Hand-held electric bending machine

Abstract

The application discloses a handheld electric bending machine and belongs to the technical field of metal plate processing equipment, which comprises a base, a pushing structure and a die pressing head, the pushing structure is installed on the base, the die pressing head is installed on one end of the pushing structure, two plunger nails are arranged on the base and are located on the same plane and are spaced apart by a certain distance, the die pressing head comprises a pushing block, a limiting plate, an extrusion piece and an expansion piece, the transmission between the extrusion piece and the expansion piece and the scale on the limiting plate are matched with the displacement stroke of the die pressing head, in the process of bending the power grid conductor, the bending angle of the power grid conductor can be known without additionally using a scale to measure the bending angle of the power grid conductor, the handheld electric bending machine does not need to be reassembled during use, is convenient to carry and does not need to consider whether alternating current exists on the construction site.

Description

Technical Field

[0001] This invention relates to the field of metal sheet processing equipment technology, and in particular to a handheld electric bending machine. Background Technology

[0002] Handheld bending machines are bending processing equipment used for metal sheets, pipes, etc., and are characterized by portability, ease of operation, and high efficiency. They are widely used in manufacturing, construction, and maintenance industries. Currently, small bending machines are available on the market, but they are generally relatively bulky or require manual bending assistance. Most small bending machines are hydraulically driven, such as the CB-120C open-type hydraulic electric steel plate bending machine.

[0003] Existing bending machines all require AC power to drive hydraulics, but AC power is not available in every situation. Furthermore, due to the machine's weight, it is not suitable for mobile operations. There is also a risk of hydraulic leakage, resulting in high maintenance costs and limited application scenarios. Moreover, the machine usually needs to be reassembled before operation, leading to long preparation time and low ease of use and applicability. Summary of the Invention

[0004] The main objective of this invention is to provide a handheld electric bending machine that is easy to carry, does not require consideration of whether there is AC power at the construction site, is applicable to various construction locations, and can determine the bending angle of the power grid conductor without measuring it during the bending process.

[0005] To achieve the above objectives, the present invention proposes a handheld electric bending machine, comprising a base, a pushing structure, and a die pressure head, wherein the pushing structure is mounted on the base, and the die pressure head is mounted on one end of the pushing structure;

[0006] The mold press head includes a push block, a limiting plate, an extrusion member, and a telescopic member. The push block is connected to the pushing structure. The push block is provided with several receiving slots, and an extrusion member is provided in each receiving slot. The extrusion member is partially exposed outside the push block. The limiting plate is installed on the push block. The telescopic member is located in the receiving slot and abuts against the extrusion member, and is partially locked in the limiting plate. The telescopic member can extend out of the limiting plate when driven by the extrusion member.

[0007] Optionally, the plurality of receiving slots are arranged sequentially along the edge of the push block, and each receiving slot is spaced apart. Each receiving slot is provided with a baffle, which divides the receiving slot into two areas.

[0008] Optionally, the exposed length of the extrusion member in each receiving slot is different, decreasing sequentially from the top to the bottom of the push block.

[0009] Optionally, the extrusion member has a first inclined surface, and the telescopic member has a second inclined surface, with the first inclined surface and the second inclined surface fitting together.

[0010] Optionally, the extrusion member is provided with a first limiting platform and a first elastic member is sleeved on it, with one end of the first elastic member abutting against the limiting platform and the other end abutting against the baffle; the telescopic member is provided with a second limiting platform and a second elastic member is sleeved on it, with one end of the second elastic member abutting against the second limiting platform and the other end abutting against the limiting plate.

[0011] Optionally, the limiting plate is provided with a plurality of positioning holes, each positioning hole corresponding to each receiving groove, and a scale is provided next to the positioning hole, the size of the scale decreasing sequentially from the top end to the bottom end of the push block.

[0012] Optionally, the pushing structure includes a transmission component, a driving component, and a reduction gearbox. The reduction gearbox includes a housing, a first gear, and a second gear. The first gear is connected to the driving component, and the second gear is connected to the transmission component. The first gear and the second gear mesh with each other, and the housing covers the first gear and the second gear.

[0013] Optionally, the transmission component is provided with a push rod, which is connected to the mold pressure head.

[0014] Optionally, the handheld electric bending machine also includes a housing located on the base and covering the transmission component, gearbox, and drive component.

[0015] Optionally, the housing is provided with a battery compartment for holding a battery for providing power to the drive unit, and the housing is also provided with a handle with a control switch, which is electrically connected to the drive unit.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The handheld electric bending device of the present invention, by setting a mold pressure head, the mold pressure head includes a push block, a limiting plate, an extrusion component and a telescopic component. According to the displacement stroke of the mold pressure head, the transmission between the extrusion component and the telescopic component and the scale on the limiting plate, the bending angle of the power grid wire can be known without the need to use a ruler to measure the bending angle of the power grid wire during the bending process.

[0018] 2. Compared with bending machines that use AC power to drive hydraulics, this application uses lithium batteries as the driving component, which is not only lightweight, but also eliminates the need to consider whether there is AC power at the construction site, does not require reassembly during use, and is easy to carry. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the handheld electric bending machine of the present invention;

[0021] Figure 2 This is an internal schematic diagram of an embodiment of the handheld electric bending machine of the present invention;

[0022] Figure 3 This is a partial internal structural diagram of an embodiment of the handheld electric bending machine of the present invention;

[0023] Figure 4 for Figure 2 A schematic diagram of a planar structure of the die press head;

[0024] Figure 5 for Figure 4 A schematic diagram of a structure in which some of the middle parts are installed on the base;

[0025] Figure 6 for Figure 4 A schematic diagram of the structure of the middle limiting plate.

[0026] Explanation of icon numbers:

[0027]

[0028]

[0029] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0032] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0033] This invention proposes a handheld electric bending machine 100.

[0034] Please see Figure 1-6 In one embodiment of the present invention, the handheld electric bending machine 100 includes a base 10, a mold pressing head 30 and a pushing structure 20. The pushing structure 20 is mounted on the base 10, and the mold pressing head 30 is mounted on one end of the pushing structure 20.

[0035] In this embodiment, the base 10 is provided with two plunger pins 11, which are on the same plane and spaced apart by a certain distance. The die head 30 is located between the two plunger pins 11 and faces the two plunger pins 11. The die head 30 can move towards or away from the two plunger pins 11 under the drive of the pushing structure 20. It can be understood that the power grid wire 60 to be bent is placed between the two plunger pins 11 and the die head 30, and the die head 30 pushes the power grid wire 60 out from the gap between the two plunger pins 11 to bend the power grid wire 60.

[0036] In one embodiment of the present invention, the mold press head 30 includes a push block 31, a limiting plate 32, an extrusion member 33, and a telescopic member 34. The push block 31 is connected to the push structure 20. The push block 31 is provided with a plurality of receiving grooves 31a. Each receiving groove 31a is provided with an extrusion member 33. The extrusion member 33 is partially exposed outside the push block 31. The limiting plate 32 is installed on the push block 31. The telescopic member 34 is located in the receiving groove 31a and abuts against the extrusion member 33, and is partially stuck in the limiting plate 32. The telescopic member 34 can extend out of the limiting plate 32 when driven by the extrusion member 33.

[0037] In this embodiment, the top of the push block 31 is arc-shaped, and the area connected to the arc-shaped surface is rectangular. The plurality of receiving grooves 31a are arranged sequentially along the rectangular edge of the push block 31, and each receiving groove 31a is spaced apart. A baffle is provided in the receiving groove 31a, and the baffle 311 divides the receiving groove 31a into two areas. The exposed length of the extrusion member 33 in each receiving groove 31a is different, decreasing sequentially from the top to the bottom of the push block 31. Correspondingly, the length of the extrusion member 33 also decreases from the top to the bottom of the push block 31.

[0038] The method for determining the length of the extrusion member in different receiving slots 31a is as follows: In this embodiment, the extrusion member 33 closest to the top of the push block 31 represents a 120° bend in the power grid conductor, decreasing sequentially to 90°, 60°, and 45°. Since the length of each receiving slot 31a is the same, and the extrusion members 33 at each level are in the same position in the receiving slot 31a, and their travel distance in the receiving slot 31a is the same, which is the distance between the end of the extrusion member 33 and the side wall of the receiving slot 31a, the power grid conductor 60, bent at a 120° angle, is pressed against the arc end of the push block 31. At this time, the extrusion member 33 is squeezed into the extended straight line of the arc surface of the push block 31. The length of the extrusion member 33 is the sum of the distance between the side wall of the receiving slot 31a away from the power grid conductor 60 and the inner wall of the power grid conductor 60 and the travel distance of the extrusion member 33 in the receiving slot 31a. Similarly, the length of the extrusion member 33 in subsequent slots is also determined by this method.

[0039] The extrusion member 33 is provided with a first inclined surface 332, and the telescopic member 34 is provided with a second inclined surface 342. The first inclined surface 332 and the second inclined surface 342 are in contact. The extrusion member 33 is provided with a first limiting platform 331 and a first elastic member 35. One end of the first elastic member 35 abuts against the first limiting platform 331, and the other end abuts against the baffle 311. The diameter of the first limiting platform 331 is larger than the diameter of the extrusion member 33, which can prevent the extrusion member 33 from flying out of the receiving groove 31a. The telescopic member 34 is provided with a second limiting platform 341 and a second elastic member 36. One end of the second elastic member 36 abuts against the second limiting platform 341, and the other end abuts against the limiting plate 32. The diameter of the second limiting platform 341 is larger than the diameter of the telescopic member 34, which can prevent the telescopic member 34 from flying out of the limiting plate 32. Both the first elastic member 35 and the second elastic member 36 can be springs, but are not limited to them.

[0040] Understandably, in the initial state, the first elastic member 35 abuts against the first limiting platform 331. Under the elastic force of the first elastic member 35, the pressing member 33 is always exposed outside the extended straight line of the arc surface of the pushing block 31. Under the elastic force of the second elastic member 36, the telescopic member 34 is always retracted under the limiting plate 32. When the power grid conductor 60 is pressed, as is well known, during the pressing process, as the stroke increases, the angle of the bending of the power grid conductor 60 gradually decreases. When the power grid conductor 60 is bent to a certain angle, the inner wall of the power grid conductor 60 presses the pressing member 33 closest to the top of the pushing block 31. During the movement of the pressing member 33, the first inclined surface 332 presses the second inclined surface 342, causing the telescopic member 34 to move upward. When the pressing member 33 retracts into the extended straight line of the arc surface of the pushing block 31, the corresponding telescopic member 34 extends out of the limiting plate 32.

[0041] The limiting plate 32 is provided with a plurality of positioning holes 321, each positioning hole 321 corresponding to each receiving groove 31a. A scale is provided next to each positioning hole 321, with the scale decreasing sequentially from the top to the bottom of the pushing block 31. For example, in this embodiment, the scale next to the positioning hole closest to the top of the pushing block 31 is 120°, decreasing sequentially to 90°, 60°, and 45°. It can be understood that when the power grid conductor 60 is bent to a certain angle, its inner wall presses against the pressing member 33 closest to the top of the pushing block 31. When the pressing member 33 is completely retracted into the arc surface of the pushing block 31, the telescopic member 34 successfully... If the wire 60 protrudes from the corresponding positioning hole 321, it means that the included angle of the wire 60 is 120°. If the wire 60 continues to bend, the inner wall of the wire 60 continues to contract inward until it squeezes the extrusion member 33 at the next position, so that the extrusion member 33 at this position is completely contracted into the extension line of the arc surface of the push block 31. The telescopic member 34 at the corresponding position is also exposed outside the limiting plate 32 after being squeezed, which corresponds to a 90° scale. At this time, the included angle of the wire 60 bending is 90°. And so on, so that the bending angle of the wire 60 can be known without further measurement of the wire 60.

[0042] In one embodiment of the present invention, the pushing structure 20 includes a transmission component 23, a driving component 21, and a reduction gearbox 22. The reduction gearbox 22 includes a housing 221, a first gear 70, and a second gear 71. The first gear 70 is connected to the driving component 21, and the second gear 71 is connected to the transmission component 23. The first gear 70 and the second gear 71 mesh with each other. The housing 221 covers the first gear 70 and the second gear 71.

[0043] The transmission component 23 is provided with a push rod 13, and the mold pressure head 30 is mounted on the push rod 13. The transmission component 23 includes a protective shell 24 and a transmission part 25. The protective shell 24 is connected to the chassis 221 and is sleeved on the transmission part 25 to protect it. The base 10 is provided with a reinforcing block 12, which wraps around the protective shell 24 to improve tensile strength and ensure that the rotating part 25 can provide a stable thrust to the push rod 13.

[0044] In this embodiment, the transmission part 25 can be a ball screw, which is a transmission method that achieves rotation or linear motion by having balls roll on a lever. The transmission part 25 is connected to the second gear 71, and the driving member 21 is connected to the first gear 70. The first gear meshes with the second gear 71. The driving member 21 drives the transmission part 25 to move through the first gear 70 and the second gear 71. The push rod 13 is connected to the transmission part 25 and can move towards or away from the two plunger pins 11 under the drive of the transmission part 25. The driving member 21 can be a common high-power motor. The first gear 70 has more teeth than the second gear 71, and their meshing transmission achieves deceleration of the transmission part 25. It is understandable that after the rotational speed of the drive component 21 is reduced by the gear transmission of the first gear 70 and the second gear 71, the speed transmitted to the transmission part 25 has become slow. When the drive component 21 rotates forward, the guide rail slider 252 moves towards the two plunger pins 11, so that the push rod 13 drives the mold pressure head 30 to move slowly, squeeze the power grid wire 60, and bend the power grid wire 60.

[0045] In one embodiment of the present invention, the handheld electric bending machine 100 further includes a housing 50, which is located on the base 10 and covers the transmission component 23, the reduction gearbox 22, and the drive component 21. The housing 50 has a battery compartment 52 for holding a battery to provide power to the drive component 21. A lithium battery can be used to power the drive component 21, eliminating the need to consider the availability of AC power at the construction site. No temporary assembly or adjustment is required during use; it can be used directly by turning it on and is suitable for various construction locations. The housing 50 also has a handle 51 for convenient handheld operation. The handle 51 has a control switch 53, which is electrically connected to the drive component 21. The control switch 53 can control the forward and reverse rotation and the opening and closing of the drive component 21.

[0046] Working principle: The power grid wire 60 is placed between the two plungers 11 on the die head 30. The drive component 21 is activated, which drives the transmission component 23 to move. This causes the push rod 13 to push the die head 30 against the gap between the two plungers 11 and push out the power grid wire 60, bending it. When the inner walls of both ends of the power grid wire 60 are pressed against the pressing component 33 closest to the top of the push block 31, the corresponding telescopic component 34 is exposed outside the limiting plate 32. At this time, the bending angle of the power grid wire 60 has reached 120°. If the power grid wire 60 continues to bend, the power grid wire 60... The inner wall continues to contract inward until it squeezes the extrusion member 33 at the next position, so that the extrusion member 33 at this position is completely contracted into the extension line of the arc surface of the push block 31. The telescopic member 34 at the corresponding position is also exposed outside the limiting plate 32 after being squeezed. According to its corresponding scale, the bending angle of the power grid wire 60 is 90° at this time. By analogy, during the bending process of the power grid wire 60, there is no need to measure the power grid wire 60 separately to know the bending angle of the power grid wire 60. After the bending is completed, the driving member 21 is driven to make the mold pressure head 30 retract, and the bent power grid wire 60 can be removed.

[0047] In practical use, the bending angle of the power grid wire 60 can be determined by the displacement stroke of the die head 30, the transmission between the extrusion part 33 and the telescopic part 34, and the scale on the limiting plate 32. This handheld electric bending machine 100 weighs only about 3 kg, making it easy to carry. Powered by a lithium battery, it eliminates the need to consider the availability of AC power at the construction site, thus meeting the needs of various construction locations. This device is typically used for copper and aluminum wires with a diameter of 10 mm. 2 -240mm 2 The operation involves bending the power grid conductors at 45-120°.

[0048] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A hand-held electric bending machine characterized in that, The device includes a base, a pushing structure, and a mold head. The pushing structure is mounted on the base, and the mold head is mounted on one end of the pushing structure. The mold head includes a push block, a limiting plate, an extrusion component, and a telescopic component. The push block is connected to the pushing structure and has several receiving slots. Each receiving slot contains an extrusion component, which is partially exposed outside the push block. The limiting plate is mounted on the push block. The telescopic component is located within the receiving slots and abuts against the extrusion component, and is partially engaged within the limiting plate. The telescopic component can extend beyond the limiting plate when driven by the extrusion component. The plurality of receiving slots are arranged sequentially along the edge of the push block, and each receiving slot is spaced apart. Each receiving slot is provided with a baffle, which divides the receiving slot into two areas. The exposed length of the extrusion member in each receiving slot is different, decreasing sequentially from the top to the bottom of the push block.

2. The handheld electric bending machine as described in claim 1, characterized in that: The extrusion member has a first inclined surface, and the telescopic member has a second inclined surface, with the first inclined surface and the second inclined surface fitting together.

3. The handheld electric bending machine as described in claim 2, characterized in that: The extrusion member is provided with a first limiting platform and a first elastic member sleeved on it. One end of the first elastic member abuts against the first limiting platform and the other end abuts against the baffle. The telescopic member is provided with a second limiting platform and a second elastic member sleeved on it. One end of the second elastic member abuts against the second limiting platform and the other end abuts against the limiting plate.

4. The handheld electric bending machine as described in claim 1, characterized in that: The limiting plate is provided with a number of positioning holes, each positioning hole corresponding to each receiving groove, and a scale is provided next to the positioning hole, the size of the scale decreasing from the top to the bottom of the push block.

5. The handheld electric bending machine as described in claim 1, characterized in that: The pushing structure includes a transmission component, a driving component, and a reduction gearbox. The reduction gearbox includes a housing, a first gear, and a second gear. The first gear is connected to the driving component, and the second gear is connected to the transmission component. The first gear and the second gear mesh with each other. The housing covers the first gear and the second gear.

6. The handheld electric bending machine as described in claim 5, characterized in that: The transmission component is equipped with a push rod, which is connected to the mold pressure head.

7. The handheld electric bending machine as described in claim 5, characterized in that: The handheld electric bending machine also includes a housing located on the base, which covers the transmission component, gearbox, and drive component.

8. The handheld electric bending machine as described in claim 7, characterized in that: The housing is provided with a battery compartment for holding a battery to provide power to the drive unit. The housing is also provided with a handle with a control switch, which is electrically connected to the drive unit.

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