A portable electric crimping tool

Abstract

The application relates to a portable electric clamping tool, which comprises an electric gun, a pincer mold outer frame, a pincer mold body, a pincer mold positioning pin and a fixing piece. The pincer mold outer frame is installed on the output end of the electric gun through a bolt, first and second installation holes are arranged through the pincer mold outer frame, the outer edges of the two sides of the pincer mold body are extended to form outer edges, the outer edges are provided with first and second positioning grooves, the pincer mold positioning pin passes through the first installation hole and is accommodated in the first positioning groove, the pincer mold body is circumferentially limited, the fixing piece comprises a fixing bolt, a fixing nut, a connecting block arranged at the tail end of the fixing nut, a pincer mold pressing plate and a first spring, the fixing bolt is arranged in the second installation hole, and the first spring provides continuous axial fastening force.

Description

Technical Field

[0001] This application belongs to the field of pipeline installation technology and relates to a portable electric clamping tool. Background Technology

[0002] In pipeline installation for building water supply, gas transmission, and fire protection engineering, press-fit connection technology is widely used due to its advantages such as quick installation, reliable connection, good sealing, and no need for open flame. This technology uses a specialized press-fit tool to apply radial pressure to the connection area of ​​the pipe fitting, which is fitted with an O-ring seal. This causes plastic deformation, tightly encasing the pipe, and simultaneously forming a hexagonal or other shaped indentation on the convex ring at the end of the fitting, thus achieving a secure connection and seal.

[0003] Common crimping tools include manual crimping tools and hydraulic crimping tools. Manual crimping tools are typically clamp-type structures that rely on manual force and leverage to crimp. However, for large-diameter pipe fittings or continuous, large-scale construction scenarios, operators need to expend enormous physical strength, easily leading to fatigue and severely impacting construction efficiency. Hydraulic crimping tools use hydraulic equipment to provide power, driving the crimping die to complete the crimping. Although they have high output force and can handle larger diameter pipes, they are not portable. Hydraulic tools typically include a separate hydraulic pump, high-pressure oil hose, and crimping gun head, making the entire system bulky and heavy, extremely inconvenient to move or relocate in confined spaces or at heights. Utility Model Content

[0004] To overcome the problems existing in related technologies, this application aims to provide a portable electric clamping tool that can improve the ease of operation and adapt to confined spaces.

[0005] This application is achieved through the following technical solution.

[0006] This technical solution provides a portable electric clamping tool, including: Electric gun; The clamp mold outer frame is installed on the output end of the electric gun by a pin, and the clamp mold outer frame is provided with a first mounting hole and a second mounting hole. The clamp mold body has two outer edges extending outward to form an outer edge, and a first positioning groove and a second positioning groove are provided on the outer periphery of the outer edge. A clamp mold positioning pin passes through a first mounting hole and is accommodated in a first positioning groove, and is used to circumferentially limit the clamp mold body. The fastener includes a fixing bolt, a fixing nut, a connecting block located at the tail end of the fixing nut, a clamping plate, and a first spring. The fixing bolt passes through the second mounting hole and provides a continuous axial tightening force with the help of the first spring. The connecting block is slidably embedded in the second positioning groove so that the clamping plate abuts against the outer wall of the clamping body, thereby axially pressing the clamping body.

[0007] This technical solution adopts a detachable design, directly assembling the clamping die body onto the clamping die frame on the electric gun, reducing the number and weight of tools and accessories. Furthermore, it facilitates the replacement of clamping die bodies of different specifications, significantly shortening the replacement time and improving the continuity and efficiency of crimping work. At the same time, the design that only requires replacing the detachable clamping die body allows for crimping connections of pipes of different specifications. When changing pipe specifications, only the clamping die body needs to be replaced, saving on tool investment.

[0008] The present invention is further configured such that the clamp mold body is formed by four mold petals connected together to form a ring structure, including two sets of adjacent first clamp molds and second clamp molds.

[0009] The present invention is further configured such that the first positioning groove and the second positioning groove are formed on the outer edge of the first clamp mold, the opening of the first positioning groove is configured to form a positioning engagement with the clamp mold positioning pin, and the clamp mold pressure plate is covered on the second positioning groove.

[0010] The present invention is further configured such that at least one positioning rod is provided on both sides of the first clamp mold, at least a portion of the positioning rod extends toward the second clamp mold, a positioning groove is provided at the corresponding position of the second clamp mold, the extension direction of the positioning groove is consistent with the opening and closing movement direction of the second clamp mold, and a positioning slider is provided at the tail end of the positioning rod, the positioning slider being slidably connected inside the positioning groove.

[0011] The present invention is further configured such that the first clamp mold and the second clamp mold are respectively provided with spring mounting grooves at their adjacent positions, and a second spring is provided inside the spring mounting groove. The two ends of the second spring abut against the first clamp mold and the second clamp mold respectively, so as to store energy when the second clamp mold is pressed and moves closer to the first clamp mold to close, and drive the second clamp mold to reset after the pressure is released.

[0012] The present invention is further configured such that the inner peripheral wall of the clamp mold body is provided with a pressing groove, and hexagonal grooves are symmetrically provided on both sides of the pressing groove.

[0013] The present invention is further configured such that both the first mounting hole and the second mounting hole are provided symmetrically about the mold outer frame, and the radial distance from the center of the first mounting hole to the inner groove wall of the mold outer frame is greater than the radial distance from the center of the second mounting hole to the inner groove wall of the mold outer frame.

[0014] The present invention is further configured such that a limiting block is provided at the tail end of the positioning slider, the size of the limiting block is larger than the rod body of the positioning slider, and is accommodated in the positioning groove, so that the positioning slider is limited in the direction of the positioning groove.

[0015] The present invention is further configured such that an arc-shaped avoidance angle is provided on the side of the clamp body that is close to the electric gun, the arc-shaped avoidance angle being used to avoid interference when the clamp body is opened and closed.

[0016] The present invention is further configured such that the connecting block is embedded inside the second positioning groove, and the connecting block is used to circumferentially limit the clamp mold body.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0018] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0019] Figure 1 This is a schematic diagram of the structure shown in one embodiment of this application; Figure 2 This is an installation schematic diagram shown in one embodiment of this application; Figure 3 This is a schematic diagram of the clamp body shown in one embodiment of this application; Figure 4 This is a schematic diagram of a fastener shown in one embodiment of this application; Figure 5 This is a schematic diagram showing the connection between the first clamping mold and the second clamping mold in one embodiment of this application; Figure 6 This is a schematic diagram of the groove structure shown in one embodiment of this application; Figure 7 This is a schematic diagram of the first clamping structure shown in one embodiment of this application; Figure 8 This is a cross-sectional view shown in one embodiment of this application; Figure 9 This is a cross-sectional view of the second clamp mold shown in one embodiment of this application.

[0020] Reference numerals: 1. Electric gun; 2. Mold frame; 21. First mounting hole; 22. Second mounting hole; 3. Pin; 4. Mold body; 5. Mold positioning pin; 6. Fixing component; 61. Fixing bolt; 62. Fixing nut; 63. Connecting block; 64. Mold pressure plate; 65. First spring; 7. First mold; 71. First positioning groove; 72. Second positioning groove; 73. Positioning rod; 74. Positioning slider; 75. Pressure groove; 76. Hexagonal groove; 77. Spring mounting groove; 78. Second spring; 8. Second mold; 81. Positioning slide groove. Detailed Implementation

[0021] The technical solutions of some embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0023] This embodiment discloses a portable electric clamping tool, such as Figures 1-9 As shown, it includes: Electric gun 1; The clamp mold outer frame 2 is installed on the output end of the electric gun 1 via a pin 3. The clamp mold outer frame 2 has a first mounting hole 21 and a second mounting hole 22 through it. The clamp mold body 4 has two outer edges extending outward to form an outer edge, and a first positioning groove 71 and a second positioning groove 72 are provided on the outer periphery of the outer edge. The clamp mold positioning pin 5 passes through the first mounting hole 21 and is accommodated in the first positioning groove 71, and is used to circumferentially limit the clamp mold body 4. The fastener 6 includes a fixing bolt 61, a fixing nut 62, a connecting block 63 located at the tail end of the fixing nut 62, a clamping plate 64, and a first spring 65. The fixing bolt 61 passes through the second mounting hole 22 and provides a continuous axial tightening force with the help of the first spring 65. The connecting block 63 is slidably embedded in the second positioning groove 72 so that the clamping plate 64 abuts against the outer wall of the clamping body 4, thereby axially pressing the clamping body 4.

[0024] It should be noted that when installing the clamp mold body 4, the clamp mold outer frame 2 is opened and closed by the electric gun 1, the clamp mold body 4 is placed on the clamp mold outer frame 2, and the clamp mold outer frame 2 is closed to simply clamp the clamp mold body 4. The position of the clamp mold body 4 is corrected by passing the clamp mold positioning pin 5 through the first mounting hole 21 and the first positioning groove 71. Then the fixing part 6 is installed to fix the clamp mold body 4 to the clamp mold outer frame 2. The clamp mold body 4 can be opened and closed by controlling the electric gun 1.

[0025] By adopting a detachable clamp mold body 4 and directly mounting the clamp mold outer frame 2 on the electric gun 1, the number and weight of tools and accessories are reduced. Furthermore, the clamp mold body 4 of different specifications is easy to disassemble and replace, which significantly shortens the replacement time and improves the continuity and efficiency of the crimping work. At the same time, the design of only needing to replace the detachable clamp mold body 4 can realize the crimping connection of pipes of different specifications. When the pipe specifications are changed, only the clamp mold body 4 needs to be replaced, which can save on tool investment.

[0026] like Figure 5 As shown, the clamping mold body 4 is composed of four interlocking mold segments forming a ring structure, including two sets of adjacent first clamping molds 7 and second clamping molds 8. It should be noted that the four-segment clamping mold body 4 has a larger opening and closing opening, and the pipe pressing is smooth and stable, making it widely applicable.

[0027] like Figure 5 and Figure 6 As shown, the first positioning groove 71 and the second positioning groove 72 are formed on the outer edge of the first clamping mold 7. The groove opening of the first positioning groove 71 is configured to form a positioning fit with the clamping mold positioning pin 5, and the clamping mold pressure plate 64 is covered on the second positioning groove 72.

[0028] It should be noted that the first positioning groove 71 is an arc-shaped opening groove located on the outer edge. Its structure corresponds to the clamp mold positioning pin 5. It can work with the clamp mold positioning pin 5 to position the clamp mold body 4 and form a circumferential limit. There is a gap between the clamp mold positioning pin 5 and the arc-shaped opening groove to facilitate the opening and closing of the clamp mold body 4.

[0029] like Figure 5 As shown, at least one positioning rod 73 is provided on both sides of the first clamping mold 7. At least a part of the positioning rod 73 extends toward the second clamping mold 8. A positioning groove 81 is provided at the corresponding position of the second clamping mold 8. The extension direction of the positioning groove 81 is consistent with the opening and closing movement direction of the second clamping mold 8. A positioning slider 74 is provided at the tail end of the positioning rod 73. The positioning slider 74 is slidably connected inside the positioning groove 81.

[0030] like Figures 7-9As shown, the first clamping mold 7 and the second clamping mold 8 are respectively provided with spring mounting grooves 77 at their adjacent positions. The spring mounting grooves 77 are provided with a second spring 78. The two ends of the second spring 78 abut against the first clamping mold 7 and the second clamping mold 8 respectively, so as to store energy when the second clamping mold 8 is pressed and moves closer to the first clamping mold 7 to close, and drive the second clamping mold 8 to reset after the pressure is released.

[0031] like Figures 5-9 As shown, the inner peripheral wall of the clamp mold body 4 is provided with a pressing groove 75, and hexagonal grooves 76 are symmetrically provided on both sides of the pressing groove 75.

[0032] like Figure 2 As shown, both the first mounting hole 21 and the second mounting hole 22 are provided symmetrically about the clamp mold outer frame 2. The radial distance from the center of the first mounting hole 21 to the inner groove wall of the clamp mold outer frame 2 is greater than the radial distance from the center of the second mounting hole 22 to the inner groove wall of the clamp mold outer frame 2.

[0033] It should be noted that the second mounting hole 22 corresponding to the fixing screw 61 of the fixing member 6 is misaligned with the corresponding second positioning groove 72. The two holes are not on the same axis, so that the fixing member 6 only connects the block 63 and the clamp mold plate 64 to the clamp mold cup body 4. Therefore, when installing and removing the clamp mold body 4, it is not necessary to completely remove the fixing member 6, so that the clamp mold cup body 4 can be removed.

[0034] like Figure 5 and Figure 6 As shown, the tail end of the positioning slider 74 is provided with a limiting block. The size of the limiting block is larger than the rod body of the positioning slider 74 and is accommodated in the positioning groove 81, so that the positioning slider 74 is limited in the direction of the positioning groove 81.

[0035] like Figure 7 As shown, the clamp body 4 has an arc-shaped avoidance angle on the side that is close to the electric gun 1. The arc-shaped avoidance angle is used to avoid interference when the clamp body 4 is opened and closed.

[0036] like Figure 3 As shown, the connecting block 63 is embedded inside the second positioning groove 72, and the connecting block 63 is used to circumferentially limit the clamp mold body 4.

[0037] Working principle: By adopting a detachable clamp mold body 4, which is directly assembled onto the clamp mold frame 2 on the electric gun 1, the number and weight of tools and accessories are reduced. Moreover, the clamp mold body 4 of different specifications is easy to disassemble and replace, which significantly shortens the replacement time and improves the continuity and efficiency of crimping work. At the same time, the design of only needing to replace the detachable clamp mold body 4 can realize the crimping connection of pipes of different specifications. When the pipe specifications are changed, only the clamp mold body 4 needs to be replaced, which can save on tool investment.

[0038] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A portable electric clamping tool, characterized in that, include: Electric gun (1); The clamp mold frame (2) is installed on the output end of the electric gun (1) by means of a pin (3). The clamp mold frame (2) has a first mounting hole (21) and a second mounting hole (22) through it. The clamp mold body (4) has two outer edges extending outward to form an outer edge, and the outer periphery of the outer edge is provided with a first positioning groove (71) and a second positioning groove (72). A clamp mold positioning pin (5) passes through a first mounting hole (21) and is accommodated in a first positioning groove (71) to circumferentially limit the clamp mold body (4). The fastener (6) includes a fixing bolt (61), a fixing nut (62), a connecting block (63) located at the tail end of the fixing nut (62), a clamping plate (64), and a first spring (65). The fixing bolt (61) passes through the second mounting hole (22) and provides a continuous axial tightening force with the help of the first spring (65). The connecting block (63) is slidably embedded in the second positioning groove (72) so that the clamping plate (64) abuts against the outer wall of the clamping body (4), thereby axially pressing the clamping body (4).

2. The portable electric clamping tool according to claim 1, characterized in that, The clamp body (4) is formed by four clamp pieces joined together to form a ring structure, including two sets of adjacent first clamp molds (7) and second clamp molds (8).

3. The portable electric clamping tool according to claim 2, characterized in that, The first positioning groove (71) and the second positioning groove (72) are opened on the outer edge of the first clamping mold (7). The opening of the first positioning groove (71) is configured to form a positioning fit with the clamping mold positioning pin (5). The clamping mold pressure plate (64) is covered on the second positioning groove (72).

4. The portable electric clamping tool according to claim 1, characterized in that, The first clamping mold (7) has at least one positioning rod (73) on both sides. At least a part of the positioning rod (73) extends toward the second clamping mold (8). The second clamping mold (8) has a positioning groove (81) at the corresponding position. The extension direction of the positioning groove (81) is consistent with the opening and closing movement direction of the second clamping mold (8). The tail end of the positioning rod (73) is provided with a positioning slider (74). The positioning slider (74) is slidably connected inside the positioning groove (81).

5. The portable electric clamping tool according to claim 2, characterized in that, The first clamping mold (7) and the second clamping mold (8) are respectively provided with spring mounting grooves (77) at their adjacent positions. The spring mounting grooves (77) are provided with a second spring (78). The two ends of the second spring (78) abut against the first clamping mold (7) and the second clamping mold (8) respectively, so as to store energy when the second clamping mold (8) is pressed and moves closer to the first clamping mold (7) to close, and drive the second clamping mold (8) to reset after the pressure is released.

6. The portable electric clamping tool according to claim 1, characterized in that, The inner peripheral wall of the clamp mold body (4) is provided with a pressing groove (75), and hexagonal grooves (76) are symmetrically provided on both sides of the pressing groove (75).

7. The portable electric clamping tool according to claim 1, characterized in that, The first mounting hole (21) and the second mounting hole (22) are both provided symmetrically with respect to the mold frame (2). The radial distance from the center of the first mounting hole (21) to the inner groove wall of the mold frame (2) is greater than the radial distance from the center of the second mounting hole (22) to the inner groove wall of the mold frame (2).

8. The portable electric clamping tool according to claim 4, characterized in that, The tail end of the positioning slider (74) is provided with a limiting block. The size of the limiting block is larger than the rod body of the positioning slider (74) and is accommodated in the positioning groove (81), so that the positioning slider (74) is limited in the direction of the positioning groove (81).

9. The portable electric clamping tool according to claim 1, characterized in that, The clamp body (4) is provided with an arc-shaped avoidance angle on the side that is close to the electric gun (1). The arc-shaped avoidance angle is used to avoid interference when the clamp body (4) is opened and closed.

10. The portable electric clamping tool according to claim 1, characterized in that, The connecting block (63) is embedded inside the second positioning groove (72), and the connecting block (63) is used to circumferentially limit the clamp mold body (4).

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