A dual reset mode electro-hydraulic tong

Abstract

The application relates to a double-reset-mode electric hydraulic clamp, which comprises a head assembly, a main machine part and a crimping die, the head assembly is used for being connected with the crimping die, the main machine part comprises a pump body assembly and a manual pressure relief assembly, the pump body assembly is used for driving the crimping die to work; the pump body assembly comprises an automatic pressure regulating valve and a pressure relief rod, the automatic pressure regulating valve is used for automatically relieving pressure when crimping pressure reaches a set pressure value, so as to end the crimping work; the pressure relief rod is connected with the manual pressure relief assembly, and is used for manually relieving pressure and returning oil during the crimping work, so that the electric hydraulic clamp is reset. The application has the effect that the hydraulic work can be quickly reset and interrupted in the case of special conditions during the crimping work.

Description

Technical Field

[0001] This application relates to the technical field of electro-hydraulics, and in particular to an electro-hydraulic clamp with a dual reset mode. Background Technology

[0002] Electric hydraulic clamps are generally used to connect cables and terminals during cable installation, depending on the actual situation. They are a smart, basic, and universal tool.

[0003] Existing electric hydraulic clamps use a hydraulic pump to provide hydraulic power to move the crimping die relative to the cable and terminal to crimp them. Different crimping pressures need to be set according to different models and sizes of cables and terminals. When the crimping pressure reaches the set value, the hydraulic pump automatically opens through a pressure relief switch to release pressure, thereby stopping the hydraulic action and the hydraulic pump stops outputting power, thus completing the crimping.

[0004] However, various special situations may occur during the actual crimping operation, such as insufficient hydraulic pressure, mismatch between the mold and the cable and terminal, terminal detachment, and damage to the insulation layer. When these situations are discovered, it is necessary to passively wait for the crimping pressure to reach the set value and automatically release the pressure, which wastes time and reduces work efficiency. Alternatively, the special situation can be dealt with by powering off and stopping the machine, and then restarting it after the special situation is resolved. Frequent opening and closing can also easily damage the electric hydraulic clamp.

[0005] Regarding the aforementioned technologies, the inventors believe that there is a drawback in that the crimping operation cannot be quickly interrupted in special circumstances. Utility Model Content

[0006] In view of this, this application provides an electric hydraulic clamp with dual reset modes, which can quickly reset and interrupt hydraulic operation in special circumstances during the crimping process.

[0007] The electric hydraulic clamp with dual reset mode provided in this application adopts the following technical solution: An electro-hydraulic clamp with dual reset modes includes a head assembly, a main unit, and a crimping die. The head assembly is connected to the crimping die. The main unit includes a pump body assembly and a manual pressure relief assembly. The pump body assembly drives the crimping die. The pump body assembly includes an automatic pressure regulating valve and a pressure relief rod. The automatic pressure regulating valve automatically releases pressure when the crimping pressure reaches a set pressure value to end the crimping operation. The pressure relief rod is connected to the manual pressure relief assembly and is used to manually release pressure and return oil during the crimping operation to reset the electro-hydraulic clamp.

[0008] By adopting the above technical solution, the automatic pressure regulating valve realizes normal crimping operations. In special circumstances, the pressure relief rod can be pulled up by the manual pressure relief component to manually relieve pressure and return oil, stop the hydraulic power output, and enable the electric hydraulic clamp to quickly reset, thereby improving efficiency and safety.

[0009] Preferably, the main unit includes a housing, and the manual pressure relief assembly includes a manual button and a pry bar. The pry bar is located between the pump body assembly and the housing and is rotatably connected to the housing. A first end of the pry bar is connected to the manual button, and a second end is connected to the pressure relief rod. The manual button is located outside the housing and is movably connected to the housing. The manual button moves towards the pump body assembly, causing the pry bar to rotate and pry up the pressure relief rod to relieve pressure.

[0010] By adopting the above technical solution, the manual button is located on the outside of the housing for easy operation. The pressure relief rod is lifted by rotating the pry bar to release pressure. The structure is simple and effective. The pry bar is installed in the space between the housing and the pump body, which makes the structure compact and reduces the overall size of the electric hydraulic clamp.

[0011] Preferably, the head assembly includes a head body, a head cover, a cover latch, a piston assembly, and a lower mold frame. The head cover and the cover latch are hinged to the head body, and the head cover is engaged with the cover latch. A piston hole is provided through the center of the head body. The piston assembly is movably connected to the piston hole. The lower mold frame is located on the head body and connected to the piston assembly. The piston assembly moves relative to the piston hole along the axial direction of the piston hole under the drive of the pump assembly, so that the lower mold frame moves between the head body and the head cover.

[0012] By adopting the above technical solution, the head cover can be flipped open relative to the head body, making it easy to insert cables and terminals. The head cover latch fixes the head body and the head cover latch, ensuring that there are no gaps at the crimping position and that the force is evenly distributed.

[0013] Preferably, the head cover includes a first limiting part, the head body includes a second limiting part, and the cover latch includes a third limiting part; the first limiting part, the second limiting part, and the third limiting part are used to restrict the movement of the lower mold frame. In the case of pressing operation, the lower mold frame is located at the first limiting part, and in the reset state, the lower mold frame is located at the second limiting part.

[0014] By adopting the above technical solution, the lower mold frame slides from the second limiting part to the first limiting part during the pressing operation, and slides from the first limiting part to the second limiting part during the reset operation. Multiple limiting parts limit the movement of the lower mold frame and prevent displacement in all directions, making the pressing operation more stable and precise.

[0015] Preferably, the first limiting part includes a first limiting side and a second limiting side disposed opposite to each other, and two positioning top surfaces. The two positioning top surfaces are respectively connected to the first limiting side and the second limiting side and are symmetrically disposed. The second limiting part includes a third limiting side and four fourth limiting sides, and a positioning bottom surface. The third limiting part includes a fifth limiting side. During the pressing operation, the first limiting side and the third limiting side are located on the same plane, and the second limiting side and the fifth limiting side are located on the same plane.

[0016] By adopting the above technical solution, each limiting side cooperates to limit the side and end face of the lower mold, and the positioning top and positioning bottom face limit the top and bottom of the lower mold, thereby achieving precise positioning and stable support.

[0017] Preferably, the head flap includes an upper mold portion, the lower mold frame includes a lower mold portion, the upper mold portion and the lower mold portion are opposite to each other, and the head assembly further includes two mold positioning pins and two mold positioning pushers. The two mold positioning pins are respectively connected to the head flap and the lower mold frame, and respectively protrude from the upper mold portion and the lower mold portion to position the pressing mold. The two mold positioning pushers are respectively connected to the head flap and the lower mold frame, and respectively movably connected to the two mold positioning pins to adjust the distance between the two mold positioning pins protruding from the upper mold portion and the lower mold portion.

[0018] By adopting the above technical solution, two mold positioning pins are used to position the pressing mold. The two mold positioning pins are adjusted to protrude from the upper and lower mold parts to adapt to different models of pressing molds and improve the adaptability of the electric hydraulic clamp.

[0019] Preferably, the head cover is provided with a first locking pin hole and a first push-pull hole, and the lower mold frame is provided with a second locking pin hole and a second push-pull hole. The first locking pin hole is located in the upper mold portion, and the second locking pin hole is located in the lower mold portion. The first push-pull hole is located on the end face of the head cover and communicates with the first locking pin hole, and the second push-pull hole is located on the end face of the lower mold frame and communicates with the second locking pin hole. The mold positioning locking pin includes a locking pin shaft and a second elastic element. The two locking pin shafts and the two second elastic elements are respectively located in the first locking pin hole and the second locking pin hole. The second elastic element is located below the locking pin shaft. A V-shaped positioning groove is formed on the circumferential surface of the locking pin shaft. The mold positioning push-pull includes a conical head. The mold positioning push-pull adjusts the distance by which the locking pin shaft protrudes from the upper mold portion or the lower mold portion by adjusting the depth of the conical head inserted into the V-shaped positioning groove.

[0020] By adopting the above technical solution, the conical head and the V-shaped positioning groove are adapted to abut each other to position the locking pin. The depth of the conical head inserted into the V-shaped positioning groove can be adjusted by pushing and pulling the conical head. The method is simple and easy to operate.

[0021] Preferably, the top of the locking pin is provided with a straight locking strip, and the two locking strips protrude from the upper mold part and the lower mold part respectively. The upper mold and the lower mold of the pressing mold are both provided with locking grooves, and the locking strips are adapted to the locking grooves for locking.

[0022] By adopting the above technical solution, the cooperation between the card strip and the card slot enables the positioning of the pressing mold. The structure is simple and the installation is convenient.

[0023] Preferably, the head flap includes a first steel ball hole, the lower mold frame includes a second steel ball hole, the head assembly includes two mold positioning steel balls, the two mold positioning steel balls are respectively located in the first steel ball hole and the second steel ball hole, the mold positioning steel ball includes a copper cap, a steel ball and a third elastic element, the third elastic element is located at the bottom of the corresponding steel ball hole, the copper cap is located at the top of the corresponding steel ball hole, and the steel ball is located inside the copper cap and protrudes from the copper cap.

[0024] By adopting the above technical solution, the pressing mold is positioned by steel balls, and the pressing mold is installed and moved smoothly, reducing friction.

[0025] Preferably, the axis of the second locking pin hole is inclined relative to the bottom surface of the lower mold frame, the second steel ball hole is located in the lower mold part and is inclined relative to the bottom surface of the lower mold frame, the first steel ball hole is located in the upper mold part, and after the head cover is fastened, the axis of the first locking pin hole and the axis of the second locking pin hole are collinear, the axis of the first steel ball hole and the axis of the second steel ball hole are collinear, and the axis of the second locking pin hole and the axis of the second steel ball hole intersect.

[0026] By adopting the above technical solution, the crimping mold is symmetrically and evenly positioned at four locations, which improves the stability of the crimping operation and ensures the accuracy of the crimping action.

[0027] This application provides an electro-hydraulic crimping tool with dual reset modes. It can automatically depressurize during normal operation and quickly manually depressurize and reset in special circumstances. The combination of these two modes makes crimping operations more efficient and improves safety. It can be used to crimp cables and terminals of various sizes and types, making it a universal device for smart infrastructure. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an electro-hydraulic clamp with dual reset mode provided in an embodiment of this application.

[0029] Figure 2This is a cross-sectional schematic diagram of the host component provided in the embodiments of this application.

[0030] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0031] Figure 4 This is an exploded view of the head assembly provided in an embodiment of this application.

[0032] Figure 5 This is a schematic diagram of the header component provided in an embodiment of this application.

[0033] Figure 6 This is a schematic diagram of the head flap provided in an embodiment of this application.

[0034] Figure 7 This is a schematic diagram of the head body provided in the embodiments of this application.

[0035] Figure 8 This is a schematic diagram of the lower mold frame provided in an embodiment of this application.

[0036] Figure 9 This is a schematic diagram of the card pin provided in the embodiment of this application.

[0037] Figure 10 This is a schematic diagram of the sales axis provided in an embodiment of this application.

[0038] Explanation of reference numerals in the attached drawings: 1. Head assembly; 11. Head body; 111. Cylindrical base; 1111. Piston hole; 112. First hinge seat; 113. Second hinge seat; 114. Elastic pin; 115. Torsion spring; 1161. Third limiting side; 1162. Fourth limiting side; 1163. Positioning bottom surface; 12. Head flap; 121. First hinge part; 122. Buckle; 123. Upper mold part; 1241. First limiting side; 1242. Second limiting side; 1243. Positioning top surface; 125. First locking pin hole; 126. First push hole; 127. First steel ball hole; 13. Flip cover latch; 131. Second hinge part; 132. Lock groove; 133. Fifth limiting side; 14 1. Piston assembly; 141. Piston rod; 142. First elastic element; 143. Sealing ring; 15. Lower mold frame; 151. Mounting hole; 152. Lower mold part; 153. Second retaining pin hole; 154. Second push-pull hole; 155. Pin hole; 156. Second steel ball hole; 161. Retaining pin shaft; 1611. Retaining strip; 1612. V-shaped positioning groove; 162. Push-pull shaft; 1621. Conical head; 1622. Push rod head; 163. Copper cap; 164. Positioning pin shaft; 2. Main unit components; 21. Pump body assembly; 211. Hydraulic pump; 212. Reducer; 213. Pressure relief rod; 22. Manual pressure relief assembly; 221. Manual button; 222. Pry bar; 23. Housing; 231. Rotating shaft; 3. Battery pack. Detailed Implementation

[0039] To better understand the purpose, technical solutions, and advantages of this application, it has been described and illustrated below with reference to the accompanying drawings and embodiments. However, those skilled in the art should understand that this application can be implemented without these details. In some cases, to avoid obscuring various aspects of this application due to unnecessary description, well-known methods, processes, systems, components, and / or circuits already described at a higher level will not be elaborated upon. It will be apparent to those skilled in the art that various modifications can be made to the embodiments disclosed in this application, and the general principles defined in this application can be applied to other embodiments and application scenarios without departing from the principles and scope of this application. Therefore, this application is not limited to the illustrated embodiments, but conforms to the broadest scope consistent with the scope of protection claimed in this application.

[0040] It should be noted that the descriptions of these embodiments are for the purpose of aiding understanding of the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0042] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples.

[0043] This application discloses a dual-composite-mode electro-hydraulic clamp.

[0044] like Figure 1 As shown, the dual-composite-mode electric hydraulic clamp includes a head assembly 1, a main unit 2, a battery pack 3, and a crimping die (not shown in the figure). The head assembly 1 is used to connect with the crimping die. The main unit 2 includes a pump body assembly 21 and a manual pressure relief assembly 22. The pump body assembly 21 is used to drive the crimping die. The pump body assembly 21 includes a hydraulic pump 211 and a reducer 212. The hydraulic pump 211 is equipped with an automatic pressure regulating valve and a pressure relief rod 213. The automatic pressure regulating valve is used to automatically open and automatically relieve pressure when the crimping pressure reaches a set pressure value during the crimping operation of cables and terminals, thereby completing the crimping operation. The pressure relief rod 213 is connected to the internal oil circuit of the hydraulic pump 211 and to the manual pressure relief assembly 22. It is used to manually relieve pressure and return oil in case of special conditions during the crimping operation, so that the electric hydraulic clamp can be reset.

[0045] This application utilizes an automatic pressure regulating valve for automatic pressure relief and reset. A pressure relief rod 213 is connected to a manual pressure relief assembly 22. When a tool needs to be reset in a special situation, the manual pressure relief assembly 22 operates the pressure relief rod 213 to manually return oil for reset, achieving rapid interruption without wasting time waiting or requiring a forced shutdown to avoid damage to the hydraulic pump 211 or reducer 212. The combination of automatic and manual reset modes achieves both efficient crimping operations and improved operational safety.

[0046] like Figure 2 and Figure 3As shown, the main unit 2 includes a housing 23, which is located around the hydraulic pump 211. The manual pressure relief assembly 22 includes a manual button 221 and a pry bar 222. The pry bar 222 is located between the pump assembly 21 and the housing 23, specifically between the hydraulic pump 211 and the housing 23. The pry bar 222 includes a rotating hole. The housing 23 is provided with a rotating shaft 231. The pry bar 222 is rotatably connected to the housing 23 through the rotating hole and the rotating shaft 231. The first end of the pry bar 222 is connected to the manual button 221, and the second end is connected to the pressure relief rod 213, wherein the second end is closer to the rotating hole than the first end. The position is further away from the pump body assembly 21 than the second end. The manual button 221 is located outside the housing 23 and is movably connected to the housing 23. The manual button 221 can be moved towards or away from the pump body assembly 21. When it moves towards the pump body assembly 21, the first end of the pry bar 222 is also pressed down towards the pump body assembly 21. The pry bar 222 then rotates around the pivot 231, causing the second end of the pry bar 222 to move away from the pump body assembly 21 and pry up the pressure relief rod 213 to release pressure, thereby realizing the manual reset of the electric hydraulic clamp.

[0047] Please refer to Figure 4 and Figure 5 The head assembly 1 includes a head body 11, a head flap 12, and a flap latch 13. The head body 11 is used to connect to the pump body assembly 21. The head flap 12 is hinged to the head body 11, allowing the pressing operation position to be opened or closed. The flap latch 13 is used to fix the head flap 12 to the head body 11 to close the pressing operation position and ensure stable pressing operation. Figure 4 As shown, the head body 11 includes a cylindrical base 111, a first hinge seat 112, and a second hinge seat 113. The first hinge seat 112 and the second hinge seat 113 are connected to the top surface of the cylindrical base 111 and are disposed opposite to each other. The head flap 12 is arc-shaped and includes a first hinge portion 121 and a buckle 122. The first hinge portion 121 is located at the end of the arc and is hinged to the first hinge seat 112 by an elastic pin 114 and a torsion spring 115. The buckle 122 is located on the side opposite to the first hinge portion 121. The flip-top latch 13 includes a second hinge portion 131 and a locking groove 132. The second hinge portion 131 and the second hinge seat 113 are hinged by an elastic pin 114 and a torsion spring 115. The locking groove 132 is located above the second hinge portion 131. The buckle 122 and the locking groove 132 can be adapted to engage and connect, thereby sealing the pressing position and avoiding uneven force, which would affect the working effect.

[0048] like Figure 4 and Figure 5As shown, the head assembly 1 also includes a piston assembly 14 and a lower mold frame 15. The piston assembly 14 includes a piston rod 141, a first elastic element 142 and a sealing ring 143. A piston hole 1111 is provided through the center of the cylindrical base 111 of the head body 11. The first elastic element 142 is sleeved on the piston rod 141 and is coaxially disposed in the piston hole 1111 with the piston rod 141. The piston rod 141 can move relative to the piston rod 141 along the axial direction of the piston hole 1111. The lower mold frame 15 is located between the first hinge seat 112 and the second hinge seat 113. The lower mold frame 15 is provided with a through mounting hole 151, through which one end of the piston rod 141 can be threadedly connected. The other end of the piston rod 141 is connected to the pump body assembly 21. Thus, under the drive of the pump body assembly 21, the piston rod 141 can move relative to the piston hole 1111 along the axial direction of the piston hole 1111, so that the lower mold frame 15 can move between the head body 11 and the head cover 12. The head cover 12 includes an arc-shaped upper mold portion 123 and a lower mold frame 15 includes a circular lower mold portion 152. The upper mold portion 123 and the lower mold portion 152 are opposite each other. When the head cover 12 is closed, an elliptical crimping operation area is formed between the upper mold portion 123 and the lower mold portion 152. The lower mold portion 152 is used to install the lower mold of the crimping mold, and the upper mold portion 123 is used to install the upper mold of the crimping mold. When the lower mold frame 15 moves between the head body 11 and the head cover 12, it moves the lower mold closer to or away from the upper mold so as to perform crimping operations on cables and terminals.

[0049] like Figure 6 and Figure 7As shown, the head cover 12 includes a first limiting part, the head body 11 includes a second limiting part, and the cover latch 13 includes a third limiting part. The first limiting part, the second limiting part, and the third limiting part are used to restrict the movement of the lower mold frame 15. The first limiting part includes a first limiting side 1241 and a second limiting side 1242 that are arranged opposite to each other. The top of the first limiting side 1241 and the top of the second limiting side 1242 are both provided with positioning top surfaces 1243. The two positioning top surfaces 1243 protrude from the corresponding limiting side and are perpendicular to the corresponding limiting side. The two positioning top surfaces 1243 are symmetrical to each other. When the lower mold frame 15 moves toward the head cover 12, the first limiting side 1241 and the second limiting side 1242 guide and limit the two sides at both ends of the length direction of the lower mold frame 15. The two positioning top surfaces 1243 are used to restrict the movement of the lower mold frame 15 toward the upper mold part 123. The second limiting part includes a third limiting side 1161 and four fourth limiting sides 1162, as well as a positioning bottom surface 1163 perpendicular to the third limiting side 1161 and the fourth limiting side 1162. The third limiting side 1161 is located on the first hinge seat 112, and the four fourth limiting sides 1162 are respectively located on the first hinge seat 112 and the second hinge seat 113, and are opposite to each other in pairs. The third limiting part includes a fifth limiting side 133 located below the second hinge part 131. After the flip cover latch 13 is engaged with the head flip cover 12, the third limiting side 1161 and the first limiting side 1241 are located on the same plane, that is, the first limiting side 1241 and the third limiting side 1161 are flush, the fifth limiting side 133 is opposite to the third limiting side 1161, and the fifth limiting side 133 and the second limiting side 1242 are on the same plane. During the pressing operation, as the lower mold frame 15 moves towards the head body 11, the third limiting side 1161 and the fifth limiting side 133 guide and limit the sides at both ends of the lower mold frame 15 in the length direction, and the four fourth limiting sides 1162 limit the end faces at both ends of the lower mold frame 15 in the thickness direction. By setting the first limiting part, the second limiting part, and the third limiting part, during the pressing operation, the lower mold frame 15 slides along the third limiting side 1161 and the two fourth limiting sides 1162 to the first limiting part, ensuring smooth movement and pressing accuracy. The two positioning top surfaces 1243 abut against the top of the lower mold frame 15 to restrict its movement towards the upper mold part 123. The multiple limiting sides cooperate with the sides and end faces of the lower mold frame 15 to restrict its lateral and longitudinal displacement. During the resetting process, the lower mold frame 15 slides along the first limiting side 1241 and the second limiting side 1242 to the second limiting part, achieving precise positioning and stable support.

[0050] Please continue to refer to this. Figure 4The head assembly 1 also includes two mold positioning pins and two mold positioning pushers. The two mold positioning pins are connected to the head cover 12 and the lower mold frame 15 respectively, and protrude from the upper mold part 123 and the lower mold part 152 respectively to connect and position with the upper mold and the lower mold in the pressing mold. The two mold positioning pushers are connected to the head cover 12 and the lower mold frame 15 respectively, and are movably connected to the two mold positioning pins respectively, for adjusting and fixing the distance of the two mold positioning pins protruding from the upper mold part 123 and the lower mold part 152 to adapt to different models of pressing molds.

[0051] like Figure 6 and Figure 8 As shown, the head flap 12 has a first locking pin hole 125 and a first push-pull hole 126, and the lower mold frame 15 has a second locking pin hole 153 and a second push-pull hole 154. The first locking pin hole 125 passes through the upper mold part 123, and the second locking pin hole 153 passes through the lower mold part 152. The first push-pull hole 126 is located on the end face of the head flap 12 in the thickness direction and communicates with the first locking pin hole 125. The second push-pull hole 154 is located on the end face of the lower mold frame 15 in the thickness direction and communicates with the second locking pin hole 153. The mold positioning pin includes a locking pin shaft 161 and a second elastic element. The two locking pin shafts 161 and the two second elastic elements are located in the first locking pin hole 125 and the second locking pin hole 153, respectively. The second elastic elements are located below the locking pin shafts 161 and contact the bottom of the corresponding locking pin hole. Figure 9 As shown, the top of the locking pin 161 is provided with a straight locking strip 1611, which protrudes from the lower mold portion 152. Both the upper and lower molds in the pressing mold have corresponding locking grooves. The locking strip 1611 is fitted into the locking groove to position the pressing mold. Besides its positioning function, the mold positioning locking pin can also reliably fix the pressing mold, preventing it from loosening or shifting due to hydraulic pressure or other external forces during operation. It can also provide additional tightening force after the pressing mold is positioned, ensuring its stability. The circumferential surface of the locking pin 161 is provided with a V-shaped positioning groove 1612, such as... Figure 10As shown, each mold positioning pusher includes a pusher shaft 162, which includes a conical head 1621 and a pusher head 1622. The pusher head 1622 is used to insert the conical head 1621 into the corresponding second pusher hole 154, so that the conical head 1621 engages with the corresponding V-shaped positioning groove 1612. By adjusting the depth of the conical head 1621 inserted into the V-shaped positioning conical groove 1612, and with the extension and contraction of the second elastic element, the distance of the locking pin shaft 161 protruding from the upper mold portion 123 or the lower mold portion 152 can be adjusted. The mold positioning pusher can accurately determine the position of the pressing mold, ensuring the installation accuracy of the pressing mold in the hydraulic clamp, thereby ensuring the accuracy and consistency of the pressing operation. During the installation of the crimping die, it is first positioned by engaging the slot and the clip 1611. Then, the insertion depth of the conical head 1621 is adjusted so that the clip 1611 abuts against the bottom surface of the slot under the elastic force of the second elastic element, thereby limiting the displacement of the crimping die in the horizontal and vertical directions and enabling the crimping die to be accurately aligned with the working part.

[0052] Specifically, the upper mold portion 123 and the lower mold portion 152 are each provided with a pin hole 155, one of which is connected to the first push hole 126, and the other is connected to the second push hole 154. The head assembly 1 also includes two positioning pins 164. After the conical head 1621 is inserted into the V-shaped positioning groove 1612 and its position is adjusted, the two positioning pins 164 are respectively inserted into the two pin holes 155 to fix the position of the mold positioning push and prevent the conical head 1621 from shifting.

[0053] like Figure 4As shown, the head flap 12 also includes a first steel ball hole 127, and the lower mold frame 15 also includes a second steel ball hole 156. The head assembly 1 includes two mold positioning steel balls, which are located in the first steel ball hole 127 and the second steel ball hole 156, respectively. Each mold positioning steel ball includes a copper cap 163, a steel ball, and a third elastic element. The third elastic element is located at the bottom of the corresponding steel ball hole, and the copper cap 163 is located at the top of the corresponding steel ball hole. The steel ball is located inside the copper cap 163 and protrudes from the top of the copper cap 163 to protrude from the upper mold portion 123 and the lower mold portion 152. During the installation of the pressing mold, the steel balls abut against the pressing mold on both sides, which can not only assist in positioning but also reduce friction during the installation of the pressing mold, making the pressing operation of the pressing mold more stable. The axis of the second locking pin hole 153 is inclined relative to the bottom surface of the lower mold frame 15, and the axis of the first locking pin hole 125 is collinear with the axis of the second locking pin hole 153 to form a first axis. The second steel ball hole 156 is located in the lower mold part 152 and is inclined relative to the bottom surface of the lower mold frame 15. The first steel ball hole 127 is located in the upper mold part 123. The axis of the first steel ball hole 127 and the second steel ball hole 156 are collinear to form a second axis. The first axis and the second axis intersect to form an "X" shape, that is, the two mold positioning pins are symmetrical along the second axis, and the two mold positioning steel balls are symmetrical along the first axis. The pressing mold is symmetrically and evenly positioned at four positions, which improves the stability of the pressing operation and ensures the accuracy of the pressing action.

[0054] In this embodiment, the first elastic element, the second elastic element, and the third elastic element are all compression springs.

[0055] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electric hydraulic clamp with dual reset modes, characterized in that: It includes a head assembly (1), a main unit (2) and a pressing mold. The head assembly (1) is used to connect with the pressing mold. The main unit (2) includes a pump body assembly (21) and a manual pressure relief assembly (22). The pump body assembly (21) is used to drive the pressing mold to operate. The pump body assembly (21) includes an automatic pressure regulating valve and a pressure relief rod (213). The automatic pressure regulating valve is used to automatically release pressure when the crimping pressure reaches the set pressure value to end the crimping operation. The pressure relief rod (213) is connected to the manual pressure relief assembly (22) and is used to manually release pressure and return oil during the crimping operation to reset the electric hydraulic clamp.

2. The electro-hydraulic clamp with dual reset mode according to claim 1, characterized in that: The main unit (2) includes a housing (23), and the manual pressure relief assembly (22) includes a manual button (221) and a pry bar (222). The pry bar (222) is located between the pump body assembly (21) and the housing (23) and is rotatably connected to the housing (23). The first end of the pry bar (222) is connected to the manual button (221), and the second end is connected to the pressure relief rod (213). The manual button (221) is located outside the housing (23) and is movably connected to the housing (23). The manual button (221) moves towards the pump body assembly (21) to rotate the pry bar (222) and pry up the pressure relief rod (213) to relieve pressure.

3. The electric hydraulic clamp with dual reset mode according to claim 1, characterized in that: The head assembly (1) includes a head body (11), a head cover (12), a cover latch (13), a piston assembly (14), and a lower mold frame (15). The head cover (12) and the cover latch (13) are hinged to the head body (11), and the head cover (12) is engaged with the cover latch (13). A piston hole (1111) is provided through the center of the head body (11). The piston assembly (14) is movably connected to the piston hole (1111). The lower mold frame (15) is located on the head body (11) and connected to the piston assembly (14). The piston assembly (14) moves relative to the piston hole (1111) along the axial direction of the piston hole (1111) under the drive of the pump body assembly (21), so that the lower mold frame (15) moves between the head body (11) and the head cover (12).

4. The electro-hydraulic clamp with dual reset mode according to claim 3, characterized in that: The head flap (12) includes a first limiting part, the head body (11) includes a second limiting part, and the flap latch (13) includes a third limiting part; the first limiting part, the second limiting part and the third limiting part are used to restrict the movement of the lower mold frame (15). In the case of pressing operation, the lower mold frame (15) is located at the first limiting part, and in the reset state, the lower mold frame (15) is located at the second limiting part.

5. The electro-hydraulic clamp with dual reset mode according to claim 4, characterized in that: The first limiting part includes a first limiting side (1241) and a second limiting side (1242) arranged opposite to each other, and two positioning top surfaces (1243). The two positioning top surfaces (1243) are respectively connected to the first limiting side (1241) and the second limiting side (1242) and are arranged symmetrically. The second limiting part includes a third limiting side (1161) and four fourth limiting sides (1162), and a positioning bottom surface (1163). The third limiting part includes a fifth limiting side (133). During the pressing operation, the first limiting side (1241) and the third limiting side (1161) are located on the same plane, and the second limiting side (1242) and the fifth limiting side (133) are located on the same plane.

6. The electro-hydraulic clamp with dual reset mode according to claim 3, characterized in that: The head cover (12) includes an upper mold portion (123), and the lower mold frame (15) includes a lower mold portion (152). The upper mold portion (123) and the lower mold portion (152) are opposite to each other. The head assembly (1) also includes two mold positioning pins and two mold positioning pushers. The two mold positioning pins are respectively connected to the head cover (12) and the lower mold frame (15), and protrude from the upper mold portion (123) and the lower mold portion (152) to position the pressing mold. The two mold positioning pushers are respectively connected to the head cover (12) and the lower mold frame (15), and are movably connected to the two mold positioning pins to adjust the distance of the two mold positioning pins protruding from the upper mold portion (123) and the lower mold portion (152).

7. The electro-hydraulic clamp with dual reset mode according to claim 6, characterized in that: The head flap (12) is provided with a first locking pin hole (125) and a first push-pull hole (126), and the lower mold frame (15) is provided with a second locking pin hole (153) and a second push-pull hole (154). The first locking pin hole (125) is provided in the upper mold part (123), the second locking pin hole (153) is provided in the lower mold part (152), the first push-pull hole (126) is provided on the end face of the head flap (12) and communicates with the first locking pin hole (125), and the second push-pull hole (154) is provided on the end face of the lower mold frame (15) and communicates with the second locking pin hole (153). The mold positioning pin includes a pin shaft (161) and a second elastic element. The two pin shafts (161) and the two second elastic elements are respectively located in the first pin hole (125) and the second pin hole (153). The second elastic element is located below the pin shaft (161). The circumferential surface of the locking pin (161) is provided with a V-shaped positioning groove (1612). The mold positioning pusher includes a conical head (1621). The mold positioning pusher adjusts the distance by which the locking pin (161) protrudes from the upper mold part (123) or the lower mold part (152) by adjusting the depth of the conical head (1621) inserted into the V-shaped positioning groove (1612).

8. The electro-hydraulic clamp with dual reset mode according to claim 7, characterized in that: The top of the pin shaft (161) is provided with a straight strip (1611), and the two strips (1611) protrude from the upper mold part (123) and the lower mold part (152) respectively. The upper mold and the lower mold of the pressing mold are provided with slots, and the strips (1611) are adapted to the slots for snapping.

9. The dual-reset mode electro-hydraulic clamp according to claim 7, characterized in that: The head flap (12) includes a first steel ball hole (127), the lower mold frame (15) includes a second steel ball hole (156), the head assembly (1) includes two mold positioning steel balls, the two mold positioning steel balls are respectively located in the first steel ball hole (127) and the second steel ball hole (156), the mold positioning steel ball includes a copper cap (163), a steel ball and a third elastic element, the third elastic element is located at the bottom of the corresponding steel ball hole, the copper cap (163) is located at the top of the corresponding steel ball hole, and the steel ball is located inside the copper cap (163) and protrudes from the copper cap (163).

10. The electro-hydraulic clamp with dual reset mode according to claim 9, characterized in that: The axis of the second locking pin hole (153) is inclined relative to the bottom surface of the lower mold frame (15). The second steel ball hole (156) is located in the lower mold part (152) and is inclined relative to the bottom surface of the lower mold frame (15). The first steel ball hole (127) is located in the upper mold part (123). After the head cover (12) is fastened, the axis of the first locking pin hole (125) is collinear with the axis of the second locking pin hole (153). The axis of the first steel ball hole (127) is collinear with the axis of the second steel ball hole (156). The axis of the second locking pin hole (153) intersects with the axis of the second steel ball hole (156).

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