Workpiece temporary holding device for panel saw and panel saw equipped with same

Abstract

To provide a novel temporary holding device of a workpiece and a panel saw provided therewith preventing the workpiece temporarily placed in an erected state on a work table from falling down when sawing the workpiece such as a thin plate and the like vertically using the panel saw.SOLUTION: A workpiece temporary holding device 10 is provided on a constitutional member of a rotary ruler 11 which is selected to be in a retreat state where it is positioned in a rear side further from a support surface 3S of a work table 3 or in a projected state where it projects into a front side further from the support surface 3S. Further, the workpiece temporary holding device 10 is provided with a holing motion part 21 provided with a press-holding piece 20 projecting in an installation direction of a circular saw table unit 5, wherein when sawing the workpiece W, it limits a sawing width size of the workpiece W by abutting a not-sawing side end edge of the workpiece W with a ruler lever 15 of the rotary ruler 11 set in the projected state, and positions the holding motion part 21 at a front side of the workpiece W to prevent the workpiece W held in an erected state on the work table 3 from falling to the front side.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a panel saw used for cutting wood boards, resin boards, etc., and more particularly to a temporary holding device for a workpiece to be cut and a panel saw equipped with the same. [Background technology]

[0002] Panel saws are widely used as equipment for cutting workpieces such as wood boards, resin boards, and inorganic boards for heat insulation in a nearly vertical position. This equipment has a horizontal ruler placed horizontally in the width direction below the front of the frame, and the workpiece is placed on this horizontal ruler and leaned against a work table with the upper part tilted slightly backward, and the workpiece is cut at a specified position by a circular saw blade that moves up and down. However, in woodworking machines that perform cutting operations using such blades, there is a strong demand for safety during operation. As a measure to ensure safety in panel saws, a design is adopted in which both hands are required to operate the switch panel to start the saw, thereby avoiding dangers caused by hands coming into contact with moving parts such as blades or their path of movement.

[0003] While this type of configuration ensures safety during work, it has been pointed out that depending on the type of work, it can reduce workability when setting it up. In particular, when a thin plywood board or a lightweight resin board is temporarily placed leaning against the work table (standing up), the work becomes somewhat unstable, and the work may fall over toward the front (the side in front of the worker). In such cases, when start-up operations with one hand were previously permitted, the worker would operate the start button or the like with one hand while temporarily holding the workpiece with the other hand to prevent the workpiece from falling over.

[0004] However, as mentioned above, it is now mandatory to always use both hands when starting a panel saw, so the worker can no longer directly hold the workpiece with his or her hands as in the past. Of course, the workpiece does not fall over frequently, but it cannot be denied that it is troublesome to work when it does. However, this troublesomeness is only felt by users who handle thin plates, and even thin plates do not always fall over, so as a result, no proactive measures have been taken to prevent thin plate workpieces from falling over. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 6-46906 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made taking into consideration the above-mentioned background, and has as its technical objective the development of a new temporary work holding device for a panel saw, which can prevent a workpiece temporarily placed on an upright work table from falling over when cutting a workpiece such as thin plate material vertically with a panel saw, and a panel saw equipped with this. [Means for solving the problem]

[0007] First, the panel saw work temporary holding device according to claim 1 is A panel saw is installed that cuts a workpiece supported on a work table vertically using a vertically moving circular saw unit, and temporarily holds the workpiece prior to cutting. Temporary workpiece holding for panel saws An apparatus comprising: The panel saw is provided with a rotary ruler for regulating the width dimension when cutting a workpiece, and the rotary ruler is provided with a ruler rod configured to be rotatable from an upward direction to a forward direction, and configured so that the angle of the ruler rod can be set between the upward retracted state in which the ruler rod is positioned rearward of a support surface of the work table, and the forward protruding state in which the ruler rod protrudes forward from the support surface, Also, Temporary workpiece holding for panel saws The device is installed close to the work table, The above It is provided on a component of the rotary ruler, Also, temporary holding of the work for the panel saw The device is provided with a holding section having a pressing piece extending toward the installation side of the circular saw unit, When cutting the workpiece, set the protruding state. The above The cutting width dimension of the workpiece is regulated by abutting the edge portion of the workpiece on the non-cutting side against the ruler rod; In addition Furthermore, the holding portion including the pressing piece is positioned on the front side of the workpiece, thereby preventing the workpiece supported by a work table from falling over toward the front side.

[0008] The panel saw workpiece temporary holding device according to claim 2 has, in addition to the requirements of claim 1, The holding portion is characterized in that it is configured by attaching a pressing piece to the rotating tip of the ruler rod of the rotating ruler.

[0009] The panel saw workpiece temporary holding device according to claim 3 has, in addition to the requirements of claim 2, The pressing piece is formed as a separate member from the ruler rod, and this separate member is configured so as to be freely fitted and assembled to the ruler rod.

[0010] The circular saw unit according to claim 4 has, in addition to the features of claim 3, The pressing piece is formed in a cylindrical block shape and has a fitting recess in one part for fitting around the rotating tip of the ruler rod to allow for free fitting and assembly, and the fitting recess has a snap action portion for maintaining the fitted and assembled state.

[0011] The panel saw according to claim 5 further comprises: A panel saw that cuts a workpiece supported on a work table vertically using a vertically movable circular saw unit, This panel saw is characterized in that it comprises the work temporary holding device for a panel saw according to any one of claims 1 to 4. The above problems are solved by the configurations of the inventions described in each of these claims. Effect of the Invention

[0012] First, according to the invention described in claim 1 or 5, even if the workpiece to be cut with the panel saw is a lightweight thin plate that is prone to falling forward after being placed on the work table, this falling can be prevented. In addition, since the workpiece temporary holding device utilizes the components of an existing rotary ruler (contact ruler), it can be retrofitted to an existing panel saw, which reduces the introduction cost of the workpiece temporary holding device.

[0013] According to the invention as set forth in claim 2 or 5, the workpiece temporary holding device utilizes the ruler rod of an existing rotary ruler (contact ruler), making the structure of the workpiece temporary holding device more specific.

[0014] Furthermore, according to the invention described in claim 3 or 5, the clamping piece which substantially prevents the workpiece from falling forward is constructed separately from the ruler rod and is fitted into the ruler rod. Moreover, since the clamping piece can be attached and detached freely, the workpiece temporary holding device can be constructed even more simply and is extremely easy to install even for users who are using existing panel saws.

[0015] Furthermore, according to the invention described in claim 4 or 5, the pressing piece is formed in a cylindrical block shape, and the mating recess is provided with a snap action portion that maintains the fitted and assembled state, making the configuration of the work temporary holding device even more specific. [Brief description of the drawings]

[0016] [Figure 1] 1 is a perspective view showing a panel saw equipped with a workpiece temporary holding device for a panel saw according to the present invention; [Diagram 2] FIG. 1 is a front view (a) and a side view (b) of the same. [Diagram 3]1A is a front view, a plan view, a left side view, and a right side view showing a work temporary holding device for a panel saw, as well as an explanatory diagram (e) showing a pressing piece that constitutes the holding action part. [Figure 4] 11 is a perspective view showing two types of pressing pieces that constitute the holding portion. FIG. [Diagram 5] 13A and 13B are three-view and a perspective view showing still another configuration example of the pressing piece. [Figure 6] 13 is a perspective view showing an example of the configuration of a holding section in which a rod-shaped sliding rod is provided on the guide section of a ruler rod and a flat pressing piece is attached to the tip of the rod. FIG. [Figure 7] 13 is a perspective view showing an example of the configuration of a holding action portion formed using a slide base instead of a ruler rod. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] The present invention is as shown in the following examples, but these examples can be modified as appropriate within the scope of the technical concept of the present invention. EXAMPLES

[0018] The present invention will now be described in detail with reference to the illustrated embodiments. The present invention relates to a work temporary holding device 10 for a panel saw (hereinafter simply referred to as the work temporary holding device 10), and a panel saw 1 equipped with the same. Prior to describing the workpiece temporary holding device 10, a schematic configuration of the panel saw 1 will first be described. The panel saw 1 itself has a basic structure that is already in widespread use. To summarize its structure, as an example, as shown in Figures 1 to 3, a work table 3 is arranged vertically on a frame 2, and a horizontal ruler 4 is arranged horizontally below the table across almost the entire width of the panel saw 1.

[0019] The work table 3 is divided in the vertical direction within the preparation side 3A (divided into three places in this embodiment), and the rotary ruler rail 8 is provided so as to be exposed at each portion. A rotary ruler 11 is slidably provided on the rotary ruler rail 8, and the rotary ruler 11 acts to regulate the width dimension when cutting the work W. That is, as shown in FIG. 3 as an example, the rotary ruler 11 has a ruler rod 15 configured to be rotatable approximately 90 degrees from upward to front, and the ruler rod 15 is configured to be able to set the angle between a retracted state (the above-mentioned upward position) in which the ruler rod 15 is located rearward of the support surface 3S of the work table 3, and a protruding state (the above-mentioned front position) in which the ruler rod 15 protrudes forward from the support surface 3S. In other words, when cutting the workpiece W, the cutting width dimension of the workpiece W is regulated by abutting the edge portion of the workpiece W on the non-cutting side against the ruler rod 15 set in the above-mentioned protruding state, as shown in the partial view of Figure 1 as an example. Because of this configuration, the rotating ruler 11 is sometimes also called a contact ruler.

[0020] The horizontal ruler 4 itself essentially functions as a platform that supports the lower end of the workpiece W. A circular saw unit 5 is provided as a member that contributes to the actual cutting of the workpiece W, and this circular saw unit 5 cuts the workpiece W vertically (up and down) by lowering a circular saw blade 5A provided thereon while rotating (see FIG. 2). Of course, once one vertical cut is completed, the circular saw unit 5 rises and returns to its initial position. At the position where the circular saw blade 5A passes, a clamp device 6 for holding the workpiece W is provided so as to be able to move toward and away from the work table 3. This clamp device 6 is formed with a groove through which the circular saw blade 5A passes, and is configured so that the circular saw blade 5A is not exposed to the front side (the side facing the operator). Furthermore, an operation panel 7 is provided on the front side of the clamp device 6. The actual cutting operation is configured so that cutting into the workpiece W is performed by operating buttons and switches provided on this operation panel 7. Note that the operation buttons and the like are provided in two separate locations so that start-up operations on this operation panel 7 always require two-handed operation.

[0021] Next, a workpiece temporary holding device 10 provided for such a panel saw 1 will be described below. The workpiece temporary holding device 10 is configured by utilizing a conventional rotating ruler 11 that is installed in the vicinity of the worktable 3. The rotating ruler 11 is equipped with a slide base 12 that can move horizontally using the above-mentioned rotating ruler rail 8 as a guide, and is configured so that it can be fixed at an appropriate position in the width direction relative to the channel-shaped rotating ruler rail 8, for example. Specifically, the slide base 12 is provided with, for example, a lock handle 13 on the upper part, and by rotating the lock handle 13, for example by rotating it toward the front side, the lock piece 13A shown in Fig. 3(c) firmly holds the flange portion of the rotating ruler rail 8, thereby fixing the slide base 12 (preventing movement). The slide base 12 also has a display plate 12A made of transparent resin, for example, at its front, and at approximately the center thereof has a mark line 14 indicating the fixing position of the rotary ruler 11. This mark line 14 is set to match with a scale 82 provided on the rotary ruler rail 8, and the cutting width dimension of the workpiece W is indicated by the graduation of the scale 82 pointed to by the mark line 14.

[0022] A ruler rod 15 is rotatably attached to the slide base 12. As shown in Fig. 1 and Fig. 3(b) as an example, the ruler rod 15 is used to set the cutting width dimension (cutting dimension) of the work W by abutting the work W against its side, and the rotary ruler 11 in this embodiment is configured to form a gate shape as a whole when viewed from the front in the retracted state (upward posture) with an auxiliary rod 16 of almost the same structure as the ruler rod 15 opposed thereto, with an operation grip 17 between them. The ruler rod 15, auxiliary rod 16, and operation grip 17 of the rotary ruler 11 are rotatably attached to the slide base 12 at the rotation shaft 18, and further, as shown in Fig. 3(b) as an example, a torque setting bolt 19 is provided from the slide base 12, which can be tightened in a pressure-contact state against the rotation shaft 18.

[0023] A workpiece temporary holding device 10 is constructed using such a conventional rotary ruler 11, and this workpiece temporary holding device 10 will be described below. The workpiece temporary holding device 10 has a pressing piece 20 provided in a holding action portion 21. As a first embodiment, as shown in Figs. 3(a) to 3(e), a separate pressing piece 20 is fitted around the free rotatable end (around the tip) of the ruler rod 15 of the rotating ruler 11, i.e., into the free rotatable tip of the ruler rod 15 and a part of the operating grip portion 17 connected thereto, so as to be detachable, thereby realizing a temporary holding action.

[0024] Therefore, in the first embodiment, the holding action part 21 is composed of the tip of the ruler rod 15 and a part of the surrounding material. Here, the pressing piece 20 is formed of a resin material as an example, and is in the shape of a short cylindrical block as a whole, and a fitting recess 22 is formed in a part of it. This fitting recess 22 is formed by continuously recessing the ruler rod fitting part 22a and the operation grip fitting part 22b, and the operation grip fitting part 22b is formed as a snap action part 24 whose fitting opening dimension is slightly shorter than the diameter of the operation grip part 17, for example, and is configured so that the pressing piece 20 can be maintained fitted into the operation grip part 17. Also, as shown in Figures 3(b)-(e) and 4(a), for example, when the pressing piece 20 is viewed from the axial direction, the portion where the fitting recess 22 is not provided is made into the pressing action portion 25. With the rotating ruler 11 in the protruding state (front facing position), the ruler rod 15, i.e., the pressing piece 20, is positioned on the front side of the workpiece W to be cut, thereby pressing down the non-cutting side edge of the workpiece W and preventing it from falling forward.

[0025] The present invention has the basic configuration as described above, and operates as follows to temporarily hold the workpiece W. First, as shown in Fig. 1, the rotary ruler 11 itself is provided across multiple stages (three stages as an example) on the preparation side 3A of the work table 3, with one or multiple units provided on the rotary ruler rail 8. Here, for the rotary ruler 11 that is not used for the intended cutting work (unnecessary rotary ruler 11), the ruler rod 15 is rotated and removed rearward from the support surface 3S of the work table 3 (the above-mentioned upward position).

[0026] On the other hand, the rotating ruler 11 to be used for the intended cutting work is laid down so that its ruler rod 15 projects forward from the work table 3 (front-facing position in the projecting state). At this time, if the work W is a particularly lightweight thin plate material that is likely to tip over to the front side, the pressing piece 20 is attached to the free rotating end of the ruler rod 15 to prevent the work W from tipping over. That is, by tightly fitting the fitting recess 22 of the pressing piece 20 around the free rotating end of the ruler rod 15, the ruler rod fitting portion 22a is attached so as to cover the free end of the ruler rod 15, and the operation grip fitting portion 22b is also fitted in so as to embrace the operation grip 17.

[0027] At this time, the pressing piece 20 is firmly held around the free end of the ruler rod 15 by the snap action portion 24 formed in an inwardly bulging shape so as to have an opening dimension somewhat smaller than that of the operating grip portion 17. By attaching the pressing piece 20 to the ruler rod 15 in this manner, the pressing action portion 25, which is the portion of the pressing piece 20 opposite the fitting recess 22, is in a state of projecting toward the circular saw unit 5 (see Figs. 1 and 3(e)). And, by the pressing action portion 25 projecting somewhat toward the installation side of the circular saw unit 5, even if the work W separates from the work table 3 and tries to fall toward the front side, the non-cutting side edge of the work W is caught by the above-mentioned projecting pressing action portion 25, i.e., the pressing piece 20, and the work W is prevented from falling.

[0028] In addition, since the thickness of the workpiece W is not always the same, it is possible to deal with this by adjusting the rotation angle (tilt angle) of the ruler rod 15 toward the front side. Specifically, as shown in the enlarged view of FIG. 2(b), for example, the non-cut edge side of the workpiece W is placed against the side of the ruler rod 15 to determine the cutting width dimension, and then the rotation angle (tilt angle) of the ruler rod 15 is adjusted to bring the pressing piece 20 into close contact with the surface of the workpiece W (naturally, the lock handle 13 is operated in this state to lock the ruler rod 15), thereby preventing the workpiece W from falling toward the front side even when the thickness dimensions of the workpiece W are different. Here, FIG. 2(b) above illustrates a state in which the pressing piece 20 is made to come into close contact with the surface of the workpiece W by changing the tilt angle of the ruler rod 15 when the plate thickness dimensions of the workpiece W are different, specifically, between 10 mm and 45 mm. Incidentally, in the first embodiment, the holding action portion 21 forming the workpiece temporary holding device 10 substantially utilizes the ruler rod 15 of the rotary ruler 11. However, the holding action portion 21 itself can be configured separately without using the ruler rod 15, as shown in Fig. 6 described later.

[0029] Other Examples The present invention is based on the above-described embodiment as one basic technical concept, but the following modifications can be considered. First, the configuration example shown in Fig. 4(b) can be said to be a modification of the first embodiment already described, i.e., Fig. 4(a), in regard to the pressing piece 20, and is a modification of the snap action portion 24 that firmly holds the pressing piece 20. That is, the snap action portion 24 is formed by providing a tongue-shaped extension portion 22c as the operation grip fitting portion 22b in the block-shaped pressing piece 20.

[0030] In the above-described first embodiment, the pressing piece 20 (holding portion 21) is mainly assumed to be realized by hollowing out the fitting recess 22 (ruler rod fitting portion 22a / operating grip fitting portion 22b) from a cylindrical block-shaped member, i.e., a solid body, but the pressing piece 20 is not necessarily limited to this form. That is, the pressing piece 20 can be formed as a hollow member having a substantially constant thickness, for example as shown in FIG. 5, and such a pressing piece 20 can be obtained by molding a pellet-shaped resin material in a mold. The pressing piece 20 shown in FIG. 5 has a pressing action portion 25 formed in a flat shape. This is intended to press the workpiece W with the flat surface (pressing action portion 25) when the ruler rod 15 is rotated approximately 90 degrees relative to the slide base 12 in a protruding position, thereby reliably preventing the workpiece W from falling over.

[0031] 6, the holding action part 21 also serves as the ruler rod 15 of the rotary ruler 11, and is formed to be slidable along the longitudinal direction of the ruler rod 15. That is, the holding action part 21 in this configuration example is provided with a rod-shaped sliding rod 20A on the guide part 15G formed on the ruler rod 15, and a flat pressing piece 20 is attached to the front end of the rod. When configured in this manner, the projection dimension of the pressing piece 20 can be appropriately adjusted to accommodate different thickness dimensions of the workpiece W. Reference numeral 20B in the figure denotes a lock bolt for maintaining the set state of the pressing piece 20, i.e., the projected state.

[0032] In all of the above-mentioned embodiments (configuration examples), the ruler rod 15 of the rotary ruler 11 is used for the holding action part 21, but for example, in the configuration example shown in Fig. 7, the holding action part 21 of the work temporary holding device 10 is formed using the slide base 12 instead of the ruler rod 15. That is, the holding action part 21 in this configuration example is, as an example, a rod-shaped member in the shape of a bell crank when viewed from above, and a pressing piece 20 is formed protruding from one end of the rod-shaped member, and is configured to be able to hold the work W at a position corresponding to the thickness position by appropriately rotating this. And, the locked state can be configured to be locked by operating the lock handle 13 of the slide base 12, for example. [Explanation of symbols]

[0033] 1 Panel saw 2 Frames 3. Worktable 3A Preparation side 3S bearing surface 4. Horizontal ruler 5 Circular saw unit 5A circular saw blade 6 Clamping device 7 Operation Panel 8 Rotating Ruler Rail 10 Workpiece temporary holding device 11 Rotating Ruler 12 Slide Base 12A display board 13 Lock handle 13A Lock Piece 14 Mark Line 15 Ruler rod 15G Guide part 16 Auxiliary rod 17 Operation grip 18 Rotating shaft 19 Torque setting bolt 20 Clamp 20A sliding rod 20B Rock Bolt 21 Holding action part 22 Fitting recess 22a Ruler rod insertion part 22b Operation grip fitting part 22c extension 24 Snap action part 25 Pressing part 82 Scale Double work

Claims

1. A workpiece temporary holding device for a panel saw is provided on a panel saw that vertically cuts a workpiece supported on a worktable by a vertically moving circular saw unit, and temporarily holds the workpiece prior to cutting the workpiece, The panel saw is provided with a rotary ruler for regulating the width dimension when cutting a workpiece, and the rotary ruler is provided with a ruler rod configured to be rotatable from an upward direction to a forward direction, and configured so that the angle of the ruler rod can be set between the upward retracted state in which the ruler rod is positioned rearward of a support surface of the work table, and the forward protruding state in which the ruler rod protrudes forward from the support surface, The panel saw work temporary holding device is provided in the vicinity of the work table and is provided on a component of the rotary ruler, The panel saw work temporary holding device is provided with a holding action part having a pressing piece extending toward the installation side of the circular saw unit, When cutting the workpiece, the ruler rod is set in a protruding state so that the edge of the workpiece on the side not to be cut is brought into contact with the ruler rod, thereby regulating the cutting width dimension of the workpiece; Furthermore, this work temporary holding device for a panel saw is characterized in that the holding action part including the pressing piece is positioned on the front side of the work, thereby preventing the work supported by leaning it against the work table from falling to the front side.

2. 2. A workpiece temporary holding device for a panel saw according to claim 1, wherein said holding portion is configured by attaching a pressing piece to a rotating tip of a ruler rod of a rotating ruler.

3. 3. A work temporary holding device for a panel saw according to claim 2, wherein said pressing piece is constructed as a separate member from said ruler rod, and said separate member is constructed so as to be freely fitted and assembled to said ruler rod.

4. The work temporary holding device for a panel saw as described in claim 3, characterized in that the pressing piece is formed in a cylindrical block shape and has a fitting recess in a part thereof into which the rotating tip end of the ruler rod is fitted to enable free fitting and assembly, and the fitting recess is provided with a snap action portion to maintain the fitted and assembled state.

5. A panel saw that cuts a workpiece supported on a work table vertically using a vertically movable circular saw unit, The panel saw is characterized in that it comprises the panel saw work temporary holding device according to any one of claims 1 to 4.

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