High-efficiency dispensing toothed joint system

Abstract

This utility model belongs to the field of wood processing technology, specifically disclosing a high-efficiency adhesive dispensing and splicing system. It includes an adhesive dispensing mechanism for applying adhesive to wood veneers. A first conveying device is located at the front of the dispensing mechanism for conveying the (N+1)th veneer, with the feeding direction from front to back. A first cutting device for aligning the ends of the veneers is located at the rear of the dispensing mechanism. A second conveying device is located at the rear of the dispensing mechanism for conveying the Nth veneer. A second cutting device for aligning the ends of the veneers is located at the rear of the dispensing mechanism. The second cutting device can precisely align the ends of the veneers to ensure the veneer length meets splicing requirements, improving the accuracy and quality of splicing. A cold pressing device is located at the front of the dispensing mechanism for pressing and splicing the (N+1)th and Nth veneers. Its pressing process is stable and reliable, effectively reducing splicing defects. Its special arrangement reduces bonding waiting time and improves splicing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of wood processing technology, specifically relating to a high-efficiency glued toothed joint system. Background Technology

[0002] Currently, in the production process of multi-layer plywood, vertical veneers are an essential raw material for the mechanical structure of plywood. However, due to the influence of the diameter of fast-growing timber and the material utilization rate, it is impossible to produce whole sheets of vertical veneers that meet the size requirements of plywood. Traditional vertical veneer splicing equipment generally suffers from low production efficiency, inability to achieve fully automated splicing, poor splicing effect (such as uneven splicing gaps and overlapping joints), and splicing methods that do not conform to the mechanical structure of plywood. These problems seriously affect the process of automation in composite board production and restrict the development of plywood enterprises and the improvement of product quality.

[0003] The existing Chinese invention patent with publication number CN111331693A provides a single-plate continuous toothed joint machine, which adopts a cooling pressing method and face-to-face contact pressing. Although the pressing effect is good and the toothed joint strength is high, its splicing efficiency still needs to be improved. Utility Model Content

[0004] To address the issue of insufficient splicing efficiency in existing technologies, a high-efficiency adhesive-dispensing toothed joint system is proposed. This utility model provides the following technical solution:

[0005] A high-efficiency adhesive dispensing and splicing system includes an adhesive dispensing mechanism for brushing adhesive onto wood veneers, a first conveying device for conveying the (N+1)th wood veneer on the front side of the adhesive dispensing mechanism, the feeding direction being from front to back; and a first cutting device for trimming the ends on the first conveying device.

[0006] The dispensing mechanism is provided with a second conveying device for conveying the Nth veneer; the second conveying device is provided with a second cutting device for aligning the ends to a fixed length.

[0007] The front side of the dispensing mechanism is equipped with a cold pressing device for pressing and splicing the N+1th veneer and the Nth veneer.

[0008] Preferably, the dispensing mechanism includes a glue tank, a dispensing claw, and a dispensing drive device for driving the dispensing claw to move towards the glue tank, wherein the dispensing claw is disposed on the upper side of the glue tank.

[0009] Preferably, the dispensing mechanism, the first conveying device, the first cutting device, the second conveying device, the second cutting device, and the cold pressing device are all mounted on the same frame.

[0010] Preferably, the dispensing drive device is a cylinder.

[0011] Preferably, the dispensing claw slides up and down to connect to the frame.

[0012] Preferably, the outside of the cold pressing device is provided with an auxiliary heat dissipation device for accelerating cooling.

[0013] Preferably, the auxiliary heat dissipation device is a fan.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention places the glue dispensing structure behind the cold pressing device. While the tail end of the (N+1)th veneer is glued and conveyed to the cold pressing position via a second conveyor, the (N+2)th veneer, after its end-aligning process, is also conveyed to the cold pressing position by the first conveyor to join and cold press with the (N+1)th veneer. This eliminates the waiting process and effectively improves the splicing efficiency of the finger jointing machine. While ensuring splicing quality, actual measurements show that it can increase the daily output of veneer by more than 10%. Furthermore, an auxiliary heat dissipation device is installed on the outside of the cold press to accelerate glue cooling and reduce the time required for the glue to strengthen, further improving splicing efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the splicing process during the implementation of the Chinese invention patent with publication number CN111331693A;

[0018] Figure 3 This is a schematic diagram of the splicing process during the implementation of this utility model;

[0019] In the attached drawings, 1 is the first conveying device; 2 is the first cutting device; 3 is the cold pressing device; 4 is the dispensing mechanism; 41 is the dispensing claw; 42 is the glue tank; 5 is the second conveying device; and 6 is the second cutting device. Detailed Implementation

[0020] 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.

[0021] like Figure 1 and Figure 3 As shown, an efficient adhesive dispensing and splicing system includes an adhesive dispensing mechanism 4 for brushing adhesive onto wood veneers. A first conveying device 1 for conveying the N+1th wood veneer is provided on the front side of the adhesive dispensing mechanism 4, with the feeding direction from front to back. A first cutting device 2 for trimming the ends is provided on the first conveying device 1, which can quickly and accurately trim the front end of the wood veneer to ensure that the front end of the wood veneer is neat and provides a good foundation for subsequent splicing.

[0022] The dispensing mechanism 4 is equipped with a second conveying device 5 for conveying the Nth veneer. The second conveying device 5 can stably convey the Nth veneer to the designated position, ensuring the smooth dispensing and splicing. The second conveying device 5 is equipped with a second cutting device 6 for aligning the tail end and fixing the length. The second cutting device 6 can accurately align the tail end of the veneer, so that the length of the veneer meets the splicing requirements, improving the accuracy and quality of splicing.

[0023] The front side of the dispensing mechanism 4 is equipped with a cold pressing device 3 for pressing and splicing the N+1th veneer and the Nth veneer. The cold pressing device 3 can provide sufficient pressure to fully integrate the glue and ensure a firm splice. At the same time, its pressing process is stable and reliable, which can effectively reduce the occurrence of splicing defects. Specifically, its special arrangement can improve splicing efficiency, as detailed in the working principle section below.

[0024] Specifically, both the first cutting device 2 and the second cutting device 6 use toothed blades to cut out toothed shapes, which facilitates splicing and can more firmly fix the veneer. During the cutting process, the offset and deformation of the veneer are reduced, and the cutting accuracy and quality are improved.

[0025] Specifically, the dispensing mechanism 4 includes a glue tank 42, a dispensing claw 41, and a dispensing drive device for driving the dispensing claw 41 to move towards the glue tank 42. The dispensing claw 41 is located on the upper side of the glue tank 42. The dispensing claw 41 can accurately take the glue from the glue tank 42 and apply it evenly to the wood veneer, ensuring that the amount and range of glue application are appropriate and improving the dispensing effect.

[0026] Specifically, the dispensing mechanism 4, the first conveying device 1, the first cutting device 2, the second conveying device 5, the second cutting device 6, and the cold pressing device 3 are all mounted on the same frame, making the entire system compact, occupying a small area, easy to install and maintain, and making the collaborative work between the devices more efficient.

[0027] Specifically, the dispensing drive device uses a cylinder, which has a fast response speed and stable driving force.

[0028] Specifically, the dispensing claw 41 slides up and down to connect to the frame, making the movement of the dispensing claw 41 more stable, reducing shaking and deviation during the movement, and ensuring the accuracy and stability of dispensing.

[0029] Specifically, an auxiliary heat dissipation device for accelerating cooling is provided on the outside of the cold pressing device 3. Specifically, the auxiliary heat dissipation device adopts a fan, which further reduces the time waiting for the adhesive to strengthen and further improves the splicing efficiency.

[0030] Working principle: The (N+1)th veneer is fed from the front. After the first cutting device 2 completes the end-trimming action, the first conveying device 1 transfers the (N+1)th veneer to the cold pressing device 3. Then, the cold pressing device 3 splices the Nth veneer, which has already been glued, with the (N+1)th veneer and uses cold pressing to solidify the glue. Then, the first conveying device 1 performs an inching motion to ensure splicing quality. Then, the first cutting device 2 performs a tail-trimming action on the (N+1)th veneer. After that, the cold pressing device 3 detaches from the (N+1)th veneer, and the (N+1)th veneer is conveyed to the second conveying device 5. Then, the tail end of the (N+1)th veneer is glued and transferred to the cold pressing position by the second conveying device 5. At the same time, the (N+2)th veneer, after completing the end-trimming action, is also transferred to the cold pressing position by the first conveying device 1 and spliced ​​with the (N+1)th veneer for cold pressing. This cycle repeats continuously.

[0031] like Figure 2 As shown, Chinese invention patent CN111331693A discloses a continuous finger-jointing machine for veneers. Its glue dispensing structure is located in front of the cold pressing device 3. The trimming action of the (N+1)th veneer requires waiting for the completion of the conveying action of the Nth veneer, resulting in low efficiency. This utility model patent improves upon this by dispensing glue at the tail end of the (N+1)th veneer and conveying it backward through the second conveying device 5 to the cold pressing position. Simultaneously, the (N+2)th veneer, after completing its trimming action, is also conveyed to the cold pressing position by the first conveying device 1, where it is joined and cold-pressed with the (N+1)th veneer, eliminating the waiting process. While this improvement may seem minor, it effectively increases the splicing efficiency of the finger-jointing machine. While ensuring splicing quality, actual measurements show that it can increase the daily veneer output by more than 10%.

Claims

1. A high-efficiency dispensing toothed joint system, characterized in that, It includes a dispensing mechanism (4) for applying adhesive to wood veneer, and a first conveying device (1) for conveying the N+1th wood veneer is provided on the front side of the dispensing mechanism (4), with the feeding direction from front to back; a first cutting device (2) for trimming the ends is provided on the first conveying device (1). The dispensing mechanism (4) is provided with a second conveying device (5) for conveying the Nth veneer; the second conveying device (5) is provided with a second cutting device (6) for aligning the ends and fixing the length. The front side of the dispensing mechanism (4) is provided with a cold pressing device (3) for pressing and splicing the N+1th veneer and the Nth veneer.

2. The high-efficiency dispensing toothed joint system according to claim 1, characterized in that, The dispensing mechanism (4) includes a glue tank (42), a dispensing claw (41), and a dispensing drive device for driving the dispensing claw (41) to move towards the glue tank (42). The dispensing claw (41) is located on the upper side of the glue tank (42).

3. The high-efficiency dispensing toothed joint system according to claim 1 or 2, characterized in that, The dispensing mechanism (4), the first conveying device (1), the first cutting device (2), the second conveying device (5), the second cutting device (6), and the cold pressing device (3) are all mounted on the same frame.

4. The high-efficiency dispensing toothed joint system according to claim 2, characterized in that, The dispensing drive device uses a cylinder.

5. The high-efficiency dispensing toothed joint system according to claim 2, characterized in that, The dispensing claw (41) is slidably connected to the frame.

6. The high-efficiency dispensing toothed joint system according to claim 1 or 2, characterized in that, An auxiliary heat dissipation device for accelerating cooling is provided on the outside of the cold pressing device (3).

7. The high-efficiency dispensing toothed joint system according to claim 6, characterized in that, The auxiliary heat dissipation device uses a fan.

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