Veneer moisture detection device

Abstract

The utility model belongs to the technical field of veneer processing, and particularly discloses a veneer moisture detection device which comprises a conveying device used for conveying veneers, a detection frame is erected on the conveying device, and a microwave moisture detector used for detecting moisture content is installed on the detection frame. The conveying device comprises a conveying belt used for bearing veneers and conveying rollers used for driving the conveying belt to operate, a conveying platform is formed on the upper side face of the conveying belt, the microwave moisture detector comprises a signal transmitting head and a signal receiving head, and the signal transmitting head and the signal receiving head are arranged on the upper side and the lower side of the conveying platform respectively. The signal transmitting head and the signal receiving head are oppositely arranged, and microwave signals can accurately penetrate through the wood veneer and receive reflected signals, so that the moisture content of the wood veneer is accurately measured, the moisture detection efficiency and accuracy of the wood veneer are effectively improved, and errors and time cost of manual detection are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the veneer processing technical field, concretely relates to a veneer moisture detection device. BACKGROUND

[0002] In the existing wood or veneer moisture detection technology, there is a common problem of poor environmental adaptability. Because the production and processing environment of wood or veneer is often complex and changeable, including temperature, humidity, dust and other factors, which can affect the accuracy and stability of the moisture detection equipment. Traditional moisture detection methods, such as weight method, resistance method, etc., often need to be carried out under specific conditions, which is difficult to adapt to various changes in the actual production environment. This not only limits the wide application of moisture detection equipment, but also increases the error and instability of the detection results, and is a contact type measurement, which can easily increase the error, and is inconvenient to operate, and it is difficult to realize continuous online measurement, which limits the improvement of production efficiency. SUMMARY

[0003] In view of the problem that the veneer moisture detection efficiency in the prior art needs to be improved, a veneer moisture detection device is provided. The utility model provides the following technical scheme:

[0004] A veneer moisture detection device, comprising a conveying device for conveying veneer, a detection frame is arranged on the conveying device, a microwave moisture detector for detecting moisture content is installed on the detection frame, the conveying device comprises a conveying belt for receiving veneer and a conveying roller for driving the conveying belt to run, the upper side of the conveying belt forms a conveying platform, the microwave moisture detector comprises a signal emitting head and a signal receiving head, the signal emitting head and the signal receiving head are arranged on the upper and lower sides of the conveying platform, and the signal emitting head and the signal receiving head are arranged opposite to each other.

[0005] Preferably, the conveying device further comprises a negative pressure adsorption feeding assembly, the negative pressure adsorption feeding assembly comprises a feeding belt, a negative pressure box, a feeding roller and a feeding tension roller, the feeding belt is enclosed outside the feeding roller and the feeding tension roller, the negative pressure box is provided with a connecting port for connecting an external air source and a negative pressure port for providing adsorption force, and the negative pressure port is arranged on the upper side of the negative pressure box.

[0006] Preferably, the feeding belt is provided with a ventilation hole for communicating with the negative pressure port.

[0007] Preferably, the conveying device further comprises a discharging device, the discharging device is arranged on the two sides of the detection frame separately from the negative pressure adsorption feeding assembly, the discharging device comprises a discharging roller and a discharging belt, the conveying roller is provided with two, the discharging belt is wound outside the discharging roller and one conveying roller, and the feeding belt is wound outside the feeding roller and the other conveying roller.

[0008] Preferably, an auxiliary tension roller is arranged between the two conveying rollers.

[0009] Preferably, a shell is arranged outside the signal transmitting head and the signal receiving head, and the detection frame comprises an upper cross beam, a lower cross beam and a side support connected to two ends of the upper cross beam and two ends of the lower cross beam, and the shell is mounted on the cross beam and the lower cross beam.

[0010] Preferably, the upper cross beam and the lower cross beam are arranged horizontally.

[0011] Preferably, mounting grooves are arranged on the upper cross beam and the lower cross beam, the mounting grooves are arranged horizontally, the shell is slidably connected to the mounting grooves through positioning blocks, and the position is locked through fastening bolts.

[0012] Preferably, the conveying platform is arranged horizontally between the upper cross beam and the lower cross beam.

[0013] Preferably, the signal transmitting head and the signal receiving head are arranged obliquely.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By adopting the microwave moisture detector, the wood skin moisture is rapidly and non-contact measured, and the error and time cost of the traditional manual detection method are avoided.

[0016] 2. The design of the negative pressure adsorption feeding assembly and the auxiliary tension roller ensures the stability and accuracy of the wood skin in the conveying process, and avoids the detection error caused by slipping or misplacement.

[0017] 3. By the design of the mounting groove and the positioning block, the shell of the microwave moisture detector can be conveniently mounted and dismounted, and the equipment is convenient to maintain and upgrade. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the overall structure schematic view of the utility model;

[0019] Figure 2 is Figure 1 the sectional structure schematic view of A-A in the utility model;

[0020] Figure 3 is Figure 1 the sectional structure schematic view of B-B in the utility model;

[0021] Figure 4 is the three-dimensional structure schematic view of the utility model;

[0022] In the attached diagram, 1. Conveying device; 111. Conveyor belt; 112. Conveying roller; 113. Auxiliary tension roller; 121. Feeding belt; 1211. Ventilation hole; 122. Negative pressure box; 123. Feeding roller; 124. Feeding tension roller; 131. Discharge roller; 132. Discharge belt; 2. Detection frame; 21. Upper crossbeam; 22. Lower crossbeam; 23. Side support; 24. Mounting groove; 3. Microwave moisture detector; 31. Signal transmitter; 32. Signal receiver; 33. Housing; 34. Positioning block; 4. Wood veneer. Detailed Implementation

[0023] The directional terms mentioned in the following embodiments, such as "up", "down", "left", and "right", are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustration and not for limiting the invention of this utility model.

[0024] Example 1

[0025] like Figures 1-4 As shown, a wood veneer moisture detection device includes a conveying device 1 for conveying wood veneer 4, a detection frame 2 mounted on the conveying device 1, and a microwave moisture detector 3 for detecting moisture content installed on the detection frame 2. The conveying device 1 includes a conveyor belt 111 for receiving wood veneer 4 and a conveyor roller 112 for driving the conveyor belt 111. The upper side of the conveyor belt 111 forms a conveying platform. The microwave moisture detector 3 includes a signal transmitter 31 and a signal receiver 32. With the help of a computer, it can analyze and process microwave signals and convert them into moisture information. The signal transmitter 31 and the signal receiver 32 are respectively located on the upper and lower sides of the conveying platform and are arranged facing each other. The microwave signal can accurately penetrate the wood veneer 4 and receive the reflected signal, thereby accurately measuring the moisture content of the wood veneer 4, effectively improving the efficiency and accuracy of wood veneer 4 moisture detection, and reducing the error and time cost of manual detection.

[0026] Specifically, the conveying device 1 also includes a negative pressure adsorption feeding assembly, which includes a feeding belt 121, a negative pressure box 122, a feeding roller 123, and a feeding tension roller 124. The feeding belt 121 surrounds the feeding roller 123 and the feeding tension roller 124. The negative pressure box 122 is provided with a connection port for connecting to an external air source and a negative pressure port for providing adsorption force. The negative pressure port is located on the upper side of the negative pressure box 122, which can stably adsorb and convey the wood veneer 4, avoid the slippage or misalignment of the wood veneer 4 during the conveying process, and improve the accuracy and stability of the detection.

[0027] Specifically, the feeding belt 121 is provided with ventilation holes 1211, and the interval between the negative pressure ports is smaller than the size of the ventilation holes 1211. As the feeding belt 121 rotates, the negative pressure ports can be kept connected, so that the negative pressure can be evenly applied to the feeding belt 121, further enhancing the adsorption effect of the wood veneer 4 and ensuring the stability of the conveying.

[0028] Specifically, the conveying device 1 further comprises a discharging device, which is arranged on the two sides of the detection frame 2 separately from the negative pressure adsorption feeding assembly. The discharging device comprises a discharging roller 131 and a discharging belt 132. Two conveying rollers 112 are arranged in front of and behind each other. The discharging belt 132 is wound around the discharging roller 131 and one conveying roller 112. The feeding belt 121 is wound around the feeding roller 123 and the other conveying roller 112. The automatic discharging of the veneer 4 is realized. In cooperation with the negative pressure adsorption feeding assembly, a complete automatic conveying process is formed, and the overall work efficiency is improved.

[0029] Specifically, an auxiliary tensioning roller 113 is further arranged between the two conveying rollers 112. The auxiliary tensioning roller 113 is arranged on the lower side of the two conveying rollers 112. The tensioning degree of the conveying belt 111 is ensured to be moderate. The unstable conveying or failure caused by the relaxation of the conveying belt 111 is avoided.

[0030] Specifically, the signal transmitting head 31 and the signal receiving head 32 are each provided with a shell 33. The signal transmitting head 31 and the signal receiving head 32 are protected from the interference and damage of the external environment. The durability and stability of the equipment are improved. The detection frame 2 comprises an upper cross beam 21, a lower cross beam 22 and a side support 23. The side support 23 is connected to the two ends of the upper cross beam 21 and the two ends of the lower cross beam 22. The shell 33 is installed on the cross beam and the lower cross beam 22. The upper cross beam 21 and the lower cross beam 22 are both arranged horizontally. The stability of the conveying platform and the microwave moisture detector 3 is ensured. The accuracy of detection is further improved. The conveying platform is horizontally arranged between the upper cross beam and the lower cross beam 22. The stability of the veneer 4 during the conveying process is ensured. The detection error caused by the inclination is avoided.

[0031] Specifically, the signal transmitting head 31 and the signal receiving head 32 are arranged obliquely. One signal transmitting head 31 and one signal receiving head 32 form a group. There are two groups in total. The two groups are arranged in parallel. The thickness and shape of the veneer 4 can be better adapted. The penetration effect of the microwave signal and the receiving sensitivity are improved. The accuracy of moisture detection is further improved.

[0032] Example 2

[0033] On the basis of example 1, the mounting groove 24 is arranged on the upper cross beam 21 and the lower cross beam 22. The mounting groove 24 is arranged horizontally. The shell 33 is slidably connected to the mounting groove 24 through the positioning block 34. The position is locked through the fastening bolt. The installation and disassembly of the shell 33 are more convenient and fast. The maintenance and upgrading of the equipment are facilitated.

Claims

1. A veneer moisture detection device, characterized in that, The device includes a conveying device (1) for conveying veneer (4), a detection frame (2) is mounted on the conveying device (1), and a microwave moisture detector (3) for detecting moisture content is installed on the detection frame (2). The conveying device (1) includes a conveyor belt (111) for receiving veneer (4) and a conveyor roller (112) for driving the conveyor belt (111) to run. The upper side of the conveyor belt (111) forms a conveying platform. The microwave moisture detector (3) includes a signal transmitter (31) and a signal receiver (32). The signal transmitter (31) and the signal receiver (32) are respectively located on the upper and lower sides of the conveying platform, and the signal transmitter (31) and the signal receiver (32) are arranged facing each other.

2. The veneer moisture detection device according to claim 1, characterized in that, The conveying device (1) further includes a negative pressure adsorption feeding assembly, which includes a feeding belt (121), a negative pressure box (122), a feeding roller (123), and a feeding tension roller (124). The feeding belt (121) surrounds the feeding roller (123) and the feeding tension roller (124). The negative pressure box (122) is provided with a connection port for connecting to an external air source and a negative pressure port for providing adsorption force. The negative pressure port is located on the upper side of the negative pressure box (122).

3. The veneer moisture detection device according to claim 2, characterized in that, The feeding belt (121) is provided with a vent (1211) for connecting to the negative pressure port.

4. The veneer moisture detection device according to claim 2, characterized in that, The conveying device (1) also includes a discharge device. The discharge device and the negative pressure adsorption feeding assembly are respectively located on both sides of the detection frame (2). The discharge device includes a discharge roller (131) and a discharge belt (132). There are two conveying rollers (112). The discharge belt (132) is wrapped around the discharge roller (131) and one conveying roller (112). The feeding belt (121) is wrapped around the feeding roller (123) and another conveying roller (112).

5. The veneer moisture detection device according to claim 4, characterized in that, An auxiliary tensioning roller (113) is also provided between the two conveying rollers (112), and the auxiliary tensioning roller (113) is located on the lower side of the two conveying rollers (112).

6. The veneer moisture detection device according to claim 1, characterized in that, Both the signal transmitter (31) and the signal receiver (32) are provided with a housing (33). The detection frame (2) includes an upper crossbeam (21), a lower crossbeam (22) and a side support (23). The side support (23) is connected to both ends of the upper crossbeam (21) and both ends of the lower crossbeam (22). The housing (33) is installed on the crossbeam and the lower crossbeam (22).

7. The veneer moisture detection device according to claim 6, characterized in that, Both the upper crossbeam (21) and the lower crossbeam (22) are horizontally arranged.

8. The veneer moisture detection device according to claim 6 or 7, characterized in that, The upper crossbeam (21) and the lower crossbeam (22) are provided with mounting grooves (24). The mounting grooves (24) are horizontally arranged. The housing (33) is slidably connected to the mounting grooves (24) by a positioning block (34) and locked in position by fastening bolts.

9. The veneer moisture detection device according to claim 6, characterized in that, The conveying platform is horizontally positioned between the upper and lower crossbeams (22).

10. The veneer moisture detection device according to claim 1 or 6, characterized in that, The signal transmitter (31) and the signal receiver (32) are tilted.

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