Press-in pull rod bench saw

Abstract

The utility model relates to the technical field of electric tools, in particular to a press-in type pull rod bench saw which solves the problems that an existing bench saw with a movable saw blade is unsafe in cutting, the saw blade is prone to being damaged and operation is inconvenient, a cutting head is arranged below a table plate in a sliding mode, and a long groove allowing the saw blade to move is formed in the table plate. The guide rod is arranged below the platen, the sliding base is arranged on the guide rod in a sliding mode, a pull rod for pulling the sliding base to move is arranged on the sliding base, the upper portion of the rear side of the cutting head is hinged to the sliding base, and the lower portion of the rear side of the cutting head is hinged to the front end of a first connecting rod; the upper end of the second connecting rod is fixed to the pressing handle, the lower end of the second connecting rod is hinged to the rear end of the first connecting rod, and the saw blade has a cutting state in which the second connecting rod and the first connecting rod drive the cutting head to swing and rise when the rear end of the pressing handle is pressed downwards and a non-cutting state in which the saw blade is located below the platen after the cutting head descends due to the dead weight when the rear end of the pressing handle is released. A straight cutting unit and an inclined cutting unit can be arranged on the bench saw.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric tool technical field, especially a kind of press-in type pull rod bench saw. BACKGROUND

[0002] Bench cutting machine is short for bench saw, for the cutting of plate material, plate material includes wooden board, ceramic plate material and aluminum alloy plate material etc., and the mode of bench saw cutting is divided into saw blade moving type cutting and plate material moving type cutting according to the different moving mode of saw blade and plate material, saw blade moving type cutting is that plate material does not move, and cutting is carried out by rotating and moving linearly, and plate material moving type cutting is that saw blade only rotates, and cutting is carried out by pushing plate material.

[0003] The bench saw of saw blade moving type cutting, cutting head is below the table plate and is arranged on slide rail, long slot is provided on the table plate, saw blade is extended from long slot, pull rod is connected with cutting head shell, and cutting can be carried out by pulling pull rod, and the existing saw blade moving type bench saw has the form that the axis of cutting head is set to height adjustable, has the adjusting and locking device of cutting head lifting, and cutting head is locked in height before cutting, the structure of saw blade is still always extended from the table plate, and when cutting is completed and retracts, the material head cut down by plate material not fixed often has part just cover on long slot (material head will be micro-rotation in situ when cutting ends), and such material head will be hit by the saw blade of retraction, causes unsafe accident, even if saw blade stops before retraction, but also will be hit on material head, so as to damage saw blade and bring inconvenience to operation. SUMMARY

[0004] The utility model solves the technical problem that it provides a kind of press-in type pull rod bench saw, overcomes the problem of the existing saw blade moving type bench saw unsafe, saw blade easy to damage and inconvenient operation.

[0005] The technical scheme that the utility model solves its technical problem is as follows: a kind of press-in type pull rod bench saw, with table plate and cutting head, the cutting head is slidably arranged below the table plate, the saw blade is installed on the cutting head, the long slot allowing the saw blade to extend and allowing the saw blade to move in the cutting direction is provided on the table plate, the cutting head has shell, has guide rod located below the table plate and sliding base slidably arranged on the guide rod, the upper side of the rear side of the cutting head shell is hinged on the sliding base, and the hinge is first hinge point, the sliding base is fixed with pull rod, and the tension or the thrust acting on the pull rod rearward or forward can make the cutting head retreat or move forward respectively;The lower side of the rear side of the shell is hinged on the front end of first connecting rod, and the hinge is second hinge point;

[0006] It has press handle, the front end of the press handle is hinged on the pull rod, and the hinge is third hinge point;It has second connecting rod, the upper end of the second connecting rod is fixed on the press handle, and the lower end of the second connecting rod is hinged with the rear end of first connecting rod, and the hinge is fourth hinge point.

[0007] The saw blade has a cutting state of being raised and swinging around the first hinge point driven by the second connecting rod and the first connecting rod when the rear end of the pressing handle is pressed, and a non-cutting state of being lowered below the table after the cutting head is released and the weight of the cutting head is used to drive the cutting head to lower.

[0008] Specifically, the sliding base is provided with an arc-shaped sliding groove with the first hinge point as the center at a position in front of the cutting head, and the front side of the shell is provided with a stabilizing rod extending into the arc-shaped sliding groove, so that the cutting vibration of the cutting head is reduced by the combination of the stabilizing rod and the arc-shaped sliding groove.

[0009] Specifically, in order to change the table saw into a plate moving type table saw, the sliding base is provided with front and rear locking devices for positioning the cutting head at any front and rear position on the guide rod.

[0010] Specifically, in order to meet different use requirements, the upper and lower positioning devices are arranged between the pressing handle and the pull rod to control the depth of the cutting head.

[0011] Specifically, in order to facilitate operation, the rear end of the pressing handle is provided with a handle, and the handle is provided with a switch for controlling the motor of the cutting head.

[0012] Also in order to facilitate operation, the handle is provided with a safety device for locking the switch in the open state or the closed state, respectively.

[0013] In order to meet the cutting requirements of straight and bevel angle cuts of the plate, the table of the table saw is provided with two long grooves arranged in parallel at intervals, and the table saw has two cutting units, one being a straight cutting unit and the other being a bevel cutting unit, each cutting unit comprising the guide rod, the sliding base, the cutting head, the pull rod, the first connecting rod, the pressing handle and the second connecting rod, the axis of the cutting head in the straight cutting unit being horizontal, the axis of the cutting head in the bevel cutting unit being at an angle of 45 degrees with the horizontal plane, the rotation axis of the first hinge point in the bevel cutting unit being parallel to the axis of the cutting head in the bevel cutting unit, and the straight cutting unit and the bevel cutting unit allowing the table saw to cut vertical cuts and 45-degree bevel cuts, respectively.

[0014] In order to facilitate the swinging operation of the cutting head, the hinge structure of the second hinge point and the fourth hinge point in the bevel cutting unit is a spherical hinge structure.

[0015] Since the replacement of the saw blade in the bevel cutting unit is affected by the table, the tool hole for the tool to be screwed in for installing the saw blade is arranged beside the long groove corresponding to the bevel cutting unit on the table.

[0016] The beneficial effects of the table saw are as follows:

[0017] The utility model discloses a cutting head is set to swing's form on the basis of reciprocating movement, and the cutting head is below the platform when not cutting, and the cutting head is lifted to cut through pressing the handle, so that the pull rod type bench saw uses safety, and the saw blade can be protected, and the operation is flexible and convenient.

[0018] Second, the utility model can realize both saw blade movable cutting and plate movable cutting.

[0019] Third, the utility model sets up two kinds of cutting units and can cut straight and oblique. DRAWINGS

[0020] Figure 1 It is the perspective view of the utility model;

[0021] Figure 2 It is the side view of the utility model when the saw blade is in the non-cutting state;

[0022] Figure 3 It is the side view of the utility model when the saw blade is in the cutting state;

[0023] Figure 4 It is the schematic view showing the position relation among the cutting head, sliding base and guide rod in the utility model;

[0024] Figure 5 It is the schematic view showing the cutting head of the utility model when having straight cutting unit and inclined cutting unit.

[0025] In the drawing: 1, platform, 1-1, long slot, 1-2, tool hole, 2, cutting head, 2-1, saw blade, 3, pull rod, 4, guide rod, 5, sliding base, 6, first hinge point, 7, first connecting rod, 8, second hinge point, 9, pressing handle, 9-1, handle, 10, third hinge point, 11, second connecting rod, 12, fourth hinge point, 13, arc-shaped sliding slot, 14, stabilizing rod, 15, front and rear locking device, 16, up and down positioning device, 17, switch, 18, safety device. DETAILED DESCRIPTION

[0026] The utility model is further explained technical features with the following embodiment, but the protection scope of the utility model is not limited to the following embodiment.

[0027] The utility model discloses a pressing type pull rod bench saw, can set up the structure of two cutting units with straight cutting unit and inclined cutting unit, to make the use of user more convenient, of course can also set up only one kind of cutting unit's bench saw, and the advantage is small volume and more convenient to carry, for the convenience of understanding, the structure of two cutting units is shown in the attached Figure 1 The structure of two cutting units is shown, and the attached Figure 2 And 3As shown, it has a table plate 1 and a cutting head 2, the cutting head 2 is slidingly arranged below the table plate 1, a saw blade 2-1 is installed on the cutting head 2, and a long slot 1-1 is arranged on the table plate 1 to allow the saw blade 2-1 to extend and move in the cutting direction.

[0028] The structure of a cutting unit is that the cutting head 2 has a shell, a guide rod 4 located below the table plate 1 and a sliding base 5 slidingly arranged on the guide rod 4, as shown in the attached Figure 4 As shown, the upper rear side of the shell of the cutting head 2 is hinged to the sliding base 5, the hinged position is the first hinge point 6, a pull rod 3 is fixed on the sliding base 5, the rearward pulling force or the forward pushing force acting on the pull rod 3 can respectively make the cutting head 2 move backward or forward, the lower rear side of the shell is hinged to the front end of a first connecting rod 7, and the hinged position is the second hinge point 8; a pressing handle 9 is provided, the front end of the pressing handle 9 is hinged to the pull rod 3, and the hinged position is the third hinge point 10; a second connecting rod 11 is provided, the upper end of the second connecting rod 11 is fixed to the pressing handle 9, and the lower end of the second connecting rod 11 is hinged to the rear end of the first connecting rod 7, and the hinged position is the fourth hinge point 12; the cutting head 2, the mutually fixed sliding base 5 and the pull rod 3, the mutually fixed pressing handle 9 and the second connecting rod 11, and the first connecting rod 7 form a four-bar mechanism;

[0029] The saw blade 2-1 has a cutting state of being lifted by the second connecting rod 11 and the first connecting rod 7 to swing around the first hinge point 6 when the rear end of the pressing handle 9 is pressed, and a non-cutting state of being lowered below the table plate 1 due to the weight of the cutting head 2 when the rear end of the pressing handle 9 is released, as shown in the attached Figure 2 , and the cutting state is as shown in the attached Figure 3 ;

[0030] An arc-shaped sliding groove 13 with the first hinge point 6 as the center is arranged on the sliding base 5 in front of the cutting head 2, a stabilizing rod 14 is arranged on the front side of the shell and extends into the arc-shaped sliding groove 13, the combination of the stabilizing rod 14 and the arc-shaped sliding groove 13 reduces the cutting vibration of the cutting head 2, the cross section of the arc-shaped sliding groove 13 is U-shaped, a rolling bearing is installed on the rod segment of the stabilizing rod 14 extending into the U-shaped groove, and the outer ring of the rolling bearing is attached to the inner side wall of the U-shaped groove;

[0031] A front and rear locking device 15 is arranged on the sliding base 5 to position the cutting head 2 at any front and rear position on the guide rod 4, a sliding sleeve on the sliding base 5 is sleeved on the guide rod 4, and the locking device 15 is a tightening bolt arranged on the sliding sleeve, the head of the tightening bolt can be pressed against the guide rod 4;

[0032] A position device 16 is arranged between the pressing handle 9 and the pull rod 3 to control the lowering depth of the cutting head 2, the position device 16 is a positioning bolt, the positioning bolt is screwed on the pressing handle 9 and pressed against the pull rod 3, as shown in the attached Figure 3As shown, screwing the positioning bolt upwardly increases the angle between the pressing handle 9 and the pull rod 3, and reduces the descending depth of the cutting head 2, so that the saw blade with a smaller diameter can be used, and the pressing handle 9 also applies a forward or backward force to the pull rod 3;

[0033] The rear end of the pressing handle 9 is provided with a handle 9-1, and the handle 9-1 is provided with a switch 17 for controlling the motor of the cutting head 2.

[0034] The handle 9-1 is provided with a safety device 18 for locking the switch 17 in the open state or the closed state.

[0035] The above description mainly introduces the structure of a unit, and the following mainly introduces the case of providing two cutting units on the table saw.

[0036] In combination with all the drawings, the table plate 1 of the table saw is provided with two long grooves 1-1 arranged in parallel at intervals, and the table saw has two cutting units, one being a straight cutting unit and the other being an inclined cutting unit, each cutting unit comprising a guide rod 4, a sliding base 5, a cutting head 2, a pull rod 3, a first connecting rod 7, a pressing handle 9 and a second connecting rod 11, the axis of the cutting head 2 in the straight cutting unit being horizontal, and the axis of the cutting head 2 in the inclined cutting unit being at an angle of 45 degrees with the horizontal plane, as shown in the accompanying drawings. Figure 5 As shown, the rotation axis of the first hinge joint 6 in the inclined cutting unit is parallel to the axis of the cutting head 2 in the inclined cutting unit, and the straight cutting unit and the inclined cutting unit enable the table saw to cut the plate material into vertical cuts or 45-degree inclined cuts, respectively.

[0037] The hinge structure of the second hinge joint 8 and the fourth hinge joint 12 in the inclined cutting unit is a spherical hinge structure, and the second connecting rod 11 in the inclined cutting unit is downwardly extended and leftwardly or rightwardly inclined when viewed from the rear to the front.

[0038] The long groove 1-1 corresponding to the inclined cutting unit on the table plate 1 is provided with a tool hole 1-2 for facilitating the insertion of a nut tool when the saw blade 2-1 is installed, and the nut is a nut for fixing the saw blade 2-1 on the shaft, and the saw blade 2-1 can be removed by removing the nut.

[0039] Based on the above ideal embodiments of the present application, the relevant personnel can make various changes and modifications without deviating from the technical concept of the present application, and the technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of the claims.

Claims

1. A press-in type pull rod bench saw, having a table plate (1) and a cutting head (2) slidingly arranged below the table plate (1), a saw blade (2-1) being mounted on the cutting head (2), a long slot (1-1) being provided on the table plate (1) to allow the saw blade (2-1) to extend and move in a cutting direction, the cutting head (2) having a housing, characterized in that: a guide rod (4) is arranged below the table plate (1), and a sliding base (5) is slidingly arranged on the guide rod (4), the upper rear side of the housing of the cutting head (2) is hingedly connected to the sliding base (5), and the hinge point is a first hinge point (6), a pull rod (3) is fixed on the sliding base (5), and a rear pulling force or a forward pushing force acting on the pull rod (3) can respectively make the cutting head (2) move backward or forward, the lower rear side of the housing is hingedly connected to the front end of a first connecting rod (7), and the hinge point is a second hinge point (8); a pressing handle (9) is arranged, the front end of the pressing handle (9) is hingedly connected to the pull rod (3), and the hinge point is a third hinge point (10); a second connecting rod (11) is arranged, the upper end of the second connecting rod (11) is fixed on the pressing handle (9), and the lower end of the second connecting rod (11) is hingedly connected to the rear end of the first connecting rod (7), and the hinge point is a fourth hinge point (12); the saw blade (2-1) has a cutting state of being lifted and swung around the first hinge point (6) by the second connecting rod (11) and the first connecting rod (7) when the rear end of the pressing handle (9) is pressed, and a non-cutting state of being lowered below the table plate (1) by the weight of the cutting head (2) when the rear end of the pressing handle (9) is released. An arc-shaped sliding groove (13) with the first hinge point (6) as the center is arranged on the sliding base (5) at a position in front of the cutting head (2), a stabilizing rod (14) is arranged on the front side of the housing and extends into the arc-shaped sliding groove (13), and the combination of the stabilizing rod (14) and the arc-shaped sliding groove (13) reduces cutting vibration of the cutting head (2). A front-rear locking device (15) is arranged on the sliding base (5) to position the cutting head (2) at any front-rear position on the guide rod (4). An up-down positioning device (16) is arranged between the pressing handle (9) and the pull rod (3) to control the lowering depth of the cutting head (2).

2. The plunge bar table saw of claim 1, wherein: The rear end of the pressing handle (9) has a handle (9-1), and a switch (17) for controlling the motor of the cutting head (2) is arranged on the handle (9-1).

3. The plunge bar table saw of claim 1, wherein: An insurance device (18) is arranged on the handle (9-1) to lock the switch (17) in an open state or a closed state, respectively.

4. The plunge bar table saw of claim 1, wherein: ​ 5. The plunge bar table saw of claim 1, wherein: ​ 6. The plunge bar table saw of claim 5, wherein: ​ 7. The plunge bar table saw of any one of claims 1 to 6, wherein: The table saw has two long grooves (1-1) arranged in parallel on the table plate (1), and has two cutting units, one is a straight cutting unit and the other is an oblique cutting unit, each cutting unit comprises the guide rod (4), the sliding base (5), the cutting head (2), the pull rod (3), the first connecting rod (7), the pressing handle (9) and the second connecting rod (11), the axis of the cutting head (2) in the straight cutting unit is horizontal, the axis of the cutting head (2) in the oblique cutting unit is at an angle of 45 degrees with the horizontal plane, the rotary axis of the first hinge point (6) in the oblique cutting unit is parallel to the axis of the cutting head (2) in the oblique cutting unit, and the straight cutting unit and the oblique cutting unit enable the table saw to cut vertical cuts and 45-degree oblique cuts respectively.

8. The plunge bar table saw of claim 7, wherein: The hinge structure of the second hinge point (8) and the fourth hinge point (12) in the oblique cutting unit is a spherical hinge structure.

9. The plunge bar table saw of claim 7, wherein: The table plate (1) is provided with a tool hole (1-2) beside the long groove (1-1) corresponding to the oblique cutting unit for facilitating the extension of a nut tool when the saw blade (2-1) is installed.

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