Shearing device

Abstract

A shearing device is suitable for shearing a workpiece to be machined and comprises a shell, a motor assembly contained in the shell, a transmission assembly connected to the axial front end of the motor assembly and a shearing body installed at the axial front end of the shell. The shearing body comprises a head shell arranged at the front end of the shell, a fixed blade fixed to the head shell and a movable blade driven by the transmission assembly, and the movable blade rotates relative to the fixed blade to achieve the shearing action. The shearing body comprises a clamping assembly movably installed on the fixed blade, the clamping assembly has a first state of not clamping a workpiece to be machined and a second state of clamping the workpiece to be machined, and when the first state is switched to the second state, the workpiece to be machined drives the clamping assembly to move. And the clamping assembly can automatically fix the to-be-machined workpiece after the to-be-machined workpiece is put in, so that the to-be-machined workpiece cannot slide in the shearing process, and shearing operation is facilitated.

Description

[Technical field]

[0001] The utility model relates to the technical field of shearing devices, in particular to a shearing device with a workpiece clamping component. [Background Technology]

[0002] The shearing device can be used to trim objects such as tree branches and pipes. Pipes include electrical conduits, water pipes, etc. Pipes are often used in homes, engineering projects and other environments. In order to adapt to different installation environments, pipes usually need to be cut and connected according to actual sizes during installation. Currently, there are few shearing devices on the market that can cut large-diameter pipes. When the pipe diameter is large, after the pipe is placed in the blade, the pipe is prone to slip during the cutting process, which is not conducive to the cutting operation.

[0003] In view of this, it is indeed necessary to provide an improved shearing device to overcome the defects of the prior art. [Contents of the utility model]

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a shearing device, wherein a clamping assembly is installed on a fixed blade of the shearing device, and the clamping assembly can reliably fix the workpiece during the shearing process.

[0005] The utility model solves the technical problems of the prior art by adopting the following technical solutions: a shearing device, suitable for shearing a workpiece to be processed, the shearing device comprising a shell, a motor assembly accommodated in the shell, a transmission assembly connected to the axial front end of the motor assembly and a shearing body installed to the axial front end of the shell, the shearing body comprising a head shell arranged at the front end of the shell, a fixed blade fixed to the head shell and a movable blade driven by the transmission assembly, the movable blade rotates relative to the fixed blade to realize a shearing action; the shearing body comprises a clamping assembly movably mounted on the fixed blade, the clamping assembly having a first state in which the workpiece to be processed is not clamped and a second state in which the workpiece to be processed is clamped, and when switching from the first state to the second state, the workpiece to be processed drives the clamping assembly to move.

[0006] A further improvement is: the clamping assembly includes a front end point that contacts the workpiece to be processed, and the movable blade includes an entry point that contacts the workpiece to be processed when shearing the workpiece to be processed; in the first state, the distance between the entry point and the front end point is greater than the distance between the entry point and the front end point in the second state.

[0007] A further improved solution is that the shear body includes a fixing screw connecting the fixed blade and the clamping assembly, and the clamping assembly pivots around the center line of the fixing screw to switch between the first state and the second state.

[0008] A further improved solution is: the clamping assembly includes a front end portion located at the front end of the fixing screw and a rear end portion located at the rear end of the fixing screw, and the length of the front end portion is greater than the length of the rear end portion.

[0009] A further improvement is that a connecting screw is provided at the front end of the fixed blade, and the connecting screw abuts against the front end to limit the downward rotation of the clamping assembly.

[0010] A further improved solution is: the center of gravity of the clamping assembly is located at the front end of the fixing screw, and before the workpiece to be processed is placed in the fixed blade, the front end abuts against the connecting screw.

[0011] A further improved solution is that after the workpiece to be processed is placed in the fixed blade, the workpiece to be processed abuts against the rear end portion to rotate the clamping assembly, and the front end portion fixes the workpiece to be processed on the fixed blade.

[0012] A further improvement is that the front end portion and the rear end portion are integrally formed, and the front end portion and the rear end portion are in an arc shape.

[0013] A further improved solution is: two fixed blades are provided, and the two fixed blades are connected by the connecting screws; two clamping assemblies are provided, and the two clamping assemblies are respectively located on the outsides of the two fixed blades.

[0014] A further improvement is as follows: a line from the entry point to the rotation center of the movable blade is the lever arm length, and the lever arm length is not greater than 65 mm.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the shearing body includes a clamping assembly movably mounted on a fixed blade, the clamping assembly has a first state in which the workpiece to be processed is not clamped and a second state in which the workpiece to be processed is clamped, and when the workpiece to be processed is switched from the first state to the second state, the workpiece to be processed drives the clamping assembly to move. The clamping assembly can automatically fix the workpiece to be processed after it is placed in, so that the workpiece to be processed will not slide during the shearing process, which facilitates the shearing operation. [Drawings]

[0016] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings:

[0017] Figure 1 It is a three-dimensional schematic diagram of the shearing device of the utility model;

[0018] Figure 2 yes Figure 1 A cross-sectional view of the shearing device shown;

[0019] Figure 3yes Figure 2 The shearing device shown is a three-dimensional schematic diagram when the shearing body is in a first state;

[0020] Figure 4 yes Figure 2 The shearing device shown is a three-dimensional schematic diagram when the shearing body is in the second state;

[0021] Figure 5 yes Figure 4 The shearing device shown is a three-dimensional schematic diagram from another angle when the shearing body is in the second state.

[0022] Meaning of the reference numerals in the figures:

[0023] Shearing device 100 housing 1

[0024] Switch 10 Hand guard 11

[0025] Foot plate 12 motor assembly 2

[0026] Transmission assembly 3 shear body 4

[0027] Swinging tooth 40 moving blade 41

[0028] Cutting point 411 fixed blade 42

[0029] Connecting screw 421 clamping assembly 43

[0030] The front end 432 of the fixing screw 431

[0031] rear end 433 front end 434

[0032] Head shell 44 battery pack 5

[0033] Workpiece to be processed 6 [Specific implementation method]

[0034] The terms used in the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. For example, the words "upper", "lower", "front", "back", etc., which indicate the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0035] See also Figures 1 to 5The utility model is shown as a shearing device 100, which is used for shearing pipes of various diameters and materials. The shearing device 100 comprises a housing 1, a motor assembly 2 accommodated in the housing 1, a transmission assembly 3 connected to the axial front end of the motor assembly 2, and a shearing body 4 fixed to the axial front end of the housing 1, wherein the shearing body 4 rotates to shear a workpiece 6 to be processed.

[0036] The shearing body 4 includes a head shell 44 arranged at the front end of the shell 4, a fixed blade 42 fixed to the head shell 4, a movable blade 41 arranged at the upper end of the fixed blade 42, and a clamping assembly 43 movably mounted on the fixed blade 42. The movable blade 41 is driven by the transmission assembly 3, and the movable blade 41 rotates relative to the fixed blade 42 to realize the shearing action.

[0037] Furthermore, the shear body 4 includes a swing tooth 40 connected to the rear end of the movable blade 41 , the swing tooth 40 is gear-engaged with the transmission assembly 3 , and the swing tooth 40 rotates to drive the movable blade 41 to rotate to cut the workpiece 6 to be processed.

[0038] See also Figures 3 to 5 As shown, the clamping assembly 43 has a first state (not shown) in which the workpiece 6 to be processed is not clamped and a second state (not shown) in which the workpiece 6 to be processed is clamped. When switching from the first state to the second state, the workpiece 6 to be processed is placed in the fixed blade 42, which drives the clamping assembly 43 to move to fix the workpiece 6 to be processed.

[0039] The clamping assembly 43 is connected to a side surface of the fixed blade 42 through a fixing screw 431 , and the clamping assembly 43 pivots around a center line of the fixing screw 431 to switch between the first state and the second state.

[0040] Further, the clamping assembly 43 includes a front end portion 432 located at the front end of the fixing screw 431 and a rear end portion 433 located at the rear end of the fixing screw 431, the length of the front end portion 432 is greater than the length of the rear end portion 433, and the center of gravity of the clamping assembly 43 is located at the front end of the fixing screw 431. A connecting screw 421 is provided at the front end of the fixed blade 42, and the connecting screw abuts against the front end portion 432 to limit the downward rotation of the clamping assembly 43.

[0041] In the first state, under the action of gravity, the front end portion 432 of the clamping assembly 43 is pressed downward, and the rear end portion 433 is tilted; the front end portion 432 abuts against the connecting screw 421 .

[0042] The clamping assembly 43 includes a front end point 434 that contacts the workpiece 6 to be processed, and the movable blade 41 includes an entry point 411 that contacts the workpiece 6 to be processed when shearing the workpiece 6 to be processed. In the first state, the distance between the entry point 411 and the front end point 434 is greater than the distance between the entry point 411 and the front end point 434 in the second state.

[0043] Furthermore, the line from the entry point 411 to the rotation center of the moving blade is defined as the lever arm length (not shown), and the lever arm length is no more than 65 mm. Compared with the lever arm length of a traditional moving blade, the torque of the moving blade 41 can be reduced, and the torque of structures such as the swing tooth 40 and the transmission assembly 3 can be reduced, thereby improving the structural strength of the shearing device 100.

[0044] After the workpiece 6 to be processed is placed on the fixed blade 41, the workpiece 6 to be processed moves inward to abut the rear end 433 and drives the clamping assembly 43 to rotate, the front end 432 rotates upward and the rear end 433 rotates downward, and the clamping assembly 43 fixes the workpiece 6 to be processed to the shearing body 4, so that the movable blade 41 can shear the workpiece 6 to be processed.

[0045] In this embodiment, two fixed blades 42 are provided, and the two fixed blades 42 are connected by the connecting screws 421. Two clamping assemblies 43 are provided, and the two clamping assemblies 43 are respectively located on the outsides of the two fixed blades 42; it can be imagined that the fixed blade 42 and the clamping assembly 43 can also be set as one.

[0046] See also Figure 1 and Figure 2 As shown, the housing 1 includes a switch 10 at the front end thereof, a hand guard 11 located outside the switch 10, and a foot plate 12 located at the rear end of the motor assembly 2. The foot plate 12 is detachably mounted with a battery pack 5, and the battery pack 5 is used to provide energy to the shearing device 100. The switch 10 is used to control the start and stop of the shearing device 100. When the operator pulls the switch 10, the battery pack 5 supplies power to the motor assembly 2, and the motor assembly 2 drives the transmission assembly 3, and the transmission assembly 3 drives the swinging tooth 40 to rotate, and the swinging tooth 40 drives the movable blade 41 to rotate relative to the fixed blade 42 to achieve the shearing action.

[0047] The switch 10 is accommodated inside the hand guard 11 . The hand guard 11 protects the operator's fingers and prevents the switch 10 from being accidentally touched, thereby improving safety.

[0048] In this embodiment, the shearing body 4 includes a clamping assembly 43 movably mounted on the fixed blade 42, and the clamping assembly 43 has a first state in which the workpiece 6 to be processed is not clamped and a second state in which the workpiece 6 to be processed is clamped. When the workpiece 6 to be processed is switched from the first state to the second state, the workpiece 6 to be processed drives the clamping assembly 43 to move. The clamping assembly 43 can automatically fix the workpiece 6 to be processed after it is placed, so that the workpiece 6 to be processed will not slide during the shearing process, which facilitates the shearing operation.

[0049] The present invention is not limited to the above specific embodiments. A person skilled in the art can easily understand that there are many alternatives to the shearing device of the present invention without departing from the principle and scope of the present invention. The protection scope of the present invention shall be subject to the content of the claims.

Claims

1. A shearing device, suitable for shearing a workpiece to be processed, comprising a housing, a motor assembly housed in the housing, a transmission assembly connected to the axial front end of the motor assembly, and a shearing body mounted to the axial front end of the housing, wherein the shearing body comprises a head shell disposed at the front end of the housing, a fixed blade fixed to the head shell, and a movable blade driven by the transmission assembly, wherein the movable blade rotates relative to the fixed blade to achieve a shearing action; characterized in that: The shearing body includes a clamping assembly movably mounted on the fixed blade, the clamping assembly has a first state in which the workpiece to be processed is not clamped and a second state in which the workpiece to be processed is clamped. When switching from the first state to the second state, the workpiece to be processed drives the clamping assembly to move.

2. The shearing device according to claim 1, characterized in that: The clamping assembly includes a front end point that contacts the workpiece to be processed, and the movable blade includes an entry point that contacts the workpiece to be processed when shearing the workpiece to be processed; in the first state, the distance between the entry point and the front end point is greater than the distance between the entry point and the front end point in the second state.

3. The shearing device according to claim 1, characterized in that: The shear body includes a fixing screw connecting the fixed blade and the clamping assembly, and the clamping assembly pivots around a center line of the fixing screw to switch between the first state and the second state.

4. The shearing device according to claim 3, characterized in that: The clamping assembly includes a front end portion located at the front end of the fixing screw and a rear end portion located at the rear end of the fixing screw, and the length of the front end portion is greater than the length of the rear end portion.

5. The shearing device according to claim 4, characterized in that: A connecting screw is provided at the front end of the fixed blade, and the connecting screw abuts against the front end portion to limit the clamping assembly from rotating downward.

6. The shearing device according to claim 5, characterized in that: The center of gravity of the clamping assembly is located at the front end of the fixing screw, and before the workpiece to be processed is placed in the fixed blade, the front end abuts against the connecting screw.

7. The shearing device according to claim 6, characterized in that: After the workpiece to be processed is placed in the fixed blade, the workpiece to be processed abuts against the rear end portion to rotate the clamping assembly, and the front end portion fixes the workpiece to be processed on the fixed blade.

8. The shearing device according to claim 4, characterized in that: The front end portion and the rear end portion are integrally formed, and the front end portion and the rear end portion are in an arc shape.

9. The shearing device according to claim 5, characterized in that: There are two fixed blades, which are connected by the connecting screws; there are two clamping assemblies, which are respectively located on the outsides of the two fixed blades.

10. The shearing device according to claim 2, characterized in that: The line from the entry point to the rotation center of the movable blade is the lever arm length, and the lever arm length is no more than 65 mm.

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