Clamp head device and hand-held tool

Abstract

The utility model belongs to the technical field of electric tools, and particularly relates to a tong head device and a handheld tool. The handheld tool comprises a tong head device and a driving device, wherein the tong head device comprises a tong head mounting component; the first plier body and the second plier body are rotationally arranged on the plier head mounting component, and the front ends of the first plier body and the second plier body form a plier opening; the synchronous rotating mechanism is used for realizing synchronous rotation of the first clamp body and the second clamp body; wherein the synchronous rotating mechanism comprises a tooth-shaped sliding block, a first tooth part, a second tooth part, a third tooth part and a fourth tooth part, and the tooth-shaped sliding block is arranged on the tong head mounting component in a sliding manner; and the second tooth part is meshed with the tooth-shaped sliding block. The first plier body and the second plier body are meshed on the two sides of the tooth-shaped sliding block through the first tooth part and the second tooth part respectively, so that synchronous opening or closing of the first plier body and the second plier body is achieved, and the synchronous plier has the advantages of being good in synchronism, more symmetrical and stable in stress and the like.

Description

Technical Field

[0001] This utility model belongs to the field of power tool technology, specifically referring to a pliers head device and a handheld tool. Background Technology

[0002] Chinese patent CN220660751U discloses an electric crimping tool, which includes a housing and a clamping head and a motor arranged from top to bottom within the housing. The upper end of the clamping head extends out of the housing, and the clamping head includes two opposing clamping bodies. The middle parts of the two clamping bodies are respectively hinged within the housing, and the clamping bodies are normally closed under the action of springs. In use, the operating handle must first be pressed, the workpiece placed into the clamping jaws, and then the power button pressed to start the motor in order to perform the crimping action on the workpiece.

[0003] The following problems exist: After the operating handle is pressed, one of the clamps is driven to rotate, and the other clamp is linked through the needle roller structure set between the two. However, the fit tolerance of the needle roller structure is relatively large, which makes the synchronization of the two clamps poor. This results in uneven force on the workpiece in the pre-clamping state or the pressing state, which affects the pressing quality of the workpiece, as well as the tool life and pressing accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a pliers device and handheld tool that is simple in structure, has good pliers head synchronization, is easy to operate and saves effort.

[0005] The purpose of this utility model is achieved as follows:

[0006] A pliers head device includes: a pliers head mounting component; a first pliers body and a second pliers body rotatably mounted on the pliers head mounting component, with the front ends of the first pliers body and the second pliers body forming jaws; and a synchronous rotation mechanism for realizing synchronous rotation of the first pliers body and the second pliers body; wherein the synchronous rotation mechanism includes: a toothed slider slidably mounted on the pliers head mounting component; a first tooth portion disposed on the first pliers body near the second pliers body and engaging with the toothed slider portion; and a second tooth portion disposed on the second pliers body near the first pliers body and engaging with the toothed slider portion.

[0007] The present invention further includes a synchronous rotation mechanism that also includes a slider reset component. The slider reset component abuts against the toothed slider and is used to drive the toothed slider to move so as to realize the automatic opening of the jaws.

[0008] The present invention further includes a first clamp body and a second clamp body, each comprising a clamp arm plate A, a toothed rocker arm, and a clamp arm plate B fixed to each other; the toothed rocker arm has a plurality of teeth for forming a first tooth or a second tooth; the two sides of the toothed slider are respectively provided with toothed grooves corresponding to the first tooth and the second tooth, and by rotating one of the toothed rocker arms, the linear movement of the toothed slider can be driven and the synchronous rotation of the other toothed rocker arm can be achieved.

[0009] The present invention is further provided in that the first clamp body and the second clamp body are both rotatably mounted in the clamp head mounting component by means of a cylindrical pin, the outer front end of the toothed rocker arm abuts against or is fitted on the cylindrical pin, and the inner front end of the toothed rocker arm is provided with a number of teeth, which are distributed circumferentially around the axis of the cylindrical pin.

[0010] The present invention is further provided in that the first clamp body and the second clamp body are both rotatably mounted in the clamp head mounting component by means of cylindrical pins, and a baffle is installed between the two cylindrical pins. The baffle is located on the side of the synchronous rotation mechanism near the jaws.

[0011] The present invention further includes an arc-shaped locking groove formed on the back end of the baffle for locking the cylindrical pin; a blocking boss extending along the width direction in the middle of the baffle is located in the gap between the first clamp body and the second clamp body and abuts against the clamp head mounting component.

[0012] The present invention further includes a plier head mounting component having plier head mounting plates respectively disposed on both sides of the first plier body and the second plier body, at least one of the plier head mounting plates having a strip-shaped groove, and at least one side of the toothed slider having a slider protrusion, the toothed slider moving linearly within the strip-shaped groove through the slider protrusion.

[0013] A handheld tool includes the aforementioned pliers head assembly and a drive mechanism for driving the pliers head assembly.

[0014] The present invention further includes a trigger device for manually driving the jaws to close. The trigger device includes: a trigger handle, rotatably disposed on one side of the rear end of the jaw mounting component, and having a handle portion for pressing with a finger and a latch portion; and an abutment portion disposed at the tail of the first jaw body and / or the second jaw body, and corresponding to the latch portion; pressing the handle portion of the trigger handle causes the latch portion to drive the jaws to close via the abutment portion.

[0015] This utility model further includes a driving device for driving the jaws to close, comprising a power mechanism for providing power and a driving mechanism connected to the output end of the power mechanism and acting on the first and second jaw bodies; the power mechanism has a motor, a reducer, and a screw, the motor is fixed to the jaw head mounting component via the reducer, the input end of the screw is connected to the reducer, and the other end of the screw is rotatably mounted on the jaw head mounting component via a screw support block; a slider reset component abuts between the toothed slider and the screw support block.

[0016] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0017] 1. The first clamp and the second clamp of this utility model are respectively engaged on both sides of the toothed slider by the first tooth and the second tooth, so as to realize the synchronous opening or closing of the first clamp and the second clamp, which has the advantages of good synchronization, more symmetrical force and stability.

[0018] 2. The baffle of this utility model can effectively prevent impurities from entering the synchronous rotation mechanism and the power mechanism, thereby further improving the service life of the tool.

[0019] 3. This utility model uses a slider reset component to drive the jaws of the first and second jaws to open automatically, so that the jaws are in a normally open state when not under force. Compared with a jaw head device with normally closed jaws, it eliminates the need for operators to manually press the wrench handle to open the jaws when placing or picking up workpieces, thereby reducing workload and improving processing efficiency. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of the first embodiment of the present invention.

[0021] Figure 2 This is an exploded view of the pliers head device of this utility model.

[0022] Figure 3 This is one of the cross-sectional views of the first embodiment of this utility model.

[0023] Figure 4 This is a second cross-sectional view of the first embodiment of this utility model.

[0024] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0025] Figure 6 This is a schematic diagram of the toothed slider of this utility model.

[0026] Figure 7 This is a schematic diagram of the structure of the baffle of this utility model.

[0027] Figure 8 yes Figure 4 A magnified view of a section at point B.

[0028] Figure 9 This is a schematic diagram of the screw structure of this utility model.

[0029] Figure 10 This is a schematic diagram of the control device of this utility model.

[0030] Figure 11 This is an exploded view of the trigger device of this utility model.

[0031] Figure 12 This is a schematic diagram of the pre-pressing structure of the crimping mold for installing terminals at the jaws of this utility model.

[0032] Figure 13 This is a schematic diagram of the structure of the clamp tightening mold installed at the jaws of this utility model.

[0033] Figure 14 This is a schematic diagram of the structure of the clamping mold installed at the jaws of this utility model.

[0034] The meaning of the labels in the diagram:

[0035] 1. Clamping head device; 2. Drive device; 3. Trigger device; 4. Control device;

[0036] 11. Clamp head mounting component; 111. Clamp head mounting plate; 1111. Strip groove; 1112. Strip hole; 1113. Strip guide groove; 1114. Fixing hole; 1114. First clamp body; 121. Clamp jaw; 122. Force receiving part; 13. Second clamp body; A131. Clamp arm plate; 132. Toothed rocker arm; B133. Clamp arm plate; 134. Fixing pin; 14. Synchronous rotation mechanism; 141. Toothed slider; 1411. Toothed groove; 1412. Slider protrusion; 142. First tooth; 143. Second tooth; 144. Slider reset component; 15. Cylindrical pin; 16. Baffle; 161. Arc-shaped locking groove; 162. Blocking boss.

[0037] Power mechanism 21; motor 211; reducer 212; reducer housing 2121; planetary gear set 2122; screw connection hole 2122A; gear ring 2123; reducer end cover 2124; screw 213; threaded section 2131; bearing abutment platform 2132; reducer connection section 2133; screw support block 214; thrust bearing 215; retaining ring 216;

[0038] Drive mechanism 22; Roller seat 221; Guide protrusion 2211; Roller 222;

[0039] Trigger handle 31; handle part 311; lever part 312; abutment part 32; trigger reset part 33; trigger shaft 34;

[0040] Start signal source 41; Stop signal source 42;

[0041] Mold 100; Cable 101; Terminal block 102; Pipe fitting 103; Pipe connector 104; Clamp 105. Detailed Implementation

[0042] The present invention will be further described below with reference to specific embodiments:

[0043] Example 1:

[0044] like Figure 1 As shown, a handheld tool includes a pliers head device 1, a drive device 2 for electrically driving the pliers head device 1, a trigger device 3 for manually driving the pliers head device 1, a control device 4 for controlling the drive device 2, and a power supply for supplying power to the drive device 2, wherein the power supply is preferably a lithium battery.

[0045] like Figure 2 As shown, the clamp head device 1 includes a clamp head mounting component 11, two cylindrical pins 15, and a first clamp body 12 and a second clamp body 13 rotatably mounted on the cylindrical pins 15. The first clamp body 12 and the second clamp body 13 are symmetrically arranged. Both the first clamp body 12 and the second clamp body 13 include a clamp arm plate A131, a toothed rocker arm 132, and a clamp arm plate B133 that are fixed to each other. The toothed rocker arm 132 is mounted between the clamp arm plate A131 and the clamp arm plate B133 by at least one fixing pin 134. The toothed rocker arm 132 is located in the rear half of the clamp arm plate A131 and the clamp arm plate B133 and forms a force-receiving part 122 for driving itself to rotate. The front ends of clamp arm plates A131 and B133 form clamp jaw portions 121. The two clamp jaw portions 121 of the first clamp body 12 and the second clamp body 13 together form a jaw. A mold 100 for processing workpieces is detachably installed inside the jaw. The molds 100 are designed in pairs and are respectively installed on the clamp jaw portions 121 by fasteners (screws, etc.). The mold 100 can be a terminal crimping mold, a pipe crimping mold, a shearing mold, a clamp tightening mold, a clamp removal mold, etc., and can be replaced according to the user's needs. In this embodiment, the mold 100 installed is a terminal crimping mold.

[0046] The plier head mounting component 11 has two parallel plier head mounting plates 111 located on both sides of the first plier body 12 and the second plier body 13, respectively. The plier head mounting plates 111 have cylindrical pin holes. The first plier body 12 and the second plier body 13 are rotatably mounted between the two plier head mounting plates 111 by cylindrical pins 15, and the two ends of the cylindrical pins 15 are respectively limited by retaining springs.

[0047] like Figure 3 , 4As shown, the pliers head device 1 also includes a synchronous rotation mechanism 14 disposed between the first pliers body 12 and the second pliers body 13. The synchronous rotation mechanism 14 includes a toothed slider 141 slidably disposed on the pliers head mounting component 11, a first tooth 142 disposed on the first pliers body 12 near the second pliers body 13, and a second tooth 143 disposed on the second pliers body 13 near the first pliers body 12.

[0048] Specifically, such as Figure 4 , 5 As shown in Figure 6, at least one clamp head mounting plate 111 has a strip groove 1111, which is located on the central axis of the two cylindrical pin holes.

[0049] The toothed slider 141 is a square block, the width of which is adapted to the width of the mounting space formed by the two clamp mounting plates 111. At least one side of the toothed slider 141 in the width direction is provided with a slider protrusion 1412, allowing the toothed slider 141 to move linearly within the strip groove 1111 via the slider protrusion 1412. Toothed groove portions 1411 are symmetrically arranged on both sides in the height direction of the toothed slider 141, each having a plurality of linearly arranged toothed grooves. In this embodiment, both clamp mounting plates 111 are provided with strip grooves 1111, and the toothed slider 141 has symmetrically arranged slider protrusions 1412 on both sides, resulting in a more uniform force distribution on the toothed slider 141.

[0050] The outer front end of the toothed rocker arm 132 abuts against the cylindrical pin 15 through an arc groove. The inner front end of the toothed rocker arm 132 is provided with several teeth, which are distributed circumferentially around the axis of the cylindrical pin 15. The rear end of the toothed rocker arm 132 is provided with a force-bearing part 122, which is an arc-shaped longitudinal extension surface.

[0051] The first toothed portion 142 is formed by several teeth at the front end of the toothed rocker arm 132 of the first clamp 12, and the second toothed portion 143 is formed by several teeth at the front end of the toothed rocker arm 132 of the second clamp 13. The first toothed portion 142 and the second toothed portion 143 are arranged in the same direction and respectively mesh with the toothed groove portion 1411 of the toothed slider 141, thereby realizing the synchronous opening or closing of the first clamp 12 and the second clamp 13, making the force more symmetrical and stable.

[0052] The front end of the toothed rocker arm 132 abuts against the cylindrical pin 15 to prevent deformation when the toothed rocker arm 132 rotates, thus ensuring the meshing effect with the toothed slider 141. In another embodiment, the outer side of the front end of the toothed rocker arm 132 can also be fitted onto the cylindrical pin 15 through a mounting hole to achieve the same effect.

[0053] In another embodiment, the synchronous rotation mechanism 14 further includes a slider reset member 144, which abuts against the toothed slider 141 and the jaw mounting component 11. The slider reset member 144 is preferably a spring, used to drive the toothed slider 141 to move towards the jaws to achieve automatic jaw opening. In this embodiment, the jaws are normally open under non-stressed conditions. Compared to a jaw device with normally closed jaws, this eliminates the need for operators to manually press the wrench handle to open the jaws when placing or removing workpieces, thereby reducing workload and improving processing efficiency.

[0054] like Figure 3 , 7 As shown, a baffle 16 is engaged between two cylindrical pins 15. The baffle 16 is located on the side of the synchronous rotation mechanism 14 near the jaws and between the first jaw 12 and the jaw arm plate A131 and jaw arm plate B133 of the second jaw 13. It is used to prevent impurities from entering the synchronous rotation mechanism 14, thereby improving its service life.

[0055] The baffle 16 is a strip-shaped component. The width of the baffle 16 is adapted to the gap between the clamp arm plate A131 and the clamp arm plate B133, and the height of the baffle 16 is adapted to the height of the clamp head device 1. Figure 3 As shown, in this embodiment, the two ends of the baffle 16 extend slightly beyond the first clamp body 12 and the second clamp body 13. The two ends of the baffle 16 are inclined to guide impurities to slide out of the clamp head device 1. The back end of the baffle 16 is respectively formed with arc-shaped locking grooves 161 for locking the cylindrical pin 15, which facilitates the fixing of the baffle 16. A blocking boss 162 extends from the middle of the baffle 16 along the width direction. The blocking boss is located in the gap between the first clamp body 12 and the second clamp body 13 and abuts against the clamp head mounting plate 111, thereby expanding the blocking area of ​​the baffle 16. The baffle 16 divides the mounting space formed by the two clamp head mounting plates 111 through the two clamp head mounting plates 111, the clamp arm plate A131 and the clamp arm plate B133, further reducing the risk of impurities entering the synchronous rotation mechanism 14 and the drive device 2.

[0056] like Figure 3 , 8 As shown, the drive device 2 includes a power mechanism 21 for providing power and a drive mechanism 22 connected to the output end of the power mechanism 21 and acting on the force receiving part 122. The drive mechanism 22 drives the jaws to close through the force receiving part 122.

[0057] Specifically, the power mechanism 21 has a motor 211, a reducer 212 and a screw 213. The reducer 212 has a reduction housing 2121. The motor 211 is fixed to one end of the reduction housing 2121 by screws. The other end of the reduction housing 2121 has a narrow mounting boss that extends into the tail of the two clamp head mounting plates 111 and is fixed by screws and nuts, so that the motor 211, the reducer 212, the clamp head mounting component 11, the first clamp body 12 and the second clamp body 13 form a fixed structure.

[0058] like Figure 3 As shown, the input end of the screw 213 is connected to the reducer 212, and the other end is rotatably mounted on the pliers mounting component 11 via the screw support block 214. Figure 5 As shown, the screw support block 214 in this embodiment is a square block, preferably made of copper or a copper alloy, with fixing protrusions extending from both sides. The clamp head mounting plate 111 has corresponding fixing holes 1114, and the screw support block 214 is fixed within the fixing holes 1114 via the fixing protrusions. A screw support hole is provided on the side of the screw support block 214 facing the screw 213. The outer end of the screw 213 is rotatably positioned within the screw support hole. When the screw 213 rotates, the screw support block 214 provides a support point to prevent the end of the screw 213 from shifting. Preferably, a bearing or slip ring can be provided between the screw 213 and the screw support hole to reduce rotational resistance.

[0059] In addition, such as Figure 5 As shown, the slider reset component 144 abuts between the toothed slider 141 and the screw support block 214. The screw support block 214 is provided with a spring mounting post, and the toothed slider 141 has a spring mounting hole. One end of the slider reset component 144 is fitted into the spring mounting post, and the other end abuts against the spring mounting hole, realizing the dual function of the screw support block 214.

[0060] like Figure 8 As shown, the reducer 212 includes a reduction housing 2121, a reduction end cover 2124, a gear ring 2123 fixedly installed inside the reduction housing 2121, and a multi-stage planetary gear set 2122 installed inside the gear ring 2123. The reduction end cover 2124 fixes the gear ring 2123 and the multi-stage planetary gear set 2122 inside the reduction housing 2121. In this embodiment, the reduction end cover 2124 is first fixed to the end face of the motor 211 housing by axial screws, and then fixed to one end of the reduction housing 2121 by radial screws.

[0061] The planetary gear set 2122 includes a sun gear, several planet gears, and a planet carrier. The sun gear of the first-stage planetary gear set is connected to the main shaft of the motor 211. The planet carrier of the last-stage planetary gear set has an irregular screw connection hole 2122A at its center for connecting a screw 213. This embodiment is provided with a three-stage planetary gear set 2122.

[0062] The mounting boss of the reduction gear housing 2121 has a bearing mounting hole and a screw insertion hole, and a flat bearing 215 is installed in the bearing mounting hole. Figure 9 As shown, the screw 213 has a threaded section 2131 for mounting the roller seat 221, a bearing abutment platform 2132 for abutting against the plane bearing 215, and a reducer connecting section 2133. The end of the reducer connecting section 2133 is adapted to the shape of the screw connecting hole 2122A. The reducer connecting section 2133 of the screw 213 passes through the plane bearing 215 and the screw insertion hole in sequence and enters the screw connecting hole 2122A to achieve a transmission connection with the reducer 212. This installation method of inserting the screw 213 into the reducer 212 can improve assembly efficiency.

[0063] like Figure 8 As shown, a groove is also provided on the deceleration housing 2121 at the outer end of the bearing mounting hole. A retaining ring 216 is provided in the groove to restrict the outward movement of the bearing abutment platform 2132. The retaining ring 216 is fixed to the deceleration housing 2121 by the end face of the clamp mounting plate 111, so that the outer side of the bearing abutment platform 2132 is limited by the retaining ring 216, and the inner side of the bearing abutment platform 2132 abuts against the flat bearing 215, thereby restricting the axial position of the screw 213.

[0064] like Figure 3 As shown, the drive mechanism 22 has a roller seat 221 that is slidably disposed on the plier head mounting component 11 and rollers 222 that are rotatably disposed at both ends of the roller seat 221.

[0065] Specifically, such as Figure 8 As shown, at least one clamp head mounting plate 111 has a strip-shaped guide groove 1113, which is arranged along the axial direction of the screw 213. At least one side of the roller seat 221 has a guide protrusion 2211 with a width adapted to the strip-shaped guide groove 1113. The length of the strip-shaped guide groove 1113 is greater than the length of the guide protrusion 2211, allowing the roller seat 221 to move along the strip-shaped guide groove 1113. In this embodiment, both clamp head mounting plates 111 have strip-shaped guide grooves 1113, and the roller seat 221 has guide protrusions 221 at both ends of the clamp head mounting plates 111.

[0066] The roller seat 221 has a threaded hole in the middle and is fitted onto the screw 213. The roller 222 cooperates with the corresponding force-receiving part 122. When the screw 213 rotates forward or backward, the roller seat 221 moves back and forth along the axis of the screw 213. When the roller seat 221 moves forward, the roller 222 drives the force-receiving part 122 to make the jaws 121 of the first clamp body 12 and the second clamp body 13 close (i.e., the jaws close), which cooperates with the mold 100 to realize the functions of pressing, cutting, tightening and so on.

[0067] When the roller seat 221 moves forward and drives the jaws to close, the screw 213 will be subjected to axial thrust from the roller seat 221. The bearing abutment platform 2132 on the screw 213 can directly abut against the plane bearing 215 to counteract the axial thrust and ensure the stable rotation of the screw 213.

[0068] like Figure 1 , 10 As shown, the control device 4 includes a control board, a start signal source 41 and a stop signal source 42 for controlling the start and stop of the motor 211. The start signal source 41 and the stop signal source 42 are preferably microswitches or Hall elements.

[0069] Stop signal sources 42 for controlling the motor 211 to stop are respectively provided on the jaw mounting components 11 (i.e., jaw mounting plates 111) at both ends of the strip guide groove 1113. The guide protrusion 2211 on one side of the corresponding roller seat 221 has a contact point extending outward to contact the stop signal source 42. When the guide protrusion 2211 touches the stop signal source 42 (travel limit signal switch) close to the jaw, the stop signal source 42 controls the motor 211 to stop, and at this time the jaw reaches the maximum closing position; when the guide protrusion 2211 touches the stop signal source 42 (initial position signal switch) away from the jaw, the stop signal source 42 controls the motor 211 to stop, and at this time the jaw reaches the initial position, and the jaw is in the maximum opening position under the action of the slider reset component 144.

[0070] In this embodiment, after the workpiece is processed, the closing position of the jaws is controlled by detecting the motor current. When the current reaches a set value, the control board automatically stops the motor to ensure the workpiece processing quality. At this time, the contacts of the roller seat 221 generally do not contact the stop signal source 42 (travel limit signal switch) near the jaws. The stop signal source 42 is generally triggered only when the jaws do not have a mold 100 or the mold 100 does not meet the requirements.

[0071] like Figure 2 , 11 As shown, the pliers mounting component 11 is provided with a trigger device 3 for manually driving the pliers jaws to close. The trigger device 3 includes a trigger handle 31, a trigger shaft 34, and an abutment part 32.

[0072] Two plier head mounting plates 111 extend to one side of their tails, each with a wrench mounting portion. The wrench mounting portion has a trigger shaft mounting hole, and the trigger handle 31 is rotatably mounted on the wrench mounting portion via a trigger shaft 34. The trigger handle 31 has a handle portion 311 for finger pressing and a latch portion 312. The handle portion 311 and the latch portion 312 can be integrally formed or separately formed. In this embodiment, two latch portions 312 are separately formed on both sides of the handle portion 311. The latch portions 312 can be metal to provide sufficient strength; the handle portion 311 can be plastic or rubber to reduce costs and improve finger pressing comfort.

[0073] The abutment portion 32 is disposed at the tail of the first clamp body 12 and / or the second clamp body 13, and corresponds to the latch portion 312. In this embodiment, the abutment portion 32 is a latch pin, which is installed in the latch pin mounting hole at the tail of the first clamp body 12 and / or the second clamp body 13. The two ends of the latch pin extend out of the side wall of the first clamp body 12 or the second clamp body 13, and correspond one-to-one with the two latch portions 312. When the user presses the handle portion 311 of the trigger handle 31, the latch portion 312 drives the jaws to close through the abutment portion 32, thereby achieving pre-press positioning of the workpiece.

[0074] After pressing the trigger handle 31, one of the clamps (first clamp 12 or second clamp 13) is driven to close. When the toothed rocker arm 132 of the clamp rotates, it will drive the toothed slider 141 to move linearly and realize the synchronous rotation of the toothed rocker arm 132 of the other clamp, thereby achieving synchronous closing.

[0075] In this embodiment, both the first clamp body 12 and the second clamp body 13 are provided with abutment parts 32. When the clamp head device 1 and the drive device 2 are installed, there is no need to consider the positional relationship between the first clamp body 12 and the second clamp body 13, that is, they can be installed in either direction.

[0076] Alternatively, the abutment portion 32 can also be a protrusion or slot structure integrally formed on the first clamp body 12 or the second clamp body 13.

[0077] In another embodiment, such as Figure 2 As shown, the trigger device 3 includes a trigger handle 31, a trigger shaft 34, a trigger reset member 33, and a contact part 32. A slotted hole 1112 is provided in the wrench mounting part. The trigger shaft 34 is movably disposed in the slotted hole 1112 through the trigger reset member 33. The trigger reset member 33 is preferably a U-shaped torsion spring, one end of which is fitted onto the trigger shaft 34 and the other end abuts against the abutting surface of the reduction housing 2121, driving the trigger shaft 34 to move outward from the slotted hole 1112.

[0078] In another embodiment, the trigger reset member 33 can also be fitted with one end of the trigger shaft 34 and the other end directly abutting against the pliers mounting plate 111. In fact, the deceleration housing 2121 and the pliers mounting plate 111 are fixedly connected, and the same function can be achieved by directly or indirectly abutting against the pliers mounting member 11.

[0079] The trigger handle 31 is rotatably mounted on the trigger shaft 34, with its latching part 312 corresponding to the abutment part 32. The start signal source 41 is fixed on the wrench mounting part of the pliers mounting plate 111 and is located on the rotation path of the trigger handle 31.

[0080] The jaws of the present invention are normally open jaws, and the trigger handle 31 has two pressing strokes and three critical positions, namely the initial position, the pre-press position and the switch start position.

[0081] like Figure 12 As shown, the workpieces in this embodiment are cable 101 and terminal block 102. After the cable 101 and terminal block 102 are assembled and placed into the terminal block crimping mold, the user first presses the first stroke of the trigger handle 31, that is, the trigger handle 31 is pressed from the initial position to the pre-pressed position. During this process, the trigger handle 31 rotates around the trigger shaft 34 and drives the jaws to close through the abutment part 32, which makes it convenient for the user to observe whether the processing position is correct. At this time, the trigger handle 31 is in the pre-pressed position.

[0082] Then continue pressing the second stage of the trigger handle 31, that is, pressing the trigger handle 31 from the pre-press position to the switch start position. During this process, the trigger handle 31 rotates around the abutment part 32, and the trigger shaft 34 presses down, thereby triggering the start signal source 41. At this time, the trigger handle 31 is in the switch start position, the motor 211 works and drives the screw 213 to rotate, and the drive mechanism 22 moves towards the jaws to achieve the closing of the jaws. When the control device 4 detects that the current of the motor 211 reaches the set value, it controls the motor 211 to stop and short-circuit the brake, thereby completing the crimping work of the wire and the terminal.

[0083] When the trigger handle 31 is released, the start signal source 41 is disconnected, the control device 4 drives the motor to reverse, and the roller seat 221 is reset. When it touches the stop signal source 42 (initial position signal switch) away from the jaws, the motor stops and waits to enter the next working state.

[0084] During the first phase of the trigger handle 31's press, the resistance mainly comes from the slider reset member 144, i.e., overcoming the first force exerted by the slider reset member 144 driving the jaws to open through the jaw device 1. During the second phase of the trigger handle 31's press, the resistance mainly comes from the trigger reset member 33, i.e., overcoming the second force exerted by the trigger reset member 33 pushing the trigger shaft 34 outward. In this embodiment, the second force exerted by the trigger reset member 33 on the trigger handle 31 is greater than the first force exerted by the slider reset member 144 on the trigger handle 31.

[0085] Under normal circumstances, the elastic coefficient of the trigger reset member 33 is greater than that of the slider reset member 144. At this time, during the first pressing stroke, the trigger handle 31 ensures that the trigger reset member 33 is not pressed. After the user presses the first stroke, the jaws are against the workpiece, and manual pressing can no longer continue, resulting in a noticeable change in force, thus reminding the user that the pre-pressing position has been reached. When the pre-pressing position is the correct pressing position for the workpiece, continuing to press the trigger handle 31 starts the motor, achieving electric pressing. In this embodiment, by pressing the trigger handle 31 in segments, manual pre-pressing and electric pressing of the workpiece can be achieved, facilitating one-handed operation and improving operational convenience.

[0086] Example 2:

[0087] The application scenario of this embodiment is the tightening of clamps. The clamp in this embodiment specifically refers to a reusable earless clamp, which has a tension hook and a load-holding hook.

[0088] like Figure 13 As shown, a pair of clamp tightening molds (tightening claws) for tightening clamps 105 are installed on the jaws of the clamp head device 1. First, clamps 105 are fitted onto the connection between pipe fitting 103 (rubber hose) and pipe joint 104. Then, the trigger handle 31 is pre-pressed, so that the claws of the clamp tightening molds (clamp tightening claws) extend into the corresponding tension hooks of clamps 105. Then, the trigger handle 31 is pressed to start the motor 211, and clamps 105 tighten. When the load of clamps 105 is maintained by the hooks, the trigger handle 31 is released, so that the motor reverses and resets, and the jaws automatically open, waiting for the next operation.

[0089] Example 3:

[0090] The application scenario of this embodiment is the release of the clamp. The clamp in this embodiment specifically refers to a reusable earless clamp. The earless clamp has a load holding hook, a release hook, and a pre-fixed hook that engages with the release hook.

[0091] like Figure 14As shown, a pair of clamp-removing molds (clamp-removing claws) for releasing the clamp 105 are installed on the jaws of the clamp head device 1. The trigger handle 31 is pre-pressed, causing the claws of the clamp-removing molds (clamp-removing claws) to extend into the release hook and pre-fixing hook of the clamp 105, respectively. Then, the trigger handle 31 is pressed further to start the motor 211, tightening the clamp. After the load holding hook separates, the trigger handle 31 is released, causing the motor to reverse and reset, automatically opening the jaws for the next operation.

[0092] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A clamp head device, characterized in that, include: Clamp head mounting component (11); A first clamp body (12) and a second clamp body (13) are rotatably mounted on the clamp head mounting component (11), and the front ends of the first clamp body (12) and the second clamp body (13) form clamp jaws; and A synchronous rotation mechanism (14) is used to realize the synchronous rotation of the first clamp (12) and the second clamp (13); The synchronous rotation mechanism (14) includes: A toothed slider (141) is slidably disposed on the pliers head mounting component (11). A first tooth (142) is disposed on the first clamp (12) near the second clamp (13) and engages with the toothed slider (141); and The second tooth (143) is disposed on the second clamp (13) near the first clamp (12) and engages with the toothed slider (141).

2. The clamp head device according to claim 1, characterized in that: in, The synchronous rotation mechanism (14) also includes a slider reset member (144), which abuts against the toothed slider (141) and is used to drive the toothed slider (141) to move so as to realize the automatic opening of the jaws.

3. A clamp head device according to claim 1 or 2, characterized in that: in, The first clamp body (12) and the second clamp body (13) both include clamp arm plate A (131), toothed rocker arm (132) and clamp arm plate B (133) fixed to each other; The toothed rocker arm (132) has a plurality of teeth for forming the first toothed portion (142) or the second toothed portion (143); The toothed slider (141) has toothed grooves (1411) on both sides corresponding to the first tooth (142) and the second tooth (143). The rotation of one of the toothed rocker arms (132) can drive the linear movement of the toothed slider (141) and achieve synchronous rotation of the other toothed rocker arm (132).

4. A clamp head device according to claim 3, characterized in that: in, The first clamp body (12) and the second clamp body (13) are both rotatably mounted inside the clamp head mounting component (11) via a cylindrical pin (15). The outer front end of the toothed rocker arm (132) abuts against or is fitted onto the cylindrical pin (15). The inner front end of the toothed rocker arm (132) is provided with several teeth, which are circumferentially distributed around the axis of the cylindrical pin (15).

5. A clamp head device according to claim 1, characterized in that: in, The first clamp body (12) and the second clamp body (13) are both rotatably mounted in the clamp head mounting component (11) by means of cylindrical pins (15). A baffle (16) is installed between the two cylindrical pins (15), and the baffle (16) is located on the side of the synchronous rotation mechanism (14) near the jaws.

6. A clamping device according to claim 5, characterized in that: in, The back end of the baffle (16) is respectively formed with arc-shaped locking grooves (161) for locking the cylindrical pin (15); The baffle (16) has a blocking boss (162) extending in the width direction at the middle part. The blocking boss is located in the gap between the first clamp body (12) and the second clamp body (13) and abuts against the clamp head mounting component (11).

7. A clamp head device according to claim 1, characterized in that: in, The pliers head mounting component (11) has pliers head mounting plates (111) respectively disposed on both sides of the first pliers body (12) and the second pliers body (13), and at least one pliers head mounting plate (111) has a strip-shaped sliding groove (1111). The toothed slider (141) has a slider protrusion (1412) on at least one side, and the toothed slider (141) moves linearly within the strip groove (1111) via the slider protrusion (1412).

8. A handheld tool, characterized in that, It includes the pliers device as described in any one of claims 1-7 and the drive device (2) for driving the pliers device to move.

9. A handheld tool according to claim 8, Its features are: It also includes a trigger device (3) for manually driving the jaws to close, the trigger device (3) comprising: A trigger handle (31) is rotatably disposed on one side of the rear end of the pliers mounting component (11), and has a handle portion (311) for finger pressing and a latch portion (312); and The abutting part (32) is provided at the tail of the first clamp body (12) and / or the second clamp body (13) and corresponds to the latching part (312); Pressing the handle portion (311) of the trigger handle (31), the latch portion (312) drives the jaws to close via the abutment portion (32).

10. A handheld tool according to claim 8 or 9, characterized in that: in, It also includes a drive device (2) for driving the jaws to close, which includes a power mechanism (21) for providing power and a drive mechanism (22) connected to the output end of the power mechanism (21) and acting on the first jaw (12) and the second jaw (13); The power mechanism (21) includes a motor (211), a reducer (212), and a screw (213). The motor (211) is fixed on the pliers mounting component (11) through the reducer (212). The input end of the screw (213) is connected to the reducer (212), and the other end of the screw (213) is rotatably mounted on the pliers mounting component (11) through a screw support block (214). The slider reset component (144) abuts between the toothed slider (141) and the screw support block (214).

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