Automatic pet wet food can opener

Abstract

An automatic wet pet food opener, belonging to the technical field of opening equipment, includes a motor reduction mechanism, a drive gear, a rack and pinion, a fixed shell, a fixed compartment, a rotating head, and a photoelectric switch. It also includes a detection circuit and a control circuit. The motor reduction mechanism, drive gear, rack and pinion, fixed shell, fixed compartment, rotating head, and photoelectric switch are installed together, while the detection circuit and control circuit are installed inside the fixed shell. Before and after each feeding, the user simply places the wet pet food bag (containing meat paste) at the top of the rotating head. Under the action of the photoelectric switch, detection circuit, and control circuit, the first motor reduction mechanism, via the drive gear and rack and pinion, controls the rotating head to automatically rise or fall. The second motor reduction mechanism controls the rotating head to unscrew or tighten the movable cap of the wet pet food bag. This invention achieves automatic cap installation and removal, providing convenience to the user and achieving good hygiene, showing promising prospects.

Description

Technical Field

[0001] This utility model relates to the technical field of pet feeding aids, and in particular to an automatic wet pet food opener. Background Technology

[0002] Currently, pet feeding typically involves the owner manually placing food into a dish for the pet to eat. This method, due to the limited variety of food components, fails to provide optimal nutrition for pets. With technological advancements, pet meat-based wet food has become more widely used (this type of food is generally packaged in a sturdy, non-toxic plastic food bag; a removable cap is threaded onto the upper center of the food bag's discharge tube. When the cap is closed, the shelf life is generally 18 months; after opening and consumption, the remaining wet food can generally be kept safe at room temperature for one month). Pet meat-based wet food has the following advantages: (1) Meat-based wet food is usually easier for pets to digest and absorb, especially for older pets or pets with weak digestive systems. This form of food can reduce their digestive burden. (2) Because it is produced by professional manufacturers, the nutrients in meat-based wet food are usually more concentrated than those in ordinary food. It can quickly replenish the energy and nutrition needed by pets, and is especially suitable for pets with weak bodies. (3) Meat-based wet food usually has good palatability, and pets are more likely to accept and eat it. This is especially effective for picky eaters. (4) Meat-based wet food can be squeezed out and fed directly, which is very convenient and especially suitable for busy pet owners. (5) When pets are recovering from serious illness, have weak constitutions, are nursing, or are old, meat-based wet food can be used as a means of quickly replenishing nutrition to help pets quickly recover their strength or enhance their immunity. (6) High-quality meat-based wet food usually contains a variety of nutrients, such as amino acids, lecithin, cod liver oil, complex vitamins, and minerals. These components help maintain the overall health of pets.

[0003] While existing pet food in the form of meat puree has many advantages, the process requires owners to manually open the lid, squeeze out the food from the container, and then reattach the lid to the dispensing tube. This is inconvenient for pet owners (and any residual food adhering to the lid can be unhygienic if it comes into contact with their hands). Therefore, providing a mechanism that automatically opens and closes the lid is essential. Utility Model Content

[0004] To overcome the inconvenience and unhygienic drawbacks of existing pet food bags that require manual removal and installation of the cap before and after feeding, this invention provides an automatic pet food bag opener that, with the combined action of relevant mechanisms, allows users to simply place the pet food bag on the upper part of a rotating head before and after each feeding. The rotating head will automatically lower and unscrew the cap, or automatically rise and tighten the cap. This achieves automatic cap installation and removal, providing convenience to users and resulting in better hygiene.

[0005] The technical solution adopted by this utility model to solve its technical problem is: An automatic wet pet food opener includes a motor reduction mechanism, a drive gear, a rack, a fixed housing, a fixed compartment, a rotating head, and a photoelectric switch. It also includes a detection circuit and a control circuit. The fixed compartment has a fixed groove, with a limit rod fixedly installed on the upper side of the groove. The front end of the fixed compartment has an opening groove. At least two sets of motor reduction mechanisms are included. The drive gear is fixedly installed on the shaft of the first set of motor reduction mechanisms, which is laterally fixed to the front outer end of the fixed compartment, with the drive gear rotating inside the front end of the opening groove. The rear end of the rack is vertically fixed to the front outer end of the housing of the second set of motor reduction mechanisms. A guide block with a shaft hole is fixedly installed on the side of the housing of the second set of motor reduction mechanisms. The second set of motor reduction mechanisms and the rack are... The movable sleeve is in the fixed groove, and the shaft hole of the guide block of the second set of motor reduction mechanisms is movably sleeved on the outside of the limit rod; the upper end of the rotating head is an open structure and the lower end is a closed structure, and the lower end of the rotating head is fixedly installed on the rotating shaft of the second set of motor reduction mechanisms; the fixed chamber is fixedly installed in the fixed shell, and the upper end of the fixed shell has an opening, and the rotating head rotates within the opening; the photoelectric switches are vertically distributed and fixedly installed on one side of the upper end of the fixed shell, and the probe of the photoelectric switch is located outside the upper side of the fixed shell. The detection circuit and the control circuit are installed in the fixed shell. The power output terminal of the detection circuit and the power input terminal of the control circuit are electrically connected. The signal output terminal of the photoelectric switch and the signal input terminal of the detection circuit are electrically connected. The power output terminal of the control circuit and the power input terminals of the two sets of motor reduction mechanisms are electrically connected respectively.

[0006] Furthermore, the rear end of the drive gear meshes with the front end of the spur rack, and the width of the drive gear is smaller than the width of the opening slot.

[0007] Furthermore, the shape of the inside of the fixing groove is the same as the shape of the second set of motor reduction mechanism and the straight rack, and the inner diameter of the fixing groove is larger than the outer diameter of the second set of motor reduction mechanism and the straight rack.

[0008] Furthermore, the outer diameter of the limiting rod is smaller than the inner diameter of the shaft hole of the guide block.

[0009] Furthermore, when the rack is at the lower dead center, the upper end of the rotating head and the upper end of the opening in the fixed shell are at the same height; when the rack is at the upper dead center, the lower end of the rotating head and the upper end of the opening in the fixed shell are at the same height.

[0010] Furthermore, the inner shape of the rotating head is consistent with the shape of the cap of the pet wet food bag.

[0011] Furthermore, the detection circuit includes an electrically connected resistor, a dual D flip-flop, a transistor, and a relay. The positive power input terminal of the dual D flip-flop is connected to the positive power input terminal and the control power input terminal of the relay. The collector of the transistor is connected to the negative power input terminal of the relay. The base of the transistor is connected to one end of the first resistor. The other end of the first resistor is connected to the output terminal of the dual D flip-flop. The negative power input terminal of the dual D flip-flop is connected to the direct reset terminal and the direct set terminal. The data input terminal of the dual D flip-flop is connected to the inverted code output terminal. The signal input terminal of the dual D flip-flop is connected to one end of the second resistor.

[0012] Furthermore, the control circuit includes four electrically connected time switches, with the power input terminals of the first and second time switches connected respectively, and the power input terminals of the third and fourth time switches connected respectively.

[0013] Furthermore, the photoelectric switch, detection circuit, and control circuit can also be replaced by two electrically connected power switches, with the power input terminals of the two power switches connected to the power output terminals of the power module, and the power output terminals of the two power switches connected to the power input terminals of the two sets of motor reduction mechanisms respectively.

[0014] Compared with existing technologies, the advantages of this invention are as follows: Before and after each feeding, the user only needs to place the pet meat paste wet food bag at the top of the rotating head. Under the action of the photoelectric switch, detection circuit, and control circuit, the first set of motor reduction mechanisms controls the rotating head to automatically rise or fall in height via the drive gear and spur gear plate. The second set of motor reduction mechanisms controls the rotating head to unscrew or tighten the movable cap of the meat paste wet food bag. This invention achieves automatic installation and removal of the movable cap, bringing convenience to the user and achieving good hygiene results, thus showing good application prospects. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model excluding the fixed shell.

[0017] Figure 2 This is a schematic diagram of the planar structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the planar structure of this utility model excluding the fixed shell (the rotating head and bottle cap are separate).

[0019] Figure 4 This is a partial planar structural diagram of the present invention (combination of rotating head and bottle cap).

[0020] Figure 5 This is a circuit diagram of Embodiment 1 of this utility model.

[0021] Figure 6 This is a circuit diagram of Embodiment 2 of this utility model. Detailed Implementation

[0022] Figure 1 , 2As shown in Figures 3, 4, 5, and 6, an automatic wet pet food opener includes motor reduction mechanisms M1 and M2, a drive gear 1, a rack 2, a fixed housing 3, a fixed compartment 4, a rotating head 5, a photoelectric switch A2, and a power module A1. It also includes a detection circuit 6 and a control circuit 7. The fixed compartment 4 has a recessed fixing groove 41 running from top to bottom in its center. A limiting rod 42 is fixedly installed on each of the two sides of the upper end of the fixing groove 41. The front end of the fixed compartment 4 has a rectangular opening slot 43 in its center. There are two sets of motor reduction mechanisms. The drive gear 1 is fixedly installed on the rotating shaft of the first set of motor reduction mechanisms M1. The housing of the first set of motor reduction mechanisms M1 is horizontally fixedly installed on the front left outer side of the fixed compartment 4, and the drive gear 1 rotates to the inner side of the front lower end of the opening slot 43. The rear end of the rack 2 is vertically distributed and fixedly installed on the front outer side of the housing of the second set of motor reduction mechanisms M2. The housing of the second set of motor reduction mechanisms M2... A guide block 8 is fixedly installed on the middle of each side of the end. The guide block 8 has a shaft hole in the middle. The second set of motor reduction mechanism M2 and the straight rack 2 are movably sleeved in the fixed groove 41. The shaft holes of the guide blocks 8 on both sides of the upper end of the housing of the second set of motor reduction mechanism M2 are respectively movably sleeved on the outside of the limit rod 42 in the middle of the upper end of the fixed groove. The upper end of the hollow rotating head 5 is an open structure and the lower end is a closed structure. The middle of the lower end of the rotating head 5 is fixedly installed on the rotating shaft of the second set of motor reduction mechanism M2. The lower end of the fixed chamber 4 is fixedly installed in the lower part of the fixed shell 3. The middle of the upper end of the fixed shell 3 has an opening 31 with an inner diameter larger than the outer diameter of the rotating head 5. The lower part of the rotating head 5 is movably located in the opening 31. The photoelectric switch A2 is vertically distributed and fixedly installed on the inner right side of the upper end of the fixed shell 3. The probe of the photoelectric switch A2 is located on the outer right side of the upper end of the fixed shell 3. The power module A1, the detection circuit 6 and the control circuit 7 are installed on the inner circuit board in the upper left end of the fixed shell 3. In Example 1, the power input terminals 1 and 2 of power module A1 are connected to the two poles of the 220V AC power supply via wires. The power output terminals 3 and 4 of power module A1 are connected to the power input terminals of the detection circuit, including the positive power input terminal of relay J1, the emitter of transistor Q1, and the power input terminals 1 and 2 of photoelectric switch A2 via wires. The signal output terminal 3 of photoelectric switch A2 is connected to the signal input terminal of the detection circuit, including the other end of resistor R1 via wires. The normally open power output terminal of relay J1, the emitter of transistor Q1, and the power input terminals 1 and 2 of time switches A4 and A5 are connected via wires. The normally closed power output terminal of relay J1, the emitter of transistor Q1, and the power input terminals 1 and 2 of time switches A6 and A7 are connected via wires. The power output terminals 3 and 4 of time switches A4 and A6 are connected to the positive and negative and negative-positive power input terminals of the first set of motor reduction mechanism M1 via wires. The power output terminals 3 and 4 of time switches A5 and A7 are connected to the positive and negative and negative-positive power input terminals of the second set of motor reduction mechanism M2 via wires.

[0023] Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, the rear end of the drive gear 1 meshes with the front end of the rack 2, and the width of the drive gear 1 is smaller than the width of the opening slot 43. The internal shape of the fixed slot 41 is consistent with the shape of the second set of motor reduction mechanism M2 and rack 2, and the inner diameter of the fixed slot 41 is slightly larger than the outer diameter of the second set of motor reduction mechanism M2 and rack 2. The outer diameter of the limiting rod 42 is smaller than the inner diameter of the shaft hole of the guide block 8. When the rack 2 is at the lower dead center, the upper part of the rotating head 5 and the upper end of the opening in the middle of the fixed shell 3 are at the same height; when the rack 2 is at the upper dead center, the lower end of the rotating head 5 and the upper end of the opening in the middle of the fixed shell 3 are at the same height. The inner shape of the rotating head 5 is the same as that of the bottle cap 91 of the pet wet food bag 9 (the bottle cap is the movable cap, the outer end of the movable cap has multiple strip-shaped protrusions spaced apart, the inner side of the rotating head has multiple strip-shaped indentations spaced apart, and the movable cap can be tightly fitted inside the rotating head). The inner diameter of the rotating head 5 is slightly larger than the outer diameter of the bottle cap 91, and the inner height of the rotating head 5 is slightly smaller than the height of the bottle cap 92. In Example 1, the detection circuit includes resistors R1 and R2, a dual D flip-flop A3, a transistor T1, and a relay J1 connected via circuit board wiring. The positive power input terminal 14 of the dual D flip-flop A3 is connected to the positive power input terminal and the control power input terminal of the relay J1. The collector of the transistor T1 is connected to the negative power input terminal of the relay J1. The base of the transistor T1 is connected to one end of the first resistor R2. The other end of the first resistor R2 is connected to the output terminal 1 of the dual D flip-flop A1. The negative power input terminal 7 of the dual D flip-flop A3 is connected to the direct reset terminal 4 and the direct set terminal 6. The data input terminal 5 of the dual D flip-flop A3 is connected to the inverted code output terminal 2. The signal input terminal 3 of the dual D flip-flop A3 is connected to one end of the second resistor R1. The control circuit includes time switches A4, A5, A6, and A7 connected via circuit board wiring. The power input terminals 1 and 2 of the first time switch A4 and the second time switch A5 are connected respectively. The power input terminals 1 and 2 of the third time switch A6 and the fourth time switch A7 are also connected respectively. In embodiment 2, the photoelectric switch, detection circuit, and control circuit can also be replaced by two electrically connected power switches S1 and S2. The power input terminals 1 and 2 of the two power switches S1 and S2 and the power output terminals 3 and 4 of the power module A1 are connected via wires. The power output terminals 3 and 4, and 5 and 6 of the two power switches S1 and S2 and the positive and negative / positive power input terminals of the two sets of motor reduction mechanisms M1 and M2 are connected via wires.

[0024] Figure 1 , 2As shown in Figures 3, 4, 5, and 6, in Embodiment 1, after the 220V AC power supply enters the power input terminal of the power module A1, pins 3 and 4 of the power module A1 output a stable 12V DC power supply, which enters the power input terminal of the photoelectric switch A2 and the detection circuit. When the user does not need to unscrew the movable cap 91 of the pet meat paste wet food bag 9, since there is no obstruction at the top of the probe of the photoelectric switch A2, pin 3 does not output a high level. Therefore, the time control switches A4 and A5 will not be energized, and the corresponding rotating head will not rotate. When the user needs to unscrew the movable cap 91 of the pet meat paste wet food bag 9, they should use their hand to place the movable cap 91 (the food bag is upside down) into the rotating head 5 from top to bottom. At this moment, the probe of the photoelectric switch A2 is blocked by the right side of the wet food bag 9, and its pin 3 outputs a high level. The high level is stepped down and current limited by resistor R1 to trigger pin 3 of the dual D flip-flop A3. The bistable circuit inside the dual D flip-flop A3 flips for the first time, and its pin 1 outputs a high level. The high level is stepped down and current limited by resistor R2 and enters the base of transistor T1. The NPN transistor T1 conducts and the collector outputs a low level, which enters the negative power input terminal of relay J1. Relay J1 is energized and its control power input terminal and normally open contact terminal are closed. In this way, the two sets of time control switches A4 and A5 will be energized and work. When time switch A4 is powered on, its pins 3 and 4 will output power for a certain period of time (e.g., 4 seconds, the actual time is adjustable) to the positive and negative power input terminals of motor reduction mechanism M1. Then, the shaft of motor reduction mechanism M1 drives the drive gear 1 to rotate counterclockwise. The drive gear 1 drives the spur rack 2 to move downwards to its position and then stops (the synchronous rotating head 5 rotates, causing the movable cover 91 to rotate). When time switch A5 is powered on, its pins 3 and 4 will output power for a certain period of time (e.g., 4 seconds, the actual time is adjustable) to the positive and negative power input terminals of motor reduction mechanism M2. The shaft of motor reduction mechanism M2 drives the rotating head to rotate clockwise. Thus, under the action of the rotating head 5, which gradually descends in height and rotates clockwise, driven by motor reduction mechanism M1, the movable cover 91 of food bag 9 will be unscrewed and placed inside the rotating head 5. At this moment, the user can move the food bag onto the plate and squeeze the wet food into the plate with a little force (since the food bag 9 is no longer blocking the photoelectric switch's probe, pin 3 of the photoelectric switch no longer outputs a high level).

[0025] Figure 1 , 2As shown in Figures 3, 4, 5, and 6, in Example 1, after the wet food is extruded, when the user needs to cover the movable cover 91 of the pet meat paste wet food bag 9, the movable cover 91 of the food bag 9 is placed inside the upper end of the rotating head 5 from top to bottom. At this moment, the probe of the photoelectric switch A2 is blocked again by the right side of the wet food bag 9, and its pin 3 outputs a high level again. The high level is reduced and current limited by the resistor R1 again, triggering the pin 3 of the dual D flip-flop A3. The bistable circuit inside the dual D flip-flop A3 flips again, and its pin 3 stops outputting a high level (the next time it is triggered, the pin 3 of the dual D flip-flop A3 outputs a high level again). The transistor T1 is cut off, and the collector no longer outputs a low level to the negative power input terminal of the relay J1. The relay J1 is de-energized and no longer closes the control power input terminal and the normally closed contact terminal. In this way, the two sets of time control switches A6 and A7 will be energized and work. When time switch A6 is powered on, its pins 3 and 4 will output power for a certain period of time (e.g., 4 seconds, the actual time is adjustable) to the negative and positive power input terminals of motor reduction mechanism M1. Then, the shaft of motor reduction mechanism M1 drives the drive gear 1 to rotate clockwise. The drive gear 1 drives the spur rack 2 to move upwards and then stops (the synchronous rotating head 5 rotates, causing the movable cover 91 to rotate). When time switch A7 is powered on, its pins 3 and 4 will output power for a certain period of time (e.g., 4 seconds, the actual time is adjustable) to the negative and positive power input terminals of motor reduction mechanism M2. The shaft of motor reduction mechanism M2 drives the rotating head to rotate counterclockwise. Thus, under the action of the rotating head 5, which gradually rises in height and rotates counterclockwise driven by motor reduction mechanism M1, the movable cover 91 of food bag 9 will be screwed tightly onto the lower end of the bottleneck of wet food bag 9 and separated from the rotating head. At this moment, the user can move the food bag to complete the feeding process (since the food bag 9 is no longer blocking the photoelectric switch's probe, pin 3 of the photoelectric switch no longer outputs a high level).

[0026] Figure 1 , 2As shown in Figures 3, 4, 5, and 6, in Embodiment 2 (where the fully automatic removal of the movable cover is not required), after the power module A1 is powered on, its pins 3 and 4 output a stable 12V DC power supply, which enters the power input terminals of the two power switches S1 and S2. When the user needs to unscrew the movable cover 91 of the pet meat paste wet food bag 9, they manually place the movable cover 91 of the food bag 9 into the rotating head 5 from top to bottom, and then open the handle of the power switch S1 to the left. Pins 1 and 2 and pins 3 and 4 of the power switch S1 are connected respectively, and the positive and negative power input terminals of the motor reduction mechanism M1 are powered on. As a result, the shaft of the motor reduction mechanism M1 drives the drive gear 1 to rotate counterclockwise. After the drive gear 1 drives the spur rack 2 to move downwards to its position, it stops moving after the power switch S1 is turned off. At the same time as the power switch S1 is turned on, the user puts... When the handle of the power switch S2 is turned to the left, pins 1 and 2 and pins 3 and 4 of the power switch S2 are connected respectively, the positive and negative power input terminals of the motor reduction mechanism M2 are energized, and the rotating shaft of the motor reduction mechanism M2 drives the drive gear 1 to rotate clockwise. Then, under the action of the rotating head 5, which is driven by the motor reduction mechanism M1 to gradually decrease in height and rotate clockwise, the movable cover 91 of the food bag 9 will be unscrewed and placed inside the rotating head (the power switch S2 is turned off after it is in place). At this time, the user can move the food bag onto the plate and squeeze the wet food into the plate with a little force.

[0027] Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, in Example 2 (without the fully automatic removal of the movable cover mode), after squeezing out the wet food, when the user needs to cover the movable cover 91 of the pet meat paste wet food bag 9, the movable cover 91 of the food bag 9 is placed from top to bottom inside the upper end of the rotating head 5. Then, the handle of the power switch S1 is turned to the right, and pins 1 and 2 and pins 5 and 6 of the power switch S1 are connected respectively. The negative and positive power input terminals of the motor reduction mechanism M1 are energized. As a result, the rotating shaft of the motor reduction mechanism M1 drives the drive gear 1 to rotate clockwise. After the drive gear 1 drives the spur rack 2 to move upward to the position, the switch is turned off. After the power switch S1 is turned off, the movement stops. At the same time as the power switch S1 is turned on, the user turns the handle of the power switch S2 to the right, and pins 1 and 2 and pins 5 and 6 of the power switch S2 are connected respectively. The negative and positive power input terminals of the motor reduction mechanism M2 are energized. The rotating shaft of the motor reduction mechanism M2 drives the drive gear 1 to rotate counterclockwise. Thus, under the action of the rotating head 5, which is driven by the motor reduction mechanism M1 to gradually rise in height and rotate counterclockwise, the movable cover 91 of the food bag 9 will be screwed tightly at the lower end of the bottleneck of the wet food bag 9 and separated from the rotating head. At this time, the user can move the food bag to complete the feeding process.

[0028] Figure 5 , 6In the diagram, power module A1 is a finished product of AC 220V to DC 12V power module; resistors R1 and R2 have resistance values ​​of 4.7K and 2.2K respectively; transistor T1 is model 9013; relay J1 is a DC 12V relay; dual D trigger A2 is model CD4013; time switches A4, A5, A6, and A7 are finished products of model KG316T time switches, which have two power input terminals, two power output terminals, and seven setting buttons. Operating the seven setting buttons allows setting the output time of the two power output terminals; photoelectric switch... A2 is a photoelectric switch product of model E3F-DS300C1 (with a distance adjustment knob). It has two power input terminals and one power output terminal. When there is no obstacle above the detector head, the power output terminal does not output power. When there is an obstacle above the detector head, the power output terminal outputs power. The detection distance is adjustable from 50 cm (adjusted to 10 cm in this embodiment). The motor reduction mechanism M1 and M2 are coaxial motor gear reducers with a power of 40W. The power switches S1 and S2 are toggle power switches with two power input terminals and two power output terminals.

[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. Furthermore, it should be understood that although this specification describes embodiments, the embodiments do not necessarily contain only one independent technical solution. This method of description is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic pet wet food can opener comprising a motor reduction mechanism, a driving gear, a straight rack, a fixed shell, a fixed bin, a rotating head, a photoelectric switch, characterized in that, It also includes a detection circuit and a control circuit; the fixed chamber has a fixed groove, and a limit rod is fixedly installed on the upper side of the fixed groove. The front end of the fixed chamber has an open groove. There are at least two sets of motor reduction mechanisms. The driving gear is fixedly installed on the rotating shaft of the first set of motor reduction mechanisms. The first set of motor reduction mechanisms is horizontally fixedly installed on the front outer side of the fixed chamber, and the driving gear rotates inside the front end of the open groove. The rear end of the spur rack is vertically distributed and fixedly installed on the front outer side of the housing of the second set of motor reduction mechanisms. A guide block is fixedly installed on the side of the housing of the second set of motor reduction mechanisms. The guide block has a shaft hole. The second set of motor reduction mechanisms and the spur rack are movably sleeved in the fixed groove. The shaft hole of the guide block of the second set of motor reduction mechanisms is movable. The moving sleeve is located outside the limiting rod; the upper end of the rotating head is open and the lower end is closed, and the lower end of the rotating head is fixedly installed on the rotating shaft of the second set of motor reduction mechanisms; the fixed chamber is fixedly installed inside the fixed shell, and the upper end of the fixed shell has an opening, in which the rotating head rotates; the photoelectric switches are vertically distributed and fixedly installed on one side of the upper end of the fixed shell, and the probe of the photoelectric switch is located outside the upper end of the fixed shell; the detection circuit and the control circuit are installed inside the fixed shell; the power output terminal of the detection circuit and the power input terminal of the control circuit are electrically connected; the signal output terminal of the photoelectric switch and the signal input terminal of the detection circuit are electrically connected; and the power output terminal of the control circuit and the power input terminals of the two sets of motor reduction mechanisms are electrically connected respectively.

2. The automatic pet wet food can opener of claim 1, wherein, The rear end of the drive gear meshes with the front end of the spur rack, and the width of the drive gear is smaller than the width of the slot.

3. The automatic pet wet food can opener of claim 1, wherein, The shape of the inside of the fixed groove is the same as that of the second set of motor reduction mechanism and straight rack, and the inner diameter of the fixed groove is larger than the outer diameter of the second set of motor reduction mechanism and straight rack.

4. An automatic wet pet food opener according to claim 1, characterized in that, The outer diameter of the limit rod is smaller than the inner diameter of the shaft hole of the guide block.

5. An automatic wet pet food opener according to claim 1, characterized in that, When the rack is at the bottom dead center, the upper end of the rotating head and the upper end of the opening in the fixed housing are at the same height. When the rack is at the top dead center, the lower end of the rotating head and the upper end of the opening in the fixed housing are at the same height.

6. The automatic pet wet food can opener of claim 1, wherein, The inner shape of the rotating head is the same as the shape of the cap of the wet pet food bag.

7. The automatic pet wet food can opener of claim 1, wherein, The detection circuit includes electrically connected resistors, dual D flip-flops, transistors, and relays. The positive power input terminal of the dual D flip-flops is connected to the positive power input terminal and the control power input terminal of the relay. The collector of the transistor is connected to the negative power input terminal of the relay. The base of the transistor is connected to one end of the first resistor. The other end of the first resistor is connected to the output terminal of the dual D flip-flops. The negative power input terminal of the dual D flip-flops is connected to the direct reset terminal and the direct set terminal. The data input terminal of the dual D flip-flops is connected to the inverted code output terminal. The signal input terminal of the dual D flip-flops is connected to one end of the second resistor.

8. The automatic pet wet food can opener of claim 1, wherein, The control circuit includes four electrically connected time switches. The power input terminals of the first and second time switches are connected respectively, and the power input terminals of the third and fourth time switches are connected respectively.

9. The automatic pet wet food can opener of claim 1, wherein, The photoelectric switch, detection circuit, and control circuit can also be replaced by two electrically connected power switches. The power input terminals of the two power switches are connected to the power output terminals of the power module, and the power output terminals of the two power switches are connected to the power input terminals of the two sets of motor reduction mechanisms, respectively.

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