Workpiece clamping mechanism

Abstract

The utility model provides a workpiece clamping mechanism, which comprises a fixed seat, a fixed seat, a fixed seat, a movable seat, a movable seat, a movable seat, a movable seat and a movable seat, and is characterized in that the fixed seat is fixedly arranged above a worktable and is provided with a mounting groove in which a mounting sleeve is arranged; the pressing rod is movably inserted into the mounting sleeve; the locking block is rotatably mounted in the mounting groove; the limiting block is rotatably installed in the installation groove and corresponds to the locking block, the locking block is roughly in an L shape, one end of the locking block serves as a locking end locked with the pressing rod, a reset spring is arranged between the other end of the locking block and the installation groove, and when the limiting block is overturned upwards, the limiting block is pressed on the bent portion of the locking block, and the limiting block and the locking block are locked through the reset spring. When the limiting block is turned over downwards, the locking end part is pushed to rotate towards the pressing rod and is locked with the pressing rod, so that the pressing rod is in a locked state, when the limiting block is turned over downwards, the limiting block is separated from the bent part of the locking block, the locking end part rotates far away from the pressing rod under the action of the spring force of the reset spring, and the pressing rod is switched from the locked state to the unlocked state.

Description

Technical Field

[0001] This utility model belongs to the field of processing equipment technology, and specifically relates to a workpiece clamping mechanism. Background Technology

[0002] When a miter saw processes a workpiece, the miter saw is positioned on a base and can rotate around the center of the base. The worktable is coplanar with the upper surface of the base, and the workpiece is placed on the worktable. Before processing, a workpiece clamping mechanism is needed to clamp and fix the workpiece on the worktable.

[0003] Existing workpiece clamping mechanisms typically include a fixed base mounted above the worktable and a screw threaded onto the fixed base. Rotating the screw adjusts the distance between its bottom end and the workpiece below, causing the screw to move downwards and clamp the workpiece, thus fixing it to the worktable. However, due to the small pitch of the screw, a considerable amount of time is required to rotate the screw downwards to clamp the workpiece, resulting in low processing efficiency and inconvenience in practical use. Utility Model Content

[0004] To address the shortcomings of the existing technology, the purpose of this utility model is to provide a workpiece clamping mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a workpiece clamping mechanism for fixing a workpiece to be processed on a worktable. It comprises: a fixed base, fixedly disposed above the worktable, having a mounting groove containing a mounting sleeve; a pressure rod, movably inserted into the mounting sleeve, with its two ends extending from the top and bottom of the fixed base, respectively; a locking block, rotatably mounted in the mounting groove; and a limiting block, rotatably mounted in the mounting groove and corresponding to the locking block. The locking block is approximately "L"-shaped, with one end serving as a locking end for locking with the pressure rod, and a return spring between the other end and the mounting groove. When the limiting block is flipped upwards, it presses against the bent portion of the locking block, pushing the locking end towards the pressure rod and locking it, thus placing the pressure rod in a locked state. When the limiting block is flipped downwards, it disengages from the bent portion of the locking block, and the locking end rotates away from the pressure rod under the spring force of the return spring, thus switching the pressure rod from a locked state to an unlocked state.

[0007] The workpiece clamping mechanism provided by this utility model may also have the following feature: the pressure rod is a threaded rod, and the locking end has an internal thread that matches the external thread on the outer surface of the threaded rod.

[0008] The utility model provides a workpiece clamping mechanism, which has the following characteristics: the upper end of the pressing rod is provided with a rotating cap, and the lower end is provided with a pressing disc.

[0009] The utility model provides a workpiece clamping mechanism, which has the following characteristics: the protective cover is detachably installed at the edge of the mounting groove of the fixed seat.

[0010] The utility model provides a workpiece clamping mechanism, which has the following characteristics: the handle is used for manually turning the limiting block up and down, the handle is substantially in the shape of an "L", one end is located at the top of the fixed seat and away from the pressing rod, and the other end is located at the outer side of the protective cover and connected with the limiting block.

[0011] The utility model provides a workpiece clamping mechanism, which has the following characteristics: the support rod is used for installing the fixed seat, the support rod is vertically arranged, the upper end is fixedly connected with the fixed seat, and the lower end is used for being installed on the workbench.

[0012] The utility model provides a workpiece clamping mechanism, which has the following characteristics: the number of mounting sleeves is two, and the two mounting sleeves are arranged in an up-down interval.

[0013] The utility model provides a workpiece clamping mechanism, which has the following characteristics: the mounting groove is provided with a spring mounting groove matched with the reset spring, the reset spring is installed in the spring mounting groove, and the two ends are respectively in abutment with the bottom wall of the spring mounting groove and the other end of the locking block.

[0014] The utility model has the following effects and advantages:

[0015] According to the workpiece clamping mechanism, the locking block is substantially in the shape of an "L", one end is used as a locking end for locking the pressing rod, the other end is provided with a reset spring between the mounting groove of the fixed seat, the limiting block is correspondingly arranged with the locking block, when the limiting block is turned up, the limiting block is pressed on the bent part of the locking block, the locking end is turned towards the pressing rod and locked with the pressing rod, so that the pressing rod is in a locked state, when the limiting block is turned down, the limiting block is separated from the bent part of the locking block, the locking end is turned away from the pressing rod under the spring force of the reset spring, so that the pressing rod is switched from the locked state to the unlocked state, therefore, the embodiment can make the pressing rod quickly slide up and down to realize stroke adjustment, greatly shortens the process of adjusting the height of the screw rod by rotating the screw rod in the prior art, and is convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the three-dimensional structure schematic diagram of the workpiece clamping mechanism in the embodiment of the utility model.

[0017] Figure 2 is a perspective view of the workpiece clamping mechanism in the embodiment of the utility model; and

[0018] Figure 3 is a sectional view of the workpiece clamping mechanism in the embodiment of the utility model. DETAILED DESCRIPTION

[0019] The concept, specific structure and generated technical effects of the utility model will be further described below in combination with the drawings to fully understand the purpose, features and effects of the utility model.

[0020] <EMBODIMENT>

[0021] As Figures 1 to 3 shown in the embodiment, a workpiece clamping mechanism 10 is improved on the basis of the existing workpiece clamping mechanism and is used for fixing the workpiece to be processed on the workbench. The workpiece clamping mechanism 10 comprises a fixing seat 11, a supporting rod 12, a pressing rod 13, a locking block 14, a limiting block 15, a protective cover 16 and a handle 17.

[0022] As Figures 1 to 3 shown, the fixing seat 11 is fixedly arranged above the workbench and is used for mounting the pressing rod 13, the locking block 14, the limiting block 15, the protective cover 16 and the handle 17.

[0023] The side of the fixing seat 11 is provided with a mounting groove 111; two mounting sleeves 112 are arranged in the mounting groove 111, the two mounting sleeves 112 are fixedly arranged in the mounting groove 112 in an upper and lower interval, and in the embodiment, the mounting sleeve 112 is a wear-resistant sleeve.

[0024] As Figures 1 to 3 shown, the supporting rod 12 is vertically arranged and is used for mounting the fixing seat, specifically, the upper end of the supporting rod 12 is fixedly connected with the fixing seat, and the lower end is used for mounting on the workbench.

[0025] As Figures 1 to 3 shown, the pressing rod 13 is movably inserted into the two mounting sleeves 112 in a vertical arrangement, and the two ends thereof respectively extend out of the top and bottom of the fixing seat 11.

[0026] In the embodiment, the pressing rod 13 is a threaded rod, the upper end of the threaded rod is provided with a rotating cap 13a, and the lower end is provided with a pressing disc 13b for pressing the workpiece downward.

[0027] As Figure 3 shown, the locking block 14 is rotatably mounted in the mounting groove 111 and is used for locking the pressing rod 13.

[0028] The locking block 14 is substantially in the shape of "L", and its lower end is used as a locking end for locking the pressing rod 13. In the embodiment, the locking end has an inner thread matched with the outer thread of the outer surface of the pressing rod 13.

[0029] A reset spring 141 is arranged between the upper end of the locking block 14 and the mounting groove 111. Specifically, a spring mounting groove 113 matched with the reset spring 141 is arranged at the position corresponding to the upper end of the locking block 14 in the mounting groove 111; the reset spring 113 is mounted in the spring mounting groove 113, and its two ends are respectively in abutment with the bottom wall of the spring mounting groove 113 and the upper end of the locking block 14.

[0030] As shown in Figure 3 , the limiting block 15 is rotatably mounted in the mounting groove 111 and is arranged corresponding to the locking block 14. When the limiting block 15 is flipped upward, the limiting block 15 can be pressed on the bent position of the locking block 14; when the limiting block 15 is flipped downward, the limiting block can be disengaged from the bent position of the locking block 14.

[0031] As shown in Figure 1 and Figure 2 , the protective cover 16 is detachably mounted at the edge of the mounting groove 111 of the fixed seat 11.

[0032] As shown in Figures 1 to 3 , the handle 17 is arranged outside the fixed seat 11 and the protective cover 16, and is used for manually flipping the limiting block 15 up and down.

[0033] In the embodiment, the handle 17 is substantially in the shape of "L", one end of which is located at the top of the fixed seat 11 and away from the pressing rod 13, and the other end is located outside the protective cover 16 and is fixedly connected with the limiting block 15.

[0034] In the embodiment, the use process of the workpiece clamping mechanism 10 is as follows:

[0035] The lower end of the supporting rod 12 is fixedly connected with the workbench, and then the workpiece to be processed is placed at the predetermined position of the workbench.

[0036] The handle 17 is pulled upward, thereby driving the limiting block 15 to flip downward to disengage from the bent position of the locking block 14, and the locking end of the locking block 14 is rotated away from the pressing rod 13 under the spring force of the reset spring 141, so that the pressing rod 13 is in the unlocked state. At this time, the pressing rod 13 rapidly descends under the action of its gravity, and the pressing disc 13b at the bottom of the pressing rod 13 is attached to the upper surface of the workpiece.

[0037] Pulling down the handle 17, the limiting block 15 is turned up, and is pressed on the bending part of the locking block 14, and the locking end of the locking block 14 is turned towards the pressing rod 13 and is locked with the pressing rod 13, that is, the inner thread of the locking end matches the outer thread of the outer surface of the pressing rod 13, so that the pressing rod 13 is switched from the unlocking state to the locking state. At this time, the rotating cap 13a on the top of the pressing rod 13 can be rotated to adjust the pressing force of the pressing rod 13 on the workpiece.

[0038] After the workpiece is processed, the handle 17 is pulled up, the limiting block 15 is turned down, and is separated from the bending part of the locking block 14, so that the pressing rod 13 is switched from the locking state to the unlocking state. Then, the rotating cap 13a is held to pull up the pressing rod 13 to a predetermined height position, and the handle 17 is pulled down, the limiting block 15 is turned up, and the pressing rod 13 is switched from the unlocking state to the locking state. Finally, the workpiece is taken off from the workbench, and the processing of the workpiece is completed.

[0039] Effects of the embodiment

[0040] According to the workpiece clamping mechanism, the locking block is approximately in the shape of "L", one end is used as the locking end for locking with the pressing rod, and the other end is provided with the reset spring between the mounting groove of the fixed seat, the limiting block is correspondingly arranged with the locking block, when the limiting block is turned up, the limiting block is pressed on the bending part of the locking block, the locking end is turned towards the pressing rod and is locked with the pressing rod, so that the pressing rod is in the locking state, when the limiting block is turned down, the limiting block is separated from the bending part of the locking block, and the locking end is turned away from the pressing rod under the spring force of the reset spring, so that the pressing rod is switched from the locking state to the unlocking state, therefore, the pressing rod can be quickly slid up and down to realize the stroke adjustment, and the process of adjusting the height of the screw rod by rotating the screw rod in the prior art is greatly shortened, and the operation is convenient.

[0041] In addition, the pressing rod is a threaded rod, and the locking end has the inner thread matching the outer thread of the outer surface of the threaded rod, on the one hand, the locking effect of the locking block on the pressing rod is further improved, and on the other hand, the clamping force of the workpiece can be finely adjusted by rotating the pressing rod.

[0042] In addition, the handle is approximately in the shape of "L", one end is located at the top of the fixed seat and is away from the pressing rod, and the other end is located on the outside of the protective cover and is connected with the limiting block, so that the operation convenience of turning up and down the limiting block is further improved.

[0043] The above embodiment is a preferred case of the utility model, and is not used to limit the protection scope of the utility model.

Claims

1. A workpiece clamping mechanism for fixing a workpiece to be processed on a worktable, characterized in that, The utility model relates to a workpiece clamping mechanism, including: The fixed seat is fixedly arranged above the workbench and has a mounting groove, and a mounting sleeve is arranged in the mounting groove; The pressing rod is movably inserted into the mounting sleeve, and two ends thereof respectively extend out of the top and bottom of the fixed seat; The locking block is rotatably arranged in the mounting groove; and The limiting block is rotatably arranged in the mounting groove and is arranged correspondingly to the locking block, The locking block is substantially in the shape of an "L", one end thereof is used as a locking end for locking the pressing rod, and the other end is provided with a return spring between the locking end and the mounting groove, When the limiting block is flipped upward, the limiting block is pressed against the bent part of the locking block, the locking end is pushed to rotate towards the pressing rod and is locked with the pressing rod, so that the pressing rod is in a locked state, When the limiting block is flipped downward, the limiting block is disengaged from the bent part of the locking block, and the locking end is rotated away from the pressing rod under the spring force of the return spring, so that the pressing rod is switched from the locked state to the unlocked state.

2. The workpiece clamping mechanism according to claim 1, wherein: wherein The pressing rod is a threaded rod, The locking end has an internal thread matched with an external thread on the outer surface of the threaded rod.

3. The workpiece clamping mechanism according to claim 2, wherein: wherein The upper end of the pressing rod is provided with a rotating cap, and the lower end is provided with a pressing disc.

4. The workpiece clamping mechanism according to any one of claims 1 to 3, characterized in that, Further comprising: The protective cover is detachably arranged at the edge of the mounting groove of the fixed seat.

5. The workpiece clamping mechanism of claim 4, wherein, Further comprising: The handle is used for manually turning the limiting block to flip it up and down, The handle is substantially in the shape of an "L", one end thereof is arranged at the top of the fixed seat and away from the pressing rod, and the other end is arranged on the outer side of the protective cover and is connected with the limiting block.

6. The workpiece clamping mechanism of claim 1, wherein Further comprising: The support rod is used for mounting the fixed seat, The support rod is vertically arranged, the upper end thereof is fixedly connected with the fixed seat, and the lower end thereof is used for being mounted on the workbench.

7. The workpiece clamping mechanism according to claim 1, wherein: wherein The number of the mounting sleeves is two, and the two mounting sleeves are arranged in an up-down interval.

8. The workpiece clamping mechanism according to claim 1, wherein: wherein The mounting groove is provided with a spring mounting groove matched with the return spring, The return spring is arranged in the spring mounting groove, and two ends thereof respectively abut against the bottom wall of the spring mounting groove and the other end of the locking block.

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