Automatic protection structure and feeding device with same
By designing an automatic protection structure in the feeding device, including pressure parts, elastic parts, pressure sensors and control units, the dangerous problem of the operator's fingers being drawn into the feeding port is solved, and the equipment is automatically stopped to protect the operator's safety. Effect.
Patent Information
- Application Number
- CN202421049453.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-14
AI Technical Summary
In the food manufacturing industry, operators' fingers are easily wounded into the feeding port when feeding, resulting in work-related accidents. The prior art is difficult to effectively prevent such accidents.
Design an automatic protection structure, including pressure parts, elastic parts, pressure sensors and control units. The pressure parts are set at the edge of the feeding port, the elastic parts provide support, the pressure sensors detect pressure changes, and the control unit controls according to the preset pressure value Equipment is down.
It realizes that when the operator's hand comes into contact with the feeding port, the equipment automatically stops, protecting the personal safety of the operator and avoiding the occurrence of work-related injuries.
Smart Images
Figure CN222373849U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of food processing technology equipment, in particular to an automatic protection structure and a feeding device with the automatic protection structure. Background Art
[0002] In the food manufacturing industry, when food materials need to be extruded and shaped, the operator usually feeds the food materials into the feeding port of the feeding device, and the feeding port is provided with an extrusion and shaping structure. It is found in practice that when using the above-mentioned feeding device, if the operator's movement amplitude is too large and the hand is inserted into the feeding port when feeding, the fingers are easily drawn into the feeding port, and it is often too late to stop the machine by human reaction, resulting in work-related accidents. Utility Model Content
[0003] The purpose of the embodiments of the present application is to provide an automatic protection structure and a feeding device with the automatic protection structure. When a human hand touches the feeding port, the machine will automatically stop to protect the personal safety of the operator.
[0004] In a first aspect, the present application discloses an automatic protection structure for a feeding device, wherein the feeding device comprises a housing having a feeding port, and the automatic protection structure comprises:
[0005] A pressure-bearing member, which is arranged at the edge of the feeding port and is movably connected to the shell along the vertical direction;
[0006] An elastic member, the elastic member is used to apply an elastic supporting force in a vertical direction to the pressure-bearing member so as to keep the pressure-bearing member in an initial position, in which the upper surface of the pressure-bearing member exceeds the upper surface of the feeding port;
[0007] a pressure sensor, the pressure sensor abutting against the elastic member along the vertical direction, the pressure sensor being used to detect the pressure applied by the pressure-bearing member to the elastic member;
[0008] A control unit is electrically connected to the pressure sensor and the start / stop mechanism of the feeding device respectively.
[0009] Further, the control unit is configured such that when the pressure detected by the pressure sensor is greater than a preset pressure value, the control unit can control the feeding device to stop.
[0010] Furthermore, the housing and the pressure-bearing member are connected via a connecting assembly, and the connecting assembly comprises:
[0011] A first fixing member, fixed to a side of the pressure-bearing member facing the housing and extending along the vertical direction;
[0012] The second fixing member is fixed to the edge of the feeding port and corresponds to the position of the first fixing member. The first fixing member and the second fixing member are connected to prevent the pressure-bearing member from moving away from the shell when in the initial position.
[0013] Furthermore, the first fixing member includes a screw and a nut, the second fixing member is provided with a through hole, the first end of the screw is arranged through the through hole, the nut is threadedly connected to the first end of the screw, and when the pressure member is located in the initial position, the nut abuts against the lower surface of the second fixing member.
[0014] Furthermore, the elastic member is a spring, and the spring is sleeved on the screw rod and supported between the pressure-bearing member and the second fixing member.
[0015] Further, the pressure sensor comprises a plurality of pressure sensors, the plurality of pressure sensors are arranged at intervals on the pressure-bearing part, and the pressure sensors are arranged at the corners of the pressure-bearing part and in the middle of the length direction of the pressure-bearing part; and / or,
[0016] A baffle is provided at the middle of the pressure-bearing member along the width direction of the pressure-bearing member, the baffle is provided above the feeding port, and both ends of the baffle are fixedly connected to the pressure-bearing member respectively.
[0017] Furthermore, the middle position of the pressure-bearing member extends downward to form a square guide frame, and the square guide frame and the shell are slidably matched along the vertical direction.
[0018] Furthermore, the automatic protection structure also includes a sensing unit, which is electrically connected to the pressure-bearing part and the shell, and is used to sense the relative position of the pressure-bearing part and the shell.
[0019] Furthermore, the control unit is a programmable logic controller; and / or the automatic protection structure also includes a protective shell, and the protective shell is sleeved on the pressure-bearing part.
[0020] In a second aspect, the present application provides a loading device with an automatic protection structure, wherein the loading device with an automatic protection structure comprises the automatic protection structure described in the first aspect.
[0021] Compared with the prior art, the beneficial effects of the embodiments of the present application are:
[0022] In the embodiment of the present application, an automatic protection structure is provided at the feeding port of the feeding device, and the automatic protection structure includes a pressing plate and a pressure sensing unit, the pressing plate and the feeding port are movably connected, and the elastic component is fixedly connected to the pressing plate and is used to support the pressing plate. When the operator performs the feeding operation, once the hand touches the pressing plate, the position of the pressing plate relative to the feeding port changes, and the elastic component in the pressure sensor fixedly connected to the pressing plate is deformed. After the pressure sensor provided in the elastic component senses a certain pressure, the control device stops operating, thereby protecting the personal safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0024] Figure 1 is a schematic diagram of the automatic protection structure provided by an embodiment of the present application at a first viewing angle;
[0025] Figure 2 yes Figure 1 The enlarged schematic diagram at A in the middle;
[0026] Figure 3 is a schematic diagram of a feeding device (not under pressure) including an automatic protection structure provided in an embodiment of the present application;
[0027] Figure 4 yes Figure 3 The enlarged schematic diagram of point B in the middle;
[0028] Figure 5 is a schematic diagram of a feeding device (under pressure) including an automatic protection structure provided in an embodiment of the present application;
[0029] Figure 6 yes Figure 5 The enlarged schematic diagram at C in the middle;
[0030] Figure 7 is a schematic diagram of the automatic protection structure provided by an embodiment of the present application at a second viewing angle;
[0031] Figure 8 is a schematic diagram of another automatic protection structure provided in an embodiment of the present application;
[0032] Fig. 9 It is a schematic diagram of a protective shell provided in an embodiment of the present application.
[0033] Reference numerals:
[0034] 1-automatic protection structure; 11-pressure-bearing member; 12-elastic member; 13-pressure sensor; 14-first fixing member; 141-screw; 142-nut; 15-second fixing member; 151-through hole; 16-baffle;
[0035] 2-feeding device; 21-housing; 22-feeding port;
[0036] 3- Protective case. DETAILED DESCRIPTION
[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0038] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.
[0039] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.
[0040] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0041] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.
[0042] The technical solution provided in this application will be further described below in conjunction with embodiments and drawings.
[0043] Extruding and shaping food materials is a common operation in the food manufacturing industry. For example, extruding dough into dough strips is usually done using a dough press. During operation, the operator puts the product into the feeding port of the dough press. The feeding port is equipped with two rollers, which press out the bubbles in the dough and press the dough into dough strips. When feeding manually, if the operator's movements are too large and he accidentally puts his hand into the feeding port, his fingers will be pressed by the two rollers and rolled into the equipment. The fastest human reaction time is 1s to 2s. It is too late to rely on the operator's reaction to hit the stop button, and at this time, industrial accidents often occur.
[0044] Based on this, please also refer to Figure 1 to Figure 6 The embodiment of the present application discloses an automatic protection structure 1, which is used for a feeding device 2. The feeding device includes a shell 21, and the shell has a feeding port 22. The automatic protection structure 1 includes: a pressure-bearing member 11, which is arranged at the edge of the feeding port 22 and is movably connected to the shell 21 in the vertical direction; an elastic member 12, which is used to apply an elastic supporting force in the vertical direction to the pressure-bearing member 11, so that the pressure-bearing member 11 remains in an initial position, and the upper surface of the pressure-bearing member 11 exceeds the upper surface of the feeding port 22 in the initial position; a pressure sensor 13, which is in contact with the elastic member 12 in the vertical direction, and the pressure sensor 13 is used to detect the pressure applied by the pressure-bearing member 11 to the elastic member 12; a control unit (not shown), which is electrically connected to the pressure sensor 13 and the start-stop mechanism of the feeding device 2 respectively.
[0045] The pressure-bearing member 11 is disposed at the edge of the feeding port 22 and is movably connected to the housing 21 in the vertical direction. That is, if the pressure-bearing member 11 moves in the vertical direction, its relative position to the housing 21 will also change, and further, its relative position to the feeding port 22 will also change. Figure 3 , Figure 4 As shown, when the pressure-bearing member 11 is not subjected to external pressure other than gravity, the elastic member 12 disposed below the pressure-bearing member 11 provides elastic support force in the vertical direction to the pressure-bearing member 11, and the position of the pressure-bearing member 11 is relatively fixed. At this time, the upper surface of the pressure-bearing member 11 exceeds the upper surface of the feeding port 22, and the distance between the pressure-bearing member 11 and the feeding port 22 is d1. A pressure sensor 13 is abutted against the elastic member 12. If the pressure-bearing member 11 is subjected to pressure, the pressure-bearing member 11 moves downward in the vertical direction, and the relative position of the pressure-bearing member 11 and the feeding port 22 changes. The distance between the pressure-bearing member 11 and the feeding port 22 is d2, as shown in FIG. Figure 5 and Figure 6As the pressure-bearing member 11 moves downward, the elastic member 12 is deformed, and the pressure sensor 13 abutting against the elastic member 12 senses the pressure, and the pressure signal is transmitted to the control unit electrically connected to the pressure sensor 13. After receiving the signal, the control unit controls the feeding device 2 to stop.
[0046] It should be noted that in the embodiment of the present application, the abutment of the pressure sensor 13 and the elastic member 12 in the vertical direction means that the position where the pressure sensor 13 senses the pressure is in the axial direction of the elastic member 12, that is, the pressure sensor 13 senses the force in the vertical direction of the elastic member 12. In the embodiment of the present application, the electrical connection can be either a wired connection or a wireless connection. There are many ways to abut the pressure sensor 13 and the elastic member 12, which can be either a placed abutment or a fixed abutment.
[0047] Furthermore, the control unit is configured as follows: when the pressure detected by the pressure sensor 13 is greater than a preset pressure value, the control unit can control the feeding device 2 to shut down. As an embodiment, when the automatic protection component is used for a noodle pressing machine, the preset pressure value can be 1 kg. If the preset pressure value is too small, a slight change in the external environment or the operator only lightly touching the pressure plate will cause the noodle pressing machine to shut down, affecting actual production; if the preset pressure value is too large, the operator's hand may have been inserted into the feeding port 22, and the noodle pressing machine is still running, and the automatic protection effect cannot be achieved. The preset pressure value can be adjusted according to different application scenarios, such as the initial relative position of the pressure member 11 and the feeding port 22, the transmission efficiency between the elastic member 12 and the pressure sensor 13, and so on.
[0048] Furthermore, the shell 21 is connected to the pressure-bearing member 11 through a connecting assembly, which includes: a first fixing member 14, fixed to the side of the pressure-bearing member 11 facing the shell 21, and extending in the vertical direction; a second fixing member 15, fixed to the edge of the feeding port 22 and corresponding to the position of the first fixing member 14, the first fixing member 14 and the second fixing member 15 are connected to prevent the pressure-bearing member 11 from moving away from the shell 21 in the initial position. It can be understood that an elastic member 12 is provided below the pressure-bearing member 11, and the elastic member 12 provides an upward supporting force to the pressure-bearing member 11, but if the elastic force of the elastic member 12 is too large, that is, the upward supporting force is too large, it will cause the pressure-bearing member 11 to move in the direction away from the shell 21. The first fixing member 14 and the second fixing member 15 cooperate with each other to prevent the pressure-bearing member 11 from moving upward, and then in the initial state, the positions of the pressure-bearing member 11 and the shell 21 are relatively fixed.
[0049] like Figure 1 to Figure 6As shown, as an optional embodiment, the first fixing member 14 includes a screw 141 and a nut 142, and the second fixing member 15 is provided with a through hole 151. The first end of the screw 141 is arranged through the through hole 151, and the nut 142 is threadedly connected to the first end of the screw 141, and when the pressure member 11 is located in the initial position, the nut 142 abuts against the lower surface of the second fixing member 15. It can be understood that the radial dimension of the nut 142 is larger than the diameter of the through hole 151, which ensures that the nut 142 is located on one side of the lower surface of the second fixing member 15, thereby preventing the screw 141 threadedly connected to the nut 142 from moving upward, that is, preventing the pressure plate fixedly connected to the screw 141 from moving upward. In the initial state, the screw 141, the nut 142 and the second fixing member 15 cooperate with each other, and the pressure plate and the housing 21 are relatively stationary. When the pressure plate is compressed, the pressure plate moves downward in the vertical direction, and the screw 141 also moves downward. At this time, the nut 142 and the lower surface of the second fixing member 15 are separated, see Figure 5 , Figure 6 .
[0050] As another embodiment, the first fixing member 14 includes a fixing rod and a fixing block, the fixing block is clamped to the fixing rod, and the fixing block contacts the lower surface of the second fixing member 15. The second fixing member 15 can be fixed to the housing 21 in the horizontal direction or in the vertical direction. For example, the second fixing member 15 includes two mutually perpendicular parts with a bent portion, one part is attached and fixed to the housing 21 in the vertical direction, and the other part is connected to the first fixing member 14.
[0051] Furthermore, the elastic member 12 is a spring, which is sleeved on the screw 141 and supported between the pressure member 11 and the second fixing member 15. The spring is located between the pressure member 11 and the second fixing member 15, which can ensure that the pressure plate is relatively stationary in the initial state. It can be understood that when a through hole 151 is provided in the second fixing member 15, the radial dimension of the spring coil is greater than the diameter of the through hole 151, and then the second fixing member 15 can provide an upward supporting force to the spring. Optionally, the elastic member 12 can also be elastic silicone, elastic plastic, etc., which is not limited in this application.
[0052] In one embodiment, Figure 1 to Figure 6 As shown, the pressure sensor 13 is a sheet-like micro sensor, which is arranged at the lower end of the elastic member 12, and the second fixing member 15 provides an upward supporting force. When the elastic member 12 is pressed downward, the pressure sensor 13 feels the pressure. In another embodiment, the pressure sensor 13 can also be a micro columnar sensor. Taking the elastic member 12 as a spring as an example, the two ends of the columnar sensor are respectively abutted against the two spring coils of the spring. At this time, the abutment is relatively fixed. When the spring is deformed under force, the spring coil is compressed, and the columnar sensor feels the pressure.
[0053] Furthermore, the pressure sensor 13 includes a plurality of pressure sensors 13, which are arranged at intervals on the pressure-bearing member 11, and the pressure sensors 13 are arranged at the corners of the pressure-bearing member 11 and in the middle of the length direction of the pressure-bearing member 11. The pressure sensors 13 can be arranged in plurality along the edge of the pressure plate, such as Figure 7 As shown. In order to achieve the protective effect of the protective device in the present application and avoid the waste caused by too many pressure sensors 13, the position of the pressure sensor 13 is reasonably designed in the present application. When the operator puts his hand into the feeding port 22 during the feeding operation, it is difficult to avoid touching the four corners of the feeding port 22. Even if the four corners of the feeding port 22 are not touched, the middle part of the feeding port 22 will be touched. The corners of the pressure-bearing piece 11 correspond to the four corners of the feeding port 22. Pressure sensors 13 are arranged at the corners of the pressure-bearing piece 11 and in the middle of the pressure-bearing piece 11, which can effectively protect, such as Figure 8 shown.
[0054] Furthermore, a baffle 16 is provided in the middle of the pressure-bearing member 11 along the width direction of the pressure-bearing member 11. The baffle 16 is provided above the feeding port 22. Both ends of the baffle 16 are fixedly connected to the pressure-bearing member 11, such as Figure 8 The baffle 16 is arranged in the middle of the pressure-bearing member 11, which further prevents the operator from inserting his hand into the feeding port 22. Even if the operator bypasses the baffle 16 and inserts his hand into the feeding port 22, it is easier to touch the pressure sensor 13, especially the sensor arranged in the middle of the pressure-bearing member 11, compared with the case without the baffle 16, which further improves the sensing accuracy of the pressure sensor.
[0055] Furthermore, the middle position of the pressure-bearing member 11 extends downward to form a square guide frame, and the square guide frame and the housing 21 are slidably matched in the vertical direction. Figure 3 to Figure 6 The square guide frame prevents the pressure-bearing member 11 from moving in the horizontal direction, ensures that the pressure-bearing member 11 and the housing 21 are relatively fixed in the horizontal direction, and the force felt by the pressure-bearing member 11 can be effectively transmitted to the elastic member 12 .
[0056] Furthermore, the automatic protection structure 1 also includes a sensing unit, which is electrically connected to the pressure-bearing member 11 and the shell 21 , and is used to sense the relative position of the pressure-bearing member 11 and the shell 21 .
[0057] As an optional embodiment, the sensing unit includes a first sensing unit and a second sensing unit, the first sensing unit is fixed on the shell 21, the second sensing unit is fixedly connected to the first sensing unit, and is slidably connected to the pressure-bearing member 11. When the pressure-bearing member 11 is compressed, the sensing unit senses that the relative position of the pressure-bearing member 11 and the shell 21 changes. If this change exceeds a preset value, the sensing unit issues an alarm. It is understandable that in this embodiment, the portion where the sensing unit and the pressure-bearing member 11 are slidably connected can be set as a retractable component. When the relative position of the pressure plate and the shell 21 becomes smaller, the retractable portion of the retractable component extends into the fixed portion. This setting can ensure that the sensing unit does not affect the compression of the elastic member 12.
[0058] As another optional embodiment, the sensing unit includes a first sensing unit arranged on the pressure-bearing part 11 and a second sensing unit arranged on the shell 21. The first sensing unit and the second sensing unit are wirelessly connected, so that the sensing unit can sense the change in the distance between the pressure-bearing part 11 and the shell 21.
[0059] Furthermore, the control unit is a programmable logic controller. A programmable logic controller (PLC) is a common controller that has the advantages of easy programming, high flexibility, rapid response to signals, small size, and low cost. In addition to PLC, the control unit may also be a proportional differential integral controller (PID), an embedded controller, and the like.
[0060] Furthermore, the automatic protection structure 1 further comprises a protective shell 3, which is sleeved on the pressure-bearing member 11. The protective shell 3 can protect the pressure-bearing member 11, and the protective shell 3 can be configured as a protective shell 3 with rounded corners, such as Fig. 9 As shown, the edges and corners of the pressure piece 11 are prevented from hitting or scratching the operator.
[0061] In the second aspect, the embodiment of the present application provides a feeding device 2 having an automatic protection structure 1, and the feeding device 2 includes the automatic protection structure 1 of the first aspect. Exemplarily, the feeding device 2 can be a bread machine, a dough pressing machine, and the like.
[0062] An automatic protection structure and a feeding device with an automatic protection structure disclosed in the embodiment of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiment of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the embodiments of the present application. At the same time, for general technicians in this field, according to the ideas of the embodiments of the present application, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the embodiments of the present application.
Claims
1. An automatic protection structure for a feeding device, the feeding device comprising a housing having a feeding port, characterized in that: The automatic protection structure comprises: A pressure-bearing member, which is arranged at the edge of the feeding port and is movably connected to the shell along the vertical direction; An elastic member, the elastic member is used to apply an elastic supporting force in a vertical direction to the pressure-bearing member so as to keep the pressure-bearing member in an initial position, in which the upper surface of the pressure-bearing member exceeds the upper surface of the feeding port; a pressure sensor, the pressure sensor abutting against the elastic member along the vertical direction, the pressure sensor being used to detect the pressure applied by the pressure-bearing member to the elastic member; A control unit is electrically connected to the pressure sensor and the start / stop mechanism of the feeding device respectively.
2. The automatic protection structure according to claim 1, characterized in that: The control unit is configured such that when the pressure detected by the pressure sensor is greater than a preset pressure value, the control unit can control the feeding device to stop.
3. The automatic protection structure according to claim 1, characterized in that: The housing and the pressure-bearing member are connected via a connecting assembly, and the connecting assembly comprises: A first fixing member, fixed to a side of the pressure-bearing member facing the housing and extending along the vertical direction; The second fixing member is fixed to the edge of the feeding port and corresponds to the position of the first fixing member. The first fixing member and the second fixing member are connected to prevent the pressure-bearing member from moving away from the shell when in the initial position.
4. The automatic protection structure according to claim 3, characterized in that: The first fixing member includes a screw and a nut, the second fixing member is provided with a through hole, the first end of the screw is arranged through the through hole, the nut is threadedly connected to the first end of the screw, and when the pressure-bearing member is located in the initial position, the nut abuts against the lower surface of the second fixing member.
5. The automatic protection structure according to claim 4, characterized in that: The elastic member is a spring, which is sleeved on the screw rod and supported between the pressure-bearing member and the second fixing member.
6. The automatic protection structure according to claim 1, characterized in that: The pressure sensor comprises a plurality of pressure sensors, the plurality of pressure sensors are arranged at intervals on the pressure-bearing part, and the pressure sensors are arranged at the corners of the pressure-bearing part and in the middle of the length direction of the pressure-bearing part; and / or, A baffle is provided at the middle of the pressure-bearing member along the width direction of the pressure-bearing member, the baffle is provided above the feeding port, and both ends of the baffle are fixedly connected to the pressure-bearing member respectively.
7. The automatic protection structure according to claim 1, characterized in that: The middle position of the pressure-bearing member extends downward to form a square guide frame, and the square guide frame and the shell are slidably matched along the vertical direction.
8. The automatic protection structure according to claim 1, characterized in that: The automatic protection structure further comprises a sensing unit, wherein the sensing unit is electrically connected to the pressure-bearing part and the shell, and the sensing unit is used for sensing the relative position of the pressure-bearing part and the shell.
9. The automatic protection structure according to claim 1, characterized in that: The control unit is a programmable logic controller; and / or, The automatic protection structure also includes a protective shell, which is sleeved on the pressure-bearing part.
10. A feeding device with an automatic protection structure, characterized in that: The feeding device with automatic protection structure comprises the automatic protection structure described in any one of claims 1-9.