CN116810725A - Electric crimping tool - Google Patents
Electric crimping tool Download PDFInfo
- Publication number
- CN116810725A CN116810725A CN202310864726.9A CN202310864726A CN116810725A CN 116810725 A CN116810725 A CN 116810725A CN 202310864726 A CN202310864726 A CN 202310864726A CN 116810725 A CN116810725 A CN 116810725A
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- China
- Prior art keywords
- push rod
- screw rod
- mounting
- movable sleeve
- crimping tool
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- 238000002788 crimping Methods 0.000 title claims abstract description 47
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 230000006698 induction Effects 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 abstract description 6
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- -1 silt Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/042—Hand tools for crimping
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Transmission Devices (AREA)
Abstract
The invention belongs to the technical field of electric tools, and particularly relates to an electric crimping tool. Comprising the following steps: a housing; the working mechanism is provided with a pressing joint; the driving mechanism is used for driving the dynamic pressure joint to perform operation; the control mechanism is used for controlling the driving mechanism to work and is provided with a power supply and a control board; wherein the driving mechanism comprises: the roller assembly comprises a roller acting on the pressure joint and a roller seat for mounting the roller; the push rod assembly is used for driving the roller seat to move and comprises: the screw rod is rotatably arranged in the shell; the push rod is movably arranged at the outer side of the end part of the screw rod, and the end part of the push rod is fixed with the roller seat; the guide sleeve is sleeved on the peripheries of the screw rod and the push rod; the push rod can drive the roller seat to move in the rotating process of the screw rod. The guide sleeve is sleeved on the periphery of the screw rod, and a relatively airtight space is formed in the guide sleeve on the peripheral surface, so that dust can be prevented from entering and affecting the screw rod, and the screw rod is protected.
Description
Technical Field
The invention belongs to the technical field of electric tools, and particularly relates to an electric crimping tool.
Background
The electric tool is a tool which adopts a power supply to supply power and drives a working head to work through a transmission mechanism. In construction operations such as pipelines and electric power, different functions can be realized by providing different working heads, such as an electric crimping tool, an electric pipe expanding tool, an electric shearing tool and the like. Taking an electric crimping tool as an example, the electric crimping tool generally comprises a power supply, a motor driving mechanism and a crimping head, wherein the power supply supplies power to the motor driving mechanism and controls the motor driving mechanism to start so as to drive the crimping head to crimp a pipeline.
The existing electric crimping tool is as disclosed in the prior invention patent CN104540644B, and drives the working head by taking the screw rod structure as a driving mechanism, but impurities such as silt, dust and the like easily enter and adhere in a thread groove on the surface of the screw rod in the use process due to the exposed design of the screw rod, so that the screw rod is worn and abnormal, even is blocked in the working process, and the transmission precision and the service life between the screw rod and the screw rod nut are seriously influenced.
Disclosure of Invention
In order to solve the above problems, the present invention provides an electric crimping tool in which a screw is installed inside a housing to prevent dust from entering.
The invention adopts the following technical scheme:
an electric crimping tool for crimping a workpiece, having the feature of comprising: a housing; the working mechanism is provided with a pressing joint; the driving mechanism is used for driving the press joint to operate; the control mechanism is used for controlling the driving mechanism to work and is provided with a power supply and a control board; wherein the driving mechanism has: the roller assembly comprises a roller acting on the pressure joint and a roller seat for mounting the roller; the push rod assembly is used for driving the roller seat to move and comprises: the screw rod is rotatably arranged in the shell; the push rod is movably arranged at the outer side of the end part of the screw rod, and the end part of the push rod is fixed with the roller seat; the guide sleeve is sleeved on the peripheries of the screw rod and the push rod; the push rod can drive the roller seat to move in the rotating process of the screw rod.
The electric crimping tool provided by the invention is characterized in that one end of the push rod, which is far away from the roller seat, is provided with a movable sleeve in a split mode, and the middle part of the movable sleeve is provided with a through hole for the screw rod to pass through; one end of the through hole, which is close to the push rod, is provided with an action surface matched with the end surface of the push rod.
The electric crimping tool provided by the invention is characterized in that a clamping groove is formed in one side of the through hole, which is positioned on the acting surface, and a clamping ring is arranged in the clamping groove and is used for connecting the movable sleeve with the push rod; or, a clamping hole is formed in one side of the acting surface, and a clamping pin is arranged in the clamping hole and used for connecting the movable sleeve with the push rod.
The electric crimping tool provided by the invention is characterized in that a movable sleeve is integrally formed at one end of the push rod, which is far away from the roller seat, and a through hole for the screw rod to pass through is formed in the middle of the movable sleeve.
The electric crimping tool provided by the invention is characterized in that the push rod assembly is also provided with a guide sleeve sleeved on the periphery of the screw rod, a gap for the push rod and the movable sleeve to move is formed between the inner wall of the guide sleeve and the outer wall of the screw rod, the inner wall of the guide sleeve is provided with a plurality of sliding grooves, and the periphery of the movable sleeve is provided with a plurality of sliding strips matched with the sliding grooves; the surface of the screw rod is provided with a thread section, the inner wall of the through hole is provided with a thread matching part, and a ball is arranged between the thread matching part and the thread section; the movable sleeve is provided with a mounting hole, and a reverser is arranged in the mounting hole.
In the electric crimping tool provided by the invention, the driving mechanism is further provided with a driving assembly for driving the screw rod to rotate, and the driving assembly comprises: the power supply is used for providing power, has the output shaft, and the reduction gear is installed on the output shaft to contain: the planet carrier is arranged in the shell, one end of the planet carrier is used for being connected with the output shaft, the other end of the planet carrier is used for being provided with the screw rod, one end of the shell, which faces the screw rod, is provided with a mounting groove, and a thrust needle bearing is arranged in the mounting groove.
In the electric crimping tool set forth in the present invention, there is also a feature in which the power source is a brushless motor.
In the electric crimping tool according to the present invention, there is also a feature in that one end of the screw located inside the push rod is provided with a guide member through a fixing member.
In the electric crimping tool according to the present invention, the driving mechanism further has a sensing assembly including: the induction magnet is installed on the roller seat, the sensor is used for sensing the position of the induction magnet and transmitting signals to control the power source to work, the induction magnet is provided with an initial zero position, the power source is firstly reversed when started, and the power source is positively rotated to drive the push rod to move towards the roller seat until the sensor senses that the induction magnet is positioned at the initial zero position.
The electric crimping tool provided by the invention is characterized in that the working mechanism is further provided with a mounting seat, one end of the mounting seat is positioned in the shell and is provided with the roller seat, the other end of the mounting seat extends out of the shell to be provided with the crimping head, one end of the mounting seat positioned in the shell is further provided with a mounting section for mounting the driving mechanism, and the sensor is mounted on the mounting seat.
The actions and effects of the invention
According to the electric crimping tool, the screw rod is arranged in the shell, and the push rod and the guide sleeve are sleeved on the periphery of the screw rod, so that a relatively airtight space is formed in the guide sleeve on the peripheral surface, dust can be prevented from entering and affecting the screw rod, and the screw rod is protected.
Drawings
Fig. 1 is a structural diagram of an electric crimping tool according to embodiment 1 of the present invention.
Fig. 2 is a structural view of the electric crimping tool of embodiment 1 of the present invention with a part of the housing removed.
Fig. 3 is a sectional view showing a mounting structure of a mounting base and a driving mechanism according to embodiment 1 of the present invention.
FIG. 4 is a schematic view of the structure of the movable sleeve according to embodiment 1 of the present invention.
Fig. 5 is a sectional view of the movable sleeve of embodiment 1 of the present invention.
Fig. 6 is a partial enlarged view at a of fig. 3.
Fig. 7 is a partial enlarged view at B of fig. 3.
Fig. 8 is a partial enlarged view at C of fig. 3.
Fig. 9 is a schematic view of a roller seat mounting structure according to embodiment 1 of the present invention.
Fig. 10 is a schematic cross-sectional view of a push rod and movable sleeve mounting structure according to embodiment 2 of the present invention.
Reference numerals: the electric crimping tool 100, the housing 10, the working mechanism 20, the crimping head 21, the holding jaw 211, the recess 212, the mount base 22, the mount section 221, the mount recess 222, the driving mechanism 30, the roller 31, the roller base 32, the screw 321, the screw 33, the screw section 331, the push rod 34, the connector 341, the boss structure 342, the movable sleeve 35, the through hole 351, the mounting groove 352, the working face 353, the spiral groove 354, the mounting hole 355, the reverser 356, the clip groove 357, the slide 358, the latch 359, the guide sleeve 36, the slide groove 361, the collar 37, the guide 38, the clip spring 381, the power source 40, the control board 41, the sensorless brushless motor 51, the output shaft 511, the decelerator 52, the housing 521, the carrier 522, the planetary gear 523, the mount groove 524, the annular mount 525, the thrust needle bearing 53, the needle 531, the upper mount 532a, the lower mount 532b, the ball bearing 54, the bearing washer 55, the sensing magnet 61, the sensor 62, and the screw 621.
Detailed Description
In order to make the technical means, creation features, achievement of the purposes and effects of the present invention easy to understand, the electric crimping tool of the present invention is specifically described below with reference to the embodiments and the accompanying drawings.
Example 1 ]
Fig. 1 is a structural diagram of an electric crimping tool according to embodiment 1 of the present invention.
Fig. 2 is a structural view of the electric crimping tool of embodiment 1 of the present invention with a part of the housing removed.
As shown in fig. 1 and 2, the electric crimping tool 100 includes at least a housing 10, a working mechanism 20 that acts on a workpiece (e.g., a pipe) and crimps the workpiece, a driving mechanism 30 that drives the working mechanism 20, a control mechanism that controls the driving mechanism 30 to operate, and a switching mechanism that has a structure such as a power source 40 and a control board 41 for supplying power, and the like, and the switching mechanism has a button 71 and a switching element 72 provided on the housing 10, and the switching element 72 is electrically connected to the control board 41. The power source 40 is detachably mounted at the bottom of the housing 10, the control board 41 and the driving mechanism 30 are mounted inside the housing 10, and the working mechanism 20 is located at the front end of the housing 10. The working mechanism 20 has a working head (may also be referred to as a crimping head 21) and a mounting base 22, the crimping head 21 has a pair of symmetrically arranged clamping jaws 211, a notch 212 for clamping a workpiece is formed at the front end of the clamping jaws 211, and the pair of clamping jaws 211 can rotate under the drive of the driving mechanism 30 so as to crimp the workpiece in the notch 212; the rear end of the mounting seat 22 is positioned in the shell 10 and is provided with a mounting section 221 for mounting the driving mechanism 30, and the front end extends out of the shell 10 and is detachably connected with the pressure joint 21, so that the working head can be conveniently detached and replaced.
Fig. 3 is a sectional view showing a mounting structure of a mounting base and a driving mechanism according to embodiment 1 of the present invention.
Fig. 4 is a schematic view of a roller seat mounting structure according to embodiment 1 of the present invention.
FIG. 5 is a schematic view of the structure of the movable sleeve according to embodiment 1 of the present invention.
Fig. 6 is a sectional view of the movable sleeve of embodiment 1 of the present invention.
Fig. 7 is a partial enlarged view at a of fig. 3.
As shown in fig. 3, the driving mechanism 30 includes a roller assembly, a push rod assembly for driving the roller assembly to move, a driving assembly for driving the push rod assembly, and a sensing assembly. The roller assembly has a pair of rollers 31 acting on the press joint 21 and a roller seat 32 for mounting the rollers 31. The push rod assembly has a lead screw 33, a push rod 34, a movable sleeve 35 (also referred to as a lead screw nut) and a guide sleeve 36. One end of the screw rod 33 is connected with the driving assembly and rotates under the driving of the driving assembly, the screw rod 33 is provided with a threaded section 331 at the outer side Zhou Chengxing, the movable sleeve 35 is sleeved on the threaded section 331, and the movable sleeve 35 moves along the screw rod 33 under the action of the threaded section 331 in the rotating process of the screw rod 33.
The movable sleeve 35 is disposed at one end of the push rod 34, and the two may be integrally disposed or separately disposed, and in this embodiment, the detailed description will be given by taking the separately disposed example: the push rod 34 is of a structure with one end sealed and the other end opened, and a connector 341 is formed at the sealed end, as shown in fig. 4, the connector 341 is fixed with the roller seat 32 through a screw 321, so that the connection between the push rod 34 and the roller seat 32 is realized; the push rod 34 is hollow and sleeved outside one end of the screw rod 33 far away from the driving assembly; as shown in fig. 7, the open end is formed with a boss structure 342, the push rod 34 is connected with the movable sleeve 35 through the boss structure 342, the movable sleeve 35 is disposed at the end of the push rod 34 (i.e. the movable sleeve 35 is located at the end of the push rod 34 away from the roller seat 32), and the push rod 34 can drive the roller seat 32 to move during the rotation of the screw rod 33, so that the roller 31 pushes the dynamic pressure joint 21 to work. The roller 31 will contact with the inner end of the clamping jaw 211 during the moving process, and the clamping jaw 211 will rotate with the central rotating shaft as the shaft under the thrust of the roller 31, so that the press joint 21 is closed and the workpiece is pressed and connected. Since the structure and principle of the roller driving dynamic pressure joint are the prior art, the description will not be made here. The guide sleeve 36 is arranged outside the screw 33, the push rod 34 and the movable sleeve 35, and the end part of the guide sleeve is connected with the driving assembly. One end of the guide sleeve 36, which is close to the roller seat 32, is in threaded connection with the mounting section 221 of the mounting seat 22, the guide sleeve 36 is of a hollow structure, the screw rod 33 and the movable sleeve 35 are sealed inside the guide sleeve 36, a gap for the push rod 34 and the movable sleeve 35 to move is formed between the inner wall of the guide sleeve 36 and the outer wall of the screw rod 33, so that a relative airtight space is formed among the push rod 34, the movable sleeve 35 and the guide sleeve 36, the screw rod 33 is positioned in the airtight space, further sealing protection is formed for the screw rod 33, and dust and impurities are prevented from entering to influence the screw rod precision.
As shown in fig. 5 and 6, a through hole 351 through which the screw rod 33 passes is formed in the middle of the movable sleeve 35, an installation groove 352 is formed at one end of the through hole 351 near the push rod 34, an annular acting surface 353 is formed at the bottom of the installation groove 352, and the acting surface 353 abuts against the end surface of the opening end of the push rod 34, and the acting surface 353 and the end surface interact with each other, so that the movable sleeve 35 can push the push rod 34 to move towards the roller seat 32 under the action of the screw rod 33. As shown in fig. 7, the specific installation structure of the movable sleeve 35 and the push rod 34 is: a locking groove 357 is provided on a side of the through hole 351 located on the working surface 353, and a collar 37 is installed in the locking groove 357, and the movable sleeve 35 is connected to the push rod 34 via the collar 37. The push rod 34 has two moving directions, one is a direction for pushing the roller seat 32 to move toward the press joint 21, and is called a pushing direction; the other is the direction opposite to the advancing direction, called the retracting direction. As shown in fig. 7, the push rod 34 moves towards the pushing direction, and the pushing is realized by the action surface 353 of the movable sleeve 35 acting on the end surface of the opening end of the push rod 34, so that the push rod has the characteristic of large bearing capacity, and is convenient for bearing large pushing force during working; the push rod 34 moves towards the retracting direction, and the end structure of the movable sleeve 35 and the retainer ring 37 act on the boss structure 342 to realize the retracting, so that the stress is smaller, and the service life of the retainer ring 37 is not easily influenced.
As shown in fig. 3 and 6, the inner wall of the through hole 351 is provided with a screw fitting portion (i.e., a screw groove 354) which is fitted with the screw thread section 331 on the surface of the screw 33, a ball is provided between the screw fitting portion and the screw thread section 331, and a mounting hole 355 is provided on the movable sleeve 35 for mounting the reverser 356, and an internal circulation ball screw structure is formed in combination with the screw 33. The periphery of the movable sleeve 35 is also provided with a slide bar 358 (also can be of a spline tooth structure), and the inner wall of the guide sleeve 36 is provided with a chute 361 (also can be of a spline groove structure matched with the spline tooth) matched with the slide bar 358, so that the movable sleeve 35 can axially move smoothly along the inner wall of the guide sleeve 36, and better guiding and stabilizing effects are achieved. As shown in fig. 3, the end of the screw rod 33 located inside the push rod 34 is further sleeved with a guide piece 38, the guide piece 38 is fixed on the screw rod 33 through a clamp spring 381, the guide piece 38 is located between the top end of the screw rod 33 and the inner wall of the push rod 34, so that the position of the screw rod 33 can be more stable, the push rod 34 can be moved more stably by combining the guide sleeve 36, the travel of the movable sleeve 35 can be limited, the movable sleeve 35 is prevented from being separated from the screw rod 33, and the structure is more stable.
Fig. 8 is a partial enlarged view at B of fig. 3.
As shown in fig. 3 and 8, the driving assembly has a power source (a brushless motor 51 in this embodiment) for supplying power and a decelerator 52, the brushless motor 51 has reduced wiring layout and parts compared to a conventional induction motor (with hall elements), and in a high-power electric tool, since heat easily affects electric components, a brushless motor having a longer life is employed. The brushless non-inductance motor 51 includes an output shaft 511, a decelerator 52 is mounted on the output shaft 511, and one end of the lead screw 33 remote from the push rod 34 is mounted on an output end of the decelerator 52. The concrete installation structure of the screw 33 and the speed reducer 52 is as follows: the speed reducer 52 comprises a housing 521 and a three-stage planetary structure, wherein the housing 521 is connected to one end of the guide sleeve 36 towards the periphery of one end of the rolling seat 32 through threads, the three-stage planetary structure is installed in the housing 521 and comprises a planetary frame 522 and a planetary gear 523, one end of the planetary frame 522 is connected with the output shaft 511, and the other end of the planetary frame 522 is used for installing the screw 33. The shell 521 is provided with mounting groove 524 towards the one end of lead screw 33, is equipped with thrust bearing 53 in this mounting groove 524, and the inner wall of shell 521 is located one side of mounting groove 524 and still is equipped with an annular installation position 525, and annular installation position 525 is for being equipped with ball bearing 54 for lead screw 33 keeps still unaffected when rotating, and thrust bearing 53 and ball bearing 54's middle part all are equipped with the through-hole that supplies lead screw 33 to pass.
The needle bearing 53 is installed between the housing 521 and the screw 33 through the bearing washer 55, the needle bearing 53 has a plurality of circumferentially arranged needle rollers 531, a planar upper mounting frame 532a and a planar lower mounting frame 532b are respectively arranged above and below the needle rollers 531, the axis of the needle rollers 531 is perpendicular to the axis of the screw 33, and the planes of the end faces of the upper mounting frame 532a and the end faces of the lower mounting frame 532b are also perpendicular to the axis of the screw. As shown in fig. 8, the outer side surface of the lower mounting bracket 532b is attached to the end surface of the mounting groove 524, the outer side surface of the upper mounting bracket 532a is attached to the end surface of the bearing washer 55, and the screw 33 is provided with a flange 332 engaged with the bearing washer 55. The flat needle bearing 53 is selected here, so that stable installation can be formed between the screw 33 and the housing 521 by matching with the ball bearing 54, and recoil force in the axial direction of the screw 33 can be counteracted, so that the screw 33 is stressed more stably, and the screw 33 is protected.
Fig. 9 is a partial enlarged view at C of fig. 3.
As shown in fig. 3, an inductive component is disposed between the roller mount 32 and the mount 22. As shown in fig. 9, the sensing assembly has a sensing magnet 61 and a sensor 62, the sensing magnet 61 is mounted on the roller seat 32, the sensor 62 is a hall sensing member for sensing the position of the sensing magnet and transmitting a signal to the control board 41, and the control board 41 controls the power source to operate. The sensor 62 is installed on the installation seat 22, as shown in fig. 7, one side of the installation seat 22 is provided with an installation notch 222, the sensor 62 is fixed in the installation notch 222 through a screw 621, as shown in fig. 2, part of the sensor 62 is exposed outside the whole machine body, and the disassembly and the replacement are convenient. The induction magnet 61 has initial zero position, and when induction magnet 61 is located initial zero position, the crimp head is open state, and when the instrument is at the start-up, the motor reverse rotation makes roller assembly get back initial zero position earlier, and the positive rotation control gyro wheel stretches out again, makes the crimp head closed gradually, realizes the crimping to the work piece.
The working principle of the embodiment is as follows:
the button 71 is pressed, the tool is started, the motor firstly rotates reversely to drive the screw rod 33 to rotate reversely, the push rod 34 drives the roller assembly to retract to an initial zero position, the sensor 62 senses that the induction magnet 61 returns to the initial zero position and then transmits signals to the control board 41, the control board 41 controls the motor to rotate positively, the screw rod rotates positively, the push rod 34 drives the roller assembly to move towards the direction where the press joint 21 is located, and the roller 31 contacts and drives the clamping jaw 211 of the press joint 21 to rotate, so that press joint is carried out on a workpiece.
Example 2 ]
Fig. 10 is a schematic cross-sectional view of a push rod and movable sleeve mounting structure according to embodiment 2 of the present invention.
The present embodiment is basically the same as the above embodiment 1, except that the connecting structure between the open end of the push rod 33 and the movable sleeve 35 is that the movable sleeve 35 is provided with a through hole 351 for the screw rod 33 to pass through in the middle part as in the above embodiment 1, one end of the through hole 351 near the push rod 34 is provided with an installation groove, the bottom of the installation groove forms an annular acting surface 353, the acting surface 353 abuts against the end surface of the open end of the push rod 34, and the two interact with each other, so that the movable sleeve 35 can push the push rod 34 to move towards the roller seat 32 under the action of the screw rod 33. The open end of the push rod 34 is also provided with an outwardly protruding boss structure 342, as shown in fig. 10, and the specific installation structure of the movable sleeve 35 and the push rod 34 in this embodiment is as follows: a pin 359 is provided on one side of the through hole 351 located on the working surface 353, and one end of the pin 359 is inserted into the boss structure 342 at the opening end of the push rod 34, and the movable sleeve 35 is connected to the push rod 34 by the pin 359. The push rod 34 has two moving directions, one is a direction for pushing the roller seat 32 to move toward the press joint 21, and is called a pushing direction; the other is the direction opposite to the advancing direction, called the retracting direction. The push rod 34 moves towards the pushing direction, and pushing is realized by acting the acting surface 353 of the movable sleeve 35 on the end surface of the opening end of the push rod 34; the movement of the push rod 34 in the retracting direction is by means of the latch 359 on the movable sleeve 35 acting at the boss 342 to effect the retraction.
Example action and effect:
according to the electric crimping tool, the screw rod is arranged in the shell, and the push rod 34 and the guide sleeve are sleeved on the periphery of the screw rod 33, so that a relatively airtight space is formed in the guide sleeve on the peripheral surface, dust can be prevented from entering and affecting the screw rod 33, and the screw rod 33 is protected.
Further, since the hardness required in the actual operation of the push rod 34 is smaller than that of the movable sleeve 35, the push rod 34 and the movable sleeve 35 are separately arranged in the above embodiment, and the materials with different hardness are selected, so that the cost and the requirement can be reduced to a certain extent.
Further, since the power source adopts the brushless motor 51, the circuit layout and parts are reduced compared with the conventional induction motor (with hall element), and in the high-power electric tool, since heat easily affects the electric elements, the brushless motor has a longer life.
Furthermore, since the thrust needle bearing 53 is disposed between the screw 33 and the reducer housing 521, and the axis of the needle 531 of the thrust needle bearing 53, the end face of the upper mounting bracket 532a, and the plane of the end face of the lower mounting bracket 532b are all perpendicular to the axis of the screw 33, not only can stable installation be formed between the screw 33 and the housing 521 by matching with the ball bearing 54, but also the recoil force in the axial direction of the screw 33 can be counteracted, so that the stress of the screw 33 is more stable, and protection is formed for the screw 33.
The above examples are only for illustrating the specific embodiments of the present invention, and the present invention is not limited to the description scope of the above examples. For example, in the case provided in the above embodiment, the push rod and the movable sleeve are provided separately, and in a practical case, the push rod and the movable sleeve may be provided integrally.
Claims (10)
1. An electric crimping tool for crimping a workpiece, comprising:
a housing;
the working mechanism is provided with a pressing joint;
the driving mechanism is used for driving the press joint to operate; and
the control mechanism is used for controlling the driving mechanism to work and is provided with a power supply and a control board;
wherein the driving mechanism has:
the roller assembly comprises a roller acting on the pressure joint and a roller seat for mounting the roller;
the push rod assembly is used for driving the roller seat to move and comprises:
the screw rod is rotatably arranged in the shell;
the push rod is movably arranged at the outer side of the end part of the screw rod, and the end part of the push rod is fixed with the roller seat; and
the guide sleeve is sleeved on the peripheries of the screw rod and the push rod;
the push rod can drive the roller seat to move in the rotating process of the screw rod.
2. The power crimping tool as claimed in claim 1, wherein,
wherein, one end of the push rod far away from the roller seat is separately provided with a movable sleeve, and the middle part of the movable sleeve is provided with a through hole for the screw rod to pass through; one end of the through hole, which is close to the push rod, is provided with an action surface matched with the end surface of the push rod.
3. The electric crimping tool as claimed in claim 2, wherein,
wherein, a clamping groove is arranged on one side of the through hole, which is positioned on the acting surface, a clamping ring is arranged in the clamping groove, and the movable sleeve is connected with the push rod through the clamping ring;
or, a clamping hole is formed in one side of the acting surface, and a clamping pin is arranged in the clamping hole and used for connecting the movable sleeve with the push rod.
4. The power crimping tool as claimed in claim 1, wherein,
the movable sleeve is integrally formed at one end of the push rod, which is far away from the roller seat, and a through hole for the screw rod to pass through is formed in the middle of the movable sleeve.
5. The power crimping tool as claimed in any one of claims 2 to 4, wherein,
wherein a gap for the push rod and the movable sleeve to move is formed between the inner wall of the guide sleeve and the outer wall of the screw rod,
the inner wall of the guide sleeve is provided with a plurality of sliding grooves, and the periphery of the movable sleeve is provided with a plurality of sliding strips matched with the sliding grooves;
the surface of the screw rod is provided with a thread section, the inner wall of the through hole is provided with a thread matching part, and a ball is arranged between the thread matching part and the thread section; the movable sleeve is provided with a mounting hole, and a reverser is arranged in the mounting hole.
6. The power crimping tool as claimed in any one of claims 1 to 4, wherein,
wherein, actuating mechanism still has drive assembly for the drive the lead screw rotates, and this drive assembly contains:
a power source for providing power, having an output shaft,
a speed reducer mounted on the output shaft and comprising:
the shell body is provided with a plurality of grooves,
the planet carrier is arranged in the shell, one end of the planet carrier is used for being connected with the output shaft, the other end of the planet carrier is used for being provided with the screw rod,
one end of the shell, which faces the screw rod, is provided with a mounting groove, and a thrust needle bearing is arranged in the mounting groove.
7. The power crimping tool as claimed in claim 6, wherein,
wherein, the power source is brushless motor.
8. The power crimping tool as claimed in any one of claims 2 to 4, wherein,
wherein, the lead screw is located the inside one end of push rod is provided with the guide piece through the mounting.
9. The power crimping tool as claimed in claim 6, wherein,
wherein, actuating mechanism still has the response subassembly, and this response subassembly contains:
an induction magnet which is arranged on the roller seat,
the sensor is used for sensing the position of the sensing magnet and transmitting a signal to control the power source to work,
the induction magnet has an initial zero position, the power source is firstly reversed when started until the sensor senses that the induction magnet is positioned at the initial zero position, and the power source is positively rotated to drive the push rod to move towards the roller seat.
10. The power crimping tool as claimed in claim 9, wherein,
wherein the working mechanism is also provided with a mounting seat, one end of the mounting seat is positioned in the shell and is provided with the roller seat, the other end extends out of the shell and is provided with the pressure joint,
one end of the mounting seat, which is positioned in the shell, is also provided with a mounting section for mounting the driving mechanism,
the sensor is mounted on the mounting base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310864726.9A CN116810725A (en) | 2023-07-13 | 2023-07-13 | Electric crimping tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310864726.9A CN116810725A (en) | 2023-07-13 | 2023-07-13 | Electric crimping tool |
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| Publication Number | Publication Date |
|---|---|
| CN116810725A true CN116810725A (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310864726.9A Pending CN116810725A (en) | 2023-07-13 | 2023-07-13 | Electric crimping tool |
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| Country | Link |
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| CN (1) | CN116810725A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1025732S1 (en) * | 2023-08-03 | 2024-05-07 | Qing Dai | Hydraulic tool |
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2023
- 2023-07-13 CN CN202310864726.9A patent/CN116810725A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD1025732S1 (en) * | 2023-08-03 | 2024-05-07 | Qing Dai | Hydraulic tool |
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