Combined finger joint knife

Abstract

The utility model discloses a combined finger joint knife, including cutterhead, finger joint knife, detection device and radiating fin, the cutterhead is equipped with the mounting bracket that is used for fixing finger joint knife and detection device, the finger joint knife is equipped with the rectangular notch that is used for installing radiating fin, the detection device includes shell, pressure sensor, first baffle plate, second baffle plate, spring, pressure sensor, first baffle plate, second baffle plate, spring. The combined finger joint knife is used for detecting the loosening condition of the finger joint knife, is reasonable in design, saves materials, is good in performance, improves the application level of the finger joint knife, and is easy to popularize and use.

Description

Technical Field

[0001] The utility model belongs to the technical field of woodworking tools and relates to a combined finger-jointed knife. Background Art

[0002] Finger-jointing technology refers to using finger-jointing tools to process serrated interfaces at the ends of two adjacent pieces of wood, so that the two ends are cross-jointed and connected.

[0003] Finger-jointing knives currently fall into two categories: split-type and integrated. Split-type finger-jointing knives consist of multiple, stacked blades, each with its blades staggered. Integrated finger-jointing knives combine several to a dozen split-type blades into a single unit. This allows a single integrated finger-jointing knife to complete the job, even when the lumber ends are narrow. Even when the lumber ends are wider, stacking two or three of these integrated knives is sufficient.

[0004] In the prior art, the finger-jointed knife is fixed on the cutter disc, and the cutter disc is rotated to drive the finger-jointed knife to rotate, thereby cutting the wood and processing a serrated joint, so that the two ends are cross-jointed and connected. However, the fixing and disassembly methods during use are complicated, resulting in low efficiency in replacing the finger-jointed knife. Moreover, since most existing finger-jointed knives are embedded in the cutter disc, the friction between the finger-jointed knife and the cutting piece during use easily generates a lot of heat on the surface of the finger-jointed knife. The heat is difficult to dissipate in time, causing the finger-jointed knife to expand due to heat, aggravating the friction between the finger-jointed knife and the cutting piece, resulting in deviations in the cutting size of the cutting piece due to friction. Moreover, during use, the connection between the finger-jointed knife and the cutter disc is prone to loosening, causing the finger-jointed knife to shake during the cutting process, which is difficult for the staff to detect in time, and the finger-jointed knife is prone to damage the cutting piece during the cutting process.

[0005] Therefore, the existing technology still needs to be improved and developed. Summary of the Invention

[0006] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a combined finger-jointed knife, which aims to solve the problems of the complicated fixing and disassembly methods of the finger-jointed knife in the prior art, resulting in low efficiency in replacing the finger-jointed knife; heat is difficult to dissipate in time, causing the finger-jointed knife to expand due to heat, aggravating the friction between the finger-jointed knife and the cutting piece, resulting in deviation in the cutting size of the cutting piece due to friction; the connection between the finger-jointed knife and the cutter disc becomes loose, causing the finger-jointed knife to shake during the cutting process, which is difficult for the staff to discover in time, making it easy for the finger-jointed knife to damage the cutting piece during the cutting process, and other problems.

[0007] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0008] The combined finger-jointed knife comprises a cutter disc, a finger-jointed knife, a detection device and a heat sink. A keyway is provided on the inner hole of the cutter disc, and the keyway is used to install a drive shaft. A mounting bracket is provided on the outer surface of the cutter disc, and a first connecting hole and a second connecting hole are provided on the mounting bracket. The first connecting hole is used to install a bolt to fix the finger-jointed knife to the cutter disc; the second connecting hole is used to install a bolt to fix the detection device to the cutter disc.

[0009] Furthermore, a third connection hole and a rectangular notch are provided on the finger-jointed knife. The third connection hole is used for installing a bolt to fix the finger-jointed knife to the knife disc, and the rectangular notch is used for installing a heat sink.

[0010] Furthermore, the detection device includes a housing, a pressure sensor, a first baffle, a second baffle, and a spring. A first boss is provided on the first baffle, a second boss and a third boss are provided on the second baffle, and the spring is installed between the first boss on the first baffle and the second boss on the second baffle. The third boss is pressed on the surface of the finger joint knife.

[0011] The beneficial effects are as follows: a combined finger-jointed knife of the utility model is composed of a cutter disc, a finger-jointed knife, a detection device and a heat sink; the finger-jointed knife is fixed to the cutter disc by installing bolts through the first connecting hole and the third connecting hole. The fixing method and the disassembly method are simple, and the working efficiency of replacing the finger-jointed knife is high. When the finger-jointed knife is damaged and needs to be replaced, the staff only needs to remove the bolts in the first connecting hole and the third connecting hole to separate the finger-jointed knife from the cutter disc, and then replace the finger-jointed knife with a new one. The operation is relatively simple and fast, and there is no need to remove and reinstall each finger-jointed knife, which saves time and improves efficiency, and the cutter disc can be used multiple times to save costs; through the arrangement of the rectangular notch and the heat sink, the heat sink can accelerate the dissipation rate of the heat generated by the friction of the finger-jointed knife when the finger-jointed knife is in use, so that the expansion of the finger-jointed knife caused by the influence of heat is smaller, and the finger-jointed knife is prevented from being damaged. The friction caused by the expansion of the finger joint knife is aggravated, which causes deviation in the size of the cutting piece. The heat sink can be used multiple times to save costs. The setting of the rectangular notch saves expensive finger joint knife materials and saves costs. Through the setting of the shell, pressure sensor, first baffle, second baffle and spring, when the finger joint knife is in use, if the finger joint knife becomes loose, the finger joint knife squeezes the second baffle through the third boss, the second baffle is displaced, and then squeezes the spring, causing the force of the spring acting on the first baffle to increase. When the pressure sensor detects that the pressure change on the first baffle exceeds the set value, it transmits a signal to the controller to inform the staff, so that timely adjustment is made, and the finger joint knife is prevented from damaging the cutting piece during the cutting process. The combined finger joint knife has a reasonable design, saves materials, and has good performance, which improves the application level of the finger joint knife and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1It is a schematic diagram of the overall structure of a preferred embodiment of a combined finger-jointed knife described in the utility model.

[0013] Figure 2 It is a structural schematic diagram of a detection device of a preferred embodiment of a combined finger-jointed knife described in the utility model. DETAILED DESCRIPTION

[0014] The present invention provides a preferred embodiment of a combined finger-jointed knife. To make the purpose, technical solution, and effects of the present invention clearer and more specific, the present invention is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] Please also see Figure 1 、 Figure 2 ,in, Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a combined finger-jointed knife according to the present utility model; Figure 2 It is a structural schematic diagram of a detection device of a preferred embodiment of a combined finger-jointed knife described in the utility model.

[0016] The utility model provides a combined finger-jointed knife, comprising a cutter disc 1, a finger-jointed knife 2, a detection device 3 and a heat sink 4. A keyway 111 is provided on the inner hole 11 of the cutter disc 1, and the keyway 111 is used to install a drive shaft. A mounting bracket 121 is provided on the outer surface 12 of the cutter disc 1, and a first connecting hole 1211 and a second connecting hole 1212 are provided on the mounting bracket 121. The first connecting hole 1211 is used to install a bolt to fix the finger-jointed knife 2 to the cutter disc 1; the second connecting hole 1212 is used to install a bolt to fix the detection device 3 to the cutter disc 1, and a third connecting hole 1211 is provided on the finger-jointed knife 2. The third connection hole 21 and the rectangular notch 22 are used to install the bolts to fix the finger-jointed knife 2 to the cutter head 1. The rectangular notch 22 is used to install the heat sink 4. The detection device 3 includes a housing 31, a pressure sensor 32, a first baffle 33, a second baffle 34, and a spring 35. The first baffle 33 is provided with a first boss 331, and the second baffle 34 is provided with a second boss 341 and a third boss 342. The spring 35 is installed between the first boss 331 on the first baffle 33 and the second boss 341 on the second baffle 34. The third boss 342 is pressed on the surface of the finger-jointed knife 2.

[0017] The working process of this utility model:

[0018] During use, the cutter disc 1 is installed on the drive shaft through the keyway 111, and a bolt is used to pass through the first connecting hole 1211 of the mounting bracket 121 on the outer surface 12 of the cutter disc 1 and the third connecting hole 21 on the finger-jointed knife 2 to fix the finger-jointed knife 2 on the mounting bracket 121 on the outer surface 12 of the cutter disc 1. The cutter disc is rotated to drive the finger-jointed knife to rotate, thereby cutting the wood and processing a serrated interface. When the finger-jointed knife is damaged and needs to be replaced, the staff only needs to remove the bolts in the first connecting hole and the third connecting hole to separate the finger-jointed knife from the cutter disc, and then replace it with a new finger-jointed knife. The operation is relatively simple and quick, and there is no need to remove and reinstall each finger-jointed knife, which saves time and improves efficiency. The cutter disc can be used multiple times, saving costs.

[0019] The heat sink 4 is inserted into the rectangular notch 22 on the finger-joining knife 2. When the finger-joining knife is in use, the heat sink can accelerate the dissipation rate of the heat generated by the friction of the finger-joining knife, so that the expansion of the finger-joining knife caused by the heat is reduced, and the friction caused by the expansion of the finger-joining knife is prevented from being aggravated, which may cause deviation in the size of the cut piece. The heat sink can be used multiple times, saving costs. The provision of the rectangular notch saves expensive finger-joining knife materials, saving costs.

[0020] Use bolts to pass through the second connecting holes 1212 of the mounting bracket 121 on the outer surface 12 of the cutter disc 1 to fix the detection device 3 on the mounting bracket 121 on the outer surface 12 of the cutter disc 1, and adjust the tightening degree of the bolts so that the third boss 342 of the second baffle 34 of the detection device 3 presses on the surface of the finger-jointed knife 2. When the finger-jointed knife 2 is in use, if the finger-jointed knife 2 becomes loose, the finger-jointed knife 2 squeezes the second baffle 34 through the third boss 342, and the second baffle 34 is displaced, thereby squeezing the spring 35, resulting in an increase in the force of the spring 35 acting on the first baffle 33. When the pressure sensor 32 detects that the pressure change on the first baffle 33 exceeds the set value, it transmits a signal to the controller to send a signal to inform the staff, so as to facilitate timely adjustment and prevent the finger-jointed knife 2 from damaging the cutting workpiece during the cutting process.

[0021] In summary, the combined finger-jointed knife described in the present invention includes a cutter disc, a finger-jointed knife, a detection device and a heat sink. The cutter disc is provided with a mounting bracket for fixing the finger-jointed knife and the detection device. The finger-jointed knife is provided with a rectangular notch for installing a heat sink. The detection device includes a housing, a pressure sensor, a first baffle, a second baffle, and a spring for detecting the looseness of the finger-jointed knife. The combined finger-jointed knife has a reasonable design, saves materials, and has good performance, thereby improving the application level of the finger-jointed knife and being easy to promote and use.

[0022] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, they can make improvements or changes based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A combined finger-jointed knife, comprising a knife disc, a finger-jointed knife, a detection device and a heat sink, characterized in that: A keyway is provided on the inner hole of the cutter disc, and the keyway is used to install the drive shaft. A mounting bracket is provided on the outer surface of the cutter disc, and a first connecting hole and a second connecting hole are provided on the mounting bracket. The first connecting hole is used to install a bolt to fix the finger-jointed knife to the cutter disc; the second connecting hole is used to install a bolt to fix the detection device to the cutter disc, and a third connecting hole and a rectangular notch are provided on the finger-jointed knife. The third connecting hole is used to install a bolt to fix the finger-jointed knife to the cutter disc, and the rectangular notch is used to install a heat sink. The detection device includes a shell, a pressure sensor, a first baffle, a second baffle, and a spring. A first boss is provided on the first baffle, and a second boss and a third boss are provided on the second baffle. The spring is installed between the first boss on the first baffle and the second boss on the second baffle, and the third boss is pressed on the surface of the finger-jointed knife.

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