Leather embossing machine capable of automatically adjusting height of lower roller

Abstract

The utility model provides a leather embossing machine capable of automatically adjusting the height of a lower roller, and relates to the field of mechanical devices. The device structurally comprises a base, an upper roller, a mold roller, a lower roller and a lower roller automatic adjusting mechanism, the lower roller automatic adjusting mechanism comprises a left side height adjusting mechanism and a right side height adjusting mechanism, the left side height adjusting mechanism is arranged on the left side of the lower roller, and the right side height adjusting mechanism is arranged on the right side of the lower roller; the height of the lower roller of the leather embossing machine can be automatically adjusted through the lower roller automatic adjusting mechanism, the automation degree is high, datamation display is achieved, and the problems that according to an existing lower roller height adjusting mechanism of the leather embossing machine, the leather embossing depth cannot be unified and standardized due to the fact that a lifting button of a hydraulic cylinder is manually pressed for control, and the work efficiency is high are effectively solved. The height of the lower roller cannot be digitally displayed, and meanwhile, the extension length of the hydraulic rod and the height of the lower roller cannot be automatically controlled and adjusted in real time.

Description

Technical Field

[0001] The utility model relates to the field of mechanical devices, in particular to a leather embossing machine capable of automatically adjusting the height of a lower roller. Background Art

[0002] The leather embossing machine comprises an upper roller, a die roller and a lower roller, wherein the upper roller is located above the die roller and the lower roller is located below the die roller;

[0003] The upper roller pushes the mold roller downward to prevent the mold roller from bulging upward and deforming and to adjust the downward pressure, while the lower roller pushes the mold roller upward under the action of hydraulic pressure and rotates under the drive of the motor, so that the leather can be pressed with a pattern when passing through the gap between the mold roller and the lower roller; the height of the lower roller determines the pressure of the lower roller pushing upward, and further determines the depth of the pattern during the leather pressing process. Therefore, the height of the lower roller is crucial. The lower roller is usually equipped with hydraulic structures on the left and right sides to adjust the height of the lower roller through the hydraulic structure.

[0004] The lower roller height adjustment structure of the existing leather embossing machine is controlled by manually pressing the lifting button of the hydraulic cylinder. Manually adjusting the hydraulic cylinder to adjust the lower roller height has the following disadvantages:

[0005] 1. The height of the lower roller is entirely dependent on the employee's visual observation, and there is a variable in manually pressing the lifting button of the hydraulic cylinder, resulting in different depths of leather embossing for each machine. It is impossible to unify the depth of leather embossing and it is impossible to display the height of the lower roller in a digital way;

[0006] 2. After a long period of operation, the hydraulic rod supporting the lower roller of the leather embossing machine retracts downward due to gravity and pressure. The existing embossing machine cannot automatically adjust the extension length of the hydraulic rod in real time, resulting in the leather pattern depth of the leather embossing machine being shallow in the later stage, which does not meet the processing requirements. Utility Model Content

[0007] The utility model provides a leather embossing machine capable of automatically adjusting the height of a lower roller, aiming to improve the technical problems that the height adjustment structure of the lower roller of the existing leather embossing machine is controlled by manually pressing the lifting button of the hydraulic cylinder, the depth of the leather embossing cannot be standardized, the height of the lower roller cannot be displayed in a digital manner, and the extension length of the hydraulic rod and the height of the lower roller cannot be automatically controlled and adjusted in real time.

[0008] The utility model discloses a leather embossing machine capable of automatically adjusting the height of a lower roller, comprising: a base, an upper roller, a mold roller, a lower roller and a lower roller automatic adjustment mechanism, wherein the lower roller automatic adjustment mechanism comprises a left height adjustment mechanism and a right height adjustment mechanism, wherein the left height adjustment mechanism is installed on the left side of the lower roller, and the right height adjustment mechanism is installed on the right side of the lower roller;

[0009] The left height adjustment mechanism includes a displacement sensor, a control display panel, a PLC, a relay, a solenoid valve, a hydraulic cylinder, a slider and an oil pump, wherein the output end of the displacement sensor is connected to the input end of the PLC, the output end of the control display panel is connected to the input end of the PLC, the output end of the PLC is connected to the input end of the relay, and the output end of the relay is connected to the input end of the solenoid valve;

[0010] The working steps of the left height adjustment mechanism are:

[0011] S1, inputting a predetermined standard value X of the left side height of the lower roller through the control display panel, and inputting the predetermined standard value X of the left side height into the PLC through an electrical signal;

[0012] S2, the displacement sensor detects the height of the lower roller, obtains the current value Y of the left side height, and inputs the current value Y of the left side height into the PLC through an electrical signal;

[0013] S3, the PLC calculates the left offset value Z according to the formula "left offset value Z = left height predetermined standard value X - left height current value Y", and inputs the left offset value Z into the relay through an electrical signal;

[0014] S4, the relay controls the power on and power off of the solenoid valve according to the positive and negative of the left offset value Z, and the relay controls the power on and power off time of the solenoid valve according to the numerical value of the left offset value Z;

[0015] S5. When the relay is powered on, the hydraulic oil flows, the oil pump in the hydraulic cylinder provides a power source, and the hydraulic rod extends upward. The longer the relay is powered on, the more the hydraulic rod extends upward. When the relay is powered off, the hydraulic oil is disconnected, and the hydraulic rod in the hydraulic cylinder retracts downward. The longer the relay is powered off, the more the hydraulic rod retracts downward. The hydraulic rod of the hydraulic cylinder is fixedly connected to the left side of the lower roller through the slider, thereby adjusting the height of the left side of the lower roller.

[0016] S6. The displacement sensor detects the height of the lower roller again, and inputs the current value of the left height Y into the PLC through an electrical signal. The PLC calculates the left offset value Z again according to the formula "left offset value Z = left height predetermined standard value X - left height current value Y". If the left offset value Z = 0, the height adjustment of the left side of the lower roller is completed. If the left offset value Z ≠ 0, S1 is repeated.

[0017] Furthermore, the right side height adjustment mechanism has the same structure and working principle as the left side height adjustment mechanism, and the right side height of the lower roller can be adjusted by the right side height adjustment mechanism.

[0018] Furthermore, the displacement sensor is any one of a magnetoresistive displacement sensor, a capacitive displacement sensor, an inductive displacement sensor and a resistive linear displacement sensor.

[0019] Specifically, the displacement sensor is a magnetic grating displacement sensor, including a magnetic grating and a magnetic head, wherein the magnetic grating is mounted on the base, and the magnetic head is mounted on the slider.

[0020] In addition, the leather embossing machine of the utility model is also equipped with a temperature regulating mechanism, which includes a temperature sensor, an AC contactor and an electric heating tube, the output end of the temperature sensor is connected to the input end of the PLC, the output end of the PLC is connected to the input end of the relay, the output end of the relay is connected to the input end of the AC contactor, and the output end of the AC contactor is connected to the input end of the electric heating tube;

[0021] The temperature regulating mechanism can realize automatic control of the embossing temperature, and its working steps are as follows:

[0022] S1. Inputting a predetermined temperature standard value A through the control display panel, and inputting the predetermined temperature standard value A into the PLC through an electrical signal;

[0023] S2, the temperature sensor detects the temperature inside the leather embossing machine, obtains the current temperature value B, and inputs the current temperature value B into the PLC through an electrical signal;

[0024] S3, the PLC determines whether the current temperature value B is greater than the predetermined temperature value A. If the current temperature value B is less than the predetermined temperature value A, the relay is powered on by an electrical signal; if the current temperature value B is equal to or greater than the predetermined temperature value A, the relay is powered off by an electrical signal;

[0025] S4. When the relay is powered on, the AC contactor controls the electric heating tube to start heating up. When the relay is powered off, the AC contactor controls the electric heating tube to shut down and use the natural environment to cool down.

[0026] Furthermore, the control display panel is a touch screen, through which the left side height predetermined standard value X and the temperature predetermined standard value A can be input. In addition, the control display panel can display the left side height predetermined standard value X, the left side height current value Y, the temperature predetermined standard value A and the temperature current value B, thereby realizing digital display.

[0027] Furthermore, the PLC is a programmable logic controller, which is a digital operation controller with a microprocessor for automatic control, and can load control instructions into memory at any time for storage and execution.

[0028] Furthermore, a leather unloading rack, a tension roller and a guide roller are installed on the rear side of the base. When the leather embossing machine is working, the raw leather roller to be embossed is placed on the leather unloading rack. After being guided by the tension roller and the guide roller, the leather passes through the gap between the mold roller and the lower roller. At the same time, the motor drives the lower roller to rotate, thereby realizing the embossing of patterns on the leather.

[0029] Beneficial effects:

[0030] The utility model installs displacement sensors on both sides of the lower roller, monitors the height of both sides of the lower roller in real time through the displacement sensors, and transmits the height data to the PLC. The PLC compares the height data with the preset height value, calculates the height data of the hydraulic rod that needs to rise or fall and rise or fall, and then controls the hydraulic rod to make corresponding height adjustments. The hydraulic rod is fixedly connected to the lower roller, so as to realize automatic adjustment of the height of the lower roller. At the same time, the height data and other information are displayed digitally by controlling the display panel, so as to solve the problems that the existing leather embossing machine is controlled by manually pressing the lifting button of the hydraulic cylinder, resulting in the inability to unify the standard of the depth of leather embossing, the inability to display the height of the lower roller digitally, and the inability to automatically control and adjust the extension length of the hydraulic rod and the height of the lower roller in real time. The automatic adjustment mechanism of the lower roller of the utility model has a high degree of automation, eliminates the process of manual adjustment, and can effectively improve the production efficiency of the leather embossing machine; in addition, the utility model also includes a temperature adjustment mechanism, through which the automatic control of the embossing temperature can be realized, thereby ensuring the embossing temperature and quality of the leather. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 This is a front view of the leather embossing machine of the utility model;

[0033] Figure 2 It is a side view of the leather embossing machine of the utility model;

[0034] Figure 3 It is a module schematic diagram of the left side height adjustment mechanism of the utility model;

[0035] Figure 4 It is a module schematic diagram of the temperature regulating mechanism of the utility model.

[0036] In the figure: base-1, upper roller-2, mold roller-3, lower roller-4, lower roller automatic adjustment mechanism-5, left height adjustment mechanism-51, displacement sensor-501, control display panel-502, PLC-503, relay-504, solenoid valve-505, hydraulic cylinder-506, slider-507, oil pump-508, right height adjustment mechanism-52, temperature adjustment mechanism-6, temperature sensor-601, AC contactor-602, electric heating tube-603, leather unloading rack-7, tension roller-8 and guide roller-9. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0038] Example 1, please refer to Figures 1 to 3 The first embodiment of the utility model provides a leather embossing machine capable of automatically adjusting the height of a lower roller, comprising: a base 1, an upper roller 2, a mold roller 3, a lower roller 4 and a lower roller automatic adjustment mechanism 5, wherein the lower roller automatic adjustment mechanism 5 comprises a left height adjustment mechanism 51 and a right height adjustment mechanism 52, wherein the left height adjustment mechanism 51 is installed on the left side of the lower roller 4, and the right height adjustment mechanism 52 is installed on the right side of the lower roller 4;

[0039] The left height adjustment mechanism 51 includes a displacement sensor 501, a control display panel 502, a PLC 503, a relay 504, a solenoid valve 505, a hydraulic cylinder 506, a slider 507 and an oil pump 508. The output end of the displacement sensor 501 is connected to the input end of the PLC 503, the output end of the control display panel 502 is connected to the input end of the PLC 503, the output end of the PLC 503 is connected to the input end of the relay 504, and the output end of the relay 504 is connected to the input end of the solenoid valve 505.

[0040] Specifically, the displacement sensor is a magnetic grating displacement sensor, including a magnetic grating and a magnetic head, wherein the magnetic grating is mounted on the base 1, and the magnetic head is mounted on the slider 507;

[0041] The left side height adjustment mechanism 51 can realize automatic adjustment of the left side height of the lower roller 4. The working steps of the left side height adjustment mechanism 51 are as follows:

[0042] S1. When operating, the employee inputs the predetermined standard value X of the left side height of the lower roller 4 through the control display panel 502, and inputs the predetermined standard value X of the left side height into the PLC 503 through an electrical signal;

[0043] S2, the displacement sensor 501 detects the height of the lower roller 4, obtains the current value Y of the left height, and inputs the current value Y of the left height into the PLC503 through an electrical signal;

[0044] S3, the PLC 503 calculates the left offset value Z according to the formula "left offset value Z = left height predetermined standard value X - left height current value Y", and inputs the left offset value Z into the relay 504 through an electrical signal;

[0045] S4, the relay 504 controls the solenoid valve 505 to be powered on and off according to the positive and negative values ​​of the left offset value Z, and the relay 504 controls the duration of the solenoid valve 505 to be powered on and off according to the numerical value of the left offset value Z;

[0046] S5. When the relay 504 is powered on, the hydraulic oil flows, the oil pump 508 in the hydraulic cylinder 506 provides a power source, and the hydraulic rod extends upward. The longer the relay 504 is powered on, the more the hydraulic rod extends upward. When the relay 504 is powered off, the hydraulic oil is disconnected, and the hydraulic rod in the hydraulic cylinder 506 retracts downward. The longer the relay 504 is powered off, the more the hydraulic rod retracts downward. The hydraulic rod of the hydraulic cylinder 506 is fixedly connected to the left side of the lower roller 4 through the slider 507, thereby adjusting the height of the left side of the lower roller 4.

[0047] S6, the displacement sensor 501 detects the height of the lower roller 4 again, and inputs the current value of the left height Y into the PLC503 through an electrical signal, and the PLC503 calculates the left offset value Z again according to the formula "left offset value Z = left height predetermined standard value X - left height current value Y". If the left offset value Z = 0, the left height adjustment of the lower roller 4 is completed. If the left offset value Z≠0, S1 is repeated.

[0048] Furthermore, the right side height adjustment mechanism 52 has the same structure and working principle as the left side height adjustment mechanism 51 , and the right side height adjustment of the lower roller 4 is achieved through the right side height adjustment mechanism 52 .

[0049] Example 2, reference Figure 4 : is a structural schematic diagram provided by the second embodiment of the utility model. The structure of the second embodiment is substantially the same as that of the first embodiment, except that, in the present embodiment, the leather embossing machine of the utility model is further provided with a temperature regulating mechanism 6, the temperature regulating mechanism 6 comprises a temperature sensor 601, an AC contactor 602 and an electric heating tube 603, the output end of the temperature sensor 601 is connected to the input end of the PLC 503, the output end of the PLC 503 is connected to the input end of the relay 504, the output end of the relay 504 is connected to the input end of the AC contactor 602, the output end of the AC contactor 602 is connected to the input end of the electric heating tube 603;

[0050] The temperature regulating mechanism 6 can realize automatic control of the embossing temperature. The working steps of the temperature regulating mechanism 6 are as follows:

[0051] S1. Input a predetermined temperature standard value A through the control display panel 502, and input the predetermined temperature standard value A into the PLC 503 through an electrical signal;

[0052] S2, the temperature sensor 601 detects the temperature inside the leather embossing machine, obtains the current temperature value B, and inputs the current temperature value B into the PLC503 through an electrical signal;

[0053] S3, the PLC 503 determines whether the current temperature value B is greater than the predetermined temperature value A. If the current temperature value B is less than the predetermined temperature value A, the relay 504 is controlled to be powered on through an electrical signal. If the current temperature value B is equal to or greater than the predetermined temperature value A, the relay 504 is controlled to be powered off through an electrical signal.

[0054] S4. When the relay 504 is powered on, the AC contactor 602 controls the electric heating tube 603 to start heating up. When the relay 504 is powered off, the AC contactor 602 controls the electric heating tube 603 to shut down and utilize the natural environment to cool down.

[0055] The implementation principle and technical effects provided by the embodiment of the utility model are the same as those of Embodiment 1. For the sake of brief description, for matters not mentioned in this embodiment, reference may be made to the corresponding contents in Embodiment 1.

[0056] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A leather embossing machine capable of automatically adjusting the height of a lower roller, comprising: The base (1), the upper roller (2), the mold roller (3) and the lower roller (4) are characterized in that: it also includes a lower roller automatic adjustment mechanism (5), the lower roller automatic adjustment mechanism (5) includes a left height adjustment mechanism (51) and a right height adjustment mechanism (52), the left height adjustment mechanism (51) is installed on the left side of the lower roller (4), and the right height adjustment mechanism (52) is installed on the right side of the lower roller (4); The left height adjustment mechanism (51) comprises a displacement sensor (501), a control display panel (502), a PLC (503), a relay (504), a solenoid valve (505), a hydraulic cylinder (506), a slider (507) and an oil pump (508); the output end of the displacement sensor (501) is connected to the input end of the PLC (503); the output end of the control display panel (502) is connected to the input end of the PLC (503); the output end of the PLC (503) is connected to the input end of the relay (504); and the output end of the relay (504) is connected to the input end of the solenoid valve (505).

2. The leather embossing machine capable of automatically adjusting the height of the lower roller according to claim 1, characterized in that: The right side height adjustment mechanism (52) and the left side height adjustment mechanism (51) have the same structure and working principle.

3. The leather embossing machine capable of automatically adjusting the height of the lower roller according to claim 2, characterized in that: The displacement sensor is any one of a magnetoresistive displacement sensor, a capacitive displacement sensor, an inductive displacement sensor and a resistive linear displacement sensor.

4. The leather embossing machine capable of automatically adjusting the height of the lower roller according to claim 3, characterized in that: The displacement sensor is a magnetic grating displacement sensor, comprising a magnetic grating and a magnetic head, wherein the magnetic grating is mounted on the base (1), and the magnetic head is mounted on the slider (507).

5. A leather embossing machine capable of automatically adjusting the height of the lower roller according to any one of claims 1 to 4, characterized in that: It also includes a temperature regulating mechanism (6), which includes a temperature sensor (601), an AC contactor (602) and an electric heating tube (603), the output end of the temperature sensor (601) is connected to the input end of the PLC (503), the output end of the PLC (503) is connected to the input end of the relay (504), the output end of the relay (504) is connected to the input end of the AC contactor (602), and the output end of the AC contactor (602) is connected to the input end of the electric heating tube (603).

6. The leather embossing machine capable of automatically adjusting the height of the lower roller according to claim 5, characterized in that: The control display panel (502) is a touch screen, and displays a predetermined standard value X of the left height, a current value Y of the left height, a predetermined standard value A of the temperature, and a current value B of the temperature.

7. The leather embossing machine capable of automatically adjusting the height of the lower roller according to claim 6, characterized in that: The rear side of the base (1) is provided with a leather unwinding rack (7), a tension roller (8) and a guide roller (9).

Images