hot press dryer machine

hot press dryer machine

hot press dryer machinehot press dryer machinehot press dryer machinehot press dryer machinehot press dryer machinehot press dryer machine

1. Name of equipment: hot press machine for veneer drying work.

2. Function of equipment: used for drying the veneers for plywood board.

3. Materials of equipment: steel plate (material Q235)

4. Capacity of equipment: 0.75-1M3/h

5. Application and features

5-1. Application: This equipment is mainly used in the drying work of birch veneers.

5-2. Working principle:

The hydraulic pump station provides mechanical energy,

hydraulic oil top drive hot plate to complete the hot press closure、

compression and unloading function.The boiler provides heat energy

to achieve the purpose of improving adhesive strength and production efficiency,

the special design grooving on the hot platen,more easy for moisture inside

the veneers come out from the veneers.

5-3. Features of equipment:

This equipment has a solid structure、

stable performance,it is easy to operate and so on.

6. Main technical parameters of hot press type veneer dryer machine

6-1. Technical parameters

Pressure: 800KN

Steel frame: CNC cutting framework

Hot plate size: 2600*1600*42mm

Grooving model, deepth: 2mm

Layers: 15

Hot platen gap height: 50mm

Main cylinders: Dia.100mm*4pcs

Main cylinders body: solid 

Cylinder original: wuxi brand,best quality of CHINA.

Motor power: 18.5KW 

Motor brand: SHANDONG HUALI,FAMOUS BRAND IN CHINA.

With same time close device 

Thickness: 1-10mm

7. Composition description of hot press machine

7-1. Main component:

a. Frame

b. the middle beam 

c. hot plate

d. hydraulic pressure station

e. Electric control cabinet

7-2. The frame is composed of 35mm,22mm,10mm steel plate.

7-3. The middle beam is placed on the top of the cylinder,

used to support the hot platen to complete the closure of hot press.

7-4. The hot plate is deep hole drilling plate,provided by the boiler heat energy,

connected by the metal tube boiler and hot platen heat transfer oil,

from the steam into the hot plate internal. (see attached sheet)

7-5. The hydraulic station is to be provided mechanical energy

by the motor and completed through hydraulic oil roof.

8. Installation and application instructions of hot press type veneer dryer machine

8-1. Installation of equipment:

First,we should determine that we has completed production according

to the standard drawing,and has been completely solidified.

8-2. Installation method: 

Put the hot press frame into foundation pit by forklift or crane,the base plane on the frame

of hot press machine is the standard,the frame of hot press machine need to be placed horizontally and pad placed firmly;

then, put the cylinder into it, connecting the hydraulic power pack and boiler;connecting the hydraulic power pack

and the steam pipe of boiler as far as possible parallel or vertical position,the connection is completed,

the tank need to be cleaned;then put the middle beam and hot pressing plate into it;finally,

the 380 volt three-phase power need to be connected with the cabinet.

8-3. Adjustment method: 

equipment installation is completed,then,we need adjust pressure gauge

and high pressure relief valve according to the pressure plate produced needs;

after passing the adjustment,non staff are under the ban of adjustment,

the adjustment method:ensuring the low pressure gauge contain

between 1—3Mpa,adjusting high pressure gauge pressure according to the pressure which production

of sheet metal needs,and ensuring red and green pointers to contain a distance 5MPa at least.

8-4. pre inspection: 

after the completion of adjustment,we need add the standard 46 hydraulic oil into pump station

(about 200 kilograms of hydraulic oil);and then check the connecting parts between channel

for oiling are connected firmly or not;after confirming no oil spill site,open oil inlet valve.

Press the touch switch on the electrical cabinet to test machine,stop lift when the pressure gauge pointer to 5Mpa,

check whether there is leakage of oil between the connecting parts,if not the machine can be used.

9. Maintenance and maintenance of hot press type veneer dryer machine

9-1. The operator must be familiar with the structure and performance characteristics

and the mechanical principle,can master the operation button,and must operate according to operating procedures.

9-2. Operators must wear overalls and insulated shoes.

They need to pay attention to the operation of equipment when they operate the machine,

if they found abnormal sound or vibration,they should stop operate machine to inspection immediately.

9-3. Operator must check that weather the motor and pump rotation is flexible and steering pump

is correct at first boot. Adding oil from the tubing port to oil pump until it be filled.

9-4. The tank cap must be covered and be cleaned by the hydraulic oil.

The hydraulic oil should be filtrated seriously at an average of 3500 hours and be replaced,

maximum allowed time of replacement is 7000 hours;the filter screen should be cleaned

or replaced every 200 hours when the machine works; the normal temperature should

be between 25-55℃ when the machine works.

9-5. The cylinder piston edge need to keep clean at any time and ensure no debris in order to avoid scoring piston.

10. General failure and troubleshooting of hot press type veneer dryer machine

10-1. If motor appear jitter phenomenon,worker should promptly check machine

to ensure weather the three-phase circuit is short circuit,if it is,the machine should be repaired timely.

10-2. The connector is not wearing parts,if it is bad,workers should check machine to ensure weather

the pump operation is normal timely,the method is: turning pump shaft by hand after the blackout,

if the pump shaft is fixed,this shows that oil pump is real bad.

10-3. Such as the discovery of oil spills,workers should promptly check the O type seals,

if it is damaged,workers should replace it timely.

10-4. The common faults of gear pump is noisy,if this phenomenon appears.

① workers should check machine to ensure weather the oil level in the tank over the filter net,if not,the machine should be filled with oil.

② Checking machine to ensure whether the filter is blocked because of dirty,if it is blocked, it need be cleaned or replaced.

③ Checking machine to ensure weather the screw which connect parts is loosen,if the screw is loosen,the machine will make too much noise.

④ The oil inlet valve is ban of being closed,if it is closed,the machine will make too much noise.

10-5. The common fault of ram pump is that the motor is running for long time rather than stop and the pressure is not boost;

when this fault appears,workers should check machine to ensure weather the oil return of overflow valve is too large,

if it has this problem,it shows that the ram pump is abraded seriously or the adjustment of high pressure relief valve is not correct,

it need to be adjusted to high pressure relief valve clockwise by hands to boost,and adjust it in counter-clockwise direction to relax the pressure.

10-6. High pressure tubing is prohibited repairing with pressure to prevent accidents.

10-7. Pressure gauge declines rapidly: 

① The manual hydraulic control valve is not oil spilling,when the machine is not working,

if it appears, the manual hydraulic control valve should be replaced;

② Checking machine to ensure weather the high-pressure one-way valve

and low-pressure one-way valve work is working normally,otherwise it should be replaced.

10-8. Low voltage motor does not start: Checking machine to ensure weather the emergency

stop button of electric source,low voltage switch,fuse,low voltage contactor are damaged,

if the are damaged,they should be replaced promptly.

10-9. High voltage motor does not start or stop:

Checking machine to ensure weather the relay or high pressure gauge is damaged,

if it is damaged,it need to be replaced in time.

11. Drawing of hot press type veneer dryer machine