A tool holder pressing structure for a four-sided planer

Abstract

The present invention relates to a tool holder clamping structure for a four-sided planer, which is used for adjusting the position of a tool holder (2). A pressure strip (3) is arranged on one side of the tool holder (2). The pressure strip (3) clamps the tool holder (2) via an inclined surface, has a good clamping effect, is not easy to loosen, and does not cause damage to the tool holder (2). The clamping of the pressure strip (3) is achieved by the relative movement of a wedge block (5) and an L-shaped block (6). When a clamping screw (8) rotates, the distance between the clamping structure (7) and the wedge block (5) is changed, thereby clamping or preventing the L-shaped block (6) from loosening. When clamping, the L-shaped block (6) moves downward along the inclined surface in contact with the wedge block (5), thereby driving the screw (4) at the bottom of the pressure strip (3) to move downward, so that the pressure strip (3) clamps the tool holder (2). Otherwise, the pressure strip (3) releases the pressure on the tool holder (2).

Description

Technical Field

[0001] The invention relates to the technical field of four-side planers, in particular to a tool holder pressing structure of a four-side planer. Background Art

[0002] The four-side planer is used to plan wood. In order to process wood of different sizes, the position of the planer can be adjusted. The adjustment method is usually to adjust the position of the entire knife seat, thereby adjusting the position of the planer. After the knife seat is adjusted to the right position, it needs to be fixed. The common fixing method is to set a clamping screw on the frame, and tighten the knife seat from the side through the clamping screw. Although this method of fixing the knife seat is efficient and can quickly loosen and tighten the knife seat, it also has the problem of poor tightening effect. The tool holder is tightened by a clamping screw, and the only force-bearing point of the tool holder is the clamping screw. When the planer is processing the wood, the tool holder is continuously subjected to the force transmitted from the wood. After long-term operation, the clamping screw is likely to loosen or deform and fail, resulting in instability of the tool holder, so that the precision of the processed wood does not meet the requirements; and by clamping the tool holder at one point with the clamping screw, it is also likely to deform the contact surface between the tool holder and the clamping screw, resulting in an uneven contact surface between the tool holder and the frame, which makes it impossible for the tool holder to slide smoothly on the frame to adjust its position, so that it is necessary to stop work and grind the tool holder, wasting a lot of time and maintenance costs. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a clamping structure which has a good clamping effect and does not cause damage to the knife seat.

[0004] The objective of the present invention is achieved through the following technical solutions: a tool holder clamping structure for a four-sided planer, used for adjusting the position of the tool holder, the two side surfaces of the tool holder are inclined surfaces, and one side of the tool holder is a frame, the frame is in contact with one inclined surface of the tool holder, a plurality of positioning holes are arranged on the frame, the plurality of positioning holes are distributed in a straight line and are all located on the lower side of another inclined surface of the tool holder, a pressure strip is arranged above the positioning hole, at least one side surface of the pressure strip is an inclined surface, and the inclined surface of the pressure strip is in contact with another inclined surface of the tool holder; a wedge block is arranged below the positioning hole, the wedge surface of the wedge block is located on the bottom surface, a vertical screw is arranged on the pressure strip, a vertical first through hole is arranged on the wedge block, and the screw passes through The frame and the first through hole, the lower end of the screw rod is sleeved with an L-shaped block and a limit nut, one of the two adjacent surfaces on the inner side of the L-shaped block (6) is an inclined surface, and the inclined surface is in contact with the wedge surface at the bottom of the wedge block (5), and the limit nut is located at the bottom of the L-shaped block, and the wedge block and the wedge surface of the L-shaped block are in contact with each other, and the L-shaped block is provided with a second through hole, and the second through hole is parallel to the axis of the first through hole, and the wedge surface of the wedge block is provided with a screw hole, and the axis of the screw hole is arranged horizontally, and the L-shaped block is provided with a third through hole in the horizontal direction, and a clamping screw is arranged in the screw hole, and the clamping screw passes through the through hole of the L-shaped block, and a clamping structure is sleeved on the clamping screw, and one end of the clamping structure is against the L-shaped block.

[0005] At least one of the first through hole and the second through hole is a strip-shaped hole, and the third through hole is a strip-shaped hole.

[0006] The clamping structure is a step arranged on the screw rod, and may also be a nut for clamping the screw rod, or a nut arranged on the clamping screw rod, or a positioning pin arranged on the clamping screw rod.

[0007] The pressure strip is provided with a hole, and the screw rod is inserted from the top of the pressure strip and passes through the bottom. The screw rod passes through the pressure strip, the frame, the wedge block and the L-shaped block from top to bottom, and a nut is installed at the bottom of the L-shaped block.

[0008] The positioning pin on the compression screw is installed through a pin hole, the pin hole is located on the compression screw and the axis of the pin hole is perpendicular to the axis of the compression screw.

[0009] The positioning holes are threaded holes, the pressure strips are connected to the threaded holes by screws, and some screws are not completely tightened, so that there is a gap between the pressure strips and the frame.

[0010] At least two nuts are arranged at the bottom of the L-shaped block.

[0011] The present invention has the following advantages:

[0012] 1. The compaction effect is good. The pressure strip and the knife seat are in surface contact. Therefore, the pressure is transmitted through the entire inclined surface during compaction, and the compaction force is evenly distributed;

[0013] 2. The surface contact method prevents the clamping force from being concentrated at one point, which will not cause damage to the tool holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a cross-sectional view of the present invention;

[0015] Figure 2 for Figure 1 Sectional view at AA;

[0016] Figure 3 It is a top view of the wedge block;

[0017] In the figure: 1-frame, 2-knife holder, 3-pressing strip, 4-screw, 5-wedge block, 6-L-shaped block, 7-pressing structure, 8-pressing screw, 9-first through hole, 10-second through hole, 11-third through hole. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0019] like Figure 1 As shown, a tool holder clamping structure for a four-sided planer is used to adjust the position of a tool holder 2, wherein the tool holder 2 is placed on a frame 1 and can move on the frame 1, wherein the side of the tool holder 2 in contact with the frame 1 is an inclined surface, and the slopes of the two inclined surfaces in contact with the frame 1 are the same. A pressure strip 3 is provided on the other side of the tool holder 2, and the cross section of the pressure strip 3 in the figure is a trapezoid, and both sides of the trapezoid are inclined surfaces. In the case of fixing only one tool holder 2, the trapezoid can be replaced by a right-angle trapezoid, and the tool holder 2 can also be clamped and fixed by an inclined surface.

[0020] A screw rod 4 is fixed on the pressure strip 3, and the screw rod 4 is connected to the pressure strip 3 as a hole. A vertical hole is provided on the pressure strip 3 so that the screw rod 4 can pass through the hole. The nut on the top of the screw rod 4 cannot pass through the pressure strip 3. Therefore, when the screw rod 4 is pulled downward, the pressure strip 3 will also be subjected to a downward force, thereby pressing the tool holder 2; the screw rod 4 is vertically arranged, and the bottom end of the screw rod 4 passes through the frame 1, and in turn passes through the wedge block 5 and the L-shaped block 6 arranged on the lower side of the frame 1; then two nuts are arranged under the L-shaped block 6; they are used to limit the position of the L-shaped block 6.

[0021] like Figure 2 As shown, a plurality of positioning holes are provided on the frame 1, and the positioning holes are threaded holes. The pressure strip 3 is connected to the threaded holes by screws and is used to position the pressure strip 3. When tightening the screws, it is not necessary to tighten them, and the tool holder 2 can be kept in a movable state. When the tool holder 2 needs to be tightened, the relative positions of the wedge block 5 and the L-shaped block 6 are adjusted by the horizontally arranged clamping screw 8 to fix the tool holder 2.

[0022] A screw hole in the horizontal direction is provided on the wedge block 5 so that the wedge block 5 is threadedly connected with the clamping screw 8, and a third through hole 11 in the horizontal direction is provided on the L-shaped block 6; the clamping screw 8 passes through the third through hole 11 and matches with the screw hole on the wedge block 5. Because the L-shaped block 6 will move along the contact surface relative to the wedge block 5 when the clamping screw 8 is screwed, the wedge surface of the wedge block 5 is located at the bottom, and one of the two surfaces on the inner side of the L-shaped block 6 is vertically arranged, and the other surface is an inclined surface, which is in contact with the wedge surface, that is, the inclined surface and the wedge surface are the contact surfaces between the L-shaped block 6 and the wedge block 5, and there is a gap between the vertical part of the L-shaped block 6 and the wedge block 5, so that there is space for movement between the L-shaped block 6 and the wedge block 5. The third through hole is a strip hole, and will not cause obstruction to the clamping screw 8 when the L-shaped block 6 moves down or up. In order to enable the tightening screw 8 to drive the L-shaped block 6 when it is turned, a tightening structure 7 is provided on the tightening screw 8. Therefore, when the tightening screw 8 is screwed into the wedge block 5, the tightening structure 7 presses the L-shaped block 6 to move downward. Since a nut is provided on the screw 4 at the bottom of the L-shaped block 6, the L-shaped block 6 drives the screw 4 to move downward, and the screw 4 drives the pressure strip 3 to move downward, so that the inclined surface of the pressure strip 3 presses the inclined surface of the knife seat 2, thereby completing the tightening of the knife seat 2.

[0023] The clamping structure 7 can be implemented in many ways. One end of the clamping structure 7 is to clamp the L-shaped block 6. Therefore, the clamping structure 7 itself is relatively stationary with the clamping screw 8. The clamping structure can be a step structure on the clamping screw 8, or a nut of the clamping screw 8, and the L-shaped block 6 is directly clamped by the nut. A nut can also be sleeved on the clamping screw 8, and the clamping step 7 can be limited by multiple nuts. In order to prevent the rotation of the nut from directly acting on the clamping step 7, a gasket can be set between the clamping step 7 and the nut. A pin hole can also be opened on the clamping screw 8, and the clamping step 7 can be positioned by inserting a positioning pin. Similarly, a gasket can be set between the clamping step 7 and the positioning pin.

[0024] Since the L-shaped block 6 and the wedge block 5 move relative to each other along the inclined plane, at least one of the first through hole 9 and the second through hole 10 is a bar hole, or both are bar holes, so that the wedge block 5 or the L-shaped block 6 can move horizontally.

[0025] like Figure 3 As shown, the first through hole 9 on the wedge block 5 is set as a strip hole. Figure 3 It is a top view of the wedge block 5.

Claims

1. A tool holder clamping structure for a four-sided planer, used for adjusting the position of a tool holder (2), wherein two side surfaces of the tool holder (2) are inclined surfaces, and one side of the tool holder (2) is a frame (1), the frame (1) is in contact with one inclined surface of the tool holder (2), a plurality of positioning holes are arranged on the frame (1), the plurality of positioning holes are distributed in a straight line and are all located on the lower side of another inclined surface of the tool holder (2), a pressure strip (3) is arranged above the positioning holes, and the characteristics are as follows: At least one side of the pressure strip (3) is an inclined surface, and the inclined surface of the pressure strip (3) is in contact with another inclined surface of the knife seat (2); a wedge block (5) is arranged below the positioning hole, and the bottom surface of the wedge block (5) is a wedge surface; a vertical screw rod (4) is arranged on the pressure strip (3), and a first vertical through hole (9) is arranged at the bottom of the wedge block (5); the screw rod (4) passes through the frame (1) and the first through hole (9); an L-shaped block (6) and a limit nut are sleeved on the lower end of the screw rod (4); one of the two adjacent surfaces on the inner side of the L-shaped block (6) is an inclined surface, and the inclined surface is in contact with the wedge surface at the bottom of the wedge block (5); The limiting nut is located at the bottom of the L-shaped block (6), the wedge-shaped block (5) and the wedge-shaped surface of the L-shaped block (6) are in contact with each other, the L-shaped block (6) is provided with a second through hole (10), the axis of the second through hole (10) is parallel to the axis of the first through hole (9), the wedge-shaped block (5) is provided with a screw hole, the axis of the screw hole is horizontal, the L-shaped block (6) is provided with a third through hole (11) in a horizontal direction, a clamping screw (8) is provided in the screw hole, the clamping screw (8) passes through the through hole of the L-shaped block (6), and a clamping structure (7) is provided on the clamping screw (8), and one end face of the clamping structure (7) is against the L-shaped block (6).

2. The tool holder pressing structure of a four-sided molder according to claim 1, characterized in that: At least one of the first through hole (9) and the second through hole (10) is a strip-shaped hole, and the third through hole (11) is a strip-shaped hole.

3. The tool holder pressing structure of a four-sided molder according to claim 1, characterized in that: The pressing structure (7) is a step on the pressing screw (8).

4. The tool holder pressing structure of a four-sided molder according to claim 1, characterized in that: The pressure strip (3) is provided with a hole, and the screw rod (4) is inserted from the top of the pressure strip (3) and passes through the bottom.

5. The tool holder pressing structure of a four-sided molder according to claim 1, characterized in that: The positioning hole is a threaded hole, the pressure strip (3) is connected to the threaded hole by means of screws, and some screws are not completely tightened, so that a gap exists between the pressure strip (3) and the frame (1).

6. The tool holder pressing structure of a four-sided molder according to claim 1, characterized in that: At least two nuts are arranged at the bottom of the L-shaped block (6).

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