Electric belt tightening machine

Abstract

The utility model discloses an electric belt tightening machine which comprises a shell, a cut-off mechanism, a tightening mechanism and a speed control switch, the cut-off mechanism, the tightening mechanism and the speed control switch are installed on the shell, the cut-off mechanism comprises a cut-off tool apron, a cut-off tool and a cut-off tool bar, and the tightening mechanism comprises a tightening motor and a rotating shaft; the speed regulation switch is connected with the controller, the rotating speed of the tightening motor is controlled through the speed regulation switch, after binding is conducted through a binding belt, the tail of the binding belt firstly penetrates into the binding belt channel in the front of the cutting tool apron, penetrates through the cutting opening and then penetrates out of the binding belt channel in the rear to enter the rotating shaft, and the tightening motor controls the rotating shaft to rotate to pull the binding belt to penetrate through the cutting tool apron and tighten the binding belt. The cut-off tool is driven to rotate by rotating the cut-off tool bar, and the cut-off tool cuts off the tail of the ribbon in the cut-off opening. According to the utility model, the cable tie can be intelligently tightened, meanwhile, the shearing operation is quickly performed, the machine has multiple purposes, the operation time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tightening devices, in particular to an electric tightening machine. Background Art

[0002] A cable tie, as the name implies, is a band for bundling things, designed with a non-retractable function, which can only be tightened more and more, and there are also detachable cable ties. It is divided into metal cable ties and plastic cable ties, and is commonly used for cables of electromechanical products, computer, electronic products, automotive wiring harnesses, etc. At present, the operation method of bundling with cable ties is that after an operator tightens the bundle, the redundant cable tie is cut off with a pair of pliers or scissors, thus completing the function of bundling and fixing. However, if the tightening of the cable tie is only by manual pulling, it cannot be tightened quickly, and the operator needs to repeatedly confirm that there is no loosening. The effect of manual tightening is not good, and the manual operation time for shearing is long, which is difficult to meet the high-efficiency operation requirements nowadays. Therefore, it is necessary to design an electric tightening machine that can replace manual operation, can tighten the cable tie intelligently, and can perform shearing operation quickly, with multiple functions in one machine, reducing the operation time and improving the work efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide an electric tightening machine.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An electric tightening machine includes a housing, a cutting mechanism, a tightening mechanism and a speed control switch installed on the housing. A controller is provided inside the housing. The cutting mechanism includes a cutting knife seat, a cutting knife and a cutting knife rod. The cutting knife seat is installed on one side of the housing, and is provided with a communicating cutting opening and a cable tie passage. The cutting knife is rotatably installed in the cutting opening, and one end thereof extends outside the cutting knife seat. One end of the cutting knife rod is installed with the cutting knife seat;

[0006] The tightening mechanism includes a tightening motor and a rotating shaft. The tightening motor is built in the housing. The rotating shaft is arranged on the housing and is located at the rear end of the cutting knife seat, and the rotating shaft is driven to rotate by the tightening motor;

[0007] The speed control switch is arranged on the housing and is connected to the controller. The rotation speed of the tightening motor is controlled by the speed control switch. After the cable tie is bundled, its tail end first penetrates into the cable tie passage at the front part of the cutting knife seat, passes through the cutting opening, and then passes out of the cable tie passage at the rear part and enters the rotating shaft. The rotating shaft is driven to rotate by the tightening motor to pull the cable tie through the cutting knife seat. After the cable tie is tightened, the cutting knife is driven to rotate by rotating the cutting knife rod, and the cutting knife cuts off the tail end of the cable tie in the cutting opening.

[0008] Further, the housing includes a main body portion, a substrate, and a hand-held portion. The main body portion and the hand-held portion are arranged vertically. The hand-held portion is provided with a switch opening, and the speed control switch is movably installed in the switch opening through an elastic reset member. The substrate is disposed on the side wall of the main body portion, and an extension portion is left at the front end of the main body portion. The main body portion and the substrate are provided with axially aligned holes, and the rotating shaft passes through the axially aligned holes and is connected to the tightening motor inside the main body portion.

[0009] Further, the housing is composed of a left housing and a right housing spliced together from left to right.

[0010] Further, it further includes a battery holder. The bottom of the hand-held portion is provided with a battery installation opening, and the battery holder is detachably installed in the battery installation opening. The battery holder is internally provided with a storage battery and is connected to the controller to supply power to it and the tightening motor.

[0011] Further, the substrate is provided with a knife body hole in the extension portion that is axially aligned with the cutting opening. The cutting knife is rotatably installed in the knife body hole through a limiting gasket. Its cutting head is disposed at the cutting opening of the cutting knife seat, and its cutting body is outside the cutting knife seat. The cutting body is provided with a mating opening, and the cutting knife rod is matingly installed in the mating opening. By rotating the cutting knife rod, the cutting knife is driven to rotate, and the cutting knife rotates at the cutting opening to cut the cable tie.

[0012] Further, the cutting knife rod is matingly installed in the mating opening from top to bottom or from bottom to top; when the cutting knife rod is matingly installed in the mating opening from top to bottom, by rotating the cutting knife rod, it approaches the housing clockwise; when the cutting knife rod is matingly installed in the mating opening from bottom to top, by rotating the cutting knife rod, it approaches the housing counterclockwise.

[0013] Further, the substrate and the main body portion and the cutting knife seat are respectively provided with a plurality of axially aligned screw holes. The substrate is installed on the main body portion through screws, and the cutting knife seat is detachably installed on the extension portion of the substrate through screws. Different specifications of cutting knife seats can be replaced by disassembling the cutting knife seat.

[0014] Further, an elastic hoop is sleeved outside the cutting body, and the elastic hoop is installed with the cutting knife rod. The elastic hoop is used to push the cutting knife rod to reset and move away from the housing.

[0015] Further, the controller is provided with an overcurrent protection module, which monitors the current magnitude of the tightening motor and feeds it back to the controller to control the switch of the tightening motor.

[0016] Further, the rotating shaft is provided with a cross-shaped opening rotating shaft or a rice-shaped opening rotating shaft.

[0017] After adopting the above technical solutions, compared with the background technology, the present utility model has the following advantages:

[0018] 1. After the cable tie is tied, its tail first passes through the cable tie channel at the front of the cutting knife seat, through the cutting opening, and then out of the cable tie channel at the rear and into the rotating shaft. The user presses the speed control switch to control the rotation speed of the tightening motor. The rotating shaft rotates to pull the cable tie through the cutting knife seat, replacing manual operation to tighten the cable tie. Subsequently, the cutting knife is driven to rotate by rotating the cutting knife rod, and the cutting knife cuts the tail of the cable tie within the cutting opening, realizing the operations of automatically tightening the cable tie and quickly cutting it instead of manual operation, reducing the manual operation time and improving the work efficiency.

[0019] 2. The present utility model detachably installs the cutting knife seat through the substrate. By switching different specifications of cutting knife seats, the requirements for different lengths of the remaining cable tie tails after cutting are met, and the use requirements in different scenarios are flexibly satisfied.

[0020] 3. The rotating shaft of the present utility model is a cross-shaped open rotating shaft or a rice-shaped open rotating shaft, which can quickly and flexibly insert the cable tie tail passing through the cutting knife seat into the rotating shaft from multiple angles, solving the drawback that it is difficult to position after the rotating shaft rotates quickly.

[0021] 4. The present utility model is provided with an overcurrent protection module in the controller. By monitoring and protecting the magnitude of the current during tightening, it can automatically cut off the power after tightening. On the one hand, there is no need for manual observation of whether it is tightened, and on the other hand, it protects the tightening motor from damage caused by overcurrent, improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is another installation schematic diagram of the cutting knife rod of the present utility model;

[0024] Figure 3 is a schematic diagram of the exploded structure of the present utility model.

[0025] DESCRIPTION OF THE REFERENCE NUMERALS:

[0026] Outer shell 1; Cutting mechanism 2; Tightening mechanism 3; Speed control switch 4; Battery seat 5; Controller 11; Main body part 12; Substrate 13; Hand-held part 14; Extension plate 131; Cutting knife seat 21; Cutting knife 22; Cutting knife rod 23; Cutting opening 211; Cable tie channel 212; Tightening motor 31; Rotating shaft 32. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] It should be noted that in the present utility model, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the devices or components of the present utility model must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0029] Embodiment

[0030] Cooperate Figures 1 to 3 As shown, the present utility model discloses an electric strap tightener, which includes a housing 1, a cutting mechanism 2, a tightening mechanism 3 and a speed control switch 4 installed on the housing 1.

[0031] A controller 11 is provided inside the housing 1, which can also be a control main board.

[0032] The cutting mechanism 2 includes a cutting knife seat 21, a cutting knife 22 and a cutting knife rod 23. The cutting knife seat 21 is installed on one side of the housing 1, and is provided with a communicating cutting opening 211 and a tie strap channel 212. The cutting opening 211 is a circular structure, and the tie strap channel 212 is a horizontal channel. The cutting knife 22 is rotatably installed in the cutting opening 211, and one end thereof extends outside the cutting knife seat 21. One end of the cutting knife rod 23 is installed with the cutting knife seat 21.

[0033] The tightening mechanism 3 includes a tightening motor 31 and a rotating shaft 32. The tightening motor 31 is built in the housing 1, and the rotating shaft 32 is arranged on the housing 1 and is placed at the rear end of the cutting knife seat 21, and the rotating shaft 32 is driven to rotate by the tightening motor 31.

[0034] The speed control switch 4 is arranged on the housing 1 and is connected to the controller 11. The rotation speed of the tightening motor 31 is controlled by the speed control switch 4. After the tie strap is bundled, its tail first penetrates into the tie strap channel 212 at the front of the cutting knife seat 21, passes through the cutting opening 211, and then passes out of the tie strap channel 212 at the rear and enters the rotating shaft 32. The rotating shaft 32 is controlled by the tightening motor 31 to rotate to pull the tie strap through the cutting knife seat 21. After the tie strap is tightened, the cutting knife rod 23 is rotated to drive the cutting knife 22 to rotate, and the cutting knife 22 cuts the tail of the tie strap in the cutting opening 211.

[0035] The housing 1 includes a main body part 12, a base plate 13 and a hand-held part 14. The main body part 12 and the hand-held part 14 are arranged up and down. The hand-held part 14 is provided with a switch opening, and the speed control switch 4 is movably installed in the switch opening through an elastic reset member. The base plate 13 is arranged on the side wall of the main body part 12, and a protruding part 131 is left at the front end of the main body part 12. The main body part 12 and the base plate 13 are provided with an axially aligned hole, and the rotating shaft 32 passes through the hole and is connected to the tightening motor 31 inside the main body part 12.

[0036] The elastic reset member of the present embodiment is preferably a spring or a reset hoop, which is arranged in the hand grip 14, and the end is installed with the regulating switch. When the regulating switch is pressed down, the reset elastic member is squeezed, and the speed regulating switch 4 is pushed out of the switch port after being released. The speed regulating switch 4 of the present embodiment is a travel switch, and its travel change is fed back to the controller 11, thereby controlling the speed change of the tightening motor 31. The more it is pressed down, the faster the speed, and vice versa.

[0037] The housing 1 is composed of a left housing and a right housing joined together, and the joining and fixing method is preferably screw mounting and fixing.

[0038] The present embodiment also includes a battery holder 5. A battery mounting port is provided at the bottom of the grip portion 14. The battery holder 5 can be detachably mounted on the battery mounting port. A limit card block is provided in the battery mounting port. Elastic card plates and card blocks are provided on both sides of the battery holder 5. The elastic card blocks are arranged on the left and right sides and inserted into the battery mounting port. The elastic card plates are engaged with the internal limit card blocks through the card blocks. To remove it, just press the two elastic card plates inward at the same time, and the card blocks will be separated from the limit card blocks. The battery holder 5 has a built-in battery and is connected to the controller 11 to power it and the tightening motor 31.

[0039] The base plate 13 is provided with a blade hole at the extension portion 131 which is opposite to the cutting opening 211. The cutting knife 22 is rotatably mounted in the blade hole through a limiting gasket. The cutting head is arranged at the cutting opening 211 of the cutting knife seat 21. The cutting knife body is arranged outside the cutting knife seat 21. The cutting knife body is provided with an insertion opening. The cutting knife rod 23 is inserted and installed in the insertion opening. The cutting knife 22 is driven to rotate by rotating the cutting knife rod 23. The cutting knife 22 rotates at the cutting opening 211 to cut the cable tie.

[0040] The cutting knife rod 23 is inserted and installed in the insertion opening from top to bottom or from bottom to top; when the cutting knife rod 23 is inserted and installed in the insertion opening from top to bottom, the cutting knife rod 23 is rotated and it approaches the shell 1 clockwise; when the cutting knife rod 23 is inserted and installed in the insertion opening from bottom to top, the cutting knife rod 23 is rotated and it approaches the shell 1 counterclockwise.

[0041] The substrate 13, the main body 12 and the cutting knife seat 21 are respectively provided with a plurality of aligned screw holes. The substrate 13 is mounted on the main body 12 by screws, and the cutting knife seat 21 is detachably mounted on the extension portion 131 of the substrate 13 by screws. The cutting knife seat 21 can be replaced with a cutting knife seat 21 of different specifications by disassembling the cutting knife seat 21. The cutting knife seat 21 can be detachably mounted by the substrate 13, and by switching the cutting knife seats 21 of different specifications, the requirements of different lengths of the tail margin after cutting are met, and the use requirements in different scenarios are flexibly met. Among them, different specifications correspond to different structures of the cutting knife seats 21, which can be triangular, square or circular. By replacing the front cable tie channel 212 of different lengths, the use requirements of different length margins can be met.

[0042] An elastic hoop is sleeved outside the body of the cutting knife 22. The elastic hoop is installed with the cutting knife rod 23. The cutting knife rod 23 is pushed to reset and move away from the housing 1 through the elastic hoop. In this embodiment, the main body portion 12 is provided with a limit protrusion at the front end. One end of the elastic hoop cooperates with the limit protrusion, and the elastic hoop is fixed through the limit protrusion. It can be fixed by adhesion, insertion or screw installation. The other end cooperates with the cutting knife rod 23. When the cutting knife rod 23 is rotated, the elastic hoop is squeezed. After releasing, the elastic hoop pushes it back to reset.

[0043] The controller 11 is provided with an overcurrent protection module. By monitoring the current magnitude of the tightening motor 31 through it, the feedback is given to the controller 11 to control the switch of the tightening motor 31. By monitoring and protecting the current magnitude, it can automatically cut off the power after tightening. On the one hand, there is no need for manual observation of whether it is tightened. On the other hand, it protects the tightening motor 31, avoids damage caused by overcurrent, and improves the service life.

[0044] The tightening motor 31 in this embodiment can be a right-angle motor. The right-angle motor directly drives the rotation of the rotating shaft 32, or it can also be a structure of a motor cooperating with a reducer. The motor drives the reducer, and the reducer drives the rotation of the rotating shaft 32. The motor can choose a brushless motor.

[0045] The overcurrent protection module in this embodiment is an external overcurrent protector or an overcurrent protection circuit is provided on the panel of the controller 11. By adjusting the magnitude of the maximum overcurrent protection, different maximum tightening force requirements can be adjusted. At the same time, when the tightening force reaches the maximum value set by the current, the motor stops rotating, avoiding the burning out of the tightening motor 31, and also avoiding the strong impact of the gears and screws of the reducer, and extending their service life.

[0046] Compared with the mechanical method, that is, adjusting the tightening force by a spring and adjusting the distance of the gears of the reducer to move to avoid greater impact of the gears, in this embodiment, the tool structure can be made simpler by the current adjustment method, making the tool smaller in volume, lighter in weight and longer in service life.

[0047] The rotating shaft 32 is provided with a cross-shaped opening rotating shaft 32 or a star-shaped opening rotating shaft 32.

[0048] After the cable tie is tied in this embodiment, its tail first passes through the cable tie channel 212 at the front of the cutting knife seat 21, passes through the cutting port 211, and then passes through the cable tie channel 212 at the rear and enters the rotating shaft 32. The user presses the speed control switch 4 to control the rotation speed of the tightening motor 31. The rotating shaft 32 rotates to pull the cable tie through the cutting knife seat 21, replacing manual operation to tighten the cable tie. Subsequently, the cutting knife 22 is driven to rotate by rotating the cutting knife rod 23, and the cutting knife 22 cuts the tail of the cable tie in the cutting port 211, realizing the operation of automatically tightening the cable tie and quickly cutting it instead of manual operation, reducing the manual operation time and improving the work efficiency.

[0049] As described above, it is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An electric tape tightener, characterized in that: It includes a housing, a cutting mechanism, a tightening mechanism and a speed control switch mounted on the housing. A controller is provided inside the housing. The cutting mechanism includes a cutting knife seat, a cutting knife and a cutting knife rod. The cutting knife seat is mounted on one side of the housing, and is provided with a communicating cutting opening and a tie strap channel. The cutting knife is rotatably mounted in the cutting opening, and one end thereof extends outside the cutting knife seat. One end of the cutting knife rod is mounted on the cutting knife seat. The tightening mechanism includes a tightening motor and a rotating shaft. The tightening motor is built in the housing. The rotating shaft is provided on the housing and is placed at the rear end of the cutting knife seat, and the rotating shaft is driven to rotate by the tightening motor. The speed control switch is provided on the housing and is connected to the controller. The speed of the tightening motor is controlled by the speed control switch. After the tie strap is tied, its tail first penetrates into the tie strap channel at the front of the cutting knife seat, passes through the cutting opening, and then passes out of the tie strap channel at the rear and enters the rotating shaft. The rotating shaft is rotated by the tightening motor to pull the tie strap through the cutting knife seat. After the tie strap is tightened, the cutting knife is driven to rotate by rotating the cutting knife rod. The cutting knife cuts the tail of the tie strap in the cutting opening.

2. The electric tape tightener according to claim 1, characterized in that: The housing includes a main body part, a base plate and a hand-held part. The main body part and the hand-held part are arranged up and down. The hand-held part is provided with a switch opening. The speed control switch is movably mounted in the switch opening through an elastic reset member. The base plate is provided on the side wall of the main body part and has an extending part at the front end of the main body part. The main body part and the base plate are provided with an axially aligned hole. The rotating shaft passes through the axially aligned hole and is connected to the tightening motor inside the main body part.

3. The electric tightening machine according to claim 2, wherein: The housing is composed of a left housing and a right housing spliced together left and right.

4. The electric tape tightener according to claim 2, characterized in that: It further includes a battery holder. A battery installation opening is provided at the bottom of the hand-held part. The battery holder is detachably mounted in the battery installation opening. The battery holder is internally provided with a storage battery and is connected to the controller to supply power to it and the tightening motor.

5. The electric tape tightener according to claim 2, characterized in that: The base plate is provided with a knife body hole at the extending part that is axially aligned with the cutting opening. The cutting knife is rotatably mounted in the knife body hole through a limit gasket. Its cutting knife head is arranged in the cutting opening of the cutting knife seat, and its cutting knife body is placed outside the cutting knife seat. The cutting knife body is provided with an insertion opening. The cutting knife rod is inserted and mounted in the insertion opening. The cutting knife is driven to rotate by rotating the cutting knife rod, and the cutting knife rotates in the cutting opening to cut the tie strap.

6. The electric tape tightener according to claim 5, wherein: The cutting knife rod is inserted and mounted in the insertion opening from top to bottom or from bottom to top. When the cutting knife rod is inserted and mounted in the insertion opening from top to bottom, when the cutting knife rod is rotated, it approaches the housing clockwise. When the cutting knife rod is inserted and mounted in the insertion opening from bottom to top, when the cutting knife rod is rotated, it approaches the housing counterclockwise.

7. The electric tape tightener according to claim 5, characterized in that: The base plate and the main body part and the cutting knife seat are respectively provided with a plurality of axially aligned screw holes. The base plate is mounted on the main body part through screws. The cutting knife seat is detachably mounted on the extending part of the base plate through screws. Different specifications of cutting knife seats can be replaced by disassembling the cutting knife seat.

8. An electric tape tightener according to claim 6, characterized in that: An elastic hoop is sleeved outside the cutting knife body. The elastic hoop is mounted on the cutting knife rod. The elastic hoop is used to push the cutting knife rod to reset and move away from the housing.

9. The electric tape tightener according to claim 1, wherein: The controller is provided with an overcurrent protection module. It monitors the magnitude of the current of the tightening motor and feeds it back to the controller to control the switch of the tightening motor.

10. An electric belt tightener according to claim 1, characterized in that: The rotating shaft is provided with a cross-shaped opening rotating shaft or a rice-shaped opening rotating shaft.

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