WO2021253477A1 - Pipe fitting crimping device - Google Patents

Abstract

A pipe fitting crimping device, comprising an outer positioning frame (1). Two or more arc-shaped extrusion modules (a) distributed in a circular array at intervals are provided in the outer positioning frame. All the arc-shaped extrusion modules surround and form a crimping space (k) allowing for the insertion of pipe fittings. All the arc-shaped extrusion modules are mounted to an inner movable elastic scaling surrounding frame (b) located in the outer positioning frame to allow for the scaling of the crimping space formed by all the arc-shaped extrusion modules. A linear propelling mechanism (c) for driving the inner movable elastic scaling surrounding frame to scale in a front-rear direction so as to drive the crimping space to scale is provided on the outer positioning frame. Therefore, the use is more flexible.

Description

Pipe fitting withholding device Technical field

The invention relates to the technical field of pipeline production equipment, in particular to a pipe fitting crimping device.

Background technique

Existing pipeline connection construction will use crimping equipment. For example, the Chinese patent application number 201910152521.1 discloses a crimping machine, including a crimping machine body, the bottom of the crimping machine body is welded and fixed with support legs, and the crimping The top of the machine body is fixedly connected with a driving hydraulic pump, the output end of the driving hydraulic pump is connected with a driving hydraulic cylinder, and the telescopic shaft of the driving hydraulic cylinder is welded and fixed with a transmission shaft, and the end of the transmission shaft away from the driving hydraulic cylinder passes through The hinge seat is connected with the crimping transmission device, and the crimping and squeezing device is arranged inside the crimping transmission device. The crimping machine, when the squeezing movable rod moves along the arc-shaped channel to approach the casing, can drive multiple wedge-shaped squeezing blocks to close and squeeze. The equivalent transmission force provided by the crimping transmission device can be a wedge-shaped squeezing block Provides a stable radial squeezing force, which can make the seal and buckle connection between the rubber tube and the iron sleeve closer, reduce the occurrence of defective products, and improve the buckling quality of the rubber tube.

Another example is a crimping machine disclosed in the Chinese Patent Application No. 201921312168.0, which includes a box body and a crimping machine head. The crimping machine head is located above the box body and is fixedly connected to the box body. The box body is arranged There is an oil inlet pump and an oil storage tank connected with the pipeline of the crimping machine head, and a drive motor for driving the oil inlet pump is also arranged in the box body, wherein: the box body is provided with a tube clamp seat, and the tube clamp seat is provided There is a clamping groove, the central axis of the clamping groove is arranged coaxially with the central axis of the crimping head, the clamping groove is provided with a number of elastic buckles, and the hose joint is provided with buckles that are matched with the elastic buckles groove. This solution can fix the hose joints and eliminate the safety hazards of manual operation through the setting of the clamp tube seat, the elastic buckle and the buckle groove. At the same time, the coaxially arranged clamping groove and the crimping head can also ensure the accuracy of crimping and improve The quality of the finished product has the beneficial effects of simple structure, convenient operation and strong practicability.

The aforementioned crimping machine has certain limitations and can only be used in fixed workshops and other places, and is not suitable for use in the field, and has poor flexibility in use.

technical problem

The aforementioned crimping machine has certain limitations and can only be used in fixed workshops and other places, and is not suitable for use in the field, and has poor flexibility in use.

Technical solutions

The purpose of the present invention is to provide a more flexible pipe crimping device.

The above technical purpose of the present invention is achieved through the following technical solutions: a pipe crimping device, including an outer positioning frame, in which two or more arc-shaped extrusion modules distributed in a circumferential array are arranged in the outer positioning frame. All the arc-shaped extrusion modules surround and form a crimping space for pipe fittings to be inserted into, and all the arc-shaped extrusion modules are installed in the outer positioning frame for the crimping space formed by all the arc-shaped extrusion modules to zoom in and out. The movable elastic zooming enclosing frame is provided with a linear advancing mechanism that drives the inner movable elastic zooming enclosing frame to zoom in a front-to-rear direction to drive the buckling space to zoom.

As a preference of the present invention, the inner movable elastic zooming and enclosing frame includes a plurality of module bases that surround and form a surrounding frame structure, and the module bases elastically abut against each other.

As a preference for the present invention, the arc-shaped extrusion module is installed on the inner arc-shaped surface of the corresponding module base.

As a preference of the present invention, the outer positioning frame is formed by splicing the front half frame and the rear half frame.

As a preference of the present invention, at least one of the upper and lower splices of the front half frame and the rear half frame is detachably connected.

As a preference of the present invention, a drive plate capable of moving in the front and rear directions and pushing the inner movable elastic zooming enclosing frame to zoom is provided between the outer positioning frame and the inner movable elastic zooming enclosing frame.

As a preference of the present invention, the linear propulsion mechanism is a jack, and the piston rod of the linear propulsion mechanism extends back and forth through the outer positioning frame and is connected to the drive plate.

As a preference of the present invention, the driving board is connected with a feed pointer that follows the driving board to travel forward and backward.

As a preference of the present invention, the linear pushing mechanism is provided on both front and rear sides of the outer positioning frame.

As a preference of the present invention, the left and right sides of the outer positioning frame are respectively installed with a left baffle for limiting the left side of the inner movable elastic zooming frame and a right baffle for limiting the right side of the inner movable elastic zooming frame. plate.

Beneficial effect

1. It can be used by hand, making it more flexible to use.

2. The operation is simple and convenient, suitable for use in the wild and mountainous areas and other places with harsh conditions.

3. The crimping effect is good, the disassembly and assembly are convenient, and the structure is stable and reliable.

Description of the drawings

FIG. 1 is a schematic diagram of the three-dimensional structure of Embodiment 1 with the spring omitted.

FIG. 2 is a schematic diagram of the three-dimensional structure of FIG. 1 from another perspective.

Fig. 3 is a front view of Fig. 2.

Fig. 4 is a front view of the structure in Fig. 1 after the spring is installed.

FIG. 5 is a schematic diagram of the three-dimensional structure of the outer positioning frame 1 in the structure in FIG. 1 after a part of the structure is removed.

Fig. 6 is a three-dimensional schematic diagram of the part enclosed by the inner movable elastic zoom enclosing frame in the structure in Fig. 1.

FIG. 7 is a schematic diagram of the three-dimensional structure of the inner and outer positioning frame 1 of the structure in FIG. 1 after being disassembled.

Fig. 8 is a three-dimensional schematic diagram of the structure in Fig. 1 with left and right baffles.

FIG. 9 is a schematic diagram of the three-dimensional structure of the structure in FIG. 8 after a part of the structure is removed.

Fig. 10 is a schematic diagram of the structure in embodiment 1 when crimping.

FIG. 11 is a schematic diagram of the arc-shaped extrusion module a in the embodiment 1 being installed on the module base m.

12 is a schematic diagram of a three-dimensional structure of one of the structures of Embodiment 2. FIG.

Embodiments of the present invention

The following specific embodiments are merely explanations of the present invention, and are not intended to limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contribution as needed, but as long as the rights of the present invention The scope of the requirements is protected by the patent law.

Embodiment 1, as shown in Figs. 1-11, a pipe crimping device, comprising an outer positioning frame 1, in which two or more arc-shaped extrusion modules a distributed in a circular array at intervals are arranged in the frame of the outer positioning frame 1. All the arc-shaped extrusion modules a surround the crimping space k into which the pipe is inserted. The existing pipe crimping equipment also forms a circular crimping space through crimping dies in a circular array, and some are also called die holes. Put in pipe fittings and joints, etc. The existing crimping machine is a kind of hydraulic equipment used to crimp the pipe assembly. It applies the shrinking force to the matched metal joint through the mold of the crimping machine, and firmly crimps the metal joint on the matched high-pressure oil pipe or Brake pipes, oil pipes, air-conditioning pipes, power pipes on automobiles. The crimping machine is suitable for the crimping of various mechanical high and low pressure oil pipes, air pipes, water pipes, cable joints, automobile air conditioning pipes, automobile power steering pipes, oil pipes, gasoline supply pipes, as well as construction accessories and daily hot water pipes. It is widely used Vehicles, construction machinery, hydraulic machinery, welding and cutting equipment and other industries, of course, can also be used for the connection between two pipe fittings. In short, the crimping machine can insert different pipe fittings or joints into the mold hole. By driving the crimping mold to shrink to reduce the mold hole, the pipe fittings or joints that need to be connected together are crimped and fastened together. However, the existing equipment is large-scale equipment, which is usually placed in the production workshop and other indoor places for operation. It is not easy to take out. It is necessary to take the pipe fittings back indoors for operation, and it cannot be timely in outdoor places. Carry out the withholding operation of pipe fittings, and this kind of existing equipment usually uses hydraulic oil pump to directly drive each mold to radially shrink to complete the withholding. The structural requirements of the oil pump and the periphery of the mold are relatively large, and it is not convenient to move to the field. , So there is a special need for a crimping device suitable for outdoor operation and convenient to use. The structure adopted in this application is not an equipment-type structure. The outer positioning frame 1 in this embodiment surrounds the arc-shaped extrusion modules a, and the following design is made at the same time: all the arc-shaped extrusion modules a are installed outside In the positioning frame 1, an inner movable elastic zooming enclosing frame b for zooming and scaling of the crimping space k formed by all the arc-shaped extrusion modules a, and the inner movable elastic zooming enclosing frame b is a module formed by all the arc-shaped extrusion modules a The periphery of the assembly and each arc-shaped extrusion module a are installed in the frame of the inner movable elastic zooming enclosing frame b, and the inner movable elastic zooming enclosing frame b itself can be zoomed, that is, the inner movable elastic zooming enclosing frame b also follows The module assembly of all the arc-shaped extrusion modules a can be contracted in the radial direction, thereby driving all the arc-shaped extrusion modules a to contract radially to make the crimping space k smaller, so that the pipes in the crimping space k are compressed. To fasten to joints or other pipe fittings. But this inner movable elastic zooming and enclosing frame b is a structural frame that can be elastically compressed and expanded in the circumferential direction. When contracted, it overcomes the elastic force to gather and buckle the pipe, and relies on the elastic force to reset when it is opened. The major difference in the application is that: the outer positioning frame 1 is provided with a linear propulsion mechanism c that drives the inner movable elastic zooming enclosing frame b to zoom in the front and rear directions to drive the crimping space k to zoom, and this application adopts It is zoomed by linear drive on the radial surface of the crimping space k, that is, the linear advancing mechanism c advances and retreats through front and back, that is, the inner movable elastic zooming enclosing frame b can advance forward, relying on the outer positioning frame 1 The limit on the front side of the frame itself, and the structure of the inner movable elastic scaling surrounding the circumferential elastic connection of the frame b, finally make each arc-shaped extrusion module a close in the circumferential direction and make the crimping space k smaller to crimp the pipe . Of course, the linear propulsion mechanism c can also be pushed backward, and the outer positioning frame 1 is limited on the rear side; or there can be a linear propulsion mechanism c at the front and rear, and the inner movable elastic zoom enclosing frame can be pushed forward and backward together. The contraction of b. The choice of linear propulsion mechanism c is more diverse, and many hand-held propulsion devices can be selected, which is convenient for outdoor carrying and operation.

Then, the specific inner movable elastic zooming enclosing frame b structure may include several module bases m surrounding to form a surrounding frame structure. The module bases m elastically abut against each other, and the elastic abutment is through the module base m. There is a spring to achieve this. As far as possible, the springs are extended in the circumferential direction of the crimping space k.

In order to better fit the arc-shaped extrusion module a and the module base m in close contact, the inner side of the module base m is designed to be arc-shaped, which can be called the inner arc-shaped surface m0. In this way, the arc-shaped extrusion module a is installed on the inner arc surface m0 of the corresponding module base m and fixed against it. The arc extruded module a can be fixed by the existing installation method, and the arc extruded module a is usually designed as a fan-shaped block structure. , The outer surface of the arc-shaped extrusion module a is integrally formed with a mounting head z. The mounting head z can be inserted into the module base m radially. The module base m needs to open a mounting hole z0 outward along the inner surface of the inner arc surface m0 Insert the mounting head z, and then open the corresponding jacks z1 extending in the axial direction on the mounting head z and the module base m, insert the two jacks z1 through the pin z2 and connect them in series, and squeeze the module in an arc shape. a The base can be locked to the module base m. This is also a conventional fixing method, and it can also be fixed by screwing. This method is convenient for disassembly and assembly, that is, the arcs of different sizes can be replaced according to actual needs. The squeeze module a is used for crimping pipes of different sizes. The inner and outer directions referred to in this embodiment are the inner and outer directions of the outer positioning frame 1.

Since the inner movable elastic zooming enclosing frame b is linearly pushed for zooming, in order to cover the arc-shaped extrusion module a as much as possible for driving, it is preferable that the outer positioning frame 1 and the inner movable elastic zooming enclosing frame Between b, there is a drive plate q that can travel in the forward and backward directions and push the inner movable elastic zoom enclosing frame b to zoom. The drive plate q adopts a semi-enclosed structure, similar to a C-shaped plate, with the opening facing forward or backward If it is driven forward, then the opening is forward, if it is driven backward, then the opening is backward, which is used to enclose a part of the module base m driving the inner movable elastic scaling frame b to achieve better The contraction effect of the ground linear drive. The drive plate q is driven after being connected by a linear propulsion mechanism c. The linear propulsion mechanism c can be a jack, and more preferably a hand-held hydraulic jack. The piston rod c0 extends back and forth through the outer positioning frame 1 and is connected to the drive plate q, and a corresponding frame is formed on the outer positioning frame 1. The sleeve-type mounting seat 100 communicates with the inside and the outside. The linear propulsion mechanism c adopts the structure of a jack to optimize into a cylindrical outer casing c1. The piston rod c0 is the power output rod of the large oil cylinder in the outer casing c1, and the outer casing c1 is Installed and fixed in the mounting seat 100, the outer housing c1 is mounted on the side facing away from the outer positioning frame 1 with a fixed handle c2 extending forward and backward, and the hydraulic drive rod c3 of the jack is the small piston rod in the small oil cylinder, which is in the up and down direction Extend and connect it to a movable handle c4. The fixed handle c2 can be straight forward and backward. Then the movable handle c4 needs to have a slight upward inclination to facilitate the up and down movement, so that the operator can hold it. Holding the fixed hand grip c2, by manipulating the movable hand grip c4 to drive the hydraulic drive rod c3 to expand and supply oil so that the piston rod c0 advances and drives the inner movable elastic scaling and enclosing frame b to contract, so that each arc-shaped extrusion module a contracts to buckle the pipe. After the crimping is completed, just flip the oil return valve rod on the jack or operate a similar oil return valve control button to return and reset, and the piston rod c0 can return to its original state, and the inner movable elastic zoom enclosing frame b will also Restore to the original open state, including the reset of the arc-shaped extrusion module a will also be realized at the same time. In addition, the driving board q can also be connected with a feed pointer j that follows the driving board q forward and backward. According to the travel distance of the feed pointer j, the radial compression of the arc extrusion module a can be obtained. In order to determine the size of the crimping diameter, of course, this also needs to be measured according to the size of the arc extrusion module a used for crimping pipes of different sizes.

The above solution is further optimized below. The outer positioning frame 1 can be formed by splicing the front half frame 11 and the rear half frame 12. The front half frame 11 is a half enclosing frame with an opening facing backward, and the rear half frame 12 is a half enclosing frame with an opening facing forward. At least one of the upper joint and the lower joint of the front half frame 11 and the rear half frame 12 is detachably connected. This design makes the outer positioning frame 1 easy to disassemble and assemble, convenient for maintenance and replacement of arc-shaped extrusion modules a of different sizes. The specific splicing structure can be adopted: the front half frame 11 and the rear half frame 12 pass between the lower parts of the left and right sides. They are connected by riveting, and their upper parts can be detachably connected by pins 120 that are inserted and removed on the left and right. Of course, both the upper and lower splicing parts can adopt a detachable structure to realize splicing.

On this basis, a more effective implementation case is provided: the rear half frame 12 is provided with a drive plate q, and the front half frame 11 is integrally formed with a front limit surround plate y with an opening facing backward. In the initial state, the drive plate q It is arranged opposite to the front limit enclosing plate y and leaves a space so that the driving plate q can advance forward. The front limit enclosing plate y is fixed and non-acting as a part of the front half frame 11, and the front limit enclosing plate y and the driving board q form another variable movable frame in the outer positioning frame 1, but these two are not connected together, but in a discrete state. The front side limit surrounds the board y and the driving board q as a whole It is used to cover the inner movable elastic zoom enclosure frame b. The mobility between the front limit enclosure plate y and the drive plate q is mainly reflected in the activity of the drive plate q. The front and back travel of the drive plate q makes the front side limit The position enclosing plate y and the driving plate q form this discrete frame which can be linearly contracted to drive the inner movable elastic scaling to contract the enclosing frame b to buckle the pipe.

In order to better realize the crimping, in the above solution, it is preferable to use 8 arc-shaped extrusion modules a and distributed in a circular array. In the initial state, adjacent arc-shaped extrusion modules a are distributed at intervals. Then use 8 module bases m to distribute and install the 8 arc-shaped extrusion modules a. The locations of the 8 module bases m installation map are called North base m1, Northeast base m2, East base m3, Southeast base m4, South base m5, Southwest base m6, West base m7, and Northwest base m8, respectively. These eight base bases Some parts can also be designed into an arc-shaped block structure similar to the arc-shaped extrusion module a. The adjacent base parts of the eight bases are elastically connected by circumferential springs, and the ends of the adjacent bases are provided with corresponding springs. The end is inserted into the hole. This design is similar to the existing design. Then the inner movable elastic zooming enclosing frame b of this structure is a ring-shaped zooming frame. The contraction in the radial direction will not be very balanced, because this linear method is to squeeze through the spring, and the linear force, the spring will not be perfectly contracted at the beginning of the circumferential direction, so in different directions There will be a big difference in the shrinkage of the spring, especially for large diameter pipe fittings, the effect will be a little worse, the front and rear sides will shrink more first, and the upper side will shrink more when the upper side shrinks less. After the crimping work, there is a large difference in the amount of shrinkage between the crimping positions of the pipe fittings, which will bring hidden dangers to the structural tightness, stability, and safety of the pipe fittings connection. Of course, this implementation can still be carried out in this application. For example, there is no problem in situations where safety requirements such as water pipes are insufficient. Generally, the end of crimping also needs to be tested. The above-mentioned method of this application can basically meet the crimping and connection of pipes in many industries. In addition, because the above-mentioned structure is With this structural design, the inner covering area of the movable frame formed by the drive plate q and the front limit surround plate y should also be as round as possible, so that the drive plate q can better cover a part of the module base m is pushed forward to make the inner movable elastic scaling and enclosing frame b shrink and buckle, that is, the inner surfaces of the driving plate q and the front limit enclosing plate y are both arc-shaped and arranged oppositely. In addition, the spring used in the design of the existing module base m can be called the inner coil spring n1 according to the position, and the corresponding spring end insertion hole can be called the inner coil spring end insertion hole n10.

In order to further enhance the effect of crimping, this application makes further improvements, so that the inner covering area of the movable frame formed by the driving plate q and the front side limit enclosing plate y is in a positive octagonal shape. Then, the driving plate q and the front side limit Each inner side surface of the position enclosing plate y will be some flat limit abutting surfaces, then the inner movable elastic scaling enclosing frame b also needs to be a matching structure with an octagonal periphery, which is composed of the driving plate q and The octagonal movable frame formed by the front limit enclosing plate y is tightly wrapped. Therefore, the following design is made, and the outer side parts of the north base m1, the east base m3, the south base m5, and the west base m7 are respectively integrally connected with an upper abutment seat p1, a rear abutment seat p2, a lower abutment seat p3, and a front abutment seat. The seat p4, here, the east base m3 is here regarded as the module base on the rear side. In addition, the integrated connection mentioned can be realized by processes such as integral molding, casting, forging, stamping and bending. The upper abutment seat p1, the rear abutment seat p2, the lower abutment seat p3, and the front abutment seat p4 are surrounded to form an octagonal frame structure and are elastic octagonal frame structure, the upper abutment seat p1, the rear abutment The octagonal structure formed by the seat p2, the lower abutment seat p3, and the front abutment seat p4 is an elastic and scalable octagonal structure. The upper abutment seat p1, the rear abutment seat p2, the lower abutment seat p3, and the The front abutment seat p4 abuts against the inner side of the octagonal movable frame formed by the driving board q and the front side limit enclosing board y. In addition, the upper abutment seat p1, the rear abutment seat p2, the lower abutment seat p3, and the front abutment seat p4 are spaced apart at the positions of the four hypotenuses of the octagonal frame formed by them, and springs are also arranged at the spaced positions, The upper abutment seat p1, the rear abutment seat p2, the lower abutment seat p3, and the front abutment seat p4 can be elastically scaled, and the respective hypotenuse pp of each abutment seat at its two ends can be placed on the drive plate q and The oblique side of the octagonal movable frame formed by the front limit enclosing plate y moves on the inner side, and the oblique side of the octagon is the chamfered part. The two oblique side portions pp of the adjacent ends of the two adjacent abutment seats abut against the outer surface of the module base m at an oblique side, so that the abutment seats can be scaled along the oblique side and can also be The module base m between the module bases m against which they are located is zoomed in the radial direction, so that the zooming operation is completed, the force is more balanced, and the arc-shaped extrusion modules a are better able to shrink and buckle together toward the center. Roll back and reset. Here is an example. For example, the module base m corresponding to the hypotenuse part pp adjacent to the upper abutment seat p1 and the rear abutment seat p2 is the northeast base m2, and their hypotenuse pp abuts on the outer circle of the northeast base m2 On the arc surface, here, the abutment surfaces of the hypotenuse pp of the upper abutment seat p1 and the rear abutment seat p2 are set as arc surfaces that match the shape of the outer arc surface of the northeast base m2 as much as possible. In addition, for the spring design, the spring between the hypotenuse part pp of the abutting seat p1 and the rear abutting seat p2 is on the outside of the inner coil spring n1, so it can be called the outer coil spring n2, and then the abutting seat p1 and The hypotenuse portion of the rear abutment seat p2 is provided with an outer ring spring n2 in the interval at the hypotenuse, while the upper abutment seat p1 and the hypotenuse portion pp of the rear abutment seat p2 are provided with corresponding outer coil spring ends. The hole n20 should not extend in the same direction as the extending direction of the hypotenuse. It can be seen from the above design that the drive plate q can cover nearly half of the inner movable elastic zoom enclosing frame b, and can drive the module to shrink and buckle more evenly in the radial direction.

Further, the piston rod c0 of the linear propulsion mechanism c may be connected to the vertical side portion q1 of the driving plate q and intersect vertically preferentially. The mounting seat 100 is also to be formed on the vertical side portion q1 of the rear half frame 12. The upper horizontal edge part q2 of the drive plate q can be connected with the feed pointer j, and the rear half frame 12 is provided with a travel groove j0 for the feed pointer j to pass up and down and move forward and backward. At the same time, in the second half The frame 12 can be engraved or fixed with a dial j1 to facilitate measurement.

The mold-related structures involved in the entire device are usually made of metal materials, such as steel. The outer positioning frame 1, the drive plate, etc. can also be made of steel, or can also be made of hard plastic or the like.

To further optimize the structure, the left and right sides of the outer positioning frame 1 are respectively installed with a left baffle d1 for limiting the left side of the inner movable elastic zooming enclosing frame b and a left baffle d1 for limiting the right side of the inner movable elastic zooming enclosing frame b. Right baffle d2. This kind of baffle can be screwed on the left and right sides of the outer positioning frame 1 to prevent the module base m in the inner movable elastic zoom enclosing frame b from sliding out of the outer positioning frame 1 in the left-right direction.

Due to the aforementioned detachable splicing structure, there will be the following problems. Due to the design of the aforementioned structure, the north base m1 and the south base m5 are positioned in the middle of the front and rear of the outer positioning frame 1. When designed as the front half frame 11 and the rear half frame 12 When the splicing structure is broken, the entire north base m1 and the south base m5 may fall off or expose half of the base outside the frame. Therefore, for further design, the north base m1 and its integrally connected upper abutment seat p1 can be used as The overall module seat is divided into two, and a Z-shaped splicing seam f can be formed between the front and rear. After the current half frame 11 and the rear half frame 12 are split by a pin, the front half frame 11 and the rear half frame 12 can be compared. The half of the base and the abutment base are well stored for easy maintenance and replacement of parts, etc. This structure can also be adopted for the south base m5.

Embodiment 2, as shown in Figure 12, differs from embodiment 1 in the design of linear propulsion mechanism c. Embodiment 1 also mentions that the number of linear propulsion mechanisms c can be more than one, and it can be positioned outside the The front and rear sides of the frame 1 are designed with the linear propulsion mechanism c, so the requirement for the front half of the frame 11 is that the mounting seat 100 and the corresponding linear propulsion mechanism c are also required, and secondly, the front side limit The structure of the surrounding plate y should be removed, and the front limit surrounding plate y should be replaced by another drive plate q with an opening facing back. The drive plate is not connected to the front half frame 11, and the drive plate q is in the front half frame. 11 and the inner movable elastic zoom enclosing frame b can move forwards and backwards, the linear propulsion mechanism c is operated backwards, and the linear propulsion mechanism c can be used to push the drive plate q to the crimping space k both front and rear. The center travels, thereby driving the contraction of the inner movable elastic zooming and enclosing frame b to complete the work of crimping the pipe, and then retracting to return to the original position. Two or two people can work at the same time, which is more convenient and the force can be optimized.

The device in this application is very suitable for outdoors. The length and width can be controlled at 544mm*204mm, and the weight and weight can also be controlled within 10kg. Especially for the use of small pipe fittings, the effect is very good, for example, the pipe diameter is 5-100mm If the pipe fitting between is too large, the effect may be poor, because the handheld device will be made larger, and the force required to be applied will also become greater. If it exceeds a certain limit, it may not be suitable for handheld outdoor use.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Anyone familiar with the technical field can easily think of various equivalents within the technical scope disclosed by the present invention. Modifications or replacements, these modifications or replacements should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (10)

1. A pipe crimping device, which is characterized in that it comprises an outer positioning frame (1), and two or more arc-shaped extrusion modules (a) distributed in a circumferential array are arranged in the frame of the outer positioning frame (1). The arc-shaped extrusion module (a) surrounds and forms a crimping space (k) for the insertion of the pipe, and all the arc-shaped extrusion modules (a) are installed in the outer positioning frame (1) for all the arc-shaped extrusions The crimping space (k) formed by the pressing module (a) is an inner movable elastic scaling enclosing frame (b) for scaling, and the outer positioning frame (1) is provided with the inner movable elastic scaling enclosing frame (b) which drives in the front-to-rear direction ) A linear advancing mechanism (c) zooming in and out to drive the crimping space (k) to zoom in and out.
2. A pipe crimping device according to claim 1, characterized in that: the inner movable elastic zooming enclosing frame (b) comprises a plurality of module bases (m) that surround and form a surrounding frame structure, and the module bases (m) Between the elastic support.
3. The pipe crimping device according to claim 2, wherein the arc-shaped extrusion module (a) is installed at the inner arc-shaped surface (m0) of the corresponding module base (m).
4. The pipe crimping device according to claim 1, wherein the outer positioning frame (1) is formed by splicing the front half frame (11) and the rear half frame (12).
5. The pipe crimping device according to claim 4, characterized in that: at least one of the upper and lower splices of the front half frame (11) and the rear half frame (12) is detachably connected.
6. A pipe crimping device according to claim 4, characterized in that: between the outer positioning frame (1) and the inner movable elastic zoom enclosing frame (b) is provided that can travel in the forward and backward directions and push the The inner active elastic zoom surrounds the frame (b) zooming drive board (q).
7. The pipe crimping device according to claim 6, characterized in that: the linear propulsion mechanism (c) is a jack, and the piston rod (c0) of the linear propulsion mechanism (c) extends back and forth through the outer positioning Frame (1) and connect with the drive board (q).
8. The pipe crimping device according to claim 6, characterized in that: the driving plate (q) is connected with a feed amount pointer (j) that follows the driving plate (q) forward and backward.
9. The pipe crimping device according to claim 1, characterized in that: the front and rear sides of the outer positioning frame (1) are each provided with the linear pushing mechanism (c).
10. The pipe crimping device according to claim 1, characterized in that: the left and right sides of the outer positioning frame (1) are respectively installed with left stoppers for limiting the left side of the inner movable elastic zooming frame (b). A plate (d1) and a right baffle (d2) that restricts the right side of the frame (b) to the right side of the inner movable elastic zoom frame (b).