CN216702298U

CN216702298U - Liquid seasoning adding device

Info

Publication number: CN216702298U
Application number: CN202122598561.4U
Authority: CN
Inventors: 高烨; 陆盘根; 石皋华
Original assignee: Suzhou Shenyun Robot Co ltd
Current assignee: Suzhou Shenyun Robot Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-06-10
Anticipated expiration: 2031-10-27

Abstract

The utility model provides a liquid seasoning adding device, comprising: a discharge driving mechanism, a stroke control mechanism and a liquid seasoning storage mechanism. According to the liquid seasoning adding device, the laser sensor and the grating ruler are arranged, so that the displacement of the pull rod is accurately controlled, the displacement of the piston which can be matched with the pull rod is correspondingly controlled, and the accurate discharging of the liquid seasoning is realized.

Description

Liquid seasoning adding device

Technical Field

The utility model relates to the technical field of cooking automation, in particular to a liquid seasoning adding device.

Background

Currently, with the development of automation technology, automated cooking products are applied to kitchens of canteens, restaurants, fast food restaurants, family life and the like. The existing automatic cooking products mainly comprise: a cooking robot, a seasoning adding robot, etc. It is well known that the addition of spices has a crucial influence on the taste of dishes. Therefore, a further solution is necessary for how to realize accurate and quantitative seasoning discharging of the seasoning adding robot.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a liquid seasoning adding device to overcome the defects in the prior art.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

a liquid seasoning addition apparatus, comprising: the device comprises a discharge driving mechanism, a stroke control mechanism and a liquid seasoning storage mechanism;

the liquid seasoning storage mechanism includes: the device comprises a shell and a discharging unit;

the inner part of the shell is hollow, the inner part of the shell is divided into an upper space and a lower space by a partition plate, and the upper space of the partition plate forms a storage space for liquid seasonings;

the discharging unit comprises: a liquid outlet cylinder and a piston; the liquid outlet cylinder and the piston are positioned in the lower space of the shell, and the liquid outlet cylinder is communicated with the upper space of the shell; the piston is positioned in the liquid outlet cylinder and can axially move, and the tail end of the piston extends out of the lower space;

the ejection of compact actuating mechanism includes: a pull rod and a power structure; one end of the pull rod can be matched with the extending end of the piston, and the other end of the pull rod is in transmission connection with the power structure;

the stroke control mechanism includes: a second laser sensor and a grating ruler; the grid ruler is positioned on one side of the pull rod and is provided with a plurality of grid bars which are closely arranged along the linear motion direction of the pull rod; the second laser sensor is driven by the power structure to synchronously move along with the pull rod; the second laser sensor is provided with a notch, an opposite light path is formed in the notch, and the notch of the second laser sensor extends to a plurality of grid bars of the grid ruler.

As an improvement of the liquid seasoning adding device of the present invention, the discharging unit further comprises: the liquid inlet pipe, the liquid outlet pipe and the liquid outlet nozzle;

the liquid outlet barrel is arranged in a front-back through manner, and two ends of the liquid outlet barrel are respectively provided with an end cover for sealing the liquid outlet barrel; a hole for communicating the upper space with the lower space is formed in the partition plate inside the shell, the liquid inlet of the front end cover is communicated with the hole through the liquid inlet pipe, and the liquid inlet pipe or the front end cover is also provided with a one-way valve; the liquid outlet nozzle is communicated with a liquid outlet of the front end cover through the liquid outlet pipe, and another one-way valve is further arranged on the liquid outlet pipe or the front end cover.

As an improvement of the liquid seasoning adding device of the present invention, the discharging unit further comprises: the air blowing pipe, the air bag and the pressing block;

the air bag is connected with the liquid outlet nozzle through the air blowing pipe; the pressing block is positioned on one side of the air bag and can be driven by a swinging block arranged below to extrude the air bag, and the swinging block is driven by a motor to pivot through a speed reducer.

As an improvement of the liquid seasoning adding device, the front end cover and the rear end cover are connected with each other through four connecting rods, and the four connecting rods are distributed on two sides of the liquid outlet cylinder.

As an improvement of the liquid seasoning adding device, the liquid inlet pipe is clamped and fixed by a first pipe clamp, the first pipe clamp is fixed on two connecting rods on one side of the liquid outlet cylinder, and a first cavity for accommodating and clamping the liquid inlet pipe is arranged on the first pipe clamp;

the liquid outlet pipe is clamped and fixed by the second pipe clamp, the second pipe clamp is fixed on the two connecting rods on the other side of the liquid outlet cylinder, and a second cavity for accommodating and clamping the liquid outlet pipe is formed in the second pipe clamp.

As the improvement of the liquid seasoning adding device, the discharging driving mechanism also comprises a first laser sensor;

the first laser sensor is arranged on the pull rod and is close to one end of the pull rod; the first laser sensor is provided with a notch, and a correlation light path is formed in the notch; and a stop block which can be matched with the notch of the first laser sensor is arranged at the tail end of the piston.

As an improvement of the liquid seasoning adding device, the power structure comprises: the device comprises a stepping motor, a speed reducer, a first driving wheel, a second driving wheel, a third driving wheel and a driving belt;

the third driving wheel is positioned above the space between the first driving wheel and the second driving wheel, and the three driving wheels are linked through the driving belt; the stepping motor is in transmission connection with a third driving wheel through a speed reducer, and the pull rod is connected with a transmission belt between the first driving wheel and the second driving wheel.

As the improvement of the liquid seasoning adding device, the whole of the stepping motor and the speed reducer is adjustably arranged on a base through a connecting plate;

the machine base is also provided with a waist-shaped adjusting hole and an adjusting groove; the connecting plate is locked on the machine base through a bolt penetrating through the waist-shaped adjusting hole, and the sliding block on the connecting plate can slide along the adjusting groove while being adjusted up and down along the connecting plate.

As an improvement of the liquid seasoning adding device of the present invention, the discharging driving mechanism further comprises: a slide block and a guide rail; the guide rail is arranged on one side of the pull rod along the linear motion direction of the pull rod, the pull rod is connected with the transmission belt through the sliding block, and the sliding block can slide along the guide rail simultaneously.

As an improvement of the liquid seasoning adding apparatus of the present invention, the stroke control mechanism further comprises: a baffle plate and a position sensing switch;

the position induction switch is divided into a front position, a middle position and a rear position along the movement direction of the pull rod and is respectively arranged on one side of the pull rod; the middle position induction switch corresponds to the original position of the pull rod, the front position induction switch corresponds to the forward limit position of the pull rod, and the rear position induction switch corresponds to the backward limit position of the pull rod; the separation blade and the position inductive switch are matched, when the separation blade and the position inductive switch are oppositely arranged, the position inductive switch can sense the position of the separation blade, and the separation blade is driven by the power structure to move synchronously along with the pull rod.

Compared with the prior art, the utility model has the beneficial effects that: according to the liquid seasoning adding device, the laser sensor and the grating ruler are arranged, so that the displacement of the pull rod is accurately controlled, the displacement of the piston which can be matched with the pull rod is correspondingly controlled, and the accurate discharging of the liquid seasoning is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of an embodiment of a liquid seasoning adding apparatus according to the present invention;

FIG. 2 is a perspective view of the liquid seasoning storage apparatus of FIG. 1;

FIG. 3 is a perspective view of the housing of FIG. 2;

FIG. 4 is an enlarged perspective view of the discharge unit of FIG. 2;

FIG. 5 is an enlarged perspective view of the discharge unit of FIG. 2 at another angle;

FIG. 6 is a cross-sectional view of the discharging unit shown in FIGS. 4 and 5

FIG. 7 is a schematic perspective view of the discharge driving mechanism and the stroke control mechanism of FIG. 1;

FIG. 8 is a schematic perspective view of the travel control mechanism of FIG. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, an embodiment of the utility model provides a liquid seasoning adding device, which includes: a discharge driving mechanism, a stroke control mechanism and a liquid seasoning storage mechanism 400.

As shown in fig. 2 and 3, the liquid seasoning storage mechanism 400 includes: a housing 40 and a discharge unit 41.

The interior of the housing 40 is hollow, and the interior of the housing 40 is divided into an upper space and a lower space by a partition 401. Wherein the upper space of the partition 401 forms a storage space for liquid seasoning, which is opened or closed at the top by a cover plate 43. Wherein the cover plate 43 is pivotally connected to the top of the housing 40 at an edge position and has a shape corresponding to the opening at the top of the housing 40, such that the cover plate 43 can pivotally open or close the housing 40 to facilitate the introduction of the liquid seasoning into the upper space of the housing 40. In addition, a handle adapted to operate the pivoting opening and closing of the cover plate 43 is provided on the cover plate 43.

The housing 40 is further provided with a locking mechanism for locking the cover plate 43. This locking mechanism includes: a first locking assembly 44 and a second locking assembly 45.

The first locking component 44 is used for locking the front end of the cover plate 43 and is arranged at the bottom of the front end of the cover plate 43. The first locking assembly 44 includes: a latch 440 and a spring 441 disposed between the latch 440 and the bottom protrusion of the cover plate 43.

Correspondingly, the housing 40 is further provided with a locking hole matched with the lock catch 440. The lock catch 440 is initially inserted into the lock hole by the spring 441. Thus, when the latch 440 is pressed, it can be disengaged from the locking hole, so that the front end of the cover 43 can be unlocked. In one embodiment, the lock catch 440 has a U-shaped structure, one end of which extends out of the through hole at the front end of the cover plate 43, and the other end of which is inserted into the lock hole. Wherein, the part extending from the through hole forms a pressing part when the lock catch 440 is unlocked.

The second locking assembly 45 is used for locking the side edge of the cover plate 43 and is arranged on the left side or the right side of the cover plate 43. The second locking assembly 45 includes: a latch 450 and a spring 451 disposed between the latch 450 and a bottom protrusion of the cover plate 43.

Latch 450 is attached to the top of cover plate 43 at the end where the handle extends into housing 40. At this point, one end of the spring 451 abuts the bottom protrusion of the cover 43, and the other end of the spring is sleeved on the latch 450 and abuts the end of the handle extending into the housing 40. Correspondingly, the housing 40 is also provided with a socket for mating with the latch 450. The latch 450 is initially inserted into the receptacle under the action of the spring 451. Thus, when the handle slot latch 450 is disengaged from the receptacle, the side of the cover plate 43 may be unlocked. Meanwhile, the top of the cover plate 43 is provided with a waist-shaped hole suitable for the handle control bolt 450 to perform unlocking action. In addition, to facilitate the installation of the liquid seasoning adding apparatus, the housing 40 has four connecting posts 46 on the inside thereof.

As shown in fig. 4 and 5, the discharging unit 41 is used for controlling the discharging of the liquid seasoning above. The discharging unit 41 is installed in a lower space of the housing 40, and includes: liquid outlet cylinder 410, liquid inlet pipe 411, liquid outlet pipe 412, piston 413, liquid outlet nozzle 414, gas blowing pipe 415 and gas bag 416.

The liquid discharge tube 410 is provided to penetrate in the front and rear direction, and end

caps

417 and 418 for sealing the liquid discharge tube 410 are attached to both ends thereof. The front end cap 417 is provided with a liquid inlet and a liquid outlet communicated with the interior of the liquid outlet cylinder 410. The rear end cap 418 is secured to the opening in the rear side wall of the lower space by screw locking. Meanwhile, the front and rear end covers 417, 418 are also connected to each other by four connecting rods 419, and the four connecting rods 419 are distributed on both sides of the liquid outlet cylinder 410.

As shown in fig. 6, in order to facilitate the liquid flavoring stored in the upper space of the housing 40 to flow into the liquid outlet barrel 410, a partition 401 inside the housing 40 is provided with a hole for communicating the upper space and the lower space, and the liquid inlet of the front end cover 417 is communicated with the hole through a liquid inlet pipe 411. Accordingly, the front end cap 417 has the inlet channel 4170 therein. Thereby, the liquid seasoning flows into the liquid inlet flow channel 4170 through the liquid inlet.

The inlet pipe 411 or the front end cover 417 is further provided with a check valve 4110, and the check valve 4110 allows the liquid seasoning to flow into the outlet barrel 410 from the upper space without flowing back into the upper space from the outlet barrel 410. The liquid inlet pipe 411 is clamped and fixed by a first pipe clamp 4111, and the first pipe clamp 4111 is fixed to two connecting rods 419 on one side of the liquid outlet cylinder 410. Correspondingly, the first pipe clamp 4111 is provided with a first cavity for holding the liquid inlet pipe 411.

The outlet nozzle 414 is used for discharging the liquid seasoning stored in the outlet barrel 410, and is communicated with the outlet of the front end cover 417 through the outlet pipe 412. Correspondingly, the front end cap 417 has a liquid outlet channel 4171 therein, which is communicated with the liquid inlet channel 4170. Thus, the liquid seasoning can flow through the liquid inlet flow path 4170, the liquid outlet flow path 4171 and further flow out from the liquid outlet.

Another one-way valve 4120 is provided in outlet tube 412 or front end cap 417 to allow liquid flavoring to flow from outlet nozzle 410 to outlet nozzle 414 without flowing back from outlet nozzle 414 to outlet nozzle 410. Also, the outlet nozzle 414 is provided in a U-shape. Thus, the arcuate curvature of spout 414 prevents dripping of the residue in spout 412. The liquid outlet pipe 412 is held and fixed by a second pipe clamp 4121, and the second pipe clamp 4121 is fixed to two links 419 on the other side of the liquid outlet cylinder 410. Correspondingly, the second pipe clamp 4121 is provided with a second cavity for accommodating and clamping the liquid outlet pipe 412.

A piston 413 is axially slidably mounted in the cartridge 410, and a rear end of the piston 413 protrudes from a rear end cap. In this manner, when the piston 413 is pulled out, the liquid seasoning in the upper space of the housing 40 can be sucked into the liquid outlet cylinder 410 due to the negative pressure; when the piston 413 is pushed back, the piston 413 can discharge the liquid seasoning in the liquid outlet barrel 410 through the liquid outlet nozzle 414.

Air bag 416 is connected to outlet nozzle 414 via air blowing tube 415, and is used for blowing air into outlet nozzle 414 to blow out residual liquid when liquid discharge from outlet nozzle 414 is completed, so as to further prevent liquid from dripping from outlet nozzle 414. Accordingly, spout 414 is connected to spout 412 and spout 415 by a tee 419, and the volume inside bladder 416 is at least greater than the sum of the volumes of spout 415 and spout 414, so as to prevent liquid from flowing back into the bladder. In order to fix the air bag 416, the first tube clamp 4111 is provided with a third cavity for accommodating and clamping the air bag 416.

In addition, in order to squeeze the air bag 416, a pressing block 420 is further pivotally connected to the first tube clamp 4111, and the pressing block 420 is located above the air bag 416 and can press the cavity through its own pivot, so that the gas in the cavity is discharged, and then the residual liquid in the liquid outlet nozzle 414 is blown out. Correspondingly, the liquid seasoning storage mechanism also has a swinging block which can be driven by a motor 422 through a speed reducer to pivot. Thus, when the swing block swings pivotally, the pressing block 420 can be driven to pivot, and the air bag 416 is squeezed to blow air.

As shown in fig. 7 and 8, the discharging driving mechanism 50 discharges the liquid flavoring by driving the piston 413 of the liquid flavoring storage mechanism 400 to draw. This ejection of compact actuating mechanism 50 includes: a pull rod 51, a first laser sensor 52, a stepping motor 53, a speed reducer 54, a first driving wheel 55, a second driving wheel 56, a third driving wheel 57 and a driving belt 58.

Wherein, one end of the pull rod 51 is provided with a projection 510, and the projection 510 can be matched with the extended tail end of the piston 413, so as to facilitate the control of the drawing of the piston 413. The position of the pull rod 51 thus defines the blanking position. Accordingly, the rear end of the piston 413 is provided with a downwardly disposed notch 4130 that is capable of engaging with the protrusion 510. The other end of the pull rod 51 is in transmission connection with a power structure formed by a stepping motor 53, a speed reducer 54, a first transmission wheel 55, a second transmission wheel 56 and a transmission belt 58, and the power structure can drive the pull rod 51 to move forward or backward.

Thus, when the projection 510 of the pull rod 51 is received in the bayonet of the tail end of the corresponding piston 413, the transmission structure drives the pull rod 51 to retreat, so that the liquid seasoning can be sucked by the piston 413, and the liquid seasoning can be discharged when the transmission structure drives the pull rod 51 to reset.

The first laser sensor 52 is installed at one end of the pull rod 51 and is disposed adjacent to the protrusion 510 on one end of the pull rod 51, and is used for detecting whether the piston 413 is smoothly engaged with the protrusion 510 on the pull rod 51 and whether the piston 413 is assembled on the liquid seasoning storage mechanism 400.

The first laser sensor 52 has a slot 520, and the slot 520 forms a correlation optical path therein. Accordingly, the pistons 413 are each provided with a stop 4131 at their rear ends. When the liquid flavoring storage mechanism 400 is discharged, if the opposite light path is blocked, it indicates that the piston 413 is assembled on the liquid flavoring storage mechanism 400, and meanwhile, the projection 510 on the pull rod 51 is smoothly matched with the bayonet 4130. This facilitates the subsequent operation of the pull rod 51.

As described above, the power structure can move the pull rod 51 forward or backward. Specifically, the first driving wheel 55 and the second driving wheel 56 are arranged at intervals along the moving direction of the pull rod 51, and a bearing is further arranged between the wheel axle of each driving wheel and the fixed seat where the wheel axle is located.

The third transmission wheel 57 is located above the first transmission wheel 55 and the second transmission wheel 56, and the three transmission wheels are linked through a transmission belt 58, and the three transmission wheels keep the transmission belt 58 in a tensioned state. The stepping motor 53 is in transmission connection with a third transmission wheel 57 through a speed reducer 54. The belt 58 generally forms a triangle, depending on the arrangement of the three drive wheels. At this time, the pull rod 51 is connected to the belt 58 between the first and second driving wheels. In this way, when the stepping motor 53 drives the third transmission wheel 57 to pivot through the speed reducer 54, the transmission belt 58 can drive the pull rod 51 to move forward or backward.

In order to make the pull rod 51 perform stable linear reciprocating motion, the discharging driving mechanism 50 further includes: a slide 59 and a guide 591. At this time, the guide rail 591 is located at one side of the pull rod 51. The pull rod 51 is connected to the drive belt 58 via a slide 59, and the slide 59 is simultaneously slidable along the guide rail 591. In this way, the slider 59 can be guided and slid along the guide rail 591 while the pull rod 51 is advanced or retracted.

In addition, the third transmission wheel 57 can be adjusted up and down, so that the distance between the third transmission wheel 57 and the first transmission wheel 55 and the second transmission wheel 56 below the third transmission wheel can be adjusted, and further the continuous tensioning of the transmission belt 58 can be realized by the aid of the three transmission wheels. Accordingly, the stepping motor 53 and the reduction gear 54 are integrally adjustably mounted to the housing 593 through a connecting plate 592. Wherein, the machine base 593 is provided with a waist-shaped adjusting hole and an adjusting groove. The connecting plate 592 is locked to the housing 593 by a bolt passing through a kidney-shaped adjustment hole, and the slider 59 on the connecting plate 592 is capable of guided sliding along the adjustment groove while the connecting plate 592 is adjusted up and down. In one embodiment, the waist-shaped adjusting holes are respectively opened at both sides of the upper portion of the machine base 593, and the adjusting groove is opened at the area between the waist-shaped adjusting holes at both sides.

Although the stepping motor 53 can control the movement of the pull rod 51 by a certain stroke, the precise movement of the pull rod 51 by the stepping motor 53 cannot be realized. Therefore, precise movement of the pull rod 51 by means of the stroke control mechanism 60 is required.

The stroke control mechanism 60 is used to control the distance that the pull rod 51 is advanced or retracted to achieve accurate discharge of the liquid seasoning. This arrangement takes into account that the stroke of movement of the piston 413 as it is drawn is linked to the amount of seasoning dispensed. For example, when the piston moves a certain distance to flow out a certain volume of liquid flavoring, the corresponding volume of liquid flavoring is discharged. Therefore, the accurate quantitative discharging of the liquid seasoning can be realized by accurately controlling the movement distance of the pull rod 51.

Located on one side of discharge drive mechanism 50 is a stroke control mechanism 60, which includes: a second laser sensor 61, a shutter 62, a position sensing switch 63, and a grating ruler 64.

The grid ruler 64 is located at one side of the pull rod 51, and is provided with a plurality of grid bars which are closely arranged along the linear motion direction of the pull rod 51, and the plurality of grid bars cover the motion stroke of the pull rod 51. The second laser sensor 61 is connected to the first transmission wheel 55 and the second transmission wheel 56 via a belt 58. Thus, the second laser sensor 61 can move synchronously with the advance or retreat of the draw bar 51. Meanwhile, the second laser sensor 61 has a notch in which a correlation optical path is formed. The notches of the second laser sensor 61 extend to the bars of the grid ruler 64.

Thus, when the stepping motor 53 is operated, it can drive the second laser sensor 61 to move synchronously with the pull rod 51, and make its notch move relatively along the bars of the grating ruler 64. Because gaps are formed among the plurality of grids, when the notch moves along the plurality of grids relatively, the correlation light path in the notch is periodically shielded and communicated, and the communication of the correlation light path is performed every two times, which indicates that the second laser sensor 61 moves by a distance of one grid width. Therefore, the distance of the second laser sensor 61 moving along with the pull rod 51 can be accurately fed back according to the times of the shielding and the communication of the correlation light path.

When the liquid seasoning is discharged, the liquid seasoning in corresponding volume parts is discharged because the piston moves for a certain distance. Therefore, according to the required amount of the seasoning, the displacement of the pull rod 51 required to move can be correspondingly obtained. As described above, the second laser sensor 61 and the grid ruler 64 can be used for accurately controlling the moving distance of the pull rod 51, so that the moving distance of the pull rod 51 can be controlled by the second laser sensor 61 and the grid ruler 64, thereby realizing accurate discharging of the liquid seasonings and further meeting the actual cooking requirement of dishes.

Because the forward movement of the pull rod 51 correspondingly pushes the piston 413 to discharge, and the backward movement of the pull rod 51 correspondingly pulls the piston to suck materials. Therefore, it is necessary to calibrate the initial position of the pull rod 51 as the origin, and calibrate the two extreme positions of the movement of the pull rod 51 at the same time, so that the piston 413 can move within a certain range.

In order to achieve the above purpose, the position sensing switches 63 are divided into front, middle and rear positions along the moving direction of the pull rod 51 and are respectively arranged on one side of the pull rod 51, the middle position sensing switch 63 corresponds to the original position of the pull rod 51, the front position sensing switch 63 corresponds to the limit position of the forward movement of the pull rod 51, and the rear position sensing switch 63 corresponds to the limit position of the backward movement of the pull rod 51.

The blocking piece 62 is used for being matched with the position sensing switch 63, and when the blocking piece 62 and the position sensing switch 63 are oppositely arranged, the position sensing switch 63 can sense the position of the blocking piece 62. Accordingly, the blocking piece 62 is fixed on the sliding block 59 on which the pull rod 51 is arranged, so that the blocking piece 62 can move synchronously with the advance or retreat of the pull rod 51. Meanwhile, when the pull rod 51 is located at the initial position, the blocking piece 62 is arranged opposite to the middle position sensing switch 63.

When the liquid seasoning is discharged, it is first judged whether the pull rod 51 is located at the initial position by the intermediate position sensing switch 63. When the pull rod 51 is located at the initial position, the stepping motor 53 drives the piston to retreat through the pull rod 51 under the precise control of the second laser sensor 61 and the grid ruler 64 according to the amount of the required liquid seasoning, so as to realize the suction of the liquid seasoning. Then, the stepping motor 53 drives the piston to advance through the pull rod 51 to discharge the liquid flavoring, and meanwhile, the pull rod 51 returns to the initial position again.

In addition, during the process of the liquid seasoning, if the blocking piece 62 moves along with the pull rod 51 to be opposite to the position sensing switch 63 at the front and rear part, which indicates that the pull rod 51 has moved to the extreme position, the position sensing switch 63 at the rear part can feed back a signal to stop the operation of the stepping motor 53.

In conclusion, the liquid seasoning adding device provided by the utility model is provided with the laser sensor and the grating ruler, so that the displacement of the pull rod is accurately controlled, the displacement of the piston which can be matched with the pull rod is correspondingly controlled, and the accurate discharging of the liquid seasoning is realized.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A liquid seasoning adding apparatus, characterized by comprising: the device comprises a discharge driving mechanism, a stroke control mechanism and a liquid seasoning storage mechanism;

the stroke control mechanism includes: a second laser sensor and a grating ruler; the grid ruler is positioned on one side of the pull rod and is provided with a plurality of grid bars which are closely arranged along the linear motion direction of the pull rod; the second laser sensor is driven by the power structure to synchronously move along with the pull rod; the second laser sensor is provided with a notch, a correlation light path is formed in the notch, and the notch of the second laser sensor extends to a plurality of grid bars of the grid ruler.

2. The liquid seasoning addition apparatus of claim 1 wherein the outfeed unit further comprises: the liquid inlet pipe, the liquid outlet pipe and the liquid outlet nozzle;

the liquid outlet barrel is arranged in a front-back through manner, and two ends of the liquid outlet barrel are respectively provided with an end cover for sealing the liquid outlet barrel; a hole for communicating the upper space with the lower space is formed in the partition plate inside the shell, the liquid inlet of the front end cover is communicated with the hole through the liquid inlet pipe, and a one-way valve is further arranged on the liquid inlet pipe or the front end cover; the liquid outlet nozzle is communicated with a liquid outlet of the front end cover through the liquid outlet pipe, and another one-way valve is further arranged on the liquid outlet pipe or the front end cover.

3. The liquid seasoning adding apparatus of claim 2 wherein the tapping unit further comprises: the air blowing pipe, the air bag and the pressing block;

4. The liquid flavoring adding device according to claim 2, wherein said front and rear end caps are connected to each other by four connecting rods, said four connecting rods being disposed on both sides of said liquid outlet cylinder.

5. The liquid seasoning adding apparatus according to claim 4 wherein the liquid inlet pipe is held and fixed by a first pipe clamp fixed to the two connecting rods on one side of the liquid outlet cylinder, and the first pipe clamp is provided with a first cavity for receiving and holding the liquid inlet pipe;

the liquid outlet pipe is clamped and fixed by a second pipe clamp, the second pipe clamp is fixed on the two connecting rods on the other side of the liquid outlet cylinder, and a second cavity for accommodating and clamping the liquid outlet pipe is formed in the second pipe clamp.

6. The liquid flavoring adding device according to claim 1, wherein said outfeed drive mechanism further comprises a first laser sensor;

7. The liquid flavoring adding device according to claim 1, wherein said power structure comprises: the device comprises a stepping motor, a speed reducer, a first driving wheel, a second driving wheel, a third driving wheel and a driving belt;

8. The liquid seasoning adding apparatus as claimed in claim 7 wherein the stepping motor and the speed reducer are integrally adjustably mounted to a base through a connecting plate;

9. The liquid flavoring adding device according to claim 1, wherein said outfeed drive mechanism further comprises: a slide block and a guide rail; the guide rail is arranged on one side of the pull rod along the linear motion direction of the pull rod, the pull rod is connected with the transmission belt through the sliding block, and the sliding block can slide along the guide rail simultaneously.

10. The liquid seasoning addition device of claim 1 wherein the stroke control mechanism further comprises: a baffle plate and a position sensing switch;