CN111387298A

CN111387298A - Automatic production method of dried tofu

Info

Publication number: CN111387298A
Application number: CN202010406378.7A
Authority: CN
Inventors: 张亚琦; 邹珊珊; 邹祖才
Original assignee: Maanshan Jiangxin Oasis Foods Co ltd
Current assignee: Maanshan Jiangxin Oasis Foods Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-07-10

Abstract

The invention discloses an automatic production method of dried tofu, and belongs to the technical field of production of bean products. The method comprises the following steps: the dried tofu is conveyed to a specific station for metering through a feeding mechanism after being placed in a basket, then conveyed to a bagging mechanism through a conveying mechanism for bagging, conveyed to a vacuum packaging machine through a conveying belt for vacuum packaging, and finally boxed and stored in a warehouse. The automatic dried tofu production system has the advantages that the feeding mechanism, the conveying mechanism, the bagging mechanism and the vacuum packaging machine are optimally designed, the automatic level of dried tofu production is improved, particularly, the air path pipeline of the first cylinder of the vacuum packaging machine is connected with the vacuum pump, the first cylinder is driven to work by air pumped out by the vacuum pump during vacuum packaging, and the automatic turnover of the vacuum turnover cover is realized, so that manpower is greatly liberated, the production efficiency is improved, the enterprise cost is reduced, meanwhile, the cyclic utilization of resources is realized, and the energy consumption is reduced.

Description

Automatic production method of dried tofu

Technical Field

The invention belongs to the technical field of bean product production, and particularly relates to an automatic production method of dried bean curd.

Background

The dried bean curd is a short name of dried bean curd, one of Chinese traditional bean products, and is a reprocessing product of bean curd. Salty, fragrant and tasty, tough in hard middle and can not be damaged after being stored for a long time, and is a delicious food in all Chinese major vegetable lines. Produced in south China, the south of the Yangtze river. The dried bean curd is rich in nutrition, contains a large amount of protein, fat and carbohydrate, and also contains various minerals required by human body such as calcium, phosphorus, iron, etc. The dried bean curd is added with seasonings such as salt, fennel, pepper, aniseed, dried ginger and the like in the preparation process, is fragrant and fresh, is not tired of being eaten for a long time, and is known as 'vegetarian ham'.

The bean products are made from soybeans, such as bean curd, bean curd strips, dried bean curd, soybean milk, uncongealed beancurd, dried bean curd sticks, bean sprouts and the like, because the soybeans are processed, the protein content is not reduced, the digestibility is also improved, meanwhile, various bean products are delicious, the appetite is promoted, the bean sprouts also contain rich vitamin C, the bean sprouts can play a role of a regulator in winter and spring in the lack of vegetables, the nutrition of the bean products is mainly reflected in the rich protein content, the amino acids essential to human bodies contained in the bean products are similar to animal proteins, the bean products also contain minerals required by human bodies, such as calcium, phosphorus, iron and the like, contain vitamins Bl, B2 and cellulose, and the bean products do not contain cholesterol, so that people advocate that more people eat the bean products for obesity, arteriosclerosis, hyperlipidemia, hypertension, coronary heart disease and the like, and the bean products have single nutrition source, which is not applicable to healthy groups, the soy product can be used as one of the sources of protein, and is an important component of the balanced diet.

Along with the continuous improvement of the living standard of people, the demand of various convenient foods is greatly increased, and the rapid development of the packaging industry of China is further promoted. The packaged dried tofu not only can play a role in protection and beauty, but also can be sealed, dampproof and anti-collision. At present, manual operation is mostly adopted for the packaging method of bagged dried tofu, workers carry the dried tofu to a specified place to be placed, then the bag mouth of the packaging bag is opened manually, then the packaging bag is opened manually, the dried tofu is packed into the packaging bag, and finally the packaging bag containing the dried tofu is taken to a packaging device by the workers to be packaged with the bag mouth, the production efficiency of the process is very low, and the packaging bag is influenced by the proficiency of the workers, the production quality is difficult to control, the quality consistency of the produced dried tofu is poor, a large number of workers need to be supported by manufacturers, and the labor cost is high.

In addition, after the dried tofu is subjected to vacuum packaging, the oxidation resistance of the dried tofu can be improved, and the deterioration of the dried tofu can be slowed down, so that the purpose of long-term storage can be achieved. In the prior art, most of the vacuum packaging machines for dried tofu adopt a vacuum packaging machine, and the machine needs to use manpower to lift a vacuum cavity cover and move the vacuum cavity cover to the other side to start vacuum packaging. When the size of the vacuum cover is large, the vacuum cover is heavy or the moving distance is too large, operators need to spend large effort to overturn the vacuum cover from one working chamber to the other working chamber, manual operation is not facilitated, and production efficiency is low.

Disclosure of Invention

1. Problems to be solved

The invention aims to overcome the defects that the existing dried tofu production has relatively low automation degree, needs a large amount of workers to operate, has low production efficiency, is influenced by the operating proficiency of the workers, and has poor quality consistency and high labor cost, and provides the automatic dried tofu production method. By adopting the technical scheme of the invention, the problems can be effectively solved, and manpower is liberated, thereby being beneficial to improving the production efficiency and reducing the enterprise cost.

2. Technical scheme

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the invention relates to an automatic production method of dried tofu, which comprises the following operation steps:

the method comprises the following steps: conveying the dried tofu to a specific station for metering through a feeding mechanism after the dried tofu is placed in a basket;

the feeding mechanism comprises a support frame and a carrying plate, the carrying plate is slidably mounted on the support frame, and dried tofu is placed on the carrying plate after being placed in a basket and lifted to be conveyed to a specific station for metering;

step two: conveying the metered dried tofu to a bagging mechanism through a conveying mechanism for bagging;

the measured dried tofu is placed in a punching cylinder of a conveying mechanism and conveyed to a punching station along with a conveying guide rail, and a punching block is adopted to punch the dried tofu in the punching cylinder out to a packaging bag of a bagging mechanism to complete bagging;

step three: conveying the bagged dried tofu to a vacuum packaging machine through a conveying belt for vacuum packaging;

placing the unsealed bagged dried tofu on a heat sealing strip on a supporting table of a vacuum packaging machine, covering a vacuum flip cover to form an vacuumizing chamber, and starting a vacuum pump to vacuumize the vacuumizing chamber; the gas pumped out by the vacuum pump is conveyed to the first cylinder through a pipeline; simultaneously heating the heat sealing strip to heat seal the packaging bag; then, starting a first cylinder to drive the vacuum turnover cover to turn up, and taking down the packaged dried tofu;

step four: and (5) boxing and storing the vacuum-packaged dried tofu in a warehouse.

Furthermore, the support frame is provided with a slide rail and a chain wheel; the carrying plate is provided with a first sliding block and a second sliding block which are matched with the sliding rail, and the first sliding block and the second sliding block are both connected with the chain wheel; a second driving motor is adopted to drive the chain wheel to rotate, the first sliding block and the second sliding block are driven to slide on the sliding rail, so that the carrying plate can lift along the supporting frame upright post, and dried tofu is conveyed to a specific station.

Furthermore, when the dried tofu is measured, an electronic scale is arranged for weighing.

Furthermore, the punching cylinders comprise a plurality of punching blocks which are uniformly arranged on the conveying guide rail, the punching blocks are arranged above the punching stations, the discharging cylinders are correspondingly arranged below the punching blocks, and piston rods of the cylinders are fixedly connected with the punching blocks; determining the size of the punching cylinder according to the specification of the dried tofu; the dried tofu is conveyed to a stamping station, the cylinder controls the stamping block to fall down to stamp the dried tofu out, and the dried tofu is discharged into a packaging bag prepared in advance by a bagging mechanism through a discharging barrel.

Furthermore, a plurality of pairs of supporting clamps are arranged on a rotating disc on the bagging mechanism at equal intervals along the circumferential direction of the rotating disc, the packaging bags are grabbed by a bag-feeding mechanical arm and are conveyed to the supporting clamps for fixing, the rotating disc is rotated to a bag-opening unit to open the bag opening of the packaging bag, the rotating disc continues to rotate to a bagging station, and the packaging bag is placed below a discharge cylinder; after the dried tofu is bagged, the disc is rotated to transfer the dried tofu to the conveying belt.

Furthermore, the conveying belt conveys the unsealed bagged dried tofu to a vacuum packaging machine, and the vacuum packaging machine adopts a double-chamber vacuum packaging machine.

Furthermore, the supporting table is connected with the vacuum flip cover through a swing arm connecting rod, and the first cylinder is adopted to drive the swing arm connecting rod to swing back and forth to realize the turnover of the vacuum flip cover.

Furthermore, the first cylinder is hinged to a first bottom plate of the vacuum packaging machine, an air path pipeline of the first cylinder is connected with a vacuum pump, and a piston rod of the first cylinder is connected with a mounting shaft of the swing arm connecting rod through a mounting plate after being connected with the swing rod.

Furthermore, the first cylinder and the vacuum pump are controlled to start and stop by a P L C controller.

Furthermore, when vacuum packaging is carried out, the supporting tables on the two sides alternately work, when the supporting table on one side is in a working state, bagged dried tofu to be sealed is placed in the supporting table in a non-working state, and after the sealing of the bagged dried tofu on one side is finished, the vacuum turnover cover is automatically turned up and pressed to the bagged dried tofu to be sealed for vacuum packaging under the driving of the first cylinder; and taking off the sealed bagged dried tofu and transporting the bagged dried tofu to a boxing station, and then placing the bagged dried tofu to be sealed again for the next vacuum packaging.

3. Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the automatic dried tofu production method, the feeding mechanism, the conveying mechanism, the bagging mechanism, the conveying belt and the vacuum packaging machine are adopted for dried tofu production, manual operation or semi-manual semi-automatic production of most existing dried tofu production enterprises is replaced, the automation degree of dried tofu production is improved, manpower is liberated further, and therefore the problem of poor dried tofu quality consistency caused by the proficiency degree of worker operation can be effectively solved; on the other hand, the production efficiency is obviously improved, the demand for operators is reduced, and further more economic benefits can be brought to enterprises. Meanwhile, the vacuum packaging machine optimally designs the specific structure of the vacuum packaging machine, and the first cylinder is arranged, particularly the gas path pipeline of the first cylinder is connected with the vacuum pump, so that waste gas pumped out by the vacuum pump during working is conveyed into the first cylinder for secondary utilization, the cyclic utilization of resources is favorably realized, and the energy consumption is reduced.

(2) According to the automatic dried tofu production method, the piston rod of the first cylinder is connected with the mounting shaft of the swing arm connecting rod on the vacuum packaging machine through the swing rod and the mounting plate, the piston rod of the first cylinder is driven to stretch through waste gas pumped out by the compression vacuum pump, so that the swing arm connecting rod is driven to swing, automatic turnover of the vacuum turnover cover is realized, manual operation is not needed, safety production is guaranteed, and working efficiency is improved.

(3) According to the automatic dried tofu production method, the vacuum pump and the first cylinder are controlled to be started and stopped by the P L C controller, the vacuum cover can swing back and forth alternately by simple P L C programming, air suction, heat sealing and other treatment can be performed on dried tofu, the operation is simple, the operation is easy, the operation is convenient, meanwhile, different air suction time and heat sealing time need to be controlled according to the difference of specifications, materials and the like of different packaging bags, the P L C controller is used for controlling, relevant parameters can be directly modified on the control panel, and therefore the problem of uncertain factors caused by manual operation can be solved, and the packaging quality is effectively guaranteed.

(4) According to the automatic dried tofu production method, the specific structure of the feeding mechanism is optimally designed, specifically, the object stage of the feeding mechanism is connected with the support frame through the chain wheel, and the chain wheel is driven to rotate through the motor to drive the object stage to lift along the support frame upright post, so that dried tofu is conveyed to a specific station for metering, manual direct carrying is avoided, time and labor are saved, and the working efficiency is effectively improved.

(5) According to the automatic dried tofu production method, the transportation mechanism and the bagging mechanism are matched to operate to realize the bagging operation of dried tofu, the transportation mechanism is provided with the transportation guide rail, the punching cylinder, the punching block and the discharging cylinder, and the specification of the punching cylinder is customized according to the size of the dried tofu, so that the requirements of dried tofu packaging with different sizes can be met. In addition, evenly set up a plurality of towards a section of thick bamboo on the transportation guide rail, carry along with the transportation guide rail, when carrying to a play feed cylinder top, towards piece downstream and wash out the dried tofu, accomplish the ejection of compact, meanwhile, bagging-off mechanism early overlaps in a play feed cylinder below with the wrapping bag after strutting to accomplish the dried tofu bagging-off, promoted the automation level of dried tofu production greatly, the liberation manpower reduces the manufacturing cost of enterprise.

Drawings

FIG. 1 is a schematic structural diagram of a dried tofu packaging system of the present invention;

FIG. 2 is a schematic structural view of the dual chamber automatic vacuum packaging machine of the present invention;

FIG. 3 is a schematic structural diagram of a dried tofu transportation mechanism of the present invention;

FIG. 4 is a schematic structural diagram of a dried tofu bagging mechanism of the present invention;

FIG. 5 is an enlarged schematic view of a partial structure of a dried tofu conveying mechanism and a bagging mechanism of the present invention when working together;

fig. 6 is a schematic structural diagram of a dried tofu feeding mechanism of the present invention.

In the figure:

1. and (3) vacuum packaging machine:

100. a support table; 101. heat sealing the strips; 102. vacuum cover turning; 103. a first swing arm link; 104. a second swing arm connecting rod; 105. a fuselage side panel; 106. a spring pull rod; 107. a vacuum pump; 108. a first solenoid valve group; 109. a first base plate; 110. a motor; 111. mounting a plate; 112. a support bar; 113. a swing rod; 114. a first cylinder; 115. a first connecting lug plate; 116. installing a base; 117. a second solenoid valve block.

2. A conveying mechanism:

200. punching the barrel; 201. punching a block; 202. a discharging barrel; 203. mounting an ear plate; 204. mounting a column; 205. a connecting plate; 206. a second cylinder; 207. a transport rail; 208. a transport platform; 209. a second base plate; 210. a first drive motor.

3. Bagging mechanism:

300. packaging bags; 301. a bag opening unit; 302. a bag feeding manipulator; 303. a support clip; 304. the disc is rotated.

4. A feeding mechanism:

400. a loading plate; 401. a first slider; 402. a second slider; 403. a slide rail; 404. an unloading platform; 405. a support frame; 406. a control box; 407. a second drive motor.

5. And (5) conveying the belt.

Detailed Description

The invention is further described with reference to specific examples.

Example 1

As shown in fig. 1, the automatic production method of dried tofu of the present embodiment includes the following steps:

the method comprises the following steps: conveying the dried tofu to a specific station for metering through a feeding mechanism 4 after the dried tofu is placed in a basket;

the feeding mechanism 4 comprises a support frame 405 and an object carrying plate 400, the object carrying plate 400 is slidably mounted on the support frame 405, and dried tofu is placed on the object carrying plate 400 after being placed in a basket and lifted to be conveyed to a specific station for metering;

step two: the metered dried tofu is conveyed to a bagging mechanism 3 through a conveying mechanism 2 for bagging;

the metered dried tofu is placed in a punching cylinder 200 of a conveying mechanism 2 and conveyed to a punching station along with a conveying guide rail 207, and the dried tofu in the punching cylinder 200 is punched out to a packaging bag 300 of a bagging mechanism 3 by a punching block 201 to complete bagging;

step three: conveying the bagged dried tofu to a vacuum packaging machine 1 through a conveying belt 5 for vacuum packaging;

placing the unsealed bagged dried tofu on a heat sealing strip 101 on a support table 100 of a vacuum packaging machine 1, covering a vacuum flip 102 to form an evacuation chamber, and starting a vacuum pump 107 to evacuate the evacuation chamber; the gas pumped out by the vacuum pump 107 is conveyed to the first cylinder 114 through a pipeline; simultaneously, heating the heat-seal strip 101 to heat-seal the packaging bag 300; then, the first cylinder 114 is started to drive the vacuum turnover cover 102 to turn up, and the packaged dried tofu is taken down;

Specifically, as shown in fig. 2, the vacuum packaging machine 1 includes a support table 100, a vacuum flip 102, a first cylinder 114 and a vacuum pump 107, the vacuum flip 102 is driven by the first cylinder 114 to be installed above the support table 100 in a turnable manner and to form an evacuation chamber after being covered with the support table 100, an air pipeline of the first cylinder 114 is connected to the vacuum pump 107, and the vacuum pump 107 is used for evacuating the evacuation chamber. Through being connected to vacuum pump 107 with first cylinder 114's gas circuit pipeline, work through utilizing the gas that vacuum pump 107 during operation took out, realized the cyclic utilization to waste gas to need not to set up outside air feeder alone and carry out the air feed to first cylinder 114, be favorable to resources are saved, reduction in production cost.

Feeding mechanism 4 includes support frame 405, carries thing board 400, second driving motor 407 and control box 406, as shown in fig. 6, this support frame 405 is right triangle frame construction, is favorable to improving the stability of support frame 405, and when the dried tofu weight of carrying was heavier, non-deformable can effectively satisfy the production needs. Simultaneously, this support frame 405 includes the stand of two vertical settings and the two stands that the slope set up, and between the stand of two vertical settings, all be equipped with between the stand of vertical setting and the stand that the slope set up and be connected the curb plate, wherein connect still to be connected with the support column between the curb plate for further improve support frame 405 overall structure's stability, and fixed mounting control box 406 on one of them connection curb plate, this control box 406 is used for controlling opening of second driving motor 407 and stops. The loading plate 400 is slidably mounted between the two obliquely arranged upright posts, and an unloading platform 404 is further arranged above the loading plate and close to the upright posts. Place behind the dried tofu basket at carrying thing board 400, then promote under motor drive to unload thing platform 404, weigh the dried tofu after taking off the dried tofu, weigh according to the specific weight of settlement on the electronic scale, weigh after according with the specification, put into transport mechanism 2 in proper order and carry, carry out optimal design through the concrete structure to feeding mechanism 4, can realize automatic pay-off, avoided adopting artifical direct transport, labour saving and time saving.

As shown in fig. 3, the transportation mechanism 2 includes a transportation main body, a punching barrel 200, a punching block 201, a discharging barrel 202, a first driving motor 210 and a second cylinder 206, the transportation main body includes a transportation platform 208, a transportation guide rail 207 and a second bottom plate 209, a fixed side plate is arranged around the second bottom plate 209, the transportation platform 208 is arranged on the top of the fixed side plate, the transportation guide rail 207 is arranged around the transportation platform 208, the transportation guide rail 207 is connected end to end, and the first driving motor 210 provides driving force to perform clockwise or counterclockwise motion. Meanwhile, a plurality of punching cylinders 200 are uniformly arranged on the conveying guide rail 207 and are conveyed along with the conveying guide rail 207, the sizes of the punching cylinders 200 are specifically determined according to the specifications of dried tofu, so that the dried tofu packaging requirements of different sizes can be met, movable blocking pieces are arranged at the bottoms of the punching cylinders, the movable blocking pieces are connected with the bottoms of the punching cylinders 200 through pin shafts, and the movable blocking pieces can turn over when being impacted. An installation lug plate 203 is fixed at a stamping station of the transportation platform 208, a connecting plate 205 is installed on the installation lug plate 203 through an installation column 204, a second cylinder 206 is installed on the connecting plate 205, a piston rod of the second cylinder 206 is fixedly connected with a stamping block 201, and the size of the stamping block 201 is matched with that of the stamping cylinder 200. A discharge cylinder 202 is arranged right below the punching cylinder 200 at the punching station. As shown in fig. 5, during normal operation, the measured dried tofu is sequentially placed into the punching cylinder 200, and is conveyed to the punching station along with the conveying guide rail 207, the piston rod of the second cylinder 206 extends out, the punching block 201 falls down to punch out the dried tofu in the punching cylinder 200, and the dried tofu enters the bagging mechanism 3 from the discharging cylinder 202 for bagging operation.

As shown in fig. 4, the bagging mechanism 3 includes a rotating disc 304, a bag feeding station, a bag opening station and a bagging station, wherein a plurality of pairs of supporting clamps 303 are arranged on the rotating disc 304 at equal intervals along the circumferential direction, the supporting clamps 303 are used for clamping and taking the packaging bag 300 at two sides, the bag feeding station is provided with a bag feeding manipulator 302 for grabbing the packaging bag 300 and conveying the packaging bag to the supporting clamps 303 for fixing, the bag opening station is provided with a bag opening unit 301, the bag opening unit 301 is composed of two L-shaped small rods and can be opened or closed mutually, when the bag is opened, after the two small rods are closed, the short edges of the two small rods are inserted into the opening of the packaging bag 300, then the two small rods are opened to form a certain angle to open the packaging bag 300, specifically, when the bag feeding manipulator 302 grabs the packaging bag 300 and conveys the packaging bag to the supporting clamps 303, the clamping is rotated to the bag opening station by the rotating disc 304, then the bag opening unit 301 opens the opening of the bag 300, and finally the rotating disc 304 conveys the dried bean packaging bag to the conveying belt 5.

The conveying belt 5 conveys the unsealed bagged dried tofu to the vacuum packaging machine 1 to carry out vacuum packaging on the dried tofu, so that the oxidation resistance of the dried tofu is improved, the deterioration of the dried tofu is slowed down, and the purpose of long-term storage is achieved. As shown in fig. 2, the vacuum packaging machine 1, preferably a dual-chamber vacuum packaging machine, includes two symmetrically disposed supporting tables 100, a vacuum flip 102, a vacuum pump 107 and a swing arm link, the main body of the vacuum packaging machine 1 is formed by splicing a first bottom plate 109 and a machine body side plate 105, and the vacuum pump 107, a motor 110, a spring pull rod 106 and a support rod 112 are loaded in the main body. The ends of the vacuum pump 107, the motor 110 and the support rod 112 are all fixedly mounted on the first base plate 109, and the vacuum pump 107 is further connected with the first electromagnetic valve set 108 through a pipeline.

The supporting tables 100 are arranged at the tops, heat sealing strips 101 distributed at intervals are arranged on each supporting table 100, and two sides of the vacuum flip 102 are connected with each supporting table 100 through swing arm connecting rods respectively and can be installed above any supporting table 100 in a turnover mode. The swing arm connecting rods comprise first swing arm connecting rods 103 and second swing arm connecting rods 104, according to the position of fig. 2, two first swing arm connecting rods 103 are rotatably mounted on two sides of one supporting table 100 (located on the right side) in a symmetrical mode, two second swing arm connecting rods 104 are rotatably mounted on two sides of the supporting table 100 (located on the left side) in a symmetrical mode, the end portions of the two first swing arm connecting rods 103 are respectively fixed at two ends of a mounting shaft, the end portions of the two second swing arm connecting rods 104 are also respectively mounted at two ends of another mounting shaft, and the mounting shaft is rotatably mounted on the main body of the vacuum packaging. The other ends of the first swing arm connecting rod 103 and the second swing arm connecting rod 104 are rotatably connected with the vacuum flip 102. When the vacuum lid 102 is pulled up, the first swing arm link 103 and the second swing arm link 104 rotate with respect to the mounting shaft, and the vacuum lid 102 can be moved back and forth left and right. Meanwhile, the spring pull rods 106 are symmetrically fixed on the first base plate 109, one end of the spring pull rod 106 is fixedly connected with the first base plate 109, and the other end of the spring pull rod 106 is connected with the mounting shaft between the two swing arm connecting rods, so that the mounting shaft is supported and buffered, and the vacuum flip 102 is more stable when being turned back and forth. The vacuum flip 102 falls down to cover the support table 100 to form a sealed space, then the vacuum pump 107 is started to vacuumize the support table 100, the gas in the bagged dried tofu is pumped out, and the heat-seal strip 101 is heated to seal the opening after the air is pumped out.

Example 2

The automatic production method of dried tofu of the present embodiment is basically the same as embodiment 1, and the main differences are as follows: two upright columns which are obliquely arranged on a support frame 405 in the feeding mechanism 4 are internally provided with a slide rail 403 and a chain wheel; the carrying plate 400 is provided with a first sliding block 401 and a second sliding block 402 which are matched with the sliding rail 403, and a second driving motor 407 drives the chain wheel to rotate, so that the carrying plate 400 is driven to lift along the upright post of the supporting frame 405, and dried tofu is conveyed to a specific station. Specifically, as shown in fig. 6, the carrying plate 400 includes a flat plate horizontally disposed and a baffle plate obliquely disposed at a certain angle with the flat plate, and the dried tofu placed on the flat plate after being placed in the basket is set by the baffle plate to prevent the basket for placing the dried tofu from slipping off during transportation and causing injury to people. The outer side of the bottom of the flat plate and the outer side of the baffle are respectively provided with a first sliding block 401 and a second sliding block 402, the first sliding block 401 and the second sliding block 402 are in sliding fit with the sliding rail 403, two ends of the first sliding block 401 and two ends of the second sliding block 402 are connected with chain wheels, and the chain wheels are connected with a second driving motor 407. When carrying out the pay-off, second driving motor 407 drive sprocket rotates and drives and carry thing board 400 and go up and down to carry the dried tofu, carry out the optimal design through the concrete structure to feeding mechanism 4, can realize the automatic pay-off of dried tofu production, avoided adopting artifical direct transport, labour saving and time saving.

As shown in fig. 2, the first cylinder 114 is mounted on the first bottom plate 109 of the vacuum packaging machine 1 through a mounting base 116, a first connecting lug plate 115 is disposed at the bottom of the first cylinder 114, the first connecting lug plate 115 is hinged to the mounting base 116, and when the vacuum packaging machine works, the first cylinder 114 can swing back and forth at a certain inclination angle relative to the mounting base 116 after being stressed. The second electromagnetic valve group 117 is arranged on the air path pipeline of the first cylinder 114, the first cylinder 114 is controlled to operate by opening and closing the second electromagnetic valve group 117, and the control process is simple and convenient and easy to implement.

Specifically, a piston rod at the top of the first cylinder 114 is fixedly connected with a swing rod 113, and the swing rod 113 is connected with the mounting plate 111 and can swing left and right relative to the mounting plate 111; the mounting plate 111 is respectively connected with the mounting shafts for mounting the first swing arm connecting rod 103 and the second swing arm connecting rod 104, i.e. the mounting shafts between the two first swing arm connecting rods 103 and the mounting shafts between the two second swing arm connecting rods 104 are both rotationally connected with the mounting plate 111. The gas pumped out by the vacuum pump 107 is conveyed into the first cylinder 114 for secondary utilization, so that the piston rod of the first cylinder 114 is stretched, the first swing arm connecting rod 103 and the second swing arm connecting rod 104 are driven to swing together, and the vacuum flip 102 is automatically turned back and forth.

In operation, and taking the orientation of FIG. 2 as an example, the first cylinder 114 is tilted to the right, the piston rod is extended, and the vacuum flip 102 is placed over the right support 100. After the dried tofu in the right supporting table 100 is sealed, the vacuum flip 102 is turned to the left supporting table 100 to drive the piston rod of the first cylinder 114 to contract, the first cylinder 114 is forced to tilt left, the swing rod 113 starts to swing right, the mounting shaft (i.e., the mounting shaft between the two first swing arm connecting rods 103 and the mounting shaft between the two second swing arm connecting rods 104) is rotated through the mounting plate 111 to drive the two first swing arm connecting rods 103 and the two second swing arm connecting rods 104 to swing left together, and the vacuum flip 102 completes the turnover.

In addition, the first cylinder 114 and the vacuum pump 107 are controlled by a P L C controller (the existing P L C controller is adopted for control, the control principle can refer to the utility model with Chinese patent application number of 201720784243.8) to control start and stop, a control panel is further arranged on the vacuum packaging machine 1, relevant parameters can be input in the control panel, so that the working process of the vacuum packaging machine 1 is automatically controlled, the control process is simple, the operation is easy, the operation difficulty is greatly reduced, and the operation can be performed by common workers.

When the automatic vacuum packaging production is carried out on the dried tofu, the supporting tables 100 on the two sides alternately work, when the supporting table 100 on one side is in a working state, the bagged dried tofu to be sealed is placed in the supporting table 100 in a non-working state, and after the sealing of the bagged dried tofu on one side is finished, the vacuum flip cover 102 is automatically turned up under the driving of the first cylinder 114 to press the bagged dried tofu to be sealed for vacuum packaging; and taking off the sealed bagged dried tofu and transporting the bagged dried tofu to a boxing station, and then placing the bagged dried tofu to be sealed again for the next vacuum packaging.

Claims

1. An automatic production method of dried tofu is characterized by comprising the following operation steps:

the method comprises the following steps: conveying the dried tofu to a specific station for metering through a feeding mechanism (4) after the dried tofu is placed in a basket;

the feeding mechanism (4) comprises a supporting frame (405) and an object carrying plate (400), the object carrying plate (400) is slidably mounted on the supporting frame (405), and dried tofu is placed on the object carrying plate (400) after being placed in a basket and lifted to be conveyed to a specific station for metering;

step two: the metered dried tofu is conveyed to a bagging mechanism (3) through a conveying mechanism (2) for bagging;

the metered dried tofu is placed in a punching cylinder (200) of a conveying mechanism (2) and conveyed to a punching station along with a conveying guide rail (207), and the dried tofu in the punching cylinder (200) is punched out to a packaging bag (300) of a bagging mechanism (3) by a punching block (201) to be bagged;

step three: conveying the bagged dried tofu to a vacuum packaging machine (1) through a conveying belt (5) for vacuum packaging;

placing unsealed bagged dried tofu on a heat sealing strip (101) on a supporting table (100) of a vacuum packaging machine (1), covering a vacuum flip cover (102) to form an evacuation chamber, and starting a vacuum pump (107) to evacuate the evacuation chamber; the gas pumped by the vacuum pump (107) is conveyed to the first cylinder (114) through a pipeline; simultaneously heating the heat sealing strip (101) to carry out heat sealing on the packaging bag (300); then, starting a first cylinder (114) to drive the vacuum turnover cover (102) to turn up, and taking down the packaged dried tofu;

2. The automatic production method of dried tofu according to claim 1, characterized in that: the support frame (405) is provided with a slide rail (403) and a chain wheel; a first sliding block (401) and a second sliding block (402) which are matched with the sliding rail (403) are arranged on the carrying plate (400), and the first sliding block (401) and the second sliding block (402) are connected with the chain wheel; a second driving motor (407) is adopted to drive the chain wheel to rotate, and the first sliding block (401) and the second sliding block (402) are driven to slide on the sliding rail (403), so that the carrying plate (400) is lifted along the upright post of the supporting frame (405), and dried tofu is conveyed to a specific station.

3. The automatic production method of dried tofu according to claim 2, characterized in that: when the dried tofu is measured, an electronic scale is arranged for weighing.

4. The automatic production method of dried tofu according to claim 3, characterized in that: the punching cylinders (200) comprise a plurality of punching blocks, the punching blocks (201) are uniformly arranged on the conveying guide rails (207), the punching blocks (201) are arranged above the punching station, the discharging cylinders (202) are correspondingly arranged below the punching stations, and piston rods of the cylinders are fixedly connected with the punching blocks (201); determining the size of the washing cylinder (200) according to the specification of the dried tofu; the dried tofu is conveyed to a stamping station, the cylinder controls the stamping block (201) to fall down to stamp out the dried tofu, and the dried tofu is discharged into a packaging bag (300) prepared in advance by the bag filling mechanism (3) through the discharging barrel (202).

5. The automatic production method of dried tofu according to claim 4, characterized in that: a plurality of pairs of supporting clamps (303) are arranged on a rotating disc (304) on the bagging mechanism (3) at equal intervals along the circumferential direction of the rotating disc, a packaging bag (300) is grabbed by a bag feeding mechanical arm (302) and is conveyed to the supporting clamps (303) for fixing, the rotating disc (304) rotates to a bag opening unit (301) to open the bag opening of the packaging bag (300), the rotating disc (304) continues to rotate to a bagging station, and the packaging bag (300) is placed below a discharging barrel (202); after the dried tofu is bagged, the disc (304) is rotated to transfer the dried tofu to the conveyer belt (5).

6. The automatic production method of dried tofu according to any one of claims 1 to 5, wherein: the conveying belt (5) conveys the unsealed bagged dried tofu to the vacuum packaging machine (1), and the vacuum packaging machine (1) adopts a double-chamber vacuum packaging machine.

7. The automatic production method of dried tofu according to any one of claims 1 to 5, wherein: the supporting table (100) is connected with the vacuum flip cover (102) through a swing arm connecting rod, and the swing arm connecting rod is driven by a first cylinder (114) to swing back and forth to realize the turnover of the vacuum flip cover (102).

8. The automatic production method of dried tofu according to claim 7, characterized in that: the first cylinder (114) is hinged to a first bottom plate (109) of the vacuum packaging machine (1), an air path pipeline of the first cylinder (114) is connected with a vacuum pump (107), and a piston rod of the first cylinder is connected with a mounting shaft of a swing arm connecting rod through a mounting plate (111) after being connected with a swing rod (113).

9. The automatic dried tofu production method according to claim 8, wherein the first cylinder (114) and the vacuum pump (107) are both controlled to start and stop by a P L C controller.

10. The automatic production method of dried tofu according to claim 7, characterized in that: when vacuum packaging is carried out, the supporting platforms (100) on the two sides work alternately, when the supporting platform (100) on one side is in a working state, bagged dried tofu to be sealed is placed in the supporting platform (100) in a non-working state, and after the sealing of the bagged dried tofu on one side is finished, the vacuum flip cover (102) is automatically turned up to be pressed to the position where the bagged dried tofu to be sealed is packaged in a vacuum mode under the driving of the first cylinder (114); and taking off the sealed bagged dried tofu and transporting the bagged dried tofu to a boxing station, and then placing the bagged dried tofu to be sealed again for the next vacuum packaging.