JP4520894B2 - Clamping method and device for finger joint - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a finger joint pressing method and apparatus for joining wood, which has been processed into finger joints at a mouth, with finger joints.

  In order to obtain a long wood, as shown in FIGS. 8C and 8D, a finger joint B is processed at both ends of the wood element A in the longitudinal direction, and the wood element A is joined by the finger joint B. For the joining of the wood element A, a finger joint pressing device is used.

  As shown in FIG. 7, the conventional pressing device supports and conveys a wood element having a finger joint coated with an adhesive, and forwards and feeds the conveyor mechanism 1 forward of the conveyor mechanism 1. Formed by a feed roll 2 for temporarily press-fitting a finger joint of the wood element thus formed into a wood element row, and a finger composer 3 disposed in front of the feed roll 2 and performing the main compression of the wood element row. Yes.

  7 (a) and 7 (b), the wood element A is sequentially forwarded in series by the conveyor mechanism 1 in FIGS. 7 (a) and 7 (b), and the feed speed of the conveyor mechanism 1 is determined from the feed speed of the feed roll 2. The finger joint B of the front and rear wood elements A is continuously temporarily press-fitted while feeding the wood elements A in the conveyor mechanism 1 due to the speed difference, and the wood element rows in the temporary press-fit connection state are fingered. When the leading end of the preceding wood element A is brought into contact with the length determining stopper 4 by feeding into the composer 3, the conveyor mechanism 1 and the feed roll 2 are stopped, and the surplus portion of the wood element row connected in series by the dimension cutting saw 5 Disconnect.

  The wood element row thus cut to a predetermined size is laterally fed to the pressing position by the pusher 6, and the head portion of the cylinder 7 is brought into contact with the cut end of the wood element row by the action of the pressing cylinder 7. When the wood element row is pressurized in the row direction, the leading end of the preceding wood element abuts against the stopper 8 and the movement in the row direction stops.

  As a result, the wood element row is sandwiched between the stopper 8 and the head portion of the cylinder 7 and is subjected to main compression, so the finger joint B that has been temporarily press-fitted into the wood element row is bonded and integrated by the adhesive. Thus, a long wood having a predetermined length is obtained.

  Note that the buckling in the upper direction and the lateral direction of the wood element row at the time of pressing is prevented by pressing with the upper surface pressing and the side pressing.

  Further, as shown in FIGS. 8C and 8D, the length of the wood element A to be used is a combination of long and short objects and various lengths of wood elements. The number of timber elements A constituting the timber element row is less if a long timber element is used, and more if a short timber element is used.

  By the way, in the case of connecting the wood element A by pressing the finger joint B, if the main pressing is performed from the temporarily press-fitted state, the joint surface is compressed and the wood element row is contracted in the column direction.

  In the conventional finger joint pressing device, the length of the wood element row in the temporarily press-fitted state is detected by cutting the tip end against the stopper 4 and cut into a predetermined length. Like to do.

  However, since the wood elements A to be used are a combination of long, short and various lengths, the number of wood elements A constituting the wood element row having a predetermined length dimension is long wood elements. The number of wood elements A and the number of finger joints B constituting the wood element row of the set size is the length of the wood element A to be used. It will increase or decrease depending on the length of the number.

  Therefore, the wood element row is contracted in the row direction by a length proportional to the number of connections of the finger joints B at the time of the main compression, and the size of the contraction differs depending on the number of connections of the finger joints B. The wood element row has a problem that an error occurs in the length direction of the set dimension.

  Moreover, when the four surfaces of the upper surface, the lower surface, and both side surfaces of the wood element A to be used are machined, and the thickness and the width are uniform, the wood element A is continuously fed while being conveyed in the conveyor mechanism 1. Even if it is temporarily press-fitted, the occurrence of a misunderstanding that the joint portion of the finger joint B is joined with a half-pitch shift is unlikely to occur, but in the case of the wood element A in which the four surfaces are unprocessed and the thickness and width are not uniform, As shown in 8 (c) and (d), there is a problem in that it is easy to make a mistake in joining the finger joint B.

  Therefore, in order to solve the above-described problems, the object of the present invention is that there is no error in the length direction of the set dimension of the wood element row completed by cutting, and there is a mistake in joining the finger joints. It is an object of the present invention to provide a finger joint pressing method and apparatus that do not occur.

In order to solve the above-mentioned problems, the invention of the method is that the finger joints are processed at the front end and the rear end in the length direction, and the front end and the rear end of the wood element that is sent in the length direction toward the brake located at the front side. detecting the butt end, when there is no rear end of the timber element in the middle position location of the brake which presses stop wood element, feeding the wood element to the rear end of the timber element at the center position of the brake, the brake wood When the rear end of the wood element is in the middle position of the brake by depressing the element, the brake should be inserted so that the front finger joint of the rear wood element is inserted into the rear end finger joint of the front wood element. The rear end of the rear wood element is positioned at the center of the brake while temporarily press-fitting the finger joint between the rear end of the front wood element and the front end of the rear wood element. When the wood elements are temporarily press-fitted and sent forward by repeating the above operation, the length of the sent wood element row is measured and cut at a predetermined length. Detect the number of finger joint connections in the length, and add the length dimension obtained by multiplying the number of finger joint connections by the amount of contraction generated when the final tightening is performed from the temporary press-fitted state of the finger joint. A configuration for cutting is adopted.

  The number of finger joints is determined from the number of wood elements detected at the leading and trailing ends of the wood element, and the predetermined length setting condition of the length measuring means for measuring the length of the wood element row sent to the finger composer In addition to the number of finger joints connected, the length dimension is multiplied by the amount of contraction generated when the final tightening is performed from the temporary press-fitted state of the finger joint, and the feed roll of the wood element is controlled by this length measuring means. be able to.

  Further, the invention of the apparatus includes a tip of a wood element fed in the length direction in the middle of a transfer path for moving the wood element in which a finger joint is processed in the length direction at the front end and the rear end. It is equipped with a sensor that detects the mouth of the rear end, a feed roll that is positioned in front of this sensor and that feeds and stops the wood element that has been fed in, and a brake that presses and stops the wood element that has been fed in, sequentially A temporary press-fitting mechanism for temporarily press-fitting a finger joint of a wood element to be supplied; a length measuring means that is positioned in front of the feed roll and that measures a length of a wood element row fed toward the finger composer; and a finger composer A cutting mechanism for cutting the row of wood elements fed out to a required length is arranged, and the feed roll has a rear end of the wood elements at a central position of the brake. When the wood element is fed so that the rear end of the wood element is at the center of the brake, and the brake stops pressing the wood element, the rear wood Temporary press-fitting of the finger joint at the rear end of the front wood element and the front end of the rear wood element by feeding while applying the brake so that the front finger joint of the element is inserted into the rear end finger joint of the front wood element The length measuring means is formed so that the rear end of the rear wood element is sent to the center position of the brake and the wood element is temporarily press-fitted by repeating the above operation and sent to the front finger composer. And the feed roll and cutting mechanism measure the length of the wood element row fed to the finger composer and cut it at a predetermined length. Case, is obtained by adopting a configuration adapted to cut plus the length dimension obtained by multiplying the shrinkage allowance of the finger joint connections finger joints is within a predetermined length.

  The temporary press-fitting mechanism may include a reference ruler that guides one side surface of the wood element in the feeding direction, and a side pressure ruler that presses the one side surface of the wood element against the reference ruler.

  According to the present invention, after temporary press-fitting of the finger joint, when the length of the wood element row is measured and cut at a predetermined length, how many finger joints are connected in the predetermined length. Since the length of the detected number of finger joints multiplied by the contraction allowance of the finger joints is added and cut, the cutting length of the wood element row in the temporarily press-fitted state is set to a predetermined length. A shrinkage allowance is added according to the number of joints connected, and even if the finger joints shrink at the time of final compression, the finished wood element row will be accurately finished to the length of the set dimension, and there will be an error in the length direction. A wood element row without occurrence of this will be obtained.

  In addition, if the finger joint is temporarily press-fitted while pressing one side of the wood element against a reference ruler that guides it in the feed direction, the joint of the finger joint can be joined even in the case of a wood element in which the four sides are not processed and have a uniform thickness and width. In this case, it is possible to prevent the occurrence of mistakes.

  Hereinafter, embodiments of the present invention will be described based on illustrated examples.

  FIGS. 1A and 1B show the overall structure of the finger joint pressing device 11 in use, where finger joints are processed at both ends in the length direction, and an adhesive is applied to the finger joints. It is arranged in series in front of a feed mechanism 12 that supports the wood elements and feeds them in the length direction.

  As shown in FIGS. 1 and 2, the pressing device 11 horizontally moves a wood element A (see FIG. 8) in which finger joints B are processed at the front and rear ends in the length direction. In the middle of the transfer path 11a, the sensor 13 for detecting the front end and the rear end of the wood element A sent in the length direction, and the forward delivery of the wood element A fed in, located in front of the sensor 13 The first and second feed rolls 18 and 19 for stopping and the first and second brakes 20 and 21 for pressing and stopping the fed wood element A, and the finger joint B of the wood element A which is sequentially supplied. A temporary press-fitting mechanism 14 for temporarily press-fitting, a length measuring means 16 for measuring the length of the wood element row C which is located in front of the second feed roll 19 and is fed toward the finger composer 15, and a finger composer 5 is formed with a dimension cutting saw 17 which is a cutting mechanism for cutting the wood element row fed toward 5 to a required length, and these are provided in order along the moving direction of the wood element A. .

The sensor 13 is used phototube, lasers sensors, proximity switches or the like, is disposed on the side position of the transfer path, for detecting the butt end of the front end and the rear end of the timber element A to be fed toward the temporary press-fitting mechanism 14 It is like that.

  As shown in FIGS. 2 to 4, the temporary press-fitting mechanism 14 includes a first feed roll 18 for feeding the wood element A located on the transfer path 11 a forward and a front side of the first feed roll 18. A second feed roll 19 positioned at a predetermined interval, a first brake 20 disposed between the first feed roll 18 and the second feed roll 19, and a front side of the second feed roll 19. And a second brake 21 provided on the vehicle.

  The first feed roll 18 includes an upper roll 18a and a lower roll 18b that sandwich the wood element A on the transfer path from above and below, and the second feed roll 19 also has an upper roll 19a that sandwiches the wood element A on the transfer path from above and below. And the lower rolls 19b. The lower rolls 18b and 19b are rotatably supported on the frame 22, and are simultaneously driven by the same servo motor 22a. The upper rolls 18a and 19a are disposed on the upper part of the frame 22. It is attached to the elevating member 23 and is simultaneously driven by the same servo motor 24 provided on the elevating member 23.

  The upper rolls 18a and 19a are supported at the tip of a swing arm 25 attached to the lift member 23, respectively, and press the wood element A from above by a cylinder 26 provided between the lift member 23 and the swing arm 25. The upper and lower rolls 18a and 18b and 19a and 19b feed the wood element A forward without slipping.

  Moreover, the 1st brake 20 and the 2nd brake 21 are arrange | positioned at the raising / lowering member 23 via the cylinder 27, and are fixed to a stop position by pressing the stopped wood element A from the top. It has become.

  The length measuring means 16 employs an encoder method, and a length measuring wheel 29 is attached to the elevating member 23 via a cylinder 28 so as to be movable up and down, and is pressed onto a wood element A moving in the length direction. The moving length of the wood element A is detected by the rotation of the wheel 29.

  The first feed roll 18 and the second feed roll 19, the first brake 20 and the second brake 21, and the length measuring means 16 adjust the vertical position of the elevating member 23 to adjust the thickness of the wood element A. Can respond to changes in

  The temporary press-fitting mechanism 14 has a reference ruler fixedly arranged so that one side surface of the wood element A is guided in the feed direction at a position on one side across a transfer path for moving the wood element A in the length direction. 30 and a side pressure ruler 31a which is arranged at the other side position and presses one side surface of the wood element A toward the reference ruler 30, and the occurrence of a mistake in joining the finger joint B of the wood element A Can be prevented.

  As shown in FIG. 2, the reference ruler 30 is a straight line that is long in the moving direction of the wood element A, and has, for example, a length that reaches the position near the second brake 21 from the position of the supply mechanism 12. As shown in FIG. 5, the distance between the reference ruler 30 and the reference ruler 30 can be adjusted as shown in FIG. 5, and a movable ruler 31b that can swing around the pivot 32 on the side pressure ruler 31a and the movable ruler 31a. A pressing member 33 such as a cylinder provided between the side pressure ruler 31a and the movable ruler 31b is provided to swing the 31b.

  The side pressure ruler 31a has a length that reaches a position near the second brake 21 from a position near the sensor 13, and a long recess 34 in the length direction is provided in the middle of the pressing edge against the wood element A. ing.

  The movable ruler 31b has a rear end pivotally fixed to the upper surface of the rear end side of the side pressure ruler 31a by a pivot 32, and a protruding arm 35 projecting outward from the rear end of the movable ruler 31b is connected to the pressing member 33, so that a concave portion is formed. 34 is arranged so as to be able to swing in a planar manner, and the wood element A is pressed toward the reference ruler 30 toward the reference ruler 30 by the extension operation of the pressing member 33, and the movable ruler 31b is The wood element A is pressed toward the reference ruler 30 between the first feed roll 18 and the first brake 20.

  In addition, movable bases 45 and 46 that can move in the direction perpendicular to the moving direction of the wood element A are disposed near the both ends of the side pressure ruler 31a, and both the movable bases 45 and 46 are respectively connected to the feed screw shafts. 47, 48 are linked with sprockets 49, 50 using a chain 51, and are moved forward and backward in synchronization with the rotation operation of the handle 52 provided on one feed screw shaft 47, and fixed to the rear movable table 45. A position near the rear end of the side pressure ruler 31 a is pivoted at the tip of the plate 53 by a pivot 54, and the side pressure ruler 31 a can be rotated in a plane around the pivot 54, and provided on the tip movable table 46. The pressing member 55 such as a cylinder and the position of the tip of the side pressure ruler 31a are pivotally connected.

  Accordingly, the side pressure ruler 31a can be adjusted so that the distance from the reference ruler 30 matches the width of the wood element A by the rotation operation of the handle 52, and the wood element A is referenced on the tip side by the pressing member 55 such as a cylinder. The finger joint B can be pressed toward the ruler 30, and the finger joint B can be temporarily press-fitted so as not to be mistaken by pressing the front and rear wood elements A against the reference ruler 30 in cooperation with the movable ruler 31b.

  Here, the finger composer 15 that performs the main compression is a dimension that cuts an excess portion of the wood element row C connected in series to the front portion of the length measuring means 16 as shown in FIGS. 1, 2, and 6. A cutting saw 17 is provided, and a pressing position 36 is provided in parallel on one side of the transfer path, and a pusher 37 for laterally feeding the wood element row C to the pressing position 36 on the other side of the transfer path 15a. When the wood element row C is laterally fed to the clamping position 36 by the pusher 37, the head of the cylinder 38 is arranged at the cutting end. The wood element row C is pressed in the row direction, and if the leading edge of the preceding wood element A comes into contact with the stopper 39 and the movement in the row direction stops with the pressurization, the wood element row C is stopped by the stopper. 39 is clamped between the head of cylinder 38 and cylinder 38 Because, wood element sequence C is finger-jointed B that has been provisionally press-fitted facing surface is bonded and integrated by an adhesive, comprising an elongated timber having a predetermined length.

  Note that the buckling in the upper direction and the lateral direction of the wood element row at the time of pressing is prevented by applying pressure with the upper presser 44 and the side presser 42.

  The wood element row C at the compression position 36 that has been subjected to the main compression is moved to one side of the pressure position 36 by the lowering of the shutter plate 41 that restricts one side to be freely moved up and down by the cylinder 40 and the extrusion by the advancement of the side presser 42. Will be taken out.

  The finger joint pressing device according to the present invention is configured as described above. Next, a finger joint pressing method using this device will be described.

  When the finger joint B is processed at the front end and the rear end in the length direction, and the wood element A to which the adhesive is applied is fed to the finger joint B from the supply mechanism 12 toward the temporary press-fitting mechanism 14, the wood that passes therethrough The tip of the element A and the end of the rear end are detected by the sensor 13.

  In the temporary press-fitting mechanism 14, the first and second feed rolls 18 and 19 are rotated in the feed direction of the wood element A, and the fed wood element A is sandwiched from above and below to be sent forward. In FIG. 2, when there is no rear end of the wood element A at the center center position X of the first brake 20 that presses and stops the wood element A from above, the detection information of the tip and rear end of the wood by the sensor 13 is used. Based on this, the first and second feed rolls 18 and 19 are controlled so that the rear end of the wood element A is at the center position X of the first brake 20.

  Further, when the finger joint B at the rear end of the wood element A is at the center position X of the first brake 20, the second feed roll 19 is raised so that the feed does not act so that the first brake 20 and the first brake 20 2 With the first brake roll 18 in the state where the brake 21 is applied, the front finger joint B of the wood element A is moved to the finger joint B at the rear end of the wood element waiting at the central position X of the first brake 20. In this way, the finger joint B is temporarily press-fitted between the first brake 20 and the second brake 21 so that the rear end of the wood element row C comes to the center position X of the brake 20 after the temporary press-fitting. The wood element A is fed by controlling the first and second feed rolls 18, 19 and the first and second brakes 20, 21.

  At the time of the temporary press-fitting, the interval between the reference ruler 30 and the side pressure ruler 31a that are fixedly arranged is adjusted in advance to an interval that matches the maximum width of the wood element A to be used, and enters the first feed roll 18. The wood element A moves between the reference ruler 30 and the side pressure ruler 31a, and the wood element A that has reached the first feed roll 18 is moved to the reference ruler 30 by the side ruler 31a and the movable ruler 31b attached to the side pressure ruler 31a. Therefore, one side surface is guided in the feed direction with reference to the reference ruler 30.

  Therefore, the temporary press-fitting of the finger joint B performed in the first brake 20 portion is performed even when one side surface of the wood element A is aligned with the reference ruler 30 so that the wood elements A having different widths are mixed. As shown in 8 (a) and (b), occurrence of misunderstanding can be reliably prevented in the temporary press-fitting of the finger joint B.

  The wood elements A are connected by repeating the temporary press-fitting operation as described above, and the connected wood element rows C are sent to the rear finger composer 15, and the length of the sent wood element rows C is measured. 16 to measure.

  In this way, when the wood element row C is formed and the wood element row C is cut at a predetermined length, it is detected how many finger joints B are connected in the predetermined length. Cutting is performed by adding a length dimension obtained by multiplying the number of connections of the finger joint B by the amount of contraction generated when the tightening described below is performed from the temporarily press-fitted state of the finger joint B.

  That is, the number of connected finger joints B is determined from the number of the ends of the wood element A detected by the sensor 13 and the length of the wood element row C sent to the finger composer 15 is measured by the control means. The length obtained by multiplying the setting condition of the predetermined length of the length measuring means 16 by the amount of contraction generated when the number of finger joints B is connected from the temporarily press-fitted state of the connection part of one finger joint B to the final tightening. Add dimension requirements.

  The length of the shrinkage allowance generated when the final tightening is performed from the temporary press-fitted state of the finger joint B is determined by performing the final tightening a predetermined number of times from the temporary press-fitted state, measuring the shrinkage allowance each time, and obtaining an average value. Information on the length of the contraction allowance is input to the control means, and the control means multiplies the length obtained by multiplying the number of connections of the finger joint B by a predetermined length. An operation to be added to the setting condition is performed, and the first and second feed rolls 18 and 19 are stopped when the measurement length of the length measuring means 16 reaches a length dimension obtained by multiplying the predetermined length by the contraction allowance. It is like that.

  Actually, since the dimension cutting saw 17 is positioned in front of the length measuring means 16, the length of the distance from the center of the length measuring means 16 to the center of the dimension cutting saw 17 is inputted to the control mechanism. Therefore, the length of the wood element row C sent out toward the finger composer 15 is measured by the length measuring means 16, and the number of finger joints B connected to the predetermined length is determined by the finger joint B. When the length obtained by adding the length dimension multiplied by the shrinkage amount of B is reached and the wood element row C is stopped, the position of the wood element row C to be cut is located immediately above the dimension cutting saw 17. become.

  The length of the wood element row C sent out toward the finger composer 15 is a length dimension obtained by multiplying a predetermined length by the number of connections of the finger joint B and the contraction allowance of the finger joint B. Is stopped, the dimension cutting saw 17 is operated to cut and remove the surplus portion of the wood element row C.

  When the wood element row C is cut on the transfer path, the finger composer 15 pushes the wood element row C to the pressing position 36 by the pusher 37 disposed on one side of the transfer path 15a. By pressing the wood element row C from the cut end with the cylinder head portion of the pressing cylinder 38, the tip of the wood element row C comes into contact with the stopper 39, thereby pressurizing the wood element row C in the row direction. Since the row C is sandwiched between the stopper 39 and the cylinder 38 and the finger joint B is finally pressed, the wood element row C is bonded and integrated with the finger joint B, which has been temporarily press-fitted, with an adhesive. It becomes a long long wood.

  At this time, the buckling in the upper direction and the lateral direction of the wood element row at the time of pressing is prevented by pressing with the upper presser 44 and the side presser 42.

  As described above, after the temporary press-fitting of the finger joint B, when the length of the wood element row C is measured and cut at a predetermined length, what is the number of connection of the finger joint B within the predetermined length? Since it is cut by adding a length dimension obtained by multiplying the number of connections of the finger joint B by the shrinkage allowance of the finger joint B, the cutting length of the wood element row C in the temporarily press-fitted state is a predetermined length. In addition, a shrinkage allowance corresponding to the number of connections of the finger joints B is added, and even if the connection portions of the finger joints B are contracted at the time of the main compression, the finished wood element row C is accurately finished to the length of the set dimension. Thus, the wood element row C with no error in the length direction is obtained.

(A) is a top view of the whole structure which shows the use condition of the clamping device for finger joints, (b) is the same front view Enlarged front view of the clamping device Enlarged plan view of the clamping device Fig. 2 is an enlarged vertical side view of the pressing device viewed from the arrow IV-IV in Fig. 2. An enlarged plan view of a ruler provided in the clamping device Enlarged vertical side view of finger composer (A) is a top view of the whole structure which shows the conventional clamping device for finger joints, (b) is the same front view (A) is a plan view of the wood element rows connected using the finger joint pressing device of the present invention, (b) is a front view thereof, and (c) is connected using a conventional finger joint pressing device. Plan view of wood element row, (d) is the front view

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Finger joint pressing device 12 Supply mechanism 13 Sensor 14 Temporary press-fitting mechanism 15 Finger composer 16 Length measuring means 17 Saw for dimension cutting 18 First feed roll 19 Second feed roll 20 First brake 21 Second brake 22 Frame 22a Servo motor 23 Lifting member 24 Servo motor 25 Swing arm 26 Cylinder 27 Cylinder 28 Cylinder 29 Measuring wheel 30 Reference ruler 31a Side pressure ruler 31b Movable ruler 32 Axis 33 Press member 34 Recessed portion 35 Protruding arm 36 Clamping position 37 Pusher 38 Pressure cylinder 39 Stopper 40 Cylinder 41 Shutter plate 42 Side presser 43 Cylinder 44 Upper presser 45 Movable base 46 Movable base 47 Feed screw shaft 48 Feed screw shaft 49 Sprocket 50 Sprocket 51 Chain 52 Handle 53 Support plate 5 Axis 55 pressing member

Claims (4)

Finger joints are machined at the front end and rear end in the length direction, and the brake that detects the front end and the rear end of the wood element sent in the length direction toward the brake located at the front and presses and stops the wood element. when there is no rear end of the central position location wood elements, by the rear end of the timber element fed wood element to come to the center position of the brake, the brake is to press stop wood elements, in a central position of the brake When there is a rear end of the wood element, the front end of the front wood element and the rear end of the front wood element are moved by applying a brake so that the front finger joint of the rear wood element is inserted into the rear end finger joint of the front wood element. While temporarily press-fitting the finger joint at the tip of the rear wood element, the rear wood element is fed so that the rear end of the rear wood element is at the center of the brake, and the above operation is repeated. When the wood element is temporarily press-fitted in accordance with the above and sent forward, the length of the sent wood element row is measured and cut at a predetermined length, what is the connection of the finger joint within the predetermined length? For finger joints characterized by detecting whether there is a place and cutting the length by multiplying the number of connections of this finger joint by the amount of shrinkage that occurs when final tightening is performed from the temporary press-fitted state of the finger joint. Clamping method.   The number of finger joints connected is determined from the number of wood elements detected at the front and rear ends of the wood element, and a predetermined length setting for measuring the length of the wood element row sent to the finger composer is set. In addition to the conditions, a length dimension condition is added to the number of finger joint connections multiplied by the amount of contraction generated when the final tightening is performed from the temporary press-fitting state of the finger joint. The finger joint pressing method according to claim 1, wherein: Detects the leading and trailing ends of the wood elements sent in the length direction in the middle of the transfer path for moving the wood elements with finger joints processed in the length direction at the front and rear ends. A sensor, a feed roll that is positioned in front of the sensor, feeds and stops the wood element that has been fed forward, and a brake that presses and stops the wood element that has been fed in. A temporary press-fitting mechanism for temporarily press-fitting the joint; a length measuring means that is positioned in front of the feed roll and that measures the length of the wood element row fed toward the finger composer; and the wood element fed toward the finger composer Arrange the cutting mechanism to cut the row to the required length,
When the feed roller has no rear end of the wood element at the center position of the brake, the feed roll feeds the wood element so that the rear end of the wood element is at the center position of the brake, and the brake presses and stops the wood element, When the rear end of the wood element is in the middle of the brake, the front finger joint of the rear wood element is inserted into the rear end finger joint of the front wood element, and the front part is While temporarily press-fitting the finger joints at the rear end of the wood element and the front end of the rear wood element, the rear end of the rear wood element is fed so that it comes to the center of the brake, and the above operation is repeated to temporarily press-fit the wood element. Is formed to be sent out to the front finger composer,
When the length measuring means, the feed roll, and the cutting mechanism measure the length of the wood element row fed to the finger composer and cut it at a predetermined length, connection of finger joints within the predetermined length A pressure joint device for finger joints that is cut by adding the length dimension multiplied by the amount of shrinkage of the finger joints to the number.   The finger joint clamping according to claim 3, wherein the temporary press-fitting mechanism includes a reference ruler that guides one side surface of the wood element in the feeding direction, and a side pressure ruler that presses the one side surface of the wood element against the reference ruler. apparatus.

Images