 3 This is a schematic diagram of the structure of a meat cleaver and a positioning knife.

[0018] Figure 4 This is a top view of the meat cleaver and the ring rail.

[0019] Figure 5 This is a top view of the pedestal and the rotating motor.

[0020] Figure 6 This is a schematic diagram of the structure of the base and the peeling assembly.

[0021] Figure 7 This is a side sectional view of the peeling component.

[0022] The attached diagram lists the components represented by each number as follows: 1-Base, 101-Rotating motor, 101a-Fruit anchor, 101a-1-Fixing tag, 102-Side plate frame, 102a-Cross arm groove, 2-Peeling assembly, 201-Cross arm, 201a-Cross arm threaded sleeve, 202-Peeling knife, 202a-Knife holder, 202a-1-Knife holder tube, 202a-2-Side top spring, 202a-3-Cross arm sliding sleeve, 202a-4-Side top bolt, 203-Cross arm lifting screw, 3-Meat cutting assembly, 301-Vertical rod frame, 301a- Vertical rod, 301b-frame plate, 301b-1-round tube sleeve, 302-positioning knife, 302a-rotating disk, 302b-lower pressure plate, 302b-1-lower pressure spring, 303-meat slicing knife, 303a-transverse blade, 303b-longitudinal blade, 303b-1-top knife slide plug, 303b-2-slide plug tube, 303b-3-top knife spring, 303b-4-horizontal roller, 303c-ring rail, 303c-1-ring rail threaded sleeve, 303c-2-ring rail lifting screw. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example 1

[0024] Please see Figures 1 to 7This utility model relates to a mango peeling and pitting machine, comprising a base 1, a peeling assembly 2, and a meat cutting assembly 3. The meat cutting assembly 3 includes a vertical frame 301, a positioning blade 302, and two meat cutting blades 303. The vertical frame 301 includes two vertical rods 301a and two frame strips 301b. The two vertical rods 301a are disposed between the upper and lower frame strips 301b, and the upper and lower ends of the vertical rods 301a are respectively fixed to one end of the surface of one frame strip 301b. A circular tube sleeve 301b-1 is fixedly installed in the middle section of the lower frame plate 301b. The lower end face of the circular tube sleeve 301b-1 is fixedly installed on the upper end face of the base 1. The blade of the positioning knife 302 is perpendicular to the horizontal plane. A rotating disk 302a is fixedly installed on the upper end face of the positioning knife 302. A lower pressure plate 302b is rotatably installed on the upper end face of the rotating disk 302a. The two side plates of the lower pressure plate 302b are slidably sleeved through and connected to the outer sides of the two vertical rods 301a. Two meat-cutting knives 303 are respectively set on both sides of the positioning knife 302. The meat-cutting knife 303 includes a transverse blade 303a and a longitudinal blade 303b. The transverse blade 303a is attached to the side of the positioning knife 302. The upper side of the longitudinal blade 303b is vertically fixed to the middle section of the side of the transverse blade 303a away from the positioning knife 302. The lower end face of the longitudinal blade 303b is a rounded blade surface on the side near the positioning knife 302. The peeling component 2 is set above the base 1. This utility model, through the cooperative structure of the positioning knife 302 set in the vertical frame 301 and the two meat-cutting knives 303 on both sides, uses the positioning knife 302 to cut into the top of the mango to locate the pit. With the help of the meat-cutting knife with the transverse blade 303a and the longitudinal blade 303b, it performs three-dimensional cutting along the contour of the pit, realizing precise enveloping removal of the mango pit, effectively solving the problem of excessive pulp residue or incomplete pit removal in traditional pitting methods.

[0025] Specifically, a rotating motor 101 is installed inside the base 1. The output end of the rotating motor 101 passes through the upper end surface of the base 1. A fruit fixing stake 101a is fixedly installed on the upper end surface of the output end of the rotating motor 101. A set of fixing tags 101a-1 is fixedly installed on the upper end surface of the fruit fixing stake 101a. A round tube sleeve 301b-1 is fitted on the outside of the fruit fixing stake 101a. The fruit fixing stake 101a is reliably fixed by the fixing tags 101a-1 piercing into the bottom of the mango. The rotating motor 101 drives the mango to rotate, providing the necessary conditions for the peeling operation.

[0026] Furthermore, a top cutter slide plug 303b-1 is rotatably mounted on the lower end of the side of the longitudinal blade 303b away from the transverse blade 303a. A slide plug tube 303b-2 is slidably sleeved on the outer side of the top cutter slide plug 303b-1. A top cutter spring 303b-3 is sleeved inside the slide plug tube 303b-2. The two ends of the top cutter spring 303b-3 are respectively fixedly connected to the inner top surface of the slide plug tube 303b-2 and the end face of the top cutter slide plug 303b-1. A horizontal roller 303b-4 is horizontally rotatably mounted on the end of the slide plug tube 303b-2 away from the top cutter slide plug 303b-1. A ring rail 303c is provided between the two vertical rods 301a. The two sides of the ring rail 303c are slidably sleeved on the outer side of the vertical rods 301a. The wheel surfaces of the horizontal rollers 303b-4 at one end of the two slide plug tubes 303b-2 are... All components are rolled and embedded in the inner wall groove of the ring rail 303c. During the peeling operation, the rotating motor 101 drives the mango to rotate, and the peeling component 2 peels the mango. At this time, the positioning blade 302 rotates synchronously with the rotation of the mango, and the meat cutting blades 303 on both sides rotate with the rotation of the positioning blade 302, so that the horizontal rollers 303b-4 roll in the ring rail 303c, ensuring that the meat cutting blades 303 can rotate synchronously with the positioning blades 302, so that the horizontal blades 303a on one side of the meat cutting blades 303 can always be in contact with the side of the positioning blades 302. When separating the pulp and the pit, the ring rail 303c moves downward, and the longitudinal blades 303b move downward close to the pit under the action of the top blade spring 303b-3, so that the blades of the horizontal blades 303a move downward close to the surface of the pit, separating the pit from the pulp.

[0027] Furthermore, a pressure spring 302b-1 is fixedly connected to the upper end face of the pressure plate 302b, and the upper end of the pressure spring 302b-1 is fixedly connected to the lower end face of the upper frame plate 301b; the pressure spring 302b-1 provides a constant downward force for the positioning knife 302, ensuring that it can stably cut into the top of the mango and maintain the depth.

[0028] Furthermore, a ring rail threaded sleeve 303c-1 is fixedly provided on one side of the outer wall of the ring rail 303c, and a ring rail lifting screw 303c-2 is rotatably installed on the upper end face of the base 1. The lower end of the ring rail lifting screw 303c-2 is connected to the motor drive, and the ring rail lifting screw 303c-2 is threadedly engaged in the ring rail threaded sleeve 303c-1. The ring rail lifting screw 303c-2 is driven by the motor to make the ring rail 303c move downward, and the ring rail 303c drives the meat cutting blades 303 on both sides to move downward, so that the meat cutting blades 303 on both sides separate the flesh on both sides of the fruit pit.

[0029] Furthermore, the peeling assembly 2 includes a cross arm 201, a peeling knife 202, and a cross arm lifting screw 203. A side plate frame 102 is fixedly provided on one side of the base 1. A cross arm groove 102a is formed through the surface of the side plate frame 102. The cross arm 201 is vertically slidably sleeved in the cross arm groove 102a. The cross arm lifting screw 203 is vertically arranged in the side plate frame 102. One end of the cross arm lifting screw 203 is connected to the output end of the motor. The cross arm 201 passes through the cross arm groove 102a. A cross arm threaded sleeve 201a is fixed at one end of the side plate frame 102. The cross arm threaded sleeve 201a is threadedly engaged with the outside of the cross arm lifting screw 203. The peeling knife 202 is set on the side of the cross arm 201 near the vertical rod frame 301. The cross arm lifting screw 203 drives the cross arm 201 with the peeling knife 202 to make precise vertical feed along the surface of the mango. In coordination with the rotation of the mango, it realizes efficient and uniform peeling operation with a high degree of automation.

[0030] Furthermore, a blade holder 202a is fixedly mounted on one end face of the peeler 202 near the cross arm 201. A blade holder tube 202a-1 is slidably sleeved on the outside of the blade holder 202a. A side spring 202a-2 is sleeved inside the blade holder tube 202a-1. The two ends of the side spring 202a-2 are respectively fixedly connected to the inner bottom surface of the blade holder tube 202a-1 and the end face of the blade holder 202a. A cross arm sliding sleeve 202a-3 is fixedly mounted on the end of the blade holder tube 202a-1 away from the peeler 202. The 202a-3 is slidably sleeved on the outside of the cross arm 201. The side of the cross arm sliding sleeve 202a-3 away from the knife holder tube 202a-1 is threaded and threaded through with a side top bolt 202a-4. The end face of the side top bolt 202a-4 rests against the side of the cross arm 201. The side top spring 202a-2 ensures that the peeler 202 always contacts the mango surface with appropriate pressure. The side top bolt 202a-4 can be used to fine-tune the initial position to adapt to different mango shapes, ensuring clean peeling without wasting fruit pulp.

[0031] The operation process in this embodiment is as follows: First, the bottom of the mango is fixed to the fruit anchor 101a, and the fixing stick 101a-1 is inserted into the flesh for reliable fixation. The positioning knife 302, under the action of the downward spring 302b-1, stably cuts into the top of the mango, reaching the pit, achieving precise positioning. The rotating motor 101 is started to rotate the mango at a uniform speed, while the horizontal lifting screw 203 drives the peeling assembly 2 to descend. The peeling knife 202, under the action of the side spring 202a-2, remains in contact with the fruit surface to complete circumferential peeling. After peeling, the circular rail lifting screw... Rod 303c-2 drives the ring rail 303c to descend at a constant speed. Under the action of the top blade spring 303b-3, the longitudinal blade 303b always keeps close to the outer surface of the pit to perform contour cutting. The transverse blade 303a descends accordingly to completely separate the pulp on both sides of the pit. When the ring rail 303c descends to the bottom stroke, the pit is completely separated from the surrounding pulp. At this time, the positioning blade 302 lifts up with the pit to reset, and the two halves of pulp fall off naturally. Finally, all the actuators automatically reset, ready to enter the next processing cycle.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A mango peeling and pitting machine, comprising a base (1), a peeling component (2), and a flesh-cutting component (3), characterized in that: The meat cutting assembly (3) includes a vertical rod frame (301), a positioning knife (302), and two meat cutting knives (303). The vertical rod frame (301) includes two vertical rods (301a) and two frame plates (301b). The two vertical rods (301a) are arranged between the upper and lower frame plates (301b). The upper and lower ends of the vertical rods (301a) are respectively fixedly connected to one end of the plate surface of a frame plate (301b). A round tube sleeve (301b-1) is fixedly provided in the middle section of the lower frame plate (301b). The lower end face of the round tube sleeve (301b-1) is fixedly installed on the upper end face of the base (1). The blade of the positioning knife (302) is perpendicular to the horizontal plane. A rotating disk (302a) is fixedly provided on the upper end face of the positioning knife (302). A lower pressure plate (302b) is rotatably mounted on the upper end face of the disc (302a). The two side plates of the lower pressure plate (302b) are slidably sleeved on the outer sides of the two vertical rods (301a). Two meat slicing knives (303) are respectively mounted on both sides of the positioning knife (302). The meat slicing knife (303) includes a transverse blade (303a) and a longitudinal blade (303b). The transverse blade (303a) is attached to the side of the positioning knife (302). The upper side of the longitudinal blade (303b) is vertically fixed to the middle section of the side of the transverse blade (303a) away from the positioning knife (302). The lower end face of the longitudinal blade (303b) near the positioning knife (302) is a rounded blade. The peeling assembly (2) is mounted above the base (1).

2. The mango peeling and pitting machine according to claim 1, characterized in that: A rotating motor (101) is installed inside the pedestal (1). The output end of the rotating motor (101) passes through the upper end face of the pedestal (1). A fruit-fixing stake (101a) is fixedly installed on the upper end face of the output end of the rotating motor (101). A set of fixing tags (101a-1) is fixedly installed on the upper end face of the fruit-fixing stake (101a). The round tube sleeve (301b-1) is sleeved on the outside of the fruit-fixing stake (101a).

3. A mango peeling and pitting machine according to claim 2, characterized in that: A top cutter slide plug (303b-1) is rotatably mounted on the lower end of the side of the longitudinal blade (303b) away from the transverse blade (303a). A slide plug tube (303b-2) is slidably sleeved on the outer side of the top cutter slide plug (303b-1). A top cutter spring (303b-3) is sleeved inside the slide plug tube (303b-2). The two ends of the top cutter spring (303b-3) are respectively fixedly connected to the inner top surface of the slide plug tube (303b-2) and the end of the top cutter slide plug (303b-1). On the other hand, a horizontal roller (303b-4) is horizontally rotatably mounted on one end of the sliding plug tube (303b-2) away from the top cutter sliding plug (303b-1). A ring rail (303c) is provided between the two vertical rods (301a). The two sides of the ring rail (303c) are respectively slidably sleeved on the outside of the vertical rod (301a). The wheel surfaces of the horizontal rollers (303b-4) at one end of the sliding plug tubes (303b-2) on both sides are rolled and embedded in the inner wall groove of the ring rail (303c).

4. A mango peeling and pitting machine according to claim 3, characterized in that: A compression spring (302b-1) is fixedly connected to the upper end face of the pressure plate (302b), and the upper end of the compression spring (302b-1) is fixedly connected to the lower end face of the upper frame plate (301b).

5. A mango peeling and pitting machine according to claim 4, characterized in that: A ring rail threaded sleeve (303c-1) is fixed on one side of the outer wall of the ring rail (303c). A ring rail lifting screw (303c-2) is rotatably installed on the upper end face of the platform (1). The lower end of the ring rail lifting screw (303c-2) is connected to the motor drive. The ring rail lifting screw (303c-2) is threadedly engaged in the ring rail threaded sleeve (303c-1).

6. A mango peeling and pitting machine according to claim 1, characterized in that: The peeling assembly (2) includes a cross arm (201), a peeling knife (202), and a cross arm lifting screw (203). A side plate frame (102) is fixedly provided on one side of the base (1). A cross arm groove (102a) is opened through the plate surface of the side plate frame (102). The cross arm (201) is vertically slidably sleeved in the cross arm groove (102a). The cross arm lifting screw (203) is vertically arranged in the side plate frame (102). One end of the cross arm lifting screw (203) is connected to the output end of the motor. A cross arm threaded sleeve (201a) is fixedly provided at one end of the cross arm (201) extending through the cross arm groove (102a) towards the side plate frame (102). The cross arm threaded sleeve (201a) is threadedly sleeved on the outside of the cross arm lifting screw (203). The peeling knife (202) is arranged on the side of the cross arm (201) near the vertical rod frame (301).

7. A mango peeling and pitting machine according to claim 6, characterized in that: The peeler (202) has a blade holder (202a) fixedly mounted on one end face near the cross arm (201). A blade holder tube (202a-1) is slidably sleeved on the outside of the blade holder (202a). A side spring (202a-2) is sleeved inside the blade holder tube (202a-1). The two ends of the side spring (202a-2) are respectively fixedly connected to the inner bottom surface of the blade holder tube (202a-1) and the end face of the blade holder (202a). A cross arm sleeve (202a-3) is fixedly provided at one end of the seat tube (202a-1) away from the peeler (202). The cross arm sleeve (202a-3) is slidably sleeved on the outside of the cross arm (201). A side top bolt (202a-4) is threadedly and through-sleeved on the side of the cross arm sleeve (202a-3) away from the knife seat tube (202a-1). The end face of the side top bolt (202a-4) abuts against the side of the cross arm (201).