A clamping device for wood processing

Abstract

The utility model provides a kind of clamping device for wood processing, belong to wood processing device technical field, including support, control unit, bottom surface conveying unit, cutting unit, and be set in the clamping conveying unit of bottom surface conveying unit both sides, located the front and rear of cutting unit, it further includes position detection unit, position detection unit is set on the support top surface between the discharge end of cutting unit and clamping conveying unit;Clamping conveying unit includes mounting bracket, drive motor and clamping roller, clamping roller is vertically set on support by mounting bracket, with drive motor transmission connection;The conveying line speed of clamping roller is same with the conveying line speed of bottom surface conveying unit;The outer surface of clamping roller is detachably fitted with rubber clamping cover, and the outer surface of rubber clamping cover is uniformly provided with a plurality of pressing protrusions along its circumferential direction.The utility model can effectively clamp raw material, and can avoid leaving marks on the surface of raw material, ensure the straightness of sawing.

Description

Technical Field

[0001] This utility model belongs to the technical field of wood processing equipment, and designs a clamping device, especially a clamping device for wood processing. Background Technology

[0002] When logs are sawn after being debarked, clamping rollers are often installed at the feed and discharge ends of the saw to hold the logs before and after cutting in order to ensure that the logs are fed in a straight line along their length. In the prior art, in order to achieve efficient transport of the logs, non-marking needles are often installed on the clamping rollers. These needles pierce the surface of the logs and rotate the clamping rollers to ensure the transport of the logs.

[0003] However, the use of traceless needles often leaves pinhole marks on the surface of the raw wood. When the wood is hard, the needles are also prone to breakage, leaving residue inside and affecting the wood quality. Furthermore, when traceless needles wear out or break, they need to be re-welded onto the surface of the clamping rollers. Since the broken needles are in various locations, re-welding them to the center of the clamping rollers can easily injure workers, making welding difficult. If the needles are not re-welded, too many breakages can lead to clamping failure. Existing alternatives to traceless needles involve using rubber sleeves on the clamping rollers. However, when wood is fed onto the rollers, it easily impacts the rubber sleeves, causing wear over time and affecting the clamping effect.

[0004] Therefore, it is necessary to provide a wood processing clamping device that can effectively clamp wood, is not easily worn, does not easily affect the surface quality of wood, and does not easily leave impurities in the wood. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping device for wood processing, so as to solve the technical problems in the prior art that it is easy to leave clamping marks on the surface of raw materials, and that the clamping rollers are prone to clamping failure and wear.

[0006] To achieve the above objectives, the specific technical solution of this utility model is as follows: A clamping device for wood processing includes a bracket, a control unit, a bottom conveying unit mounted on the bracket and electrically connected to the control unit, a cutting unit located in the middle of the loading end of the bottom conveying unit, and clamping conveying units located on both sides of the bottom conveying unit, in front of and behind the cutting unit. It also includes a position detection unit, which is mounted on the top surface of the bracket between the discharge end of the cutting unit and the clamping conveying unit. The clamping and conveying unit includes a mounting frame, a drive motor, and clamping rollers. The clamping rollers are vertically mounted on the support via the mounting frame and are connected to the drive motor. The conveying linear speed of the clamping rollers is the same as the conveying linear speed of the bottom conveying unit. The outer surface of the clamping roller is detachably fitted with a rubber clamping sleeve, and the outer surface of the rubber clamping sleeve is uniformly provided with a plurality of pressing protrusions along its circumference.

[0007] Multiple sets of clamping protrusions are evenly arranged along the axial direction of the rubber clamping sleeve; the clamping protrusions extend circumferentially along the rubber clamping sleeve, including a front section located in the feeding direction and a rear section located in the discharging direction. The front section is an arc-shaped protrusion eccentric to the rubber clamping sleeve and connects to the surface of the rubber clamping sleeve. The rear section is an arc-shaped protrusion concentric to the rubber clamping sleeve and connects to the front section. The end face of the rear section is perpendicular to the surface of the rubber clamping sleeve.

[0008] The outer surface of the clamping roller is uniformly provided with a plurality of limiting protrusions, and the inner side of the rubber clamping sleeve is uniformly provided with a plurality of limiting grooves corresponding to the limiting protrusions, and the limiting grooves and the limiting protrusions are tightly fitted together.

[0009] The position sensing unit includes a position sensor, which is a slotted photoelectric switch symmetrically arranged on both sides of the bottom conveying unit. The position sensor is mounted on the bracket via a mounting plate, and the sensing height of the position sensor is lower than the lowest top surface of the wood to be clamped at the lowest height.

[0010] The clamping and conveying unit also includes an electric push rod and a support frame. The support frame is fixed in an "L" shape on the top surface of the bracket, and the electric push rod is horizontally fixed on the vertical side of the support frame. The mounting frame is in an "n" shape, with the open end of the mounting frame pointing towards the bottom conveying unit. The top end of the electric push rod is fixed to the opposite side of the open end of the mounting frame, and the side of the clamping roller extends out of the open end of the mounting frame.

[0011] The clamping and conveying units are evenly arranged in multiple sets on the supports on both sides of the bottom conveying unit.

[0012] The bottom conveying unit is a conveyor belt conveying unit or a conveyor chain conveying unit.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a clamping device for wood processing. By setting a rubber clamping sleeve on the outer surface of the clamping roller and setting a pressing protrusion on the outer side of the rubber clamping sleeve, the front part of the pressing protrusion is used to clamp and guide the fed wood, and the rear part is used to limit and clamp the side of the wood. This can not only prevent the wood from impacting the front end of the pressing protrusion when it begins to feed into the clamping roller, thereby reducing the wear of the front part of the pressing protrusion, but also effectively clamp the wood through the rear part of the pressing protrusion, making it less prone to clamping failure. This effectively improves the clamping effect of the clamping roller and extends the service life of the rubber clamping sleeve. The technical solution provided by this utility model can effectively clamp and limit the sawn rough material, reduce the situation where the rough material is skewed in the later stage due to the skewness of the previous stage sawing, effectively clamp the rough material, avoid leaving marks on the surface of the rough material, and ensure the straightness of the sawing, making it suitable for widespread application in the processing of rough wood. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 for Figure 1 Sectional view along axis AA; Figure 3 This is a top view of the clamping roller in this utility model; Figure 4 for Figure 3 A magnified view of a portion of point B in the middle.

[0015] The markings in the diagram are as follows: 1. Bracket, 2. Bottom conveying unit, 3. Cutting unit, 4. Mounting frame, 5. Drive motor, 6. Clamping roller, 7. Rubber clamping sleeve, 8. Pressing protrusion, 81. Front section, 82. Rear section, 9. Limiting protrusion, 10. Position sensor, 11. Mounting plate, 12. Electric push rod, 13. Support frame, 14. Rotation direction. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0017] like Figures 1 to 4As shown, this utility model provides a clamping device for wood processing, including a support 1, a control unit, a bottom conveying unit 2 mounted on the support 1 and electrically connected to the control unit, a cutting unit 3 located in the middle of the feeding end of the bottom conveying unit 2, and clamping conveying units located on both sides of the bottom conveying unit 2, in front of and behind the cutting unit 3. These multiple units together constitute the main body of the existing clamping device for wood processing. Unlike the prior art, this embodiment also includes a position detection unit. The position detection unit is located on the top surface of the support 1 between the discharge end of the cutting unit 3 and the clamping conveying unit, and is used to detect whether material is being discharged from the cutting unit 3. When material discharge is detected from the cutting unit 3, the control unit controls the clamping conveying unit to start.

[0018] Specifically, the clamping and conveying unit in this embodiment includes a mounting frame 4, a drive motor 5, and a clamping roller 6. The clamping roller 6 is vertically mounted on the support 1 via the mounting frame 4 and is connected to the drive motor 5. It rotates under the drive of the drive motor 5 to clamp and convey the wood. To ensure that the wood slides relative to the bottom conveying unit 2, the conveying linear speed of the clamping roller 6 is set to be the same as the conveying linear speed of the bottom conveying unit 2.

[0019] In addition, in order to increase the friction of the surface of the clamping roller 6 and thus avoid relative sliding between the surface of the clamping roller 6 and the wood, in this embodiment, a rubber clamping sleeve 7 is detachably fitted on the outer surface of the clamping roller 6. The outer surface of the rubber clamping sleeve 7 is uniformly provided with a plurality of pressing protrusions 8 along its circumference, and the wood is clamped and conveyed by the pressing protrusions 8.

[0020] Furthermore, in this embodiment, multiple sets of pressing protrusions 8 are evenly arranged along the axial direction of the rubber clamping sleeve 7. For example... Figure 3 , Figure 4 As shown, the clamping protrusion 8 extends circumferentially along the rubber clamping sleeve 7, including a front section 81 in the feeding direction and a rear section 82 in the discharging direction, and the rotation direction 14 of the rubber clamping sleeve 7 is set as follows: Figure 3As shown in the diagram. The front section 81 of the pressing protrusion 8 is an arc-shaped protrusion eccentric to the rubber clamping sleeve 7 and connects to the surface of the rubber clamping sleeve 7. It is used to guide the wood between the two clamping rollers 6 arranged opposite each other on the support 1, to buffer the impact force generated on the pressing protrusion 8 by the end face of the wood during conveying, and to reduce the wear of the front section 81. The rear section 82 of the pressing protrusion 8 is an arc-shaped protrusion concentric to the rubber clamping sleeve 7 and connects to the front section 81. It is used to effectively clamp the wood guided between the two clamping rollers 6, ensuring the relative position and conveying direction of the wood on the bottom conveying unit 2. The end face of the rear section 82 is perpendicular to the surface of the rubber clamping sleeve 7. Since the wood is clamped by the rear end of the pressing protrusion 8 on the rubber clamping sleeve 7, in this embodiment, the conveying linear speed of the outer surface of the rear section 82 of the pressing protrusion 8 is the same as the conveying linear speed of the bottom conveying unit 2.

[0021] Furthermore, to prevent relative sliding between the rubber clamping sleeve 7 and the clamping roller 6, in this embodiment, a plurality of limiting protrusions 9 are uniformly provided on the outer surface of the clamping roller 6, and a plurality of limiting grooves corresponding to the limiting protrusions 9 are uniformly provided on the inner surface of the rubber clamping sleeve 7. The limiting grooves and the limiting protrusions 9 are tightly fitted together, so as to effectively limit the rubber clamping sleeve 7 by means of the tight fit between the limiting protrusions 9 and the limiting grooves.

[0022] Furthermore, the position sensing unit includes a position sensor 10 that is connected to the control unit for communication. In this embodiment, a through-beam position sensor 10 is selected. Preferably, the through-beam position sensor 10 is a slotted photoelectric switch symmetrically arranged on both sides of the bottom conveying unit 2.

[0023] In this embodiment, as Figure 2 As shown, the position sensor 10 is mounted on the bracket 1 via the mounting plate 11. In order to ensure that the position sensor 10 can accurately sense the wood, in this embodiment, the sensing height of the position sensor 10 is lower than the lowest top surface of the wood to be clamped at the lowest height.

[0024] Furthermore, to enable the clamping and conveying unit to adapt to wood of different widths, the clamping and conveying unit in this embodiment also includes an electric push rod 12 and a support frame 13. The support frame 13 is L-shaped and fixed to the top surface of the bracket 1, and the electric push rod 12 is horizontally fixed to the vertical side of the support frame 13. The mounting frame 4 is n-shaped, with its open end pointing towards the conveying channel above the bottom conveying unit 2. The extended end of the electric push rod 12 is fixed to the opposite side of the open end of the mounting frame 4, and the side of the clamping roller 6 extends out of the open end of the mounting frame 4. In use, it is only necessary to pre-control the electric push rod 12 to extend to the required length via the control unit before feeding and cutting the material into the cutting unit 3.

[0025] Furthermore, when the front end 81 or rear end 82 of the pressing protrusion 8 on the rubber clamping sleeve 7 wears out due to long-term use, the corresponding electric push rod 12 can be extended by a certain length to perform top extension clamping compensation, which can further extend the service life of the rubber clamping sleeve 7 and reduce the frequency of replacing the rubber clamping sleeve 7.

[0026] In addition, in order to provide sufficient guidance and clamping for the wood and prevent it from tilting during the conveying process due to premature release of the clamps, which would affect the straightness of the sawing of the unsawed wood, in this embodiment, multiple sets of clamping and conveying units are evenly arranged on the supports 1 on both sides of the bottom conveying unit 2. Preferably, two sets are arranged on the feeding side of the cutting unit 3 and five sets are arranged on the discharge side.

[0027] The bottom conveyor unit 2 can be a conveyor belt or a conveyor chain. Both bottom conveyor methods are existing mature technologies, and mature components can be purchased on the market. This embodiment does not impose specific limitations. Finally, in order to facilitate receiving signals from the position sensor 10 and controlling the start of the drive motor 5 according to the signals, as well as adjusting the position of the electric push rod 12 before cutting begins, and controlling the start and conveying speed adaptation of the cutting unit 3 and the bottom conveyor unit 2, the control unit in this embodiment includes a PLC controller.

[0028] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A clamping device for wood processing, comprising a support (1), a control unit, a bottom conveying unit (2) disposed on the support (1) and electrically connected to the control unit, a cutting unit (3) located at the middle of the loading end of the bottom conveying unit (2), and clamping conveying units disposed on both sides of the bottom conveying unit (2) and located in front of and behind the cutting unit (3), characterized in that: It also includes a position detection unit, which is disposed on the top surface of the bracket (1) between the discharge end of the cutting unit (3) and the clamping and conveying unit; The clamping and conveying unit includes a mounting frame (4), a drive motor (5), and a clamping roller (6). The clamping roller (6) is vertically mounted on the support (1) via the mounting frame (4) and is connected to the drive motor (5) for transmission. The conveying linear speed of the clamping roller (6) is the same as the conveying linear speed of the bottom conveying unit (2). The outer surface of the clamping roller (6) is detachably fitted with a rubber clamping sleeve (7), and the outer surface of the rubber clamping sleeve (7) is uniformly provided with a plurality of pressing protrusions (8) along its circumference.

2. The clamping device for wood processing according to claim 1, characterized in that: Multiple sets of the pressing protrusions (8) are evenly arranged along the axial direction of the rubber clamping sleeve (7); the pressing protrusions (8) extend circumferentially along the rubber clamping sleeve (7) and include a front section (81) located in the feeding direction and a rear section (82) located in the discharging direction. The front section (81) is an arc-shaped protrusion that is eccentric to the rubber clamping sleeve (7) and is connected to the surface of the rubber clamping sleeve (7). The rear section (82) is an arc-shaped protrusion that is concentric to the rubber clamping sleeve (7) and is connected to the front section (81). The end face of the rear section (82) is perpendicular to the surface of the rubber clamping sleeve (7).

3. The clamping device for wood processing according to claim 1, characterized in that: Multiple limiting protrusions (9) are uniformly arranged on the outer surface of the clamping roller (6), and multiple limiting grooves corresponding to the limiting protrusions (9) are uniformly arranged on the inner side of the rubber clamping sleeve (7). The limiting grooves and the limiting protrusions (9) are tightly fitted together.

4. The clamping device for wood processing according to claim 1, characterized in that: The position detection unit includes a position sensor (10), which is a slotted photoelectric switch symmetrically arranged on both sides of the bottom conveying unit (2); The position sensor (10) is mounted on the bracket (1) via the mounting plate (11), and the sensing height of the position sensor (10) is lower than the lowest top surface of the wood to be clamped at the lowest height.

5. A clamping device for wood processing according to claim 1, characterized in that: The clamping and conveying unit also includes an electric push rod (12) and a support frame (13). The support frame (13) is fixed in an "L" shape on the top surface of the bracket (1), and the electric push rod (12) is horizontally fixed on the vertical side of the support frame (13). The mounting frame (4) is in the shape of an "n". The open end of the mounting frame (4) points to the bottom conveying unit (2). The top end of the electric push rod (12) is fixed to the opposite side of the open end of the mounting frame (4). The side of the clamping roller (6) extends out of the open end of the mounting frame (4).

6. A clamping device for wood processing according to claim 1, characterized in that: The clamping and conveying units are evenly arranged in multiple sets on the two side supports (1) of the bottom conveying unit (2).

7. A clamping device for wood processing according to claim 1, characterized in that: The bottom conveying unit (2) is a conveyor belt conveying unit or a conveyor chain conveying unit.

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