A semi-automatic binding device for reinforcing steel

Abstract

The utility model relates to a reinforcing steel bar binding technical field, is a reinforcing steel bar semi -automatic binding device, it includes binding machine body, the handle, the front push trigger, the back buckle trigger, the back end button and the winding reel, the lower clamping rod and upper clamping rod with guide slot in the inside are installed to the front end of binding machine body, is equipped with silk feeding device, shearing device, screwing device, silk feeding motor, shearing motor, screwing motor and circuit board in binding machine body inside, silk feeding motor is connected with silk feeding device. The utility model is reasonable and compact in structure, convenient to use, it holds more comfortable and convenient through the pistol type handle, controls silk feeding motor start -stop through the back end button, controls shearing motor start -stop through the front push trigger, controls screwing motor start -stop through the back buckle trigger, can conveniently replace quick -change type lithium cell through battery card slot, can conveniently realize the replacement of winding reel through the wire reel card slot, can also realize the iron wire winding, has the characteristics of safe, labor -saving, simple, efficient.

Description

Technical Field

[0001] This utility model relates to the field of rebar tying technology, specifically a semi-automatic rebar tying device. Background Technology

[0002] Rebar tying is a necessary step in the construction of reinforced concrete structures. When tying rebars, it is usually necessary to bend the tie wire into a tying loop and place the tying loop on the intersection of the rebars. Then, use pliers or a tying device to twist the opening of the tie wire into a tying head.

[0003] Chinese patent document CN214272975U discloses a handheld rebar tying device for building construction. The device includes a main body with a first button, a second button, and a third button installed sequentially from left to right on its top. A lower clamping rod 8 and an upper clamping rod 9 are fixedly installed on the left end of the main body. Guide grooves 7 are fixedly installed on the inner sides of the lower clamping rod 8 and the upper clamping rod 9. A first partition, a second partition, and two third partitions are fixedly installed on the inner wall of the main body. In this handheld rebar tying device, a first gear drives a shearing blade to move vertically up and down. Upward movement cuts the wire 15 lying across the shearing blade, while downward movement returns it to its initial position without affecting the subsequent feeding of the wire 15. This completes automatic cutting and tying, improving worker efficiency and eliminating the safety hazard of hand injuries by eliminating the need for direct hand contact with the wire 15. While this handheld rebar tying device can be used for rebar tying in building construction, it has the following problems in actual use: 1. Holding the device for a long time is quite strenuous, and the three buttons for operation are not only inconvenient to use, but also easily cause injury to the user's hand, posing a safety hazard; 2. Replacing the battery is cumbersome and inconvenient, which affects work efficiency; 3. Replacing the wire on the winding wheel is time-consuming and laborious, affecting work efficiency. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a semi-automatic rebar tying device that overcomes the shortcomings of the prior art. It can effectively solve the problems of the existing handheld rebar tying equipment, such as the difficulty in holding it, the inconvenience of using it by button operation, the cumbersome steps of changing the battery and the wire on the winding wheel, and the inconvenience of operation, which affect the work efficiency.

[0005] The technical solution adopted by this utility model is as follows: a semi-automatic rebar tying device, including a tying machine body, a handle, a front push trigger, a rear pull trigger, a rear button, and a winding reel. The front end of the tying machine body is equipped with a lower clamping rod and an upper clamping rod with guide grooves on their inner sides. The tying machine body contains a wire feeding device, a cutting device, a twisting device, a wire feeding motor, a cutting motor, a twisting motor, and a circuit board. The wire feeding motor is connected to the wire feeding device and can feed iron wire into the guide groove. The cutting motor is connected to the cutting device and can cut the iron wire. The twisting motor is connected to the twisting device and can twist and tie the end of the iron wire. The wire feeding motor, cutting motor, and twisting motor are electrically connected to the circuit board. The rear of the tying machine body has a reel cavity with openings at the top and rear ends, corresponding to the reel. The binding machine body on both sides of the cavity has wire reel slots and a winding reel for winding iron wire. The winding reel is wrapped with iron wire and rotatably installed in the wire reel slot. The lower rear end of the binding machine body has a handle. The upper front side of the handle has a trigger guard. The front of the trigger guard has a push trigger, and the rear of the trigger guard has a pull trigger. The upper rear side of the handle has a rear button for controlling the start and stop of the wire feeding motor. The front of the push trigger has a shear switch for controlling the start and stop of the shearing motor. The rear of the pull trigger has a rotary switch for controlling the start and stop of the turning motor. The rear button, shear switch, and rotary switch are electrically connected to the circuit board. The lower end of the handle has a battery slot and a quick-change lithium battery is installed.

[0006] The following are further optimizations and / or improvements to the technical solution applied for:

[0007] Furthermore, as a preferred embodiment, the binding machine body at the upper positions of the left and right ends of the winding reel is provided with an arc-shaped baffle. The two ends of the arc-shaped baffle are respectively provided with ear holes and are fixedly installed on the binding machine body with screws. The middle part of the arc-shaped baffle is provided with an arc-shaped locking block. The width of the arc-shaped locking block is adapted to the reel slot and is locked in the reel slot.

[0008] Furthermore, preferably, the winding reel includes a reel cylinder, a core body, a left shaft head, a left retaining plate, a right shaft head, and a right retaining plate. The core body is fitted inside the inner cavity of the reel cylinder. The core body is fixed to the reel cylinder by radial pins. The left retaining plate is fixed to the left part of the reel cylinder by a left countersunk screw and the left shaft head. The right retaining plate is fixed to the right part of the reel cylinder by a right countersunk screw and the right shaft head. The left shaft head includes a winding square head, a left shaft chuck, a left shaft neck section, and a left shaft square section. The winding square head, left shaft chuck, left shaft neck section, and left shaft square section are connected as a whole from left to right. The winding square head is located on the left side of the binding machine body. The outer diameter of the left shaft chuck is larger than the width of the reel groove. A left bearing is fitted on the outside of the left shaft neck section. The left end of the reel cylinder has a square countersunk hole that matches the left shaft square section. The center of the left retaining plate has a... The left shaft has a square hole that matches the left shaft square section. The left shaft square section is fitted into the left shaft square hole and the shaft cylinder square countersunk hole. The left end of the left shaft head has a left shaft countersunk hole at its center, and a left countersunk screw is installed in the left shaft countersunk hole. The right shaft head includes a right shaft chuck, a right shaft journal section, and a right shaft square section. The right shaft chuck, right shaft journal section, and right shaft square section are connected as a whole from right to left. The right shaft chuck is located on the right side of the binding machine body. The outer diameter of the right shaft chuck is larger than the width of the spool groove. A right bearing is fitted on the outside of the right shaft journal section. The right end of the spool cylinder has a shaft cylinder square countersunk hole that matches the right shaft square section. The center of the right disc has a right shaft square hole that matches the right shaft square section. The right shaft square section is fitted into the right shaft square hole and the shaft cylinder square countersunk hole. The right end of the right shaft head has a right shaft countersunk hole at its center, and a right countersunk screw is installed in the right shaft countersunk hole.

[0009] Furthermore, as a preferred embodiment, the automatic rebar binding device further includes a wire winding handle. One end of the wire winding handle is provided with a handle square hole that can be adapted to the winding square head of the winding reel. The wire winding handle is fitted onto the winding square head through the handle square hole and can drive the winding reel to rotate. The other end of the wire winding handle is equipped with a handle sleeve through two bearings, and the two bearings are spaced apart along the axial direction of the handle sleeve.

[0010] Furthermore, as a preferred embodiment, the port of the square hole of the winding handle is provided with a chamfer.

[0011] This utility model has a reasonable and compact structure and is easy to use. Its pistol-style grip makes it more comfortable and convenient to hold. The wire feeding motor is controlled by the rear button, the shearing motor is controlled by the front trigger, and the twisting motor is controlled by the rear trigger. The battery slot allows for easy replacement of the quick-change lithium battery, and the wire spool slot allows for easy replacement of the winding spool. It can also wind iron wire and has the characteristics of safety, labor saving, simplicity and high efficiency. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 for Figure 1 Enlarged cross-sectional view of section AA;

[0014] Figure 3 for Figure 1 A magnified schematic diagram of the main view of the wire reel stopper;

[0015] Figure 4 This is a schematic diagram of the main cross-sectional structure of the wire-winding rocker handle 26 of this utility model.

[0016] Legend: 1 is the body of the binding machine; 101 is the spool cavity; 2 is the handle; 3 is the forward push trigger; 4 is the rear pull trigger; 5 is the rear button; 6 is the winding spool; 601 is the spool cylinder; 6011 is the square countersunk hole of the cylinder; 6012 is [missing information]; 602 is the shaft core; 603 is the left shaft head; 6031 is the winding square head; 6032 is the left shaft chuck; 6033 is the left shaft journal section; 6034 is the left shaft square section; 6035 is the left shaft countersunk hole; 604 is the left stop plate; 6041 is the left plate square hole; 605 is the right shaft head; 6051 is the right shaft chuck; 6052 is the right shaft journal section. 6053 is the right shaft square section, 6054 is the right shaft countersunk hole, 606 is the right stop plate, 6061 is the right plate square hole, 607 is the radial pin, 7 is the guide groove, 8 is the lower clamping rod, 9 is the upper clamping rod, 10 is the wire feeding motor, 11 is the shearing motor, 12 is the turning motor, 13 is the circuit board, 14 is the wire spool slot, 15 is the wire, 16 is the trigger guard ring, 17 is the shearing switch, 18 is the turning switch, 19 is the battery slot, 20 is the quick-change lithium battery, 21 is the left countersunk screw, 22 is the right countersunk screw, 23 is the left bearing, 24 is the right bearing, and 25 is the arc-shaped baffle. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Example 1:

[0019] As attached Figure 1-3As shown, this utility model provides a semi-automatic rebar tying device, including a tying machine body 1, a handle 2, a front push trigger 3, a rear pull trigger 4, a rear button 5, and a winding reel 6. The front end of the tying machine body 1 is equipped with a lower clamping rod 8 and an upper clamping rod 9, both with guide grooves 7 on their inner sides. The tying machine body 1 contains a wire feeding device, a cutting device, a twisting device, a wire feeding motor 10, a cutting motor 11, a twisting motor 12, and a circuit board 13. The wire feeding motor 10 is connected to the wire feeding device and can feed iron wire 15 into the guide groove 7. The cutting motor 11 is connected to the cutting device and can cut the iron wire 15. The twisting motor 12 is connected to the twisting device and can twist and tie the end of the iron wire 15. The wire feeding motor 10, the cutting motor 11, and the twisting motor 12 are electrically connected to the circuit board 13. The rear of the tying machine body 1 has a reel cavity 101 with openings at the top and rear ends. Corresponding to the front of the reel cavity 101... The two rear sides of the binding machine body 1 are provided with wire reel slots 14 and are equipped with winding reels 6 capable of winding iron wire 15. The winding reels 6 are wrapped with iron wire 15 and are rotatably installed in the wire reel slots 14. The lower rear end of the binding machine body 1 is provided with a handle 2. The upper front side of the handle 2 is provided with a trigger guard 16. The front part of the trigger guard 16 is provided with a push trigger 3. The rear part of the trigger guard 16 is provided with a pull trigger 4. The upper rear side of the handle 2 is provided with a rear button 5 that can control the start and stop of the wire feeding motor 10. The front part of the push trigger 3 is provided with a shearing switch 17 that can control the start and stop of the shearing motor 11. The rear part of the pull trigger 4 is provided with a rotary switch 18 that can control the start and stop of the rotary motor 12. The rear button 5, shearing switch 17, and rotary switch 18 are electrically connected to the circuit board 13. The lower end of the handle 2 is provided with a battery slot 19 and is equipped with a quick-change lithium battery 20. This utility model features a pistol-style grip 2 for a more comfortable and convenient hold during rebar tying operations. The battery slot 19 allows for easy replacement of the quick-change lithium battery 20, and the wire reel slot 14 facilitates the replacement of the winding reel 6. The rear button 5 controls the start and stop of the wire feeding motor 10, the forward trigger 3 controls the start and stop of the shearing motor 11, and the rear trigger 4 controls the start and stop of the twisting motor 12. The wire feeding device, shearing device, and twisting device are existing publicly known technologies disclosed in Chinese Patent Document CN214272975U. The quick-change lithium battery 20 is a commonly used quick-change lithium battery for wireless high-pressure car washes. In actual operation, the wire feeding device feeds the wire 15 into the guide grooves 7 of the lower clamping rod 8 and the upper clamping rod 9. After the shearing device cuts the wire 15 to a suitable length, the twisting device twists the ends of the wire 15 together to form a binding loop, ultimately achieving rebar tying.

[0020] Example 2:

[0021] As attached Figure 1 ,3 As shown, the difference between this embodiment and Embodiment 1 is that an arc-shaped baffle 25 is provided on the upper part of the left and right ends of the winding reel 6 on the binding machine body 1. The arc-shaped baffle 25 has ear holes at both ends and is fixed to the binding machine body 1 with screws. An arc-shaped locking block 2501 is provided in the middle of the arc-shaped baffle 25. The width of the arc-shaped locking block 2501 is adapted to the reel slot 14, and the arc-shaped locking block 2501 is fitted into the reel slot 14. The arc-shaped baffle 25 prevents the winding reel 6 from detaching from the reel slot 14. The lower end of the arc-shaped locking block 2501 is an arc surface and presses against the upper end of the outer ring of the corresponding left bearing 23 and right bearing 24.

[0022] Example 3:

[0023] As attached Figure 1-2As shown, the difference between this embodiment and embodiments 1 and 2 is that the winding reel 6 includes a reel cylinder 601, a core body 602, a left shaft head 603, a left retaining plate 604, a right shaft head 605, and a right retaining plate 606. The core body 602 is fitted inside the inner cavity of the reel cylinder 601. The core body 602 is fixed to the reel cylinder 601 by radial pins 607. The left retaining plate 604 is fixed to the left side of the reel cylinder 601 by a left countersunk screw 21 and the left shaft head 603. The right retaining plate 606 is fixed to the right side of the reel cylinder 601 by a right countersunk screw 22 and the right shaft head 605. The left shaft head 603 encloses... The machine body 1 includes a winding square head 6031, a left shaft chuck 6032, a left shaft journal section 6033, and a left shaft square section 6034. These components are connected sequentially from left to right. The winding square head 6031 is located on the left side of the binding machine body 1. The outer diameter of the left shaft chuck 6032 is larger than the width of the spool groove 14. A left bearing 23 is externally fitted onto the left shaft journal section 6033. The left end of the spool cylinder 601 has a square countersunk hole 6011 that matches the left shaft square section 6034. A left stop plate 604 is also included. The center of the left shaft head 603 has a left disc square hole 6041 that matches the left shaft square section 6034. The left shaft square section 6034 is fitted into the left disc square hole 6041 and the shaft sleeve square countersunk hole 6011. The center of the left end of the left shaft head 603 has a left shaft countersunk hole 6035, and the left countersunk screw 21 is installed in the left shaft countersunk hole 6035. The right shaft head 605 includes a right shaft chuck 6051, a right shaft journal section 6052, and a right shaft square section 6053. The right shaft chuck 6051, the right shaft journal section 6052, and the right shaft square section 6053 are connected as a whole from right to left. The right shaft chuck 6051 is located in the body of the binding machine. On the right side, the outer diameter of the right shaft chuck 6051 is larger than the width of the wire spool groove 14. The right shaft journal section 6052 is externally fitted with a right bearing 24. The right end of the wire spool cylinder 601 is provided with a square countersunk hole 6011 that matches the square section 6053 of the right shaft. The center of the right stop plate 606 is provided with a square hole 6061 that matches the square section 6053 of the right shaft. The square section 6053 of the right shaft is fitted into the square hole 6061 of the right shaft and the square countersunk hole 6011 of the shaft. The center of the right end of the right shaft head 605 is provided with a right shaft countersunk hole 6054. The right countersunk screw 22 is installed in the right shaft countersunk hole 6054. The left and right guard plates 604 and 606 are located near the left and right side walls of the spool cavity 101 of the binding machine body 1. The left and right shaft chucks 6032 and 6051 protect the bearings and reduce dust ingress, and also prevent the winding spool 6 from dislodging from the spool slot 14. The left countersunk screw 21 and right countersunk screw 22 allow for easy disassembly of the winding spool 6 and replacement of related parts. The left and right bearings 23 and 24 enable the winding spool 6 to rotate smoothly within the spool slot 14, reducing frictional resistance.

[0024] Example 4:

[0025] As attached Figure 1-4 As shown, the difference between this embodiment and embodiments 1-3 is that the automatic rebar binding device further includes a winding handle 26. One end of the winding handle 26 has a handle square hole 2601 that can be adapted to the winding square head 6031 of the winding reel 6. The winding handle 26 is fitted onto the winding square head 6031 through the handle square hole 2601 and can drive the winding reel 6 to rotate. The other end of the winding handle 26 is equipped with a handle sleeve 2602 through two bearings, and the two bearings are spaced apart along the axial direction of the handle sleeve 2602. When the user holds the handle sleeve 2602 and rotates the winding handle 26, the frictional resistance is smaller and the rotation is more convenient. When the wire 15 wound on the winding reel 6 is used up, the user places the end of the winding handle 26 through its handle square hole 2601 onto the winding head 6031, then winds the end of the new wire 15 onto the winding reel 6. By shaking the winding handle 26, the user drives the winding reel 6 to rotate, causing the new wire 15 to gradually wind onto the winding reel 6 until the wire 15 is fully wound. Then, the user cuts the wire 15, removes the winding handle 26 from the winding head 6031, and then puts the end of the wire 15 on the winding reel 6 into the wire feeding device. This allows the new wire 15 to be wound onto the used winding reel 6, realizing the reuse of the winding reel 6 and effectively reducing costs.

[0026] Example 5:

[0027] As attached Figure 4 As shown, the difference between this embodiment and embodiments 1-4 is that the winding handle 26 has a chamfer 2603 at the port of the square hole 2601. The chamfer 2603 guides the winding square head 6031 when it is inserted into the square hole 2601, making it easier to install the winding handle 26.

[0028] In the description of this application, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] This utility model is described in the appendix to the specification. Figure 1 For reference purposes, directional terms such as "up," "down," "left," "right," "top," and "bottom" are used only to better and more clearly explain and understand this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] The preferred embodiments of this utility model have been described above, but should not be construed as limiting the claims. This utility model is not limited to the above embodiments, and its specific structure may vary. Any simple modifications, equivalent changes, and substitutions made to the above embodiments based on the technical essence of this utility model are still within the protection scope of this utility model.

Claims

1. A semi-automatic rebar tying device, characterized in that: The binding machine includes a main body, a handle, a front push trigger, a rear pull trigger, a rear button, and a winding reel. The front end of the main body is equipped with a lower clamping rod and an upper clamping rod, both with guide grooves on their inner sides. Inside the main body are a wire feeding device, a cutting device, a twisting device, a wire feeding motor, a cutting motor, a twisting motor, and a circuit board. The wire feeding motor is connected to the wire feeding device and can feed wire into the guide grooves. The cutting motor is connected to the cutting device and can cut the wire. The twisting motor is connected to the twisting device and can twist and bind the end of the wire. The wire feeding motor, cutting motor, and twisting motor are electrically connected to the circuit board. The rear of the main body has a reel cavity with openings at the top and rear ends. Corresponding to the front and rear sides of the reel cavity are the binding machine body... The binding machine is equipped with a wire spool slot and a winding spool for winding iron wire. The winding spool is wrapped with iron wire and rotatably mounted in the wire spool slot. A handle is provided at the lower rear end of the binding machine body. A trigger guard is provided on the upper front side of the handle. A push trigger is provided in front of the trigger guard, and a pull trigger is provided at the rear of the trigger guard. A rear button is provided on the upper rear side of the handle to control the start and stop of the wire feeding motor. A shearing switch is provided in front of the push trigger to control the start and stop of the shearing motor. A rotary switch is provided at the rear of the pull trigger to control the start and stop of the rotary motor. The rear button, shearing switch, and rotary switch are electrically connected to the circuit board. A battery slot is provided at the lower end of the handle and a quick-change lithium battery is installed.

2. The semi-automatic rebar tying device according to claim 1, characterized in that: The binding machine body is provided with arc-shaped baffles at the upper positions of the left and right ends of the winding reel. The two ends of the arc-shaped baffles are respectively provided with ear holes and are fixedly installed on the binding machine body with screws. The middle part of the arc-shaped baffles is provided with arc-shaped locking blocks. The width of the arc-shaped locking blocks is adapted to the reel slot and the arc-shaped locking blocks are installed in the reel slot.

3. A semi-automatic rebar tying device according to claim 1 or 2, characterized in that: The winding reel includes a reel cylinder, a core body, a left shaft head, a left retaining plate, a right shaft head, and a right retaining plate. The core body is fitted inside the inner cavity of the reel cylinder and is fixed to the reel cylinder by radial pins. The left retaining plate is fixed to the left side of the reel cylinder by a left countersunk screw and the left shaft head, and the right retaining plate is fixed to the right side of the reel cylinder by a right countersunk screw and the right shaft head. The left shaft head includes a winding square head, a left shaft chuck, a left shaft journal section, and a left shaft square section. The winding square head, left shaft chuck, left shaft journal section, and left shaft square section are connected sequentially from left to right. The winding square head is located on the left side of the binding machine body. The outer diameter of the left shaft chuck is larger than the width of the reel slot. A left bearing is fitted onto the outside of the left shaft journal section. The left end of the reel cylinder has a square countersunk hole that matches the left shaft square section. The center of the left retaining plate has a square countersunk hole that matches the left shaft square section. The left shaft head includes a square hole in the left disc, which is fitted into the square hole in the left disc and the square countersunk hole in the shaft cylinder. The left end of the left shaft head has a countersunk hole in the center, and a countersunk screw is installed in the countersunk hole. The right shaft head includes a right shaft chuck, a right shaft journal section, and a square section. The right shaft chuck, right shaft journal section, and right shaft square section are connected as a whole from right to left. The right shaft chuck is located on the right side of the binding machine body. The outer diameter of the right shaft chuck is larger than the width of the spool groove. A right bearing is fitted on the outside of the right shaft journal section. The right end of the spool cylinder has a square countersunk hole in the shaft cylinder that matches the square section. The center of the right disc has a square hole in the right disc that matches the square section. The square section is fitted into the square hole in the right disc and the square countersunk hole in the shaft cylinder. The right end of the right shaft head has a countersunk hole in the center, and a countersunk screw is installed in the countersunk hole.

4. The semi-automatic rebar tying device according to claim 3, characterized in that: The automatic rebar binding device also includes a wire winding handle. One end of the wire winding handle is provided with a handle square hole that can be adapted to the winding square head of the winding reel. The wire winding handle is fitted onto the winding square head through the handle square hole and can drive the winding reel to rotate. The other end of the wire winding handle is equipped with a handle sleeve through two bearings. The two bearings are spaced apart along the axial direction of the handle sleeve.

5. A semi-automatic rebar tying device according to claim 4, characterized in that: The square hole of the winding handle has a chamfered opening.

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