Material pressing mechanism for sawing of circular sawing machine

Abstract

The utility model provides a material pressing mechanism for sawing of a circular sawing machine. The material pressing mechanism comprises a base and a sawing head rotationally installed on the base through a rotating shaft, a reset piece used for lifting the sawing head is installed on the rotating shaft, and a handle is installed on the sawing head; the locking component is mounted between the handle and the base and used for hovering the handle at any position; the locking component comprises a locking groove and a locking head, one of the locking groove and the locking head is arranged on the handle, the other one of the locking groove and the locking head is arranged on the base, when the locking head is inserted into the locking groove, the handle is suspended relative to the base, and when the locking head is inserted into the locking groove, the handle and the base are fixed, so that the torsional moment applied to the sawing head by the reset piece is overcome, and the sawing head is fixed. Reset of the sawing head is limited, the sawing head can stay at any position, and then the sawing depth of materials can be controlled.

Description

Technical Field

[0001] This application relates to the field of circular saws, and more particularly to a pressure mechanism for sawing with a circular saw. Background Technology

[0002] A circular saw is a mechanical device that uses a circular saw blade for cutting, and is widely used in the processing of materials such as wood and metal.

[0003] Existing circular saws, such as Figure 1 As shown, it includes a base 1, on which a saw head 10 is rotatably connected via a rotating shaft 100, and the saw head 10 is provided with a handle 2 that assists in rotating the saw head 10 around the rotating shaft 100.

[0004] After the material is sawn, in order to enable the saw head 10 to be automatically raised, a reset component 101 is also installed on the rotating shaft 100 to assist the saw head 10 in resetting. During the material sawing process, the handle 2 drives the saw head 10 to rotate and overcomes the torsional torque of the reset component 101, thereby using the saw blade on the saw head 10 to complete the material cutting.

[0005] During material sawing, if the force applied to the handle 2 is too small to overcome the torsional torque of the reset member 101, the saw head 10 will rise and quickly reset, which may cause the operator to tilt to one side of the saw blade, posing a risk of injury to the operator from the saw blade. During material sawing, due to the presence of the reset member 101, the saw head 10 cannot stop at the specified sawing depth, making material sawing inconvenient.

[0006] Therefore, how to design a circular saw that can hover at a specified cutting depth in a material has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] This application provides a material pressing mechanism for circular sawing machines to at least solve the above-mentioned technical problems existing in the prior art.

[0008] A pressure mechanism for sawing in a circular saw is provided, including a base, a saw head mounted on the base via a rotating shaft, a reset component for lifting the saw head mounted on the rotating shaft, and a handle mounted on the saw head;

[0009] A locking component is installed between the handle and the base to suspend the handle in any position;

[0010] The locking component includes a locking groove and a locking head. One of the locking groove and the locking head is located on the handle, and the other is located on the base. When the locking head is inserted into the locking groove, the handle is suspended relative to the base.

[0011] In one embodiment, a locking head is disposed on the handle, and the locking head is slidably connected to the handle along the radial direction of the handle. A locking groove is disposed on one side of the handle and fixedly mounted on the base.

[0012] In one embodiment, the locking groove includes a first locking surface and a first guide surface, and the locking head includes a second locking surface and a second guide surface. When the sawing head presses down around the rotating shaft, the first guide surface and the second guide surface contact and push the locking head to slide towards the handle axis. When the sawing head returns to its original position around the rotating shaft, the first locking surface and the second locking surface abut against each other to overcome the torsional torque of the reset member.

[0013] In one embodiment, a positioning seat is included, which is fixedly mounted on a base. The positioning seat has a positioning groove coaxial with the rotation shaft, and the handle passes through the positioning groove and extends radially along the rotation shaft.

[0014] In one embodiment, a locking rack is fixedly provided on the inner wall of the positioning groove, and the locking groove is provided on the locking rack.

[0015] In one embodiment, the locking component further includes an unlocking mechanism. The handle is a hollow tube, and the unlocking mechanism is installed in the inner cavity of the handle and connected to the locking head to enable the locking head to slide towards the handle axis.

[0016] In one embodiment, the unlocking mechanism includes an unlocking block, an unlocking rod, and a compression spring. The unlocking block is frustum-shaped and installed in the inner cavity of the handle. The locking head is slidably connected to the peripheral wall of the unlocking block. One end of the unlocking rod is installed on the unlocking block and is arranged along the axial direction of the handle. The other end of the unlocking rod extends out of the handle. The compression spring is installed in the inner cavity of the handle. One end of the compression spring is fixedly connected to the unlocking block, and the other end of the compression spring is fixedly connected to the inner cavity of the handle.

[0017] In one embodiment, the peripheral wall of the unlocking block is provided with a groove, the groove is at an angle to the axis of the unlocking block, the cross-section of the groove is "T" shaped, and a slider is fixedly provided on the locking head and inserted into the groove, the side wall of the slider is slidably connected to the inner wall of the groove.

[0018] In one embodiment, a ball joint is threaded to the end of the handle, and the ball joint has a through hole for the unlocking rod to pass through. A limiting block is fixed to the peripheral wall of the unlocking rod, and the limiting block is located at the through hole to limit the length of the unlocking rod that passes through.

[0019] In one embodiment, the side wall of the handle is provided with a clearance hole communicating with the inner cavity of the handle, the locking head extends out of the handle through the clearance hole, and the side wall of the locking head is slidably connected to the side wall of the clearance hole.

[0020] Compared with the prior art, the material pressing mechanism for circular sawing machines disclosed in this application has the following advantages:

[0021] The locking component is installed between the base and the handle. When the locking head is inserted into the locking groove, it fixes the handle and the base, thereby overcoming the torsional torque applied to the saw head by the reset component, limiting the reset of the saw head, and allowing the saw head to stay in any position. This allows the sawing depth of the material to be controlled. Even if the handle is released, it can prevent the reset component from driving the saw head to reset.

[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0023] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0024] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0025] Figure 1 A schematic diagram of the prior art is shown;

[0026] Figure 2 A schematic diagram of the overall structure of this application is shown;

[0027] Figure 3 A partial sectional view of this application is shown;

[0028] Figure 4 A partial unfolded schematic diagram of this application is shown;

[0029] Figure 5 A schematic diagram of the unlocking block of this application is shown;

[0030] Figure 6 A cross-sectional view of the unlocking mechanism of this application is shown;

[0031] Figure 7 A cross-sectional view of the locking head of this application is shown;

[0032] Figure 8 A cross-sectional view of the ball bearing of this application is shown.

[0033] Explanation of the labels in the diagram:

[0034] 1. Base; 10. Saw head; 100. Rotating shaft; 101. Reset component;

[0035] 2. Handle; 21. Clearance hole; 22. Partition;

[0036] 3. Locking components;

[0037] 31. Locking groove; 311. First locking surface; 312. First guide surface;

[0038] 32. Locking head; 321. Second locking surface; 322. Second guide surface; 323. Slider;

[0039] 33. Unlocking mechanism; 331. Unlocking block; 3311. Slide groove; 332. Unlocking rod; 333. Compression spring;

[0040] 4. Positioning seat; 41. Positioning groove; 42. Locking rack;

[0041] 5. Ball support; 51. Through hole; 52. Limiting block. Detailed Implementation

[0042] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] Existing technologies such as Figure 1 As shown, it includes a base 1, and a saw head 10 is provided on the top of the base 1, wherein the saw head 10 is rotatably connected to the base 1 via a rotating shaft 100.

[0044] The saw head 10 is also fixedly equipped with a handle 2, and the base 1 is provided with a clamping component for fixing materials.

[0045] With the above setup, the material to be cut is placed on the base 1, and then the clamping assembly is used to fix the material. The saw head 10 is started, and the saw blade rotates. Hold the handle 2 and press the saw head 10 down. At this time, the saw head 10 rotates around the rotating shaft 100, so that the saw blade gradually approaches the material and then gradually cuts the material.

[0046] When the material is finished being sawn, in order to quickly lift the saw head 10 away from the material, such as... Figure 1 As shown, a reset component 101 is also mounted on the rotating shaft 100, wherein one end of the reset component 101 is connected to the base 1, and the other end of the reset component 101 is connected to the saw head 10.

[0047] When the saw head 10 is pressed down, the reset member 101 twists to provide a torsional torque for the saw head 10 to lift. After the material is sawn, the handle 2 is released and the saw head 10 is quickly lifted under the action of the reset member 101.

[0048] During operation, if the pressure applied by the operator to the handle is less than the torsional force provided by the reset component 101, the handle 2 will cause the operator to tend to tilt towards the saw blade. The rotation of the saw blade may cause accidental injury to the operator. At the same time, when sawing the material, the position of the handle 2 needs to be manually controlled to control the sawing depth of the material. When the handle 2 is released, the saw head 10 resets and cannot complete the sawing of the material to a uniform depth.

[0049] Therefore, in this embodiment, as Figure 2 As shown, it also includes a locking component 3, which is used to control the position of the handle 2, thereby controlling the depth of the saw blade cutting on the material. When the locking component 3 locks the handle 2, the handle 2 is in a suspended state.

[0050] Specifically, such as Figure 3 As shown, the locking component 3 includes a locking groove 31 and a locking head 32. One of the locking groove 31 and the locking head 32 is mounted on the handle 2, and the other is mounted on the base 1. When the locking head 32 is inserted into the locking groove 31, the handle 2 can be locked.

[0051] In this embodiment, as Figure 2 and Figure 3 As shown, the locking groove 31 is set on the base 1, and the locking head 32 is slidably mounted on the handle 2. Specifically, the locking head 32 is slidably connected to the handle 2 along the radial direction of the handle 2. When the locking head 32 slides outward along the radial direction of the handle 2, the locking head 32 is inserted into the locking groove 31. When the locking head 32 slides inward along the radial direction of the handle 2, the locking head 32 slides out from the locking groove 31, releasing the locking of the handle 2. It is worth noting that "inward" here refers to the side closer to the axis of the handle 2, and "outward" here refers to the side away from the axis of the handle 2.

[0052] Since the handle 2 is fixedly mounted on the saw head 10, and the saw head 10 rotates around the rotating shaft 100, it will drive the locking head 32 to move. In order to make the locking groove 31 fit with the locking head 32, in this embodiment, as follows: Figure 2 and Figure 4 As shown, it includes a positioning seat 4 fixedly installed on the base 1. Specifically, the positioning seat 4 is arc-shaped. The axis of the positioning seat 4 is located on the axis of the rotating shaft 100. The positioning seat 4 is provided with a positioning groove 41, wherein the positioning groove 41 is a through groove. The rotation center of the positioning groove 41 is on the rotating shaft 100. The handle 2 passes through the positioning groove 41 and extends outward along the radial direction of the rotating shaft 100.

[0053] The inner wall of the positioning groove 41 is fixedly provided with a locking rack 42, wherein the locking groove 31 is provided on the locking rack 42.

[0054] In order to achieve the installation of the locking head 32, in this embodiment, as follows: Figure 3 The handle 2 shown is made of hollow tubular material. The peripheral wall of the handle 2 is provided with a clearance hole 21 that communicates with the inner cavity of the handle 2. The locking head 32 extends out of the handle 2 through the clearance hole 21, and the side wall of the locking head 32 is slidably connected to the inner wall of the clearance hole 21.

[0055] During the material sawing process, in order to prevent the locking head 32 from restricting the downward pressure of the handle 2, in this embodiment, as follows: Figure 3 and Figure 4 As shown, the locking groove 31 is provided with a first locking surface 311 and a first guide surface 312, and the locking head 32 is provided with a second locking surface 321 and a second guide surface 322. When the handle 2 is pressed down and the material needs to be sawed, the first guide surface 312 abuts against the second guide surface 322, thereby pushing the locking head 32 to slide inward along the radial direction of the handle 2 so that the locking head 32 can be inserted into the next locking groove 31. As the handle 2 is pressed down, the locking head 32 slides through the locking groove 31 in sequence. When the handle 2 stops moving, the second locking surface 321 of the locking head 32 abuts against the first locking surface 311 of the locking groove 31, thereby restricting the reset member 101 from driving the handle 2 to reset. At this time, the cooperation between the locking head 32 and the locking groove 31 can realize the unidirectional locking of the handle 2.

[0056] In this context, "unidirectional" refers to the direction in which the saw head 10 is lifted upwards.

[0057] When it is necessary to reset the saw head 10, the locking of the handle 2 needs to be manually released. Therefore, in this embodiment, as... Figure 2 , Figure 4 and Figure 6 As shown, the locking component 3 also includes an unlocking mechanism 33. Specifically, the unlocking mechanism 33 includes an unlocking block 331, an unlocking rod 332, and a compression spring 333. Figure 5 As shown, the unlocking block 331 is frustum-shaped, and a groove 3311 is provided on the peripheral wall of the unlocking block 331. The groove 3311 forms an angle with the axis of the unlocking block 331. A slider 323 is fixedly provided on the locking head 32 and inserted into the groove 3311. The side wall of the slider 323 is slidably connected to the inner wall of the groove 3311. The unlocking rod 332 is arranged along the axis of the handle 2. One end of the unlocking rod 332 is connected to the unlocking block 331 by a thread, and the other end of the unlocking rod 332 extends out of the handle 2. One end of the compression spring 333 is fixedly connected to the handle 2, and the other end of the compression spring 333 is fixedly connected to the unlocking block 331.

[0058] It is worth noting that, such as Figure 7 As shown, the cross-section of the slide groove 3311 is T-shaped, and the slider 323 is adapted to the shape of the slide groove 3311.

[0059] Specifically, a partition 22 is fixedly provided in the inner cavity of the handle 2, and a compression spring 333 is provided between the partition 22 and the unlocking block 331, wherein the compression spring 333 is fixedly connected to the partition 22.

[0060] It is worth noting that the upper diameter of the unlocking block 331 is small, while the lower diameter is large. Figure 6 As shown, under the pushing action of the compression spring 333 on the unlocking block 331, the slider 323 is located at the bottom of the slide groove 3311. Here, the slider 323 is located at one end of the large diameter of the unlocking block 331, which can push the locking head 32 outward of the handle 2 so that the locking head 32 can be inserted into the locking groove 31. When the unlocking rod 332 is pressed into the handle 2, the unlocking rod 332 squeezes the compression spring 333 through the unlocking block 331. At this time, the unlocking block 331 moves down. Since the slider 323 and the slide groove 3311 are T-shaped, the slider 323 drives the locking head 32 to slide into the inner cavity of the handle 2, thereby approaching the axis of the handle 2. At this time, the locking head 32 disengages from the locking groove 31, releasing the lock on the handle 2.

[0061] like Figure 8 As shown, the end of the handle 2 is also connected to a ball joint 5 by a thread. The ball joint 5 has a through hole 51, the diameter of which is larger than the diameter of the unlocking rod 332. The unlocking rod 332 extends out of the ball joint 5 through the through hole 51. A limit block 52 is also fixedly installed on the unlocking rod 332. The outer diameter of the limit block 52 is larger than the diameter of the through hole 51. The limit block 52 is used to limit the length of the unlocking rod 332 extending out of the ball joint 5, preventing the unlocking rod 332 from extending excessively.

[0062] With the above configuration, after the material is fixed to the base 1 by the clamping assembly, a downward force is applied by holding the handle 2, causing the saw head 10 to rotate around the rotating shaft 100. The saw blade falls and gradually approaches the material, then performs sawing. As the handle 2 is pressed down, the second guide surface 322 of the locking head 32 abuts against the first guide surface 312 of the locking groove 31, thereby pushing the locking head 32 into the inner cavity of the handle 2. At this time, the locking head 32 pushes the unlocking block 331 through the slider 323. The unlocking block 331 moves and compresses the compression spring 333, driving the unlocking rod 332 to move towards the center. The handle 2 retracts into its inner cavity. After the second guide surface 322 disengages from the first guide surface 312, the compression spring 333 pushes the unlocking block 331 to move along the axis of the handle 2. At this time, the slider 323 is pushed by the inner wall of the slide groove 3311, causing the locking head 32 to slide outward along the radial direction of the handle 2. This allows the locking head 32 to be re-inserted into the locking groove 31. This process is repeated until the handle 2 stops moving. When the handle 2 stops moving, the second locking surface 321 of the locking head 32 abuts against the first locking surface 311 of the locking groove 31, thereby restricting the reset member 101 from lifting and resetting the saw head 10, thus achieving the suspension of the handle 2.

[0063] After the material is sawn, manually press the unlocking rod 332 into the inner cavity of the handle 2. At this time, the unlocking block 331 compresses the compression spring 333. The unlocking block 331 drives the locking head 32 to slide inward along the radial direction of the handle 2 through the sliding groove 3311 and the slider 323. The locking head 32 disengages from the locking groove 31, releasing the lock on the handle 2. The torsional torque of the reset member 101 can drive the sawing head 10 to rotate around the rotating shaft 100, thereby resetting the sawing head 10.

[0064] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A presser mechanism for sawing of a circular sawing machine, for being installed on a circular sawing machine, comprising a base (1), a sawing head (10) rotatably installed on the base (1) through a rotating shaft (100), a reset member (101) installed on the rotating shaft (100) for lifting the sawing head (10), characterized in that, A sawing head (10) is provided with a handle (2); A locking component (3) is arranged between the handle (2) and the base (1) to suspend the handle (2) at any position; The locking component (3) comprises a locking groove (31) and a locking head (32), one of which is arranged on the handle (2) and the other is arranged on the base (1), and when the locking head (32) is inserted into the locking groove (31), the handle (2) is suspended relative to the base (1).

2. A pressure device for a circular saw machine according to claim 1, characterized in that, The locking head (32) is arranged on the handle (2) and is in sliding connection with the handle (2) along the radial direction of the handle (2), and the locking groove (31) is arranged on one side of the handle (2) and is fixedly arranged on the base (1).

3. A pressure device for a circular saw machine according to claim 1 or 2, characterized in that The locking groove (31) comprises a first locking surface (311) and a first guide surface (312), and the locking head (32) comprises a second locking surface (321) and a second guide surface (322), when the sawing head (10) is pressed down around the rotating shaft (100), the first guide surface (312) and the second guide surface (322) are in contact to push the locking head (32) to slide to one side of the axis of the handle (2); when the sawing head (10) is reset around the rotating shaft (100), the first locking surface (311) and the second locking surface (321) are in abutment to overcome the torsional moment of the reset member (101).

4. A pressure device for a circular saw machine according to claim 3, characterized in that, A positioning seat (4) is fixedly arranged on the base (1), and a positioning groove (41) coaxial with the rotating shaft (100) is formed in the positioning seat (4), and the handle (2) extends through the positioning groove (41) and along the radial direction of the rotating shaft (100).

5. A pressure device for a circular saw machine according to claim 4, characterized in that, A locking rack (42) is fixedly arranged on the inner wall of the positioning groove (41), and the locking groove (31) is arranged on the locking rack (42).

6. A pressure device for a circular saw machine according to claim 3, characterized in that, The locking component (3) further comprises an unlocking mechanism (33), the handle (2) is a hollow pipe, and the unlocking mechanism (33) is arranged in the inner cavity of the handle (2) and connected with the locking head (32) to realize the sliding of the locking head (32) to one side of the axis of the handle (2).

7. A pressure device for a circular saw machine according to claim 6, characterized in that, The unlocking mechanism (33) comprises an unlocking block (331), an unlocking rod (332) and a compression spring (333), the unlocking block (331) is in the shape of a circular truncated cone and is arranged in the inner cavity of the handle (2), the locking head (32) is in sliding connection with the peripheral wall of the unlocking block (331), one end of the unlocking rod (332) is arranged on the unlocking block (331), the unlocking rod (332) is arranged along the axial direction of the handle (2), the other end of the unlocking rod (332) extends out of the handle (2), and the compression spring (333) is arranged in the inner cavity of the handle (2), one end of the compression spring (333) is fixedly connected with the unlocking block (331), and the other end of the compression spring (333) is fixedly connected with the inner cavity of the handle (2).

8. A pressure device for a circular saw machine according to claim 7, characterized in that, The peripheral wall of the unlocking block (331) is provided with a sliding groove (3311) having an included angle with the axis of the unlocking block (331), the cross section of the sliding groove (3311) is in the shape of "T", and a sliding block (323) is fixedly arranged on the locking head (32) and inserted into the sliding groove (3311), and the side wall of the sliding block (323) is in sliding connection with the inner wall of the sliding groove (3311).

9. A pressure device for a circular saw machine according to claim 7, characterized in that, The end of the handle (2) is threadedly connected with a ball holder (5), the ball holder (5) is provided with a through hole (51) for the unlocking rod (332) to pass through, the peripheral wall of the unlocking rod (332) is fixedly provided with a limiting block (52), and the limiting block (52) is located at the through hole (51) and used to limit the length of the unlocking rod (332) to pass through.

10. The pressure mechanism for sawing according to claim 6, wherein The side wall of the handle (2) is provided with an avoiding hole (21) in communication with the inner cavity of the handle (2), the locking head (32) extends out of the handle (2) through the avoiding hole (21), and the side wall of the locking head (32) is in sliding connection with the side wall of the avoiding hole (21).

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