CN211256496U - Hydraulic mode locking device of pulp molding forming equipment and forming equipment thereof - Google Patents

Abstract

The utility model discloses a hydraulic mode locking device of paper pulp molding equipment, which comprises a fast mold locking device and an oil circuit control system, wherein the fast mold locking device is embedded into a workbench and is pushed by hydraulic pressure to obtain clamping force; the mould rapid locking device is a mould clamping device; the lower half part of the die clamper is a T-shaped structural part embedded into a T-shaped groove of the workbench, the upper half part of the die clamper is arranged in a U-shaped groove of the die, the upper half part of the die clamper consists of a fixed block, an oil cylinder and a floating press block, the floating press block is driven by the oil cylinder to move in the U-shaped groove of the die, the lower half part of the die clamper comprises a T-shaped base, and the T-shaped base. The utility model also discloses a paper pulp molding equipment of moulding including above-mentioned fluid pressure type mode locking device, make-up machine and mould, through the quick locking of above-mentioned mode locking device, make-up machine and mould and loosen the quick retooling that has realized paper pulp molding product former, the mould of use can accurate accuse temperature, reduces the energy consumption to improve production efficiency and machine rate of utilization.

Description

Hydraulic mode locking device of pulp molding forming equipment and forming equipment thereof

Technical Field

The utility model relates to a pulp molding technical field, concretely relates to pulp molding equipment's fluid pressure type mode locking device and pulp molding equipment thereof.

Background

Along with the increasing market competition, industrial products are updated more and more quickly, coexisting varieties are more and more, the conditions of multi-variety, medium and small batch and mixed flow just-in-time production in production become mainstream, therefore, the interval time of mold replacement is shorter and shorter, namely, the frequency of mold replacement is higher and higher, the downtime of a corresponding matched machine table is greatly increased, the production efficiency and the machine utilization rate are seriously influenced, and the delivery cycle is prolonged. If the problem of rapid die and line changing cannot be effectively solved in automatic production, the automation degree of other links is high, the utilization rate of equipment is difficult to be fully improved, the production efficiency is difficult to be improved, and the problem has a perfect solution, namely: a fast mold change System (SMED) was used, Single Minute Exchange of die, a 50 s origin in Japan, developed by Shigeo Shingo in Toyota, with Single meaning less than 10 Minutes (Minutes). Originally used in automotive manufacturers to achieve fast switching (Exchange of Dies), it helped the Toyota enterprise product switching time to be reduced from 4 hours to 3 minutes. As the name implies, the purpose is to shorten the job transition time, and the key point is to define the internal job transition and the external job transition, change the internal job transition into the external job transition as much as possible, and then shorten the internal and external job transition time as much as possible.

In the field of pulp moulding, rapid mould changes are also required in order to achieve factory automation. At present, the forming machine mainly has two types of structures, namely a reciprocating type and a turnover type, and as for a turnover type forming machine (the technical application related to the patent is based on a turnover type structure for expansion analysis), the forming machine is developed to a fourth generation machine (a working table surface size 1260 x 960) by a first generation prototype machine (a working table size 960 x 550) through continuous improvement, the machine table is also expanded by the original simple structure, the function is single, the structure is reasonable, the multifunctional direction is transited, but a certain distance exists from full-automatic production, such as: the upper die and the lower die of the die need manual operation, the die needs manual carrying when moving, the auxiliary equipment is limited to manual lifting equipment, and the time and labor consumption during the process become a part of the production and operation cost. The utility model aims at providing a fluid pressure type mode locking device to add institutional advancement on the basis of the former of current paper pulp moulding product, realize the quick retooling of paper pulp moulding product former through the quick locking of mould.

In addition, the main heat source transferring modes of the conventional paper-plastic hot-press forming station comprise two modes: the first is high temperature heat conducting oil which conducts heat to the die through an oil path of the workbench, and the second is 12 or 24 resistance wire heating rods which are distributed on the side of the workbench to heat the die. The traditional heating mode, wherein the temperature comes from the machine table side, is heated by the heat conducting element and then transferred to the pulp molding machine mold, has several significant defects in heat exchange: 1. the loss in the heat conduction process is serious, the energy consumption is large, and the energy waste directly causes the increase of the factory cost; 2. the deviation value is large in the energy exchange process, and the heating is not uniform (the deviation is up to more than 10 ℃ after verification), so that the product is heated to different degrees due to different temperatures, has different shrinkage rates, and has more wrinkles, fractures and deformations and lower yield; 3. the mold has long heating time and even can not reach the process temperature, thus seriously affecting the production efficiency and the machine utilization rate.

In summary, the transition from traditional manufacturing to a lean time-based approach is one of the objectives of this patent, achieving flexible production, low in-process inventory, and shorter mold change times to achieve the end goal of rapid response to customer demand changes.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to exist among the above-mentioned prior art, the utility model provides a pulp molding equipment's fluid pressure type mode locking device and former, based on the former's of current pulp molding product transformation and optimization, the quick retooling of pulp molding product former is realized to quick locking through the mould, and the mould that uses can accurate accuse temperature, and temperature deviation control is within +/-2 degrees centigrade, reduces the energy consumption, and the intensification time control is within 10min to improve production efficiency and machine rate of utilization.

In order to achieve the above purpose, the present invention is realized by the following technical solution:

the hydraulic mode locking device of the pulp molding forming equipment comprises a quick mold locking device and an oil way control system, wherein the quick mold locking device is embedded into a workbench and is pushed by hydraulic pressure to obtain clamping force, and the oil way control system controls the hydraulic pressure, the flow and the direction.

The mould rapid locking device is embedded into the workbench, and an attached oil cylinder in the device is pushed by oil pressure to obtain clamping force.

The quick locking device of the die is a die clamper, the lower half part of the quick locking device is a T-shaped structural part embedded into a T-shaped groove of the workbench, the upper half part of the quick locking device is arranged in a U-shaped groove of the die, and the quick locking device is pushed by hydraulic pressure to obtain clamping force.

The upper half part consists of a fixed block, an oil cylinder and a floating press block, and the floating press block is driven by the oil cylinder to move up and down in a U-shaped groove of the die, so that the die is loosened and locked.

The lower half portion comprises a T-shaped base, and the T-shaped base is connected with the oil cylinder.

And an oil injection port is arranged on one side of the floating pressing block.

The T-shaped groove of the workbench corresponds to the U-shaped groove of the die to form a die clamping groove position. The die clamping groove positions are multiple.

The quick locking device is a T-shaped structural part embedded into a T-shaped groove of the workbench, an attached oil cylinder in the device is pushed by oil pressure to obtain clamping force, the device is matched with the size (600 x 960) of the existing die and is matched with the fixing action of the upper die, the lower die and the forming machine, four die clamping groove positions are designed for each die plate, and a single locking device can obtain the clamping force of 1000 kgf.

The oil circuit control system is composed of a hydraulic electromagnetic valve, a hydraulic sensor, a control module, a forming machine control screen and the like. The system controls hydraulic pressure, flow and direction through an electromagnetic valve element; and then the hydraulic pressure is converted into a standard signal by a hydraulic sensor and is transmitted to a control screen of the forming machine (the oil way control system can be integrated with a hydraulic guide rail mold lifting device of forming equipment of a pulp molding product into a same device by integration).

The specific operation steps are as follows:

a. and (3) locking the mould: after the control module sends an oil delivery instruction, the oil pump is started, the hydraulic electromagnetic valve executes pressure and flow control, hydraulic oil is injected into the oil cylinder of the die clamper through the oil pipe, and the floating pressing block presses downwards to lock the die;

b. and (3) loosening operation of the mold: when the control module sends an instruction to unload the oil pressure, the oil pump is started, the hydraulic electromagnetic valve executes pressure and flow control, hydraulic oil flows out of the oil cylinder of the die clamper, the floating pressing block of the device rises, and the loosening operation is completed.

The molding equipment is operated through the control module, and the oil pump is instructed to convey oil pressure to the locking device to complete the movement of the mechanism; the control module simultaneously feeds back information to be displayed through an operation screen (connected to the molding machine).

The optimal reasonable working temperature of the hydraulic system is within 65 ℃, if the temperature is exceeded for a long time, the device fails or the service life is seriously shortened, and the die equipment is damaged, so that a heat insulation sheet needs to be added on a clamping surface of the floating pressing block and the die, and a heat insulation sleeve needs to be externally coated on an oil pipe part, so that the temperature can be controlled below 80 ℃.

And the control module monitors the oil pressure value through a feedback signal, and when the oil pressure value is lower than a set value (namely the locking force does not reach the set value), the motion function of the forming machine is locked.

When the hydraulic guide rail device is matched with a hydraulic guide rail device for use, when the hydraulic guide rail floats upwards for working, the hydraulic device with the mold clamping device locking function automatically fails; on the contrary, when the die clamper is in a locking working state, the hydraulic device with the floating function of the hydraulic guide rail automatically fails. And an oil way 1 and an oil way 3 in the control module are used for a locking device, and an oil way 2 is used for a hydraulic guide rail.

The manual auxiliary operation is cooperated, and meanwhile, the hydraulic mold locking device is matched, so that the time for loading and unloading the mold once by the forming mold of the device can be controlled within 15 minutes.

After the mold locking action is completely finished, the mold is fixed on the machine table, the temperature control box is started, and the mold heating ring in the mold is controlled to start heating until the set temperature is reached.

The mold comprises a mold heating ring and a temperature control device, wherein the mold heating ring is arranged in a groove around the mold cavity and/or the mold core.

The temperature control device is connected with the mold heating ring, is arranged on one side of the machine table and has the functions of temperature setting and monitoring. The forming machine controls the heating temperature of the workbench through the temperature control element, and the mold heating ring is integrated on the inner side of the forming machine through line group connection.

The basic structure of the heating ring of the die is a heating pipe, and the specific structure is the prior art, such as: the metal tube is provided with an electrothermal element and is led out by a lead-out rod, the gap part is tightly filled with crystallized magnesia powder with good heat resistance, heat conductivity and insulativity, and the tail part is added with a threaded sleeve and a sealing porcelain head for fixed installation.

Furthermore, the mold heating ring is arranged in the groove, and a U-shaped copper pressing strip is added to the upper half part of the mold heating ring to be attached to the surface of the mold to play a role in heat conduction and sealing.

Furthermore, the mold core of the mold is embedded into a template or a non-embedded integrated mold core template, the heating ring is grooved around the mold core on the template, heating resistance wires are arranged in the grooves, and then the mold core is filled with a thermal insulation material (such as epoxy resin).

The working principle is as follows: the heating temperature is set through the temperature control box, the current is conducted to the periphery of the mold core when the temperature of the current rises to the set temperature through the resistance of the heating tube in the mold heating ring, and the power supply is cut off when the temperature exceeds the upper limit of the set value under the detection of the thermocouple, or the power supply is recovered when the temperature is lower than the lower limit of the set value. The heating ring is formed by slotting the periphery of the mold core on the template and filling the heating resistance wire with a thermal insulation material, so that heat can be concentrated and conducted towards the center direction of the mold core instead of being conducted in a mode that the heat is radiated to the mold core through the surface of the mold, and therefore the heat loss is effectively avoided.

The design of the heating ring loop of the mold is required to comply with the requirement of heat balance, and the temperature deviation of the mold cavity/mold core periphery of the mold is controlled within +/-2 ℃. The loop design required for different mold cavity/core arrangements is also different, so that a thermal balance analysis is required. The temperature of the mold core is guaranteed to be uniform as much as possible, and the precision can reach +/-0.5 ℃.

The total power of the upper and lower templates of the hot pressing station is designed to be 84kw, time and electricity are saved at the moment, the coil designed by the device according to the maximum power value can ensure that the time required by the die to rise from the room temperature to the working temperature (130 ℃) is controlled within 10min, and the sizes of the heating tube and the resistance wire need to be calculated and considered according to the maximum power value.

The mold is designed by the following steps:

(1) grooving around the mold cavity and/or the mold core, and placing the mold heating ring in the groove; the heating ring of the mould is arranged in the groove, and a U-shaped copper pressing strip is added on the upper half part of the heating ring to be attached to the surface of the mould to play a role in heat conduction and sealing;

further, the core is loaded into the form by integral or inlaid means and then filled with a thermally insulating material (e.g., epoxy);

(2) arranging a plurality of thermocouples on the die, and measuring the temperature of the die;

(3) and a temperature control box is arranged and connected with the mold heating ring and the thermocouple to set and monitor the temperature.

And (2) a thermal balance analysis step is further included before the step (1), and the heating coil loop design of the die is carried out according to the thermal balance requirement. As shown in fig. 2, the adjacent positions of the two mold heating rings need to design a loop according to heat balance analysis, so that the phenomenon that the temperature of the mold core is uneven due to the fact that some parts of the mold core absorb large heat and some parts absorb small heat is avoided.

The heating temperature is set by the temperature control box, the current is conducted to the periphery of the mold by the heating tube resistor when the temperature of the heating tube resistor is increased to the set temperature, and the power supply is cut off when the temperature exceeds the upper limit of the set value under the detection of the thermocouple or is recovered when the temperature is lower than the lower limit of the set value. The temperature uniformity of the mold core is guaranteed as much as possible, the temperature deviation of the periphery is controlled within +/-2 ℃, and the precision can reach +/-0.5 ℃.

The utility model discloses still claim a paper pulp molding equipment, including make-up machine, above-mentioned fluid pressure type mode locking device and mould, the mould includes above-mentioned mould heating collar and temperature control device, and temperature control box and above-mentioned mould heating collar are connected to the make-up machine, come the control operation real-time demonstration on the make-up machine operation screen through PLC.

Technical scheme of the utility model beneficial effect

Adopt the utility model discloses a paper pulp moulding equipment with fluid pressure type mode locking device has following advantage:

1. and (3) fast die changing: a small amount of manual assistance operations are cooperated, and meanwhile, the hydraulic mold locking device is matched, so that the single mold loading and unloading time of the forming mold of the device can be controlled within 15 minutes.

2. Accurate temperature control: the design of a heating ring loop of the mold is required to comply with the requirement of heat balance, the temperature deviation of the circumference is controlled within +/-2 ℃, the temperature of the mold core is uniform, and the precision can reach +/-0.5 ℃. After the heating resistance wire is placed, the heating resistance wire is filled with a thermal insulation material, so that heat can be conducted in a direction of the center of the mold core in a concentrated manner, and the heat is conducted in a manner that the surface of the mold radiates to the mold core, and the loss of the heat is effectively avoided; the temperature control is real-time and accurate, and the surface temperature of the paper pulp molding shaping die is ensured to be consistent, so that the dimensional stability of the paper pulp molding product is ensured, the product deformation is reduced, and the like, and the yield of the paper pulp molding product is improved, and the power consumption is reduced.

3. Reduce the power consumption, traditional workstation heating method design power 108kw (24 heating tubes of upper and lower workstation), heat to target temperature time 30min, the utility model discloses heating device design power 84kw, heat to within 10min of target temperature time, this design energy-efficient economizes on electricity more than 300% to improve production efficiency and machine rate of utilization.

The forming equipment of the paper pulp molding product uses the hydraulic mode locking device to be matched with the mold constant temperature coil heating device to form an effective SMED system which accords with the molding industry.

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

FIG. 1 is a schematic structural view of a hydraulic mold locking device of the present invention;

fig. 2 is a schematic structural view of the mold heating ring of the present invention;

fig. 3(1) is a schematic structural view of the heating ring of the present invention;

FIG. 3(2) is a schematic view of a heating tube structure;

FIG. 4 is a sectional view of the hydraulic mold clamping device of the present invention;

FIG. 5 is a schematic structural view of the hydraulic mold locking device of the present invention;

fig. 6 is a schematic structural view of the forming apparatus of the present invention.

Description of reference numerals:

1-hot pressing lower die, 2-die heating ring, 3-thermocouple, 4-interface, 5-die core, 6-U-shaped copper pressing strip, 7-resistance wire, 8-stainless steel shell, 9-die, 10-thermocouple connection, 11-temperature control box, 12-operation screen, 13-forming machine, 14-connection device, 15-fastener, 16-stainless steel shell, 17-insulating magnesium chloride, 18-heating tube resistance wire, 19-non-heating area, 20-heating area, 21-wire group 1, 2; 22-wire group 3,4,5, 6; 200-a workbench; 201-hydraulic oil pipe; 202-a mold locating block; 300-a die clamper; 301-fixing block; 302-oil cylinder; 303-floating briquetting; 304-oil injection port; 305-T shaped base; 306-a U-shaped groove of the mould; 307-workbench T-shaped groove; 308-oil cylinder stroke; 401-sensor S1; 402-sensor S2; 403-sensor S3; 404-oil way 1; 405-oil way 2; 406-oil path 3; 407-hydraulic valve V1; 408-hydraulic valve V2; 409-hydraulic valve V3; 410-control module.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Examples

Fig. 1 shows a hydraulic mold locking device of pulp molding equipment, which comprises a mold quick locking device and an oil way control system. The mold rapid locking device is a mold clamping device 300, the lower half part of the mold clamping device 300 is a T-shaped structural part which is embedded into a T-shaped groove 307 of the workbench, the upper half part of the mold clamping device 300 is arranged in a U-shaped groove 306 of the mold, and an internal oil cylinder 302 is pushed by oil pressure to obtain clamping force. The hot-pressing lower die 1 is arranged on a workbench 200 of the pulp molding forming equipment, is accurately positioned by a die positioning block 202 arranged on the workbench 200, and is locked by controlling the stroke 308 of a descending oil cylinder of the die clamper 300 through the injection of hydraulic oil of a hydraulic oil pipe 201 after the positioning is finished. When the die is dismounted, the hydraulic oil output through the hydraulic oil pipe 201 controls the down-stroke 308 of the oil cylinder of the die clamper 300 to loosen the hot-pressing lower die 1.

The upper half part of the die clamper 300 mainly comprises a fixed block 301, an oil cylinder 302 and a floating press block 303, and one side of the floating press block 303 is provided with an oil injection port 304; the lower half part of the die clamper 300 comprises a T-shaped base 305, the T-shaped base 305 is connected with the oil cylinder 302, the oil cylinder 302 is connected with the floating pressing block 303 through a fixing block 301, and the die clamper 300 drives the floating pressing block 303 to move up and down in a U-shaped groove 306 of a die through the oil cylinder 302, so that the die loosening and locking steps are realized.

The table T-shaped groove 307 corresponds to the die U-shaped groove 306 to form a die clamping groove. The die clamping groove positions are multiple.

The device is matched with the size (600 x 960) of the existing die and is used for fixing the upper die, the lower die and the forming machine, four die clamping slots are designed in each die plate, and a single locking device can obtain the clamping force of 1000 kgf.

The oil circuit control system is composed of hydraulic electromagnetic valves 407, 408 and 409, hydraulic sensors 401, 402 and 403, a control module 410, a molding machine operation screen 12 and the like. The system controls hydraulic pressure, flow and direction through an electromagnetic valve element; and then the hydraulic pressure is converted into a standard signal by a hydraulic sensor and is transmitted to a control screen of the forming machine (the oil way control system can be integrated with a hydraulic guide rail mold lifting device of forming equipment of a pulp molding product into a same device by integration).

The specific operation steps are as follows:

a. and (3) locking the mould: after the control module 410 sends out an oil delivery instruction, the oil pump is started, the hydraulic electromagnetic valve executes pressure and flow control, hydraulic oil is injected into the die clamper oil cylinder 302 through an oil pipe, and the floating press block 303 presses downwards to lock the die 9;

b. and (3) loosening operation of the mold: when the control module 410 sends an instruction to unload the oil pressure, the oil pump is started, the hydraulic electromagnetic valve executes pressure and flow control, hydraulic oil flows out of the die clamper oil cylinder 302, the device floating pressing block 303 rises, and the loosening operation is completed.

The molding apparatus is operated by the control module 410 to instruct the oil pump to deliver oil pressure to the locking device to complete the movement of the mechanism; the control module simultaneously feeds back information to be displayed by the operation panel 12 (connected to the molding machine 13).

The optimal reasonable working temperature of the hydraulic system is within 65 ℃, if the temperature is exceeded for a long time, the device fails or the service life is seriously shortened, and the die equipment is damaged, so that the heat insulation sheet needs to be added on the clamping surface of the floating pressing block 303 and the die 9, and the heat insulation sleeve needs to be externally coated on the oil pipe part, so that the temperature can be controlled below 80 ℃.

The control module 410 monitors the oil pressure value in this arrangement by feedback signals and locks the machine motion functions when the oil pressure value is below a set value (i.e., the lock force does not reach the set value).

When the hydraulic guide rail device is matched with a hydraulic guide rail device for use, when the hydraulic guide rail floats upwards for working, the hydraulic device with the mold clamping device locking function automatically fails; on the contrary, when the die clamper is in a locking working state, the hydraulic device with the floating function of the hydraulic guide rail automatically fails. An oil path 1401 and an oil path 3403 in the control module are used for a locking device, and an oil path 2402 is used for a hydraulic guide rail.

After the mold locking action is completed, the mold 9 is fixed on the worktable 200, the temperature control box 11 is started, and the mold heating ring 2 in the mold 9 is controlled to start heating until the set temperature.

The mould 9 of the paper pulp molding product shown in figure 2 is provided with a constant temperature coil heating device which comprises a mould heating ring 2 and a temperature control device, wherein the mould heating ring 2 is arranged on the front side and the back side of the mould 9, a groove is formed around a mould cavity 5 to place the mould heating ring 2 in the groove, the mould heating ring 2 is connected with a power supply through interfaces on the two sides of the mould, and a plurality of thermocouples 3 are arranged on a hot-pressing lower mould 1 to measure the temperature around a mould core 5. The loops of the mold heating rings 2 on the front side and the back side of the mold 9 can be the same or different. The loops on the front side and the back side of the mold 9 in this embodiment are different according to the structure of the mold core. The mold heating ring 2 is placed in the groove, and a U-shaped copper pressing strip 6 is added to the upper half part of the mold heating ring to be attached to the surface of the mold (as shown in figure 3). The mold core 5 is arranged in the mold plate of the hot-pressing lower mold 1 in an integral or embedded mode, the heating coil 2 is provided with a groove around the mold core 5 on the mold plate, the heating resistance wire 7 is arranged in the stainless steel shell 8 and is arranged in the groove around the mold core 5, the U-shaped copper pressing strip 6 is added to the upper half part of the mold to be attached to the surface of the mold, and then the mold is filled with a thermal insulation material. The loop design required for different mold cavity/core 5 arrangements is also different, so that a thermal balance analysis is required before grooving. The design of the loop of the mold heating ring 2 conforms to the requirement of thermal balance, and the temperature deviation of the mold cavity/mold core 5 circles is controlled within +/-2 ℃.

The temperature control box 11 is connected with the mold heating ring 2, is arranged on one side of the machine table and has the functions of temperature setting and monitoring. The forming machine 13 controls the heating temperature of the workbench through a temperature control element, the heating ring 2 is connected and integrated to the temperature control box 11 on the inner side of the forming machine through a wire group 1,221 and wire groups 3,4,5 and 622, the thermocouples 3 are respectively connected and integrated to the temperature control box 11 through thermocouple wires 10, and the operation screen 12 is connected with the temperature control box 11.

Fig. 6 shows the pulp molding apparatus of the present invention, which includes a molding machine 13, the above hydraulic mold locking device 300 and a mold 9, the mold 9 includes a mold heating ring 2 and a temperature control device, the molding machine 13 is connected to a temperature control box 11 and the above mold heating ring 2, and the operation is controlled by a PLC to be displayed on an operation screen 12 of the molding machine in real time; the hydraulic locking device is controlled to complete the locking and the unlocking of the die 9 through the operation of the control module 304; the control module 304 simultaneously displays the feedback information through the operator panel 12 connected to the molding machine.

When the paper pulp molding machine works, the total power of the upper and lower templates of the hot pressing station of the paper pulp molding machine 13 is designed to be 84kw, time and electricity are saved at the moment, the time for the mold to rise from room temperature to the required time can be controlled to be about 10min, the heating temperature is set through the temperature control box 11 (the working temperature is set to be 130 ℃ in the embodiment), the current is conducted to the periphery of the mold core 5 through the heating tube resistor 7 in the mold heating ring 2 to enable the temperature to rise to the set temperature, and the power supply is cut off when the temperature exceeds the upper limit of the set value under the detection of the thermocouple 3, or the power supply is recovered. The utility model discloses guarantee mold core temperature is even, and the control of week temperature deviation is within +/-2 degrees centigrade, and is accurate can reach within +/-0.5 degree centigrade. The utility model discloses the control by temperature change is real-time accurate, guarantees that paper pulp molding plastic mould surface temperature is unanimous to guaranteed paper pulp molding product dimensional stability, reduced product deformation etc. thereby improve paper pulp molding product yield, still reduced the power consumption simultaneously, energy-efficient economize on electricity more than 300%.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. The hydraulic mode locking device of the pulp molding forming equipment comprises a quick mold locking device and an oil way control system and is characterized in that the quick mold locking device is embedded into a workbench and is pushed by hydraulic pressure to obtain clamping force, and the oil way control system controls the hydraulic pressure, the flow and the direction.

2. The hydraulic mold clamping device for pulp molding apparatus according to claim 1, wherein the mold quick-locking device is a mold clamper.

3. The hydraulic mold locking device for pulp molding apparatus as claimed in claim 2, wherein the lower half of the mold clamping device is a T-shaped structural member embedded in the T-shaped groove of the worktable, and the upper half is disposed in the U-shaped groove of the mold.

4. The hydraulic mold locking device for pulp molding apparatus according to claim 3, wherein the upper half part is composed of a fixed block, an oil cylinder and a floating press block, and the floating press block is moved in the U-shaped groove of the mold by the oil cylinder.

5. The hydraulic mold clamping device for a pulp molding apparatus according to claim 4, wherein said lower half portion includes a T-shaped base, and said T-shaped base is connected to said cylinder.

6. The hydraulic mold locking device for pulp molding apparatus according to claim 3, wherein the T-shaped groove of the table corresponds to the U-shaped groove of the mold to form a mold clamping groove.

7. The hydraulic mold locking device of pulp molding equipment according to claim 1, wherein the oil path control system is composed of a hydraulic solenoid valve, a hydraulic sensor, a control module and a molding machine control panel.

8. A pulp molding forming device comprises a forming machine, a hydraulic mode locking device and a mold according to any one of claims 1 to 7, and is characterized in that the mold comprises a mold heating ring and a temperature control device, the forming machine is connected with the temperature control device and the mold heating ring, and the operation is controlled by a PLC (programmable logic controller) to be displayed on an operation screen of the forming machine in real time; the hydraulic locking device is controlled to lock and unlock the die through the operation of the control module; the control module simultaneously feeds back information to be displayed through an operation screen connected to the molding machine.

9. The pulp molding apparatus of claim 8, wherein the mold heating ring is a groove around the mold cavity and/or the mold core, and the mold heating ring is placed in the groove.

10. The pulp molding apparatus according to claim 8, wherein the temperature control device is connected to the mold heating ring, and the heating temperature of the table is controlled by a temperature control element.

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