Food transfer anti-stick fixing device

Abstract

This application discloses a food transfer anti-sticking and fixing device, including a conveying module and a negative pressure generating module. It aims to solve the technical problem that formed foods are prone to significant differences in position and posture during transfer due to the influence of the gripping module, thus hindering the automation of the packaging process. It uses a powder-sprinkling component to prevent food displacement; employs negative pressure adsorption technology to neatly arrange food and improve food quality; adds a pressure relief valve to maintain stable negative pressure and ensure product quality; and adds an air filter to extend the device's lifespan.

Description

Technical Field

[0001] This application relates to the field of food processing equipment technology, specifically to a food transfer anti-sticking and fixing device. Background Technology

[0002] Food processing is an important part of the food industry, widely satisfying the dietary needs of different consumer groups. Among them, dumplings, wontons, and pastries are popular and common categories. In their production process, the conveying of shaped food and subsequent packaging are key links to ensure production efficiency and product quality.

[0003] In existing production processes, shaped food products are typically placed on a conveyor belt by gripping modules and transported to the next stage for subsequent boxing. However, during this process, the food often adheres to the gripping modules, causing it to move randomly on the conveyor belt. This results in deviations in the food's position and highly unstable consistency in the posture of the food products, severely impacting the subsequent boxing process.

[0004] A patent document with publication number CN220765798U, which is known to the inventor, discloses a gripping device. By setting a material-topping assembly (including a telescopic rod, an air-blowing plate, and an air pump) on the gripping device, when the gripping device places wontons, the telescopic rod extends to push the air-blowing plate downwards to push the wontons, while the air pump blows air onto the wontons through the air-blowing plate, thereby preventing the wontons from sticking to the gripping device or the air-blowing plate.

[0005] However, in the process of implementing the technical solution in the embodiments of this application, the inventors of this application found that the structure of the above solution is too complicated. Since the gripping device needs to be adapted to the compact layout of the food production line and is small in size, the integration of additional components imposes strict constraints on the internal space. This not only increases the manufacturing cost, but also increases the failure rate and the technical threshold and cost of later maintenance. In addition, if the airflow of the blowing plate and the pushing motion of the telescopic rod are not controlled with sufficient precision, it is easy to cause the wonton position to shift. In severe cases, it may also cause the wonton to deform or wear, thereby affecting the product quality.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] In view of at least one of the above technical problems, this disclosure provides a food transfer anti-sticking and fixing device, which mainly solves the technical problem that existing molded foods are easily affected by the gripping module during the transfer process, resulting in significant differences in the placement and posture of the food, thereby hindering the boxing process.

[0008] According to one aspect of this disclosure, a food transfer anti-sticking and fixing device is provided, which includes a conveying module and a negative pressure generating module; the conveying module includes a support frame, an annular conveyor belt disposed at the support frame, and a negative pressure cavity disposed below the input end of the annular conveyor belt and connected to the negative pressure generating module; the surface of the annular conveyor belt has a plurality of vent holes evenly spaced for ventilation with the negative pressure cavity.

[0009] In some embodiments of this disclosure, the negative pressure cavity is fixed relative to the support frame. The negative pressure cavity includes an adsorption plate. The adsorption plate includes an upper panel with a plurality of adsorption holes communicating with the cavity of the negative pressure cavity, and a U-shaped arc surface located on one side of the upper panel with its outer edge surface used to correspondingly contact the annular conveyor belt.

[0010] In some embodiments of this disclosure, a conveying path frame is fixed above the support frame and its upper surface is flush with the adsorption plate, and a power roller and a steering roller are fixed at corresponding positions below the support frame; the conveyor belt passes through the power roller and the steering roller in an S-shape.

[0011] In some embodiments of this disclosure, at least five circumferentially evenly distributed drive columns are provided on both sides of the power roller, and the annular conveyor belt is provided on both sides with circumferentially evenly distributed connecting holes for corresponding engagement with the drive columns.

[0012] In some embodiments of this disclosure, the conveying path frame includes an anti-tipping component, which includes connectors fixed to both sides of the output end of the conveying path frame and inclined upward, and a crossbar fixed to the end of the connector.

[0013] In some embodiments of this disclosure, a powder-spreading assembly is also provided upstream of the conveying module. The powder-spreading assembly includes a powder-spreading bracket, a powder storage box fixed on the upper part of the powder-spreading bracket, and a vibration motor installed on one side of the powder storage box.

[0014] In some embodiments of this disclosure, the negative pressure generating module includes a negative pressure machine and a negative pressure channel for connecting the negative pressure machine and the negative pressure cavity.

[0015] In some embodiments of this disclosure, the negative pressure unit is an axial flow fan or a vacuum generator.

[0016] In some embodiments of this disclosure, the negative pressure generating module further includes a pressure relief valve disposed on the negative pressure channel near the negative pressure machine.

[0017] In some embodiments of this disclosure, the negative pressure generating module further includes an air filter disposed on the negative pressure channel near the negative pressure cavity.

[0018] One or more technical solutions provided in the embodiments of this application have at least one of the following technical effects or advantages:

[0019] 1. By using a powder-sprinkling component, flour is sprinkled on the surface of the food before the gripping module picks it up. This effectively solves the technical problem of the gripping module sticking to the food when it picks it up, thereby preventing the food from shifting.

[0020] 2. Using negative pressure adsorption technology, a downward suction force is generated when food is placed on the circular conveyor belt. This effectively solves the technical problems of food displacement caused by the adhesion between the gripping module and the food, as well as the easy residue of flour on the food surface. This achieves the technical effect of neatly arranging food and improving food quality.

[0021] 3. By adding a pressure relief valve, the technical problem of food being easily damaged due to excessive negative pressure is effectively solved, thereby achieving the technical effect of maintaining stable negative pressure and ensuring product quality.

[0022] 4. By installing an air filter, flour or other substances in food can be effectively prevented from entering the negative pressure generation module. This effectively solves the technical problem that impurities in food and air can easily damage the negative pressure generation module, thereby achieving the technical effect of extending the life of the device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the location of the food transfer anti-sticking and fixing device in a food production equipment according to one embodiment of this application.

[0024] Figure 2 This is a schematic diagram of the overall structure of the food transfer anti-sticking and fixing device in one embodiment of this application.

[0025] Figure 3 This is a partial structural diagram of the conveying module in one embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the negative pressure cavity in one embodiment of this application.

[0027] Figure 5 This is a schematic diagram of the overall structure of the food transfer anti-sticking and fixing device in another embodiment of this application.

[0028] Figure 6 This is a schematic diagram of the powder-spreading component structure of the conveying module in another embodiment of this application.

[0029] In the above figures, 1 is a food transfer anti-stick fixing device, 11 is a conveying module, 111 is a support frame, 112 is a ring conveyor belt, 1121 is a vent, 1122 is a connecting hole, 113 is a negative pressure cavity, 1131 is an adsorption plate, 1132 is a connecting plate, 1133 is a side plate, 114 is an adapter, 115 is a drive unit, 116 is a steering roller, 117 is a power roller, 1171 is a drive column, and 118 is... The conveying path frame includes: 1181 anti-tipping component, 119 transmission component, 12 negative pressure generation module, 121 negative pressure machine, 122 pressure relief valve, 123 air filter, 124 negative pressure channel, 13 powder spreading component, 131 powder spreading bracket, 132 powder storage box tray, 133 powder storage box, 134 vibration motor, 135 limit switch, 136 hinge, 2 food production equipment, and 3 gripping module. Detailed Implementation

[0030] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "connection" and "linkage" in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0031] Unless otherwise specified, the unit modules (components, structures, mechanisms) or sensors involved in the following embodiments are all conventional commercially available products.

[0032] This application provides a food transfer anti-sticking and fixing device. It uses a powder-sprinkling component to prevent the gripping mechanism from sticking to the food; it uses negative pressure adsorption to gently press the food onto the circular conveyor belt, preventing the food from shifting due to adhesion to the gripping device; it adds a pressure relief valve to the negative pressure generation module to release pressure when the negative pressure applied to the food on the circular conveyor belt is too high, thus ensuring the food does not deform or break; and it adds an air filter to the negative pressure generation module to filter impurities from the food and air, thereby protecting the pressure relief valve and the negative pressure generator from damage by impurities and extending the device's lifespan.

[0033] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] This example discloses a food transport anti-sticking and fixing device. See [link to relevant documentation]. Figure 1 The food transfer anti-stick fixing device 1 is installed on the food production equipment 2. Its front end is a gripping module 3 that transfers the shaped food to the food transfer anti-stick fixing device 1. This equipment is used to prevent the shaped food from shifting due to sticking and other influencing factors when it is transferred to this equipment by the gripping module 3.

[0036] See Figure 2 The food transfer anti-sticking and fixing device 1 includes a conveying module 11 and a negative pressure generating module 12; see also Figure 3 The conveying module includes a support frame 111, an annular conveyor belt 112 located at the support frame 111, and a negative pressure cavity 113 located below the input end of the annular conveyor belt 112 and connected to the negative pressure generating module 12. The surface of the annular conveyor belt 112 has a plurality of vent holes 1121 evenly spaced for ventilation with the negative pressure cavity 113. The support frame 111 is a metal frame used to support the various components in the conveying module 11. The annular conveyor belt 112 is made of food-grade rubber and is installed above the support frame 111. The negative pressure cavity 113 is installed below the carrying section of the annular conveyor belt 112 and is used to transfer the negative pressure generated by the negative pressure generating module 12 to the vent holes 1121 on the annular conveyor belt 112, thereby adsorbing food onto the annular conveyor belt 112. There are three sets of vent holes 1121 on the annular conveyor belt 112 distributed circumferentially along the annular conveyor belt 112, corresponding to the relative positions of the three dumplings transferred by the gripping module 3 each time.

[0037] like Figure 4 As shown, the negative pressure cavity 113 is fixed relative to the support frame 111. The negative pressure cavity 113 includes an adsorption plate. The adsorption plate 1131 includes an upper plate surface with several adsorption holes communicating with the cavity of the negative pressure cavity 113, and a U-shaped arc surface located on one side of the upper plate surface with its outer edge for corresponding contact with the annular conveyor belt. The front of the negative pressure cavity 113 is fixedly connected to the support frame 111 by bolts. The U-shaped arc surface structure of the adsorption plate 1131 allows the annular conveyor belt 112 to smoothly transition when passing through the negative pressure cavity 113, avoiding wear of the annular conveyor belt 112 due to friction, thereby extending the service life of the device. Adsorption holes are opened on its upper part, which are connected to the ventilation holes 1121 opened on the annular conveyor belt 112. There are three sets of adsorption holes, corresponding to three sets of ventilation holes 1121, with several elongated holes evenly distributed in each set.

[0038] like Figure 3As shown, the food transfer anti-stick fixing device 1 also includes a conveying path frame 118 fixed above the support frame 111 with its upper surface flush with the adsorption plate 1131, a power roller 117 fixed at a corresponding position below the support frame 111, and a steering roller 116; the annular conveyor belt 112 passes through the power roller 117 and the steering roller 116 in an S-shape. The conveying path frame 118 is made of smooth stainless steel and is fixed to the support frame 111 by bolts. It is responsible for supporting the load-bearing section of the annular conveyor belt 112 made of food-grade rubber, preventing food displacement caused by the collapse of the annular conveyor belt 112. At the front end of the conveying path frame 118, there is a reverse roller for turning the load-bearing section of the annular conveyor belt 112 into a return section. Its upper surface is flush with the upper surface of the adsorption plate 1131 to prevent the annular conveyor belt 112 from being worn due to friction. The return section of the annular conveyor belt 112, through the steering roller 116 and the power roller 117, widens the gap between the bearing section and the return section at the input end of the annular conveyor belt 112, allowing the thicker negative pressure cavity 113 to be fitted inside the annular conveyor belt 112. The lowest end of the negative pressure cavity 113 is higher than the lowest end of the power roller 117. Limited by the steering roller 116 and the power roller 117, the intersection point of the annular conveyor belt 112 and the adsorption plate 1131 is tangent, preventing the annular conveyor belt 112 from being worn by the ridges of the negative pressure cavity 113. The drive unit 115 is an electric motor, located in the middle below the conveyor path frame 118 to avoid obstructing the operation of the device. It drives the power roller 117 to rotate through the transmission assembly 119, thereby driving the annular conveyor belt 112 fitted on the conveyor path frame 118.

[0039] The power roller 117 has at least five circumferentially evenly distributed drive posts 1171 on both sides, and the annular conveyor belt 112 has circumferentially evenly distributed connecting holes 1122 on both sides for corresponding engagement with the drive posts 1171. The drive posts 1171 on both sides of the power roller 117 can pass through the connecting holes 1122 on both sides of the annular conveyor belt 112, thereby increasing the friction between the two components and making the annular conveyor belt 112 easier to operate.

[0040] The conveyor path frame 118 includes an anti-tipping component 1181, which includes connectors fixed to both sides of the output end of the conveyor path frame 118 and inclined upwards, and a crossbar fixed to the end of the connectors. When food passes through the output end of the conveyor path frame 118, because its reverse roller is circular, the food is prone to move in an arc with the conveyor belt at this point, causing the food to tip over; the crossbar is perpendicular to the direction of food movement, and its distance from the end of the circular conveyor belt 112 is just enough to accommodate the vertical fall of the food. When the food falls at a slight angle, its upper part is blocked by the crossbar, which corrects the posture of the food and facilitates packaging.

[0041] like Figure 2As shown, the negative pressure generating module 12 includes a negative pressure compressor 121 and a negative pressure channel 124 connecting the negative pressure compressor 121 and the negative pressure chamber 113. A pressure relief valve 122 is provided on the negative pressure channel 124 near the negative pressure compressor 121, and an air filter 123 is provided on the negative pressure channel 121 near the negative pressure chamber 113. In this example, the negative pressure compressor 121 of the negative pressure generating module 12 is an axial flow fan, and the negative pressure channel 124 is a connecting hose. The axial flow fan draws gas from the vent 1121 of the annular conveyor belt 112 through the negative pressure chamber 113 into the connecting hose, then through the air filter 123 and the pressure relief valve 122, and finally discharges the gas from the equipment by the axial flow fan. The pressure relief valve 122 is used to prevent excessive suction pressure, thereby avoiding food damage due to excessive suction at the vent 1121. Air filter 123 is used to filter food and impurities in the air intake hose, and to prevent pressure relief valve 122 and negative pressure unit from failing.

[0042] During operation, the axial flow fan runs continuously, drawing the gas from the vent 1121 of the annular conveyor belt 112 out of the negative pressure chamber 113, through the negative pressure channel 124 into the air filter 123 and the pressure relief valve 122, and finally discharged from the equipment by the axial flow fan. At this time, negative pressure is generated at the vent 1121 above the negative pressure chamber 113.

[0043] The drive unit 115 transmits power to the power roller 117 via the transmission assembly 119. The drive column 1171 on the power roller 117 then transmits power to the annular conveyor belt 112 through the connecting hole 1122, causing it to run. During normal operation of the annular conveyor belt 112, when the gripping module 3 places the food picked up from the previous process onto the annular conveyor belt 112, this point is directly above the negative pressure cavity 113. The drive unit 115 stops rotating, stopping the annular conveyor belt 112 and preventing deformation and breakage of the food due to friction from the annular conveyor belt 112. When the gripping module 3 opens its mechanical claws, although there is some adhesion between the gripping module 3 and the food, the negative pressure at the vent 1121 firmly presses the food onto the annular conveyor belt 112. The static friction force received by the food increases and is greater than the adhesive force between the gripping module 3 and the food, preventing the food from shifting due to the opening of the gripping module 3. Then, the gripping module 3 is lifted and moved to the previous process position. At the same time, the drive unit 115 operates again, causing the circular conveyor belt 112 to run and move the food towards the output end. The above movement is repeated to ensure that the next row of food is stably placed on the circular conveyor belt 112.

[0044] An axial flow fan draws gas containing flour and airborne impurities into the negative pressure chamber 113. The gas then enters the negative pressure channel 124, where it first passes through an air filter 123 to remove the flour and impurities before being discharged from the equipment by the axial flow fan. When the negative pressure generated by the axial flow fan becomes too high, the pressure relief valve 122 automatically activates, opening the connection between the axial flow fan and the outside air, thereby reducing the negative pressure in the negative pressure chamber 113 and preventing food deformation and breakage.

[0045] When food falls from the output end of the circular conveyor belt 112 onto the conveyor belt of the next process, the food is very prone to tipping over due to the circular shape of its reverse rollers, which cause it to move in an arc along the conveyor belt. Therefore, an anti-tipping component 1181 is provided at the output end of the conveyor path frame 118. When the food is about to tip over, its upper part slightly collides with the anti-tipping component 1181, correcting the food's posture. This allows for a simple and efficient way to right food that is about to tip over.

[0046] Example 2

[0047] This example discloses a food transport anti-sticking and fixing device. See [link to relevant documentation]. Figure 5 The food transfer anti-stick fixing device 1 is installed on the food production equipment 2. Its front end is a gripping module 3 that transfers the shaped food to the food transfer anti-stick fixing device 1. This equipment is used to prevent the shaped food from shifting due to sticking and other influencing factors when it is transferred to this equipment by the gripping module 3.

[0048] See Figure 2 The food transfer anti-sticking and fixing device 1 includes a conveying module 11 and a negative pressure generating module 12; see also Figure 3 The conveying module includes a support frame 111, an annular conveyor belt 112 located at the support frame 111, and a negative pressure cavity 113 located below the input end of the annular conveyor belt 112 and connected to the negative pressure generating module 12. The surface of the annular conveyor belt 112 has a plurality of vent holes 1121 evenly spaced for ventilation with the negative pressure cavity 113. The support frame 111 is a metal frame used to support the various components in the conveying module 11. The annular conveyor belt 112 is made of food-grade rubber and is installed above the support frame 111. The negative pressure cavity 113 is installed below the carrying section of the annular conveyor belt 112 and is used to transfer the negative pressure generated by the negative pressure generating module 12 to the vent holes 1121 on the annular conveyor belt 112, thereby adsorbing food onto the annular conveyor belt 112. There are three sets of vent holes 1121 on the annular conveyor belt 112 distributed circumferentially along the annular conveyor belt 112, corresponding to the relative positions of the three dumplings transferred by the gripping module 3 each time.

[0049] like Figure 4As shown, the negative pressure cavity 113 is fixed relative to the support frame 111. The negative pressure cavity 113 includes an adsorption plate. The adsorption plate 1131 includes an upper plate surface with several adsorption holes communicating with the cavity of the negative pressure cavity 113, and a U-shaped arc surface located on one side of the upper plate surface with its outer edge for corresponding contact with the annular conveyor belt. The front of the negative pressure cavity 113 is fixedly connected to the support frame 111 by bolts. The U-shaped arc surface structure of the adsorption plate 1131 allows the annular conveyor belt 112 to smoothly transition when passing through the negative pressure cavity 113, avoiding wear of the annular conveyor belt 112 due to friction, thereby extending the service life of the device. Adsorption holes are opened on its upper part, which are connected to the ventilation holes 1121 opened on the annular conveyor belt 112. There are three sets of adsorption holes, corresponding to three sets of ventilation holes 1121, with several elongated holes evenly distributed in each set.

[0050] like Figure 3 As shown, the food transfer anti-stick fixing device 1 also includes a conveying path frame 118 fixed above the support frame 111 with its upper surface flush with the adsorption plate 1131, a power roller 117 fixed at a corresponding position below the support frame 111, and a steering roller 116; the annular conveyor belt 112 passes through the power roller 117 and the steering roller 116 in an S-shape. The conveying path frame 118 is made of smooth stainless steel and is fixed to the support frame 111 by bolts. It is responsible for supporting the load-bearing section of the annular conveyor belt 112 made of food-grade rubber, preventing food displacement caused by the collapse of the annular conveyor belt 112. At the front end of the conveying path frame 118, there is a reverse roller for turning the load-bearing section of the annular conveyor belt 112 into a return section. Its upper surface is flush with the upper surface of the adsorption plate 1131 to prevent the annular conveyor belt 112 from being worn due to friction. The return section of the annular conveyor belt 112, through the steering roller 116 and the power roller 117, widens the gap between the bearing section and the return section at the input end of the annular conveyor belt 112, allowing the thicker negative pressure cavity 113 to be fitted inside the annular conveyor belt 112. The lowest end of the negative pressure cavity 113 is higher than the lowest end of the power roller 117. Limited by the steering roller 116 and the power roller 117, the intersection point of the annular conveyor belt 112 and the adsorption plate 1131 is tangent, preventing the annular conveyor belt 112 from being worn by the ridges of the negative pressure cavity 113. The drive unit 115 is an electric motor, located in the middle below the conveyor path frame 118 to avoid obstructing the operation of the device. It drives the power roller 117 to rotate through the transmission assembly 119, thereby driving the annular conveyor belt 112 fitted on the conveyor path frame 118.

[0051] The power roller 117 has at least five circumferentially evenly distributed drive posts 1171 on both sides, and the annular conveyor belt 112 has circumferentially evenly distributed connecting holes 1122 on both sides for corresponding engagement with the drive posts 1171. The drive posts 1171 on both sides of the power roller 117 can pass through the connecting holes 1122 on both sides of the annular conveyor belt 112, thereby increasing the friction between the two components and making the annular conveyor belt 112 easier to operate.

[0052] The conveyor path frame 118 includes an anti-tipping component 1181, which includes connectors fixed to both sides of the output end of the conveyor path frame 118 and inclined upwards, and a crossbar fixed to the end of the connectors. When food passes through the output end of the conveyor path frame 118, because its reverse roller is circular, the food is prone to move in an arc with the conveyor belt at this point, causing the food to tip over; the crossbar is perpendicular to the direction of food movement, and its distance from the end of the circular conveyor belt 112 is just enough to accommodate the vertical fall of the food. When the food falls at a slight angle, its upper part is blocked by the crossbar, which corrects the posture of the food and facilitates packaging.

[0053] like Figure 6 As shown, the food transfer anti-stick fixing device 1 also includes a powdering assembly 13 located at the pre-process stage of the food transfer anti-stick fixing device 1. The powdering assembly 13 includes a powdering bracket 131, a powder storage box 133 fixed on the upper part of the powdering bracket 131, and a vibration motor 134 installed on one side of the powder storage box 133. The powdering assembly 13 is located before the gripping process and is fixed to the food production equipment 2 by the powdering bracket 131. The upper part of the assembly is connected to the powder storage box tray 132 by a hinge 136. The powder storage box tray 132 extends the powder storage box 133 forward so that it is positioned directly above the food transport path. The powder storage box 133 is embedded in the powder storage box tray 132, with uniform and dense micro-openings passing through the tray 132 below it. This allows the flour inside to be shaken onto the food by the vibration motor 134 mounted on the side of the powder storage box 133. The limiter 135 is hinged to the powder-sprinkling bracket 131 and the powder storage box tray 132. Its length is extendable and it supports the powder storage box tray 132, preventing the hinge 136 from failing due to excessive weight. This component effectively reduces the adhesion between the food and the gripping module by sprinkling flour onto the food, facilitating the release of the food when the gripping module's claws open and preventing displacement.

[0054] like Figure 2As shown, the negative pressure generating module 12 includes a negative pressure generator 121 and a negative pressure channel 124 for connecting the negative pressure generator 121 and the negative pressure chamber 113. A pressure relief valve 122 is provided on the negative pressure channel 124 near the negative pressure generator 121, and an air filter 123 is provided on the negative pressure channel 121 near the negative pressure chamber 113. In this example, the negative pressure generator 121 of the negative pressure generating module 12 is a vacuum generator, and the negative pressure channel 124 is a connecting hose. The vacuum generator introduces gas from the vent 1121 of the annular conveyor belt 112 through the negative pressure chamber 113 into the connecting hose, then through the air filter 123 and the pressure relief valve 122, and finally discharged from the equipment by the axial flow fan. The pressure relief valve 122 is used to prevent excessive suction pressure, thereby avoiding food damage due to excessive suction at the vent 1121. Air filter 123 is used to filter flour from food and impurities in the air intake hose, and to prevent pressure relief valve 122 and negative pressure unit 121 from malfunctioning.

[0055] During operation, the vacuum generator runs continuously, drawing the gas from the vent 1121 of the annular conveyor belt 112 out of the negative pressure chamber 113, through the negative pressure channel 124 into the air filter 123 and the pressure relief valve 122, and finally out of the equipment by the vacuum generator. At this time, negative pressure is generated at the vent 1121 above the negative pressure chamber 113.

[0056] The powder-sprinkling component 13 operates intermittently. When there is shaped food below it, the vibration motor 134 operates, causing the powder storage box 133 to vibrate. At this time, the powder storage box tray 132 rotates back and forth around the hinge 136 under the drive of the powder storage box 133 and the restriction of the limiter, causing the flour to be sprinkled from the through hole at the bottom of the powder storage box 133 onto the food. Then it stops operating.

[0057] The process of the gripping module 3 transferring the flour-sprinkled food to the conveying module 11 is as follows: the drive unit 115 operates continuously, and transmits power to the power roller 117 through the transmission component 119. The transmission teeth on the power roller 117 then transmit the power to the annular conveyor belt 112 through the transmission groove, so that it runs. When the gripping module 3 places the food picked up from the previous process onto the circular conveyor belt 112, the gripping module 3 moves at the same speed as the circular conveyor belt 112 along its path, falling at a constant speed until the food contacts the circular conveyor belt 112. This point is directly above the negative pressure cavity 113. At this time, the gripping module 3 continues to move with the circular conveyor belt 112 and opens its mechanical claws. Although the flour reduces the adhesion between the gripping module 3 and the food to some extent, there is still a small amount of stickiness. The negative pressure at the vent 1121 firmly presses the food onto the circular conveyor belt 112, increasing the static friction force on the food, which is greater than the adhesive force between the gripping module 3 and the food, preventing the food from shifting due to the opening of the gripping module 3. Afterward, the gripping module 3 is lifted and moved to the previous process location, and the drive unit 115 continues to drive the circular conveyor belt 112 to run stably, moving the food towards the output end. Repeat the above movements to place the next row of food items stably on the circular conveyor belt 112.

[0058] The vacuum generator draws gas containing flour and air impurities into the negative pressure chamber 113. The gas then enters the negative pressure channel 124, where it first passes through the air filter 123 to remove the flour and impurities before being discharged from the equipment through the vacuum generator. When the negative pressure generated by the vacuum generator becomes too high, the pressure relief valve 122 automatically activates, opening the connection between the vacuum generator and the outside air, thereby reducing the negative pressure in the negative pressure chamber 113 and preventing food deformation and breakage.

[0059] When food falls from the output end of the circular conveyor belt 112 onto the conveyor belt of the next process, the food is very prone to tipping over due to the circular shape of its reverse rollers, which cause it to move in an arc along the conveyor belt. Therefore, an anti-tipping component 1181 is provided at the output end of the conveyor path frame 118. When the food is about to tip over, its upper part slightly collides with the anti-tipping component 1181, correcting the food's posture. This allows for a simple and efficient way to right food that is about to tip over.

[0060] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0061] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of its inventive concept. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A food transfer anti-sticking and fixing device, characterized in that, It includes a conveying module and a negative pressure generating module; the conveying module includes a support frame, an annular conveyor belt located at the support frame, and a negative pressure cavity located below the input end of the annular conveyor belt and connected to the negative pressure generating module; the surface of the annular conveyor belt has a plurality of vent holes evenly spaced for ventilation with the negative pressure cavity.

2. The food transfer anti-sticking and fixing device according to claim 1, characterized in that, The negative pressure cavity is fixed relative to the support frame. The negative pressure cavity includes an adsorption plate. The adsorption plate includes an upper panel with a plurality of adsorption holes communicating with the cavity of the negative pressure cavity, and a U-shaped arc surface located on one side of the upper panel with its outer edge surface used for corresponding contact with the annular conveyor belt.

3. The food transfer anti-sticking and fixing device according to claim 2, characterized in that, It also includes a conveying path frame fixed above the support frame with its upper surface flush with the adsorption plate, a power roller and a steering roller fixed at corresponding positions below the support frame; the conveyor belt passes through the power roller and the steering roller in an S-shape.

4. The food transfer anti-sticking and fixing device according to claim 3, characterized in that, The power roller has at least 5 circumferentially evenly distributed drive columns on both sides, and the annular conveyor belt has circumferentially evenly distributed connecting holes on both sides for meshing with the drive columns.

5. The food transfer anti-sticking and fixing device according to claim 3 or 4, characterized in that, The conveying path frame includes an anti-tipping component, which includes connectors fixed to both sides of the output end of the conveying path frame and inclined upwards, and a crossbar fixed to the end of the connector.

6. The food transfer anti-sticking and fixing device according to claim 1, characterized in that, It also includes a powder spreading assembly located upstream of the conveying module. The powder spreading assembly includes a powder spreading bracket, a powder storage box fixed on the upper part of the powder spreading bracket, and a vibration motor installed on one side of the powder storage box.

7. The food transfer anti-sticking and fixing device according to claim 1, characterized in that, The negative pressure generation module includes a negative pressure machine and a negative pressure channel for connecting the negative pressure machine and the negative pressure cavity.

8. The food transfer anti-sticking and fixing device according to claim 7, characterized in that, The negative pressure unit is an axial flow fan or a vacuum generator.

9. The food transfer anti-sticking and fixing device according to claim 7, characterized in that, The negative pressure generation module also includes a pressure relief valve located on the negative pressure channel near the negative pressure machine.

10. The food transfer anti-sticking and fixing device according to claim 7 or 8, characterized in that, The negative pressure generating module also includes an air filter located on the negative pressure channel near the negative pressure cavity.

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