A driving and controlling method for a preparation and forming machine for fruit packaging boxes

Abstract

The invention discloses a preparation and forming machine and a driving and controlling method for a fruit packaging box, and the invention relates to the technical field of fruit box production and forming. In the invention, the machine comprises a bottom plate, a placement frame and a mounting plate, a telescopic mechanism is installed on the top of the mounting plate, a shaping pressing block is fixedly connected to the output end of the telescopic mechanism, and an air outlet pipe cooperates with a baffle plate, when the material is being shaped, the baffle plate is put into the placement frame for shielding, so as to prevent the unshaped material from blocking the air outlet pipe, and when the material is shaped and needs to be cooled, the baffle plate is pulled out, and the air outlet pipe blows air to the packaging box, and by designing a linearized and diversified fan output power control mode, it is ensured that the fan air outlet size is in a "positive" positive correlation with the box body molding cooling effect, the air outlet cooling efficiency is maximized, the box body cooling molding effect is protected, the time required for material shaping is reduced, and the work efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fruit box manufacturing and forming, in particular to a driving and controlling method of a preparation and forming machine for fruit packaging boxes. Background Art

[0002] The working principle of the molding machine is similar to that of a syringe used for injections. It uses the thrust of the screw (or plunger) to inject the plasticized molten state (i.e. viscous flow state) plastic into a closed mold cavity, and obtains the product after solidification and shaping. Injection molding is a cyclic process, and each cycle mainly includes: quantitative feeding - melt plasticization - pressure injection - mold filling and cooling - mold opening and part removal. After the plastic part is taken out, the mold is closed again for the next cycle.

[0003] In the actual production process, the material is generally heated and placed in a molding tank, and then the pressing plate is moved downward to press the material for molding. After molding is completed, the pressing plate is moved upward to wait for the molded material to cool down, and the top plate at the bottom of the molding tank is used to eject the cooled and molded material from the bottom of the molding tank to facilitate the next molding tank operation.

[0004] The existing processing method requires waiting for the material to cool and shape in the shaping tank before it can be taken out. If it is taken out prematurely, the material may not be completely cooled, which will cause the shape of the material to deform. However, this method takes a long time to wait, which undoubtedly increases the time consumption of the process and reduces the production efficiency of the process.

[0005] Faced with the above situation, how to effectively resolve the contradiction between the degree of material finalization and the time-consuming process has become a problem that needs to be solved. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a driving and controlling method for a preparation and molding machine for fruit packaging boxes, which realizes that after the pressing plate presses the material to shape it, the fan can adjust the wind power to blow air to the material, that is, the wind speed will not be too high, and the material will not be deformed when it is not fully formed. At the same time, it also reduces the time waiting for the material to cool down, thereby improving the process efficiency.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a driving and controlling method for a preparation and forming machine for fruit packaging boxes, comprising a bottom plate, a placement frame and a mounting plate, a telescopic mechanism is installed on the top of the mounting plate, and a shaping block is fixedly connected to the output end of the telescopic mechanism. A baffle is movably arranged inside the placement frame, and a group of lifting mechanisms for driving the baffle to vertically lift are arranged on the bottom plate, and the lifting mechanisms are located outside the placement frame.

[0008] A fan is fixedly arranged at the bottom of the bottom plate, and the output end of the fan is fixedly connected to two delivery pipes, both ends of the delivery pipes are connected to connecting pipes, and the adjacent connecting pipes are connected to output pipes, and one side of the output pipe is connected to a plurality of air outlet pipes, and the air outlet pipes are all arranged tilted downward, and the surface of the placement frame is provided with air outlet slots for the air outlet pipes to discharge air. A plurality of temperature sensor modules for detecting the air flow temperature are embedded on the inner surface of the side plate of the placement frame.

[0009] As a preferred technical solution of the present invention, the output end of the lifting mechanism is fixedly connected with a connecting rod, and one end of the connecting rod is fixedly connected to the baffle.

[0010] As a preferred technical solution of the present invention, two output pipes are connected between adjacent connecting pipes.

[0011] As a preferred technical solution of the present invention, the outer side of the baffle is in contact with the inner wall of the placement frame.

[0012] As a preferred technical solution of the present invention, the inner opening height of the air outlet slot of the placement frame is higher than the outer opening height.

[0013] As a preferred technical solution of the present invention, the temperature sensor module is installed at the upper edge of the annular side plate of the placement frame.

[0014] The present invention provides a driving and controlling method for a preparation and forming machine for a fruit packaging box, comprising the following steps:

[0015] S1. Pour the material to be shaped into the placement frame, start the telescopic mechanism, move the shaping block downward, contact the shaping block with the material, extrude the material, and after the pressing is completed, the telescopic mechanism drives the shaping block to move upward.

[0016] S2. After the shaping block is finished and moves upward, the lifting mechanism drives the baffle to move upward, and the baffle is pulled out of the placement frame. The fan is started, and the fan conveys the air to the conveying pipe, and then conveys the air to the output pipe through the conveying pipe and the connecting pipe, and finally blows it out through the outlet pipe.

[0017] S3. The temperature sensing module starts working. Assume that the parameter values ​​detected by the four photoelectric sensors at any time are {W1, W2, W3, W4} in sequence:

[0018] S3.1. The system presets the reference temperature Ws for the cooling and forming of the packaging box, and analyzes the temperature detected by the temperature sensor modules at each position and W s The temperature difference between △W1=W1-W s , △W2=W2-W s , △W3=W3-W s , △W4=W4-W s .

[0019] S3.2. Compare the maximum extreme value among △W1, △W2, △W3, and △W4, and record it as △W max .

[0020] S3.3. Analyze the mean temperature W of △W1, △W2, △W3, and △W4 p =(△W1+△W2+△W3+△W4) / 4.

[0021] S4. The real-time power function reference value F (P z )=P min +P 极值 +P 均值 , where P min The minimum power output of the fan is preset for the control system, where F (P 极值 )∝[1 / F(△W max )], F (P 均值 )∝[1 / F(W p )], P 极值 The temperature difference extreme value compensation power is actually the power part of the fan output that is linearly adjusted according to the maximum temperature difference among △W1, △W2, △W3, and △W4. 均值 It is the mean temperature difference compensation power. In fact, the mean temperature difference compensation power is the power part of the fan output that is linearly adjusted according to the mean temperature difference of △W1, △W2, △W3, and △W4.

[0022] F(P 极值 ) is the function reference value of the temperature difference extreme value compensation power, F (△W max ) is the function reference value of the temperature difference extreme value, F(P 均值 ) is the function reference value of the temperature difference mean compensation power, F (W p ) is the function reference value of the mean temperature.

[0023] Among them, by analyzing the maximum extreme value △W max And the temperature difference extreme value compensation power P 极值 , the box area with the lowest degree of shaping is blown with an appropriate degree of cold air rate to prevent excessive airflow rate from causing damage to the area with a lower degree of shaping. However, in order to match other areas, the average value W is used. p Method, judge the overall cooling degree of the box body, and adjust the temperature difference mean compensation power P 均值 To promote the overall cooling and shaping efficiency of the box.

[0024] S5. When the air flow temperature detected by all temperature sensing modules is no greater than the packaging box cooling molding reference temperature W s When the fan stops blowing, the cooled and formed box material is taken out through the automatic mechanism.

[0025] S6. Repeat the contents of S1 to S5.

[0026] The present invention provides a driving and controlling method for a preparation and forming machine for a fruit packaging box, which has the following beneficial effects:

[0027] The present invention cooperates with the air outlet duct and the baffle. When the material is being shaped, the baffle is placed in the placement frame for shielding to prevent unshaped materials from clogging the air outlet duct. When the material is shaped and needs to be cooled, the baffle is pulled out, and the air outlet duct blows air to the packaging box body, and the real-time air flow temperature of the box body is cooled by multi-directional and continuous sensing. By designing a linear and diversified fan output power control mode, it is ensured that the fan air outlet size is in a "positive" positive correlation with the box body molding cooling effect, thereby maximizing the air outlet cooling efficiency, protecting the box body cooling molding effect, and reducing the time required for material shaping, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 It is a schematic diagram of the baffle explosion structure of the present invention.

[0030] Figure 3 It is a schematic diagram of the structure of the delivery pipe of the present invention.

[0031] In the figure: 1. bottom plate; 2. mounting plate; 21. telescopic mechanism; 22. shaping block; 3. placement frame; 4. baffle; 5. fan; 51. output pipe; 52. air outlet pipe; 53. connecting pipe; 54. conveying pipe; 55. air outlet slot; 6. temperature sensor module; 7. lifting mechanism; 71. connecting rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] Embodiment 1: The present invention designs a driving and controlling method for a preparation and forming machine for fruit packaging boxes, which mainly includes the following contents:

[0034] Combination Figure 1 , Figure 2 , Figure 3, a bottom plate 1, a placement frame 3 and a mounting plate 2, a telescopic mechanism 21 is installed on the top of the mounting plate 2, and a shaping pressure block 22 is fixedly connected to the output end of the telescopic mechanism 21, a baffle 4 is movably configured inside the placement frame 3, and the bottom plate 1 is configured with a group of lifting mechanisms 7 for driving the baffle 4 to vertically lift and lower, the lifting mechanism 7 is located on the periphery of the placement frame 3, and two lifting mechanisms 7 are respectively arranged on both sides of the placement frame 3, and a connecting rod 71 is fixedly connected to the output end of the lifting mechanism 7, and one end of the connecting rod 71 is fixedly connected to the baffle 4. When lifting and lowering, the two lifting mechanisms 7 are started at the same time to lift the baffle 4, and the two lifting mechanisms 7 can drive the baffle 4 to lift and lower in the same lifting displacement manner. In addition, in the present invention, the material properties of the baffle 4 need to be designed or selected according to the process temperature, pressure and other conditions of the box body being pressed and formed.

[0035] A baffle 4 is provided inside the placement frame 3 to prevent unformed box body material from flowing into the pipe opening of the air outlet duct 52 and blocking the pipe opening. The outer side of the baffle 4 is in contact with the inner wall of the placement frame 3. When the baffle 4 is pulled upward out of the placement frame 3, a gap is formed between the box body being cooled and formed and the inner wall of the placement frame 3. This gap can speed up the airflow and accelerate the cooling rate of the box body. A fan 5 is fixedly installed at the bottom of the base plate 1, and the output end of the fan 5 is fixedly connected to two conveying pipes 54. Both ends of the conveying pipes 54 are connected to connecting pipes 53, and an output pipe 51 is connected between adjacent connecting pipes 53. One side of the output pipe 51 is connected to a plurality of air outlet pipes 52, and the air outlet pipes 52 are all inclined downward. An air outlet slot 55 for the air outlet pipe 52 is opened on the surface of the placement frame 3. The inner opening height of the air outlet slot 55 of the placement frame 3 is higher than the outer opening height. A plurality of temperature sensing modules 6 are embedded and installed on the inner wall of the placement frame 3. Each side panel of the placement frame 3 is configured with at least one temperature sensing module 6. The temperature sensing module 6 is installed at the upper edge position of the circumferential side panel of the placement frame 3. The temperature sensing module 6 is used to detect the temperature of the gap airflow blown upward between the placement frame 3 and the box body being cooled and formed.

[0036] Embodiment 2: In the present invention, a driving and controlling method for a preparation and forming machine for fruit packaging boxes is designed, and the specific working principle is as follows:

[0037] First, pour the material to be shaped into the shaping groove 3, start the telescopic mechanism 21, and drive the shaping plate 22 to move downward to contact the material in the shaping groove 3 to press and shape the material. After shaping is completed, the telescopic mechanism 21 drives the shaping plate 22 to move upward.

[0038] Then, a set of lifting mechanisms 7 drives the baffle 4 to move upward, and pulls the baffle 4 out of the placement frame 3. The fan 5 is started, and the fan 5 conveys the wind to the two conveying pipes 54, and then through the cooperation of the connecting pipe 53 and the output pipe 51, the wind is conveyed to the outlet pipe 52, and the wind is conveyed to the placement frame 3 through the outlet slot 55.

[0039] When fan 5 starts working, it uses the minimum power P min The placement frame 3 is blown with air. At this time, the material has just been shaped and the temperature on the outside is relatively high. This avoids deformation of the material surface due to excessive wind speed. When the temperature sensing module 6 detects that the temperature inside the placement frame 3 drops, the control system changes the output power of the fan 5.

[0040] When the air flow temperature detected by all temperature sensing modules 6 is not greater than the packaging box cooling molding reference temperature W s When the fan 5 stops blowing, the package box that has been cooled and formed is taken out.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A control method for a fruit packaging box preparation and molding machine, wherein the control method is implemented on a preparation and molding machine that comprises a bottom plate (1), a placement frame (3) and a mounting plate (2), wherein a telescopic mechanism (21) is mounted on the top of the mounting plate (2), and a shaping block (22) is fixedly connected to the output end of the telescopic mechanism (21), and the machine is characterized in that: The placement frame (3) is movably provided with a baffle (4) inside, and the bottom plate (1) is provided with a group of lifting mechanisms (7) for driving the baffle (4) to vertically lift, and the lifting mechanisms (7) are located outside the placement frame (3); A fan (5) is fixedly arranged at the bottom of the base plate (1); the output end of the fan (5) is fixedly connected to two delivery pipes (54); both ends of the delivery pipes (54) are connected to connecting pipes (53); an output pipe (51) is connected between adjacent connecting pipes (53); one side of the output pipe (51) is connected to a plurality of air outlet pipes (52); the air outlet pipes (52) are all arranged to be tilted downward; and an air outlet slot (55) for the air outlet pipes (52) to discharge air is provided on the surface of the placement frame (3); The inner surface of the side plate of the placement frame (3) is embedded with a plurality of temperature sensing modules (6) for detecting the temperature of the airflow; The steps of the drive control method for preparing the molding machine are as follows: S1. The material to be shaped is poured into the placement frame (3), the telescopic mechanism (21) is started, the shaping block (22) moves downward, the shaping block (22) contacts the material, and the material is extruded and formed. After the pressing is completed, the telescopic mechanism (21) drives the shaping block (22) to move upward; S2. After the shaping block (22) is shaped and moves upward, the lifting mechanism (7) drives the baffle (4) to move upward, and the baffle (4) is pulled out of the placement frame (3). The fan (5) is started, and the fan (5) conveys the air to the conveying pipe (54), and then conveys the air to the output pipe (51) through the conveying pipe (54) and the connecting pipe (53), and finally blows the air out through the air outlet pipe (52); S3. The temperature sensing module (6) starts to work. It is assumed that the parameter values ​​detected by the four temperature sensing modules (6) at any time are {W1, W2, W3, W4} in sequence: S3.

1. System presets the reference temperature W for the cooling and molding of the packaging box s , analyze the temperature detected by the temperature sensor module (6) at each location and W s The temperature difference between △W1=W1-W s , △W2=W2-W s , △W3=W3-W s , △W4=W4-W s ; S3.

2. Compare the maximum extreme value among △W1, △W2, △W3, and △W4, and record it as △W max ; S3.

3. Analyze the mean temperature W of △W1, △W2, △W3, and △W4 p =(△W1+△W2+△W3+△W4) / 4; S4. The real-time power function reference value F (P z )=P min +P 极值 +P 均值 ; Among them, P min Presetting the minimum power output of the fan (5) for the control system; Among them, F (P 极值 )∝[1 / F(△W max )], F(P 均值 )∝[1 / F(W p )], P 极值 is the temperature difference extreme value compensation power, P 均值 is the temperature difference mean compensation power; Among them, F (P 极值 ) is the function reference value of the temperature difference extreme value compensation power, F (△W max ) is the function reference value of the temperature difference extreme value, F(P 均值 ) is the function reference value of the temperature difference mean compensation power, F (W p ) is the function reference value of the mean temperature; S5. When the air flow temperature detected by all temperature sensing modules (6) is no greater than the packaging box cooling molding reference temperature W s When the fan (5) stops blowing, the cooled and formed box body material is taken out through the automated mechanism; S6. Repeat the contents of S1 to S5.

2. A method for controlling a machine for preparing and forming fruit packaging boxes according to claim 1, characterized in that: The output end of the lifting mechanism (7) is fixedly connected to a connecting rod (71), and one end of the connecting rod (71) is fixedly connected to the baffle (4).

3. The driving and controlling method of a machine for preparing and forming fruit packaging boxes according to claim 1, characterized in that: Adjacent connecting pipes (53) are connected to two output pipes (51).

4. The driving and controlling method of a machine for preparing and forming fruit packaging boxes according to claim 1, characterized in that: The outer side of the baffle (4) is in contact with the inner wall of the placement frame (3).

5. The driving and controlling method of a machine for preparing and forming fruit packaging boxes according to claim 1, characterized in that: The inner opening height of the air outlet slot (55) of the placement frame (3) is higher than the outer opening height.

6. A method for controlling a machine for preparing and forming fruit packaging boxes according to claim 1, characterized in that: The temperature sensing module (6) is installed at the upper edge of the circumferential side plate of the placement frame (3).

Images