Automatic fruit stoning machine

Abstract

The utility model provides an automatic fruit stoning machine, and belongs to the technical field of fruit processing machinery. The automatic coring machine solves the problem that an existing automatic coring machine is large in pulp quantity on the periphery of a kernel. The automatic fruit coring machine comprises a rack, a conveying device, a fruit pressing device, a coring device and a control circuit, the tool apron and the lifting seat are connected through a third guide assembly and a third driving assembly with a horizontally-arranged guide rail, the kernel digging device can horizontally move left and right or front and back, and the third driving assembly comprises a third motor; the third motor is electrically connected with the control circuit, and the control circuit can control the third motor to operate according to the deviation distance value between the kernel of the fruit placed on the fruit carrying cup and the center position of the fruit carrying cup so that the kernel digging device can move horizontally. The position of the coring cutter in the automatic fruit coring machine can be adaptively adjusted according to the characteristics of fruits on the corresponding fruit carrying cup, the position consistency of the center face of the coring cutter and the long axis of a kernel fitting ellipse is improved, and the pulp amount of the outer ring of the kernel can be reduced under the condition that the kernel removing completeness is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of fruit processing machinery technology, and in particular relates to an automatic fruit pitting machine. Background Technology

[0002] In the production of canned fruit, removing the pits is a crucial step in ensuring product quality. Traditional manual pitting methods suffer from low efficiency and high hygiene risks; therefore, various mechanized pitting devices have been developed. For example, an automatic pitting machine (application number 202111499505.3) described in Chinese patent literature includes a frame, a conveying mechanism, a lower pressing mechanism, an upper pressing mechanism, and a pitting mechanism. While using this automatic pitting machine improves processing efficiency, it also has some drawbacks.

[0003] Fruits not only vary in size but also exhibit inconsistent pit shape and position. For example, a halved apple or peach has a cross-section that approximates a circle, while the pit approximates an ellipse. The major axis of the ellipse deviates from the radial line of the circle, which is an inherent characteristic. Generally, for fruits where one side is larger than the other, the greater the deviation of the ellipse's major axis from the radial line. Furthermore, the conveyor mechanism, due to inertia and rotational precision issues, also introduces errors in the fruit's stopping position during operation.

[0004] In summary, in actual production, not only is it necessary to strictly classify the halved fruits, but also, in order to improve the integrity of pit removal, the size of the semi-elliptical or hemispherical shape formed by the rotary cutter is significantly larger than the size of the fitted elliptical shape mentioned above. That is, more fruit pulp is left around the pit, thereby reducing the weight and thickness of the fruit pulp. Summary of the Invention

[0005] This utility model proposes an automatic fruit pitting machine. The technical problem to be solved by this utility model is how to propose an automatic fruit pitting machine that can reduce the amount of fruit pulp around the pit while ensuring the integrity of the pit removal.

[0006] The technical problem to be solved by this utility model can be achieved through the following technical solution: An automatic fruit pitting machine includes a frame, a conveying device, a fruit pressing device, a pitting device, and a control circuit; the conveying device includes a conveying plate and a fruit-carrying cup for placing fruit, the fruit-carrying cup is mounted on the conveying plate, the conveying plate is connected to the frame through a first guide assembly, the first guide assembly includes a guide rail with a horizontal guide section, the conveying plate can move horizontally left and right, and moving the conveying plate can position the fruit-carrying cup directly below or to one side of the fruit pressing device; the fruit pressing device includes a lifting seat and a pressing plate, the pressing plate is located above the fruit-carrying cup, the pressing plate is mounted on the lifting seat, the lifting seat is connected to the frame through a second guide assembly and a first drive assembly, the second guide assembly includes a vertically arranged guide column, the lifting seat can move up and down. The first drive assembly includes a first motor or cylinder; when the first drive assembly drives the lifting seat to move downward, the lower surface of the pressure plate can contact the cut surface of the fruit placed on the fruit-bearing cup; the pitting device includes a knife holder and a pitting knife, and a second drive assembly connected to the pitting knife and used to drive the pitting knife to rotate is installed on the knife holder, the second drive assembly including a second motor; the knife holder and the lifting seat are connected through a third guide assembly and a third drive assembly, the third guide assembly including a horizontally arranged guide rail, the pitting device can move horizontally left and right or back and forth, the third drive assembly including a third motor; the third motor is electrically connected to a control circuit, the control circuit can control the operation of the third motor to make the pitting device move horizontally according to the deviation distance between the pit of the fruit placed on the fruit-bearing cup and the center position of the fruit-bearing cup.

[0007] The conveyor plate of the automatic fruit pitting machine can be moved manually or by a cylinder. The fruit placement direction is determined by the horizontal movement direction of the pitting device. Taking the pitting device's ability to move horizontally left and right as an example, the cut surface of the fruit placed on the fruit-bearing cup should face upwards, and the major axis of the pit's fitted ellipse should be perpendicular to the horizontal movement direction of the pitting device. The distance between the pit and the center of the fruit-bearing cup can be determined based on the operator's experience or measurement. Preferably, the conveyor plate is connected to a chain driven by a motor, and the distance between the pit and the center of the fruit-bearing cup is determined by analysis and measurement based on image recognition technology. The host computer inputs the value into the control circuit. Before the second motor drives the pitting blade to rotate, the third motor is controlled to move the pitting device horizontally. The movement stroke and direction of the pitting device are adapted to the distance and direction between the major axis of the pit's fitted ellipse and the center of the fruit-bearing cup, significantly reducing the deviation between the center plane of the pitting blade and the major axis of the pit's fitted ellipse, and improving the fit between the pitting blade's trajectory and the pit.

[0008] Compared to existing technologies, the position of the pitting blade in this automatic fruit pitting machine can be adaptively adjusted according to the characteristics of the fruit on the corresponding fruit-bearing cup. This significantly improves the consistency between the center plane of the pitting blade and the major axis of the fitted ellipse of the pit, thus allowing the arc-shaped opening width of the pitting blade to match the minor axis of the fitted ellipse of the pit. Furthermore, compared to existing technologies, the arc-shaped opening width of the pitting blade in this automatic fruit pitting machine is smaller. This automatic fruit pitting machine reduces the amount of fruit pulp around the pit while ensuring complete pit removal, thereby increasing fruit pulp weight, thickness, and grade, ultimately reducing waste and increasing profits for fruit processing enterprises.

[0009] In the aforementioned automatic fruit pitting machine, the cutter holder includes a translational cutter holder and a lifting cutter holder. The translational cutter holder and the lifting cutter holder are connected by a third guide component and a third drive component. The lifting cutter holder and the translational cutter holder are connected by a fourth guide component and a fourth drive component. The fourth guide component includes a vertically arranged guide rail, and the fourth drive component includes a fourth motor. The fourth drive component can drive the lifting cutter holder to move up and down. The second drive component is installed on the lifting cutter holder.

[0010] As a preferred method, based on image recognition technology, the fruit pit is analyzed and measured to determine that it is fitted to an ellipse. The control circuit can control the operation of the fourth motor to move the pitting knife up and down according to the major axis value of the fitted ellipse. That is, the larger the fruit pit, the deeper the pitting knife cuts into the fruit; the smaller the fruit pit, the shallower the pitting knife cuts into the fruit, thereby reducing the amount of fruit flesh around the pit.

[0011] In the aforementioned automatic fruit pitting machine, the housing of the third motor is mounted on the lifting seat, and the rotating shaft of the third motor is connected to the translational cutter holder through a lead screw and nut assembly or a gear and rack assembly; the housing of the fourth motor is mounted on the translational cutter holder, and the rotating shaft of the fourth motor is connected to the lifting cutter holder through a lead screw and nut assembly or a gear and rack assembly.

[0012] In the aforementioned automatic fruit pitting machine, a cutter shaft is rotatably connected to the lifting cutter seat. The axis of the cutter shaft is parallel to the guiding direction of the third guide component, and the pitting cutter is fixed to the cutter shaft by bolts.

[0013] In the aforementioned automatic fruit pitting machine, the cutting edge of the pitting blade is semi-elliptical, and the short axis of the semi-ellipse is arranged parallel to or coincides with the axis of the blade shaft.

[0014] In the aforementioned automatic fruit pitting machine, the pressure plate is fixedly installed on the translational cutter seat, or the pressure plate is directly fixed on the lifting seat. Attached Figure Description

[0015] Figure 1 This is a 3D structural diagram of an automatic fruit pitting machine.

[0016] Figure 2This is a partial structural diagram of an automatic fruit pitting machine loaded with fruit.

[0017] Figure 3 yes Figure 2 A schematic diagram of a local part of the structure.

[0018] Figure 4 and Figure 5 This is a schematic diagram showing the positional relationship between the pitting knife, the pit, and the fruit-bearing cup.

[0019] In the diagram, 1 is the frame; 2 is the conveying device; 2a is the conveying plate; 2b is the fruit-carrying cup; 3 is the fruit-pressing device; 3a is the lifting seat; 3b is the pressing plate; 4 is the pitting device; 4a is the translating knife holder; 4b is the lifting knife holder; 4c is the pitting knife; 4d is the fourth guide assembly; 4e is the fourth drive assembly; 4f is the knife shaft; 4g is the second motor; 5 is the first guide assembly; 6 is the chain drive assembly; 7 is the second guide assembly; 8 is the first drive assembly; 9 is the third guide assembly; 10 is the third drive assembly; 11 is the fitted ellipse; 101 is the pulp; and 102 is the pit. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] like Figures 1 to 3 As shown, an automatic fruit pitting machine includes a frame 1, a conveying device 2, a fruit pressing device 3, a pitting device 4, and a control circuit.

[0026] The conveying device 2 includes a conveyor plate 2a and fruit-holding cups 2b for placing fruit. The fruit-holding cups 2b are mounted on the conveyor plate 2a. The conveyor plate 2a is connected to the frame 1 via a first guide assembly 5, which includes a guide rail with a horizontal guide section. The conveyor plate 2a can move horizontally left and right, and moving the conveyor plate 2a allows the fruit-holding cups 2b to be positioned directly below or to one side of the fruit-pressing device 3. The accompanying drawings show that there are multiple conveyor plates 2a, each with multiple fruit-holding cups 2b mounted on it. The multiple fruit-holding cups 2b are arranged in an orderly manner along the longitudinal line of the conveyor plate 2a. A chain drive assembly 6 is mounted on the frame 1, and the multiple conveyor plates 2a are arranged in an orderly manner along the chain.

[0027] The fruit pressing device 3 includes a lifting seat 3a and a pressing plate 3b. The lifting seat 3a is elongated, and the pressing plate 3b is located above the fruit-bearing cup 2b and below the lifting seat 3a. The pressing plate 3b is mounted on the lifting seat 3a. The lifting seat 3a is connected to the frame 1 via a second guide assembly 7 and a first drive assembly 8. The second guide assembly 7 includes vertically arranged guide columns. The attached drawings show that there are four guide columns, but the number can be adjusted according to actual conditions. The first drive assembly 8 includes a first motor. The housing of the first motor is mounted on the frame 1, and the shaft of the first motor is connected to the lifting seat 3a via a cam-linkage structure. The lifting seat 3a moves flexibly and stably by being guided by the second guide assembly 7 and driven by the first drive assembly 8. When the first drive assembly 8 drives the lifting seat 3a downward, the lower surface of the pressing plate 3b can contact the cut surface of the fruit placed on the fruit-bearing cup 2b, thereby correcting the levelness of the fruit's cut surface and significantly reducing the possibility of fruit movement during subsequent pitting.

[0028] Depending on the actual situation, the aforementioned cam connecting rod structure can be replaced by a gear and rack structure, and the aforementioned first drive component 8 can also be replaced by a cylinder.

[0029] The number of pit-removing devices 4 is the same as the number of fruit-carrying cups 2b installed on a single conveyor plate 2a, and they are arranged in a one-to-one correspondence. Each pit-removing device 4 includes a cutter holder and a pit-removing cutter 4c. The cutter holder further includes a translating cutter holder 4a and a lifting cutter holder 4b. The translating cutter holder 4a is connected to the lifting seat 3a via a third guide assembly 9 and a third drive assembly 10. The third drive assembly 10 includes a third motor, the housing of which is mounted on the lifting seat 3a. The shaft of the third motor is connected to the translating cutter holder 4a via a lead screw and nut assembly or a gear and rack assembly. The third guide assembly 9 includes horizontally arranged guide rails. The attached drawings show four guide rails, but the number can be adjusted according to actual conditions. The attached drawings show the guide rails arranged in the left-right direction, thus the guiding direction of the third guide assembly 9 is the same as the horizontal movement of the conveyor plate 2a. This arrangement improves space utilization, allowing more pit-removing devices 4 to be arranged on a frame 1 of the same width. Of course, the guide rails can also be adjusted to be arranged in the front-back direction depending on actual conditions.

[0030] The pressure plate 3b is fixedly installed on the translational tool holder 4a, that is, the pressure plate 3b is installed on the lifting seat 3a through the translational tool holder 4a and the third guide assembly 9; of course, depending on the actual situation, the pressure plate 3b can also be directly fixed on the lifting seat 3a.

[0031] The lifting tool holder 4b and the translating tool holder 4a are connected by a fourth guide assembly 4d and a fourth drive assembly 4e. The fourth drive assembly 4e includes a fourth motor, the housing of which is mounted on the translating tool holder 4a. The shaft of the fourth motor is connected to the lifting tool holder 4b via a lead screw and nut assembly or a gear and rack assembly. The fourth guide assembly 4d includes vertically arranged guide rails. The accompanying drawings show two guide rails, but the number can be adjusted according to actual needs.

[0032] A cutter shaft 4f is rotatably connected to the lifting cutter holder 4b. The axis of the cutter shaft 4f is parallel to the guiding direction of the third guide assembly 9. The core-digging cutter 4c is fixed to the cutter shaft 4f by bolts. The cutting edge of the core-digging cutter 4c is semi-elliptical, and the minor axis of the semi-ellipse is parallel to or coincides with the axis of the cutter shaft 4f. A second drive assembly connected to the cutter shaft 4f is installed on the lifting cutter holder 4b. The second drive assembly includes a second motor 4g, and the rotation of the shaft of the second motor 4g drives the core-digging cutter 4c to rotate.

[0033] The automatic fruit pitting machine also includes a host computer with an image recognition system. The image recognition system includes industrial cameras and an image processing unit. The number of industrial cameras is the same as the number of fruit-carrying cups 2b installed on a conveyor plate 2a, and they are set one-to-one. The industrial cameras are located on the front side of the pitting device 4 and are mounted on the frame 1.

[0034] The image processing unit processes cross-sectional images of fruit placed on the fruit-bearing cup 2b captured by an industrial camera and extracts the boundary features between the pit 102 and the pulp 101 in the cross-section. The host computer performs ellipse fitting based on the extracted pit-pulse boundary feature data. The host computer transmits the fitted ellipse characteristic values ​​to the control circuit. These ellipse characteristic values ​​include the major axis of the fitted ellipse and the deviation distance between the major axis of the fitted ellipse and the center position of the fruit-bearing cup 2b. For example, a deviation value of 0 indicates overlap; a deviation value of +1 indicates that the major axis of the fitted ellipse is in front of the reference major axis of the set ellipse with a deviation of 1mm; and a deviation value of -1 indicates that the major axis of the fitted ellipse is behind the reference major axis of the set ellipse with a deviation of 1mm.

[0035] The second motor 4g, the third motor, and the fourth motor are all electrically connected to the control circuit. The control circuit can control the third motor to move the pitting device 4 horizontally based on the deviation distance between the fruit pit placed on the fruit-bearing cup 2b and the center position of the fruit-bearing cup 2b. The control circuit can also control the third motor to move the pitting knife 4c up and down based on the major axis value of the ellipse fitted by the fruit pit placed on the fruit-bearing cup 2b.

[0036] By describing the process of processing fruit using an automatic fruit pitting machine, the function and advantages of each component are further explained: First, the halved fruit is placed on the fruit-carrying cup 2b with the cut surface of the fruit facing upwards, and the long axis of the fruit pit, which fits an ellipse, is perpendicular to the horizontal movement direction of the pitting device 4.

[0037] Next, the chain drive assembly 6 moves the conveyor plate 2a, the fruit-carrying cup 2b, and the fruit sequentially to the area directly below the industrial camera and the pitting device 4. The industrial camera captures an image, thereby obtaining a cross-sectional image of the fruit placed on the fruit-carrying cup 2b. The image processing unit processes the cross-sectional image and extracts the features of the boundary between the pit and the flesh in the cross-section of the fruit. The host computer performs ellipse fitting based on the extracted features of the boundary between the pit and the flesh. For example, the major axis of the ellipse fitted for fruit No. 1 is 45mm, the minor axis is 25mm, and the deviation of the major axis from the center of the fruit-carrying cup 2b is +1; the major axis of the ellipse fitted for fruit No. 2 is 50mm, the minor axis is 30mm, and the deviation of the major axis from the center of the fruit-carrying cup 2b is -1.

[0038] Then, as Figure 4 and Figure 5 As shown, the control circuit controls the third motor of the pit-removing device 4 to move horizontally based on the deviation distance between the pit of the fruit placed on the fruit-carrying cup 2b and the center position of the fruit-carrying cup 2b. For example, if the pit-removing device 4 corresponding to fruit No. 1 moves forward by 1 mm, it means that the pit-removing device 4 moves 1 mm in the opposite direction to the movement of the fruit; if the pit-removing device 4 corresponding to fruit No. 2 moves backward by 1 mm, it means that the pit-removing device 4 moves 1 mm in the same direction as the movement of the fruit. Figure 4 and Figure 5 The dashed line X indicates the center line of the fruit cup 2b, and the dashed line Y indicates the major axis of the ellipse fitted by the fruit pit.

[0039] The control circuit adaptively adjusts the distance between the minor axis of the pitting blade 4c and the lower surface of the pressure plate 3b using the fitted ellipse's major axis value. For example, if the initial position of the pitting blade 4c in the pitting device 4 corresponding to fruit No. 1 is suitable for pitting fruits with a major axis of 55mm, then the control circuit controls the fourth motor in the pitting device 4 corresponding to fruit No. 1 to move the lifting blade seat 4b upward by the required distance, such as 5mm. Similarly, if the initial position of the pitting blade 4c in the pitting device 4 corresponding to fruit No. 2 is suitable for pitting fruits with a major axis of 45mm, then the control circuit controls the fourth motor in the pitting device 4 corresponding to fruit No. 2 to move the lifting blade seat 4b downward by the required distance, such as 3mm.

[0040] Next, the first drive assembly 8 is operated to move the lifting seat 3a and all the core-digging devices 4 downwards until the lower surface of the pressure plate 3b contacts the tangential surface of the water.

[0041] Next, the second motor 4g is controlled to drive the pit-removing blade 4c to rotate, thus separating the pit from the flesh.

[0042] Finally, the first drive component 8, the second motor 4g, the third motor and the fourth motor are manipulated to reset the corresponding components.

Claims

1. An automatic fruit pitting machine, comprising a frame (1), a conveying device (2), a fruit pressing device (3), a pitting device (4), and a control circuit; the conveying device (2) includes a conveying plate (2a) and a fruit-carrying cup (2b) for placing fruit, the fruit-carrying cup (2b) being mounted on the conveying plate (2a), the conveying plate (2a) being connected to the frame (1) via a first guide assembly (5), the first guide assembly (5) including a guide rail with a horizontal guide section, the conveying plate (2a) being able to move horizontally left and right, and moving the conveying plate (2a) enabling the fruit-carrying cup (2b) to be located directly below or to one side of the fruit pressing device (3); the fruit pressing device (3) includes a lifting seat (3a) and a pressing plate (3b), the pressing plate (3b) being located above the fruit-carrying cup (2b), pressing... The plate (3b) is mounted on the lifting seat (3a), which is connected to the frame (1) via a second guide assembly (7) and a first drive assembly (8). The second guide assembly (7) includes vertically arranged guide columns, and the lifting seat (3a) can move up and down. The first drive assembly (8) includes a first motor or cylinder. When the first drive assembly (8) drives the lifting seat (3a) to move downward, the lower surface of the pressure plate (3b) can contact the cut surface of the fruit placed on the fruit-bearing cup (2b). The pitting device (4) includes a knife holder and a pitting knife (4c). A second drive assembly is mounted on the knife holder and connected to the pitting knife (4c) for driving the pitting knife (4c) to rotate. The second drive assembly includes a second motor (4g). The cutter holder and the lifting seat (3a) are connected by the third guide component (9) and the third drive component (10). The third guide component (9) includes a horizontally set guide rail. The core-digging device (4) can move horizontally left and right or back and forth. The third drive component (10) includes a third motor. The third motor is electrically connected to the control circuit. The control circuit can control the operation of the third motor to make the core-digging device (4) move horizontally according to the deviation distance between the core of the fruit placed on the fruit-carrying cup (2b) and the center position of the fruit-carrying cup (2b).

2. The automatic fruit pitting machine according to claim 1, characterized in that, The tool holder includes a translational tool holder (4a) and a lifting tool holder (4b). The translational tool holder (4a) and the lifting tool holder (3a) are connected by a third guide assembly (9) and a third drive assembly (10). The lifting tool holder (4b) and the translational tool holder (4a) are connected by a fourth guide assembly (4d) and a fourth drive assembly (4e). The fourth guide assembly (4d) includes a vertically arranged guide rail, and the fourth drive assembly (4e) includes a fourth motor. The fourth drive assembly (4e) can drive the lifting tool holder (4b) to move up and down. The second drive assembly is installed on the lifting tool holder (4b).

3. The automatic fruit pitting machine according to claim 2, characterized in that, The housing of the third motor is mounted on the lifting seat (3a), and the rotating shaft of the third motor is connected to the translational tool holder (4a) through a lead screw and nut assembly or a gear and rack assembly; the housing of the fourth motor is mounted on the translational tool holder (4a), and the rotating shaft of the fourth motor is connected to the lifting tool holder (4b) through a lead screw and nut assembly or a gear and rack assembly.

4. The automatic fruit pitting machine according to claim 2, characterized in that, The lifting cutter holder (4b) is rotatably connected to a cutter shaft (4f). The axis of the cutter shaft (4f) is parallel to the guiding direction of the third guide component (9). The core-digging cutter (4c) is fixed to the cutter shaft (4f) by bolts.

5. The automatic fruit pitting machine according to claim 4, characterized in that, The cutting edge of the core-digging cutter (4c) is semi-elliptical, and the short axis of the semi-ellipse is set parallel to or coincides with the axis of the cutter shaft (4f).

6. The automatic fruit pitting machine according to any one of claims 2 to 5, characterized in that, The pressure plate (3b) is fixedly installed on the translational knife holder (4a), or the pressure plate (3b) is directly fixed on the lifting seat (3a).

Images