Rebar quick cutting apparatus

Abstract

The utility model discloses a kind of steel bar fast cutting equipment, including pedestal, rotating arm connected with pedestal is driven by pneumatic cylinder, rotating arm is provided with cutter, cutter below pedestal is provided with tool rest, tool rest is provided with the steel bar accommodating groove perpendicular to pedestal of middle axis line, the middle part of steel bar accommodating groove is provided with the accommodating cutter groove compatible with cutter, the bottom surface of accommodating cutter groove is lower than the setting of steel bar accommodating groove;Pedestal is further provided with steel bar length measuring mechanism, including moving seat, baffle is slidably arranged on it along the longitudinal extension direction of steel bar accommodating groove, baffle is set corresponding to steel bar accommodating groove, and locking member is arranged between baffle and moving seat.The utility model is low in cost, safe and fast, easy to operate, can stably support steel bar to be cut, and accurately control steel bar cutting length, rotating arm is driven to open and close by pneumatic cylinder, reach the purpose that cutter and tool rest cooperate to cut steel bar neatly, so that the steel bar cutting section of consistent length, cutting quality is up to standard is obtained.

Description

Technical Field

[0001] This utility model relates to the field of automobile crane manufacturing technology, and in particular to a quick-cutting device for steel bars. Background Technology

[0002] In the automotive manufacturing process, electrophoretic plating production lines for small structural components extensively rely on various irregularly shaped hooks for suspension operations. To ensure secure suspension of the workpieces, these hooks need to match the on-site suspension points, process equipment interfaces, and the contours of the suspended parts, requiring high shape accuracy. Secondly, because the hooks are constantly subjected to dragging stress and chemical corrosion, they are prone to deformation and damage, necessitating timely replacement, thus resulting in significant demand. However, existing hooks are currently handmade by workshop personnel, involving cutting steel bars into sections and then bending them. This process is time-consuming, labor-intensive, inefficient, and poses certain safety risks. Furthermore, the handheld cutting equipment used for cutting steel bars relies on manual force, making it difficult to maintain a constant cutting speed, resulting in uneven cuts that can easily scratch the workpieces during suspension operations. More importantly, the length of the steel bars obtained through handheld cutting equipment is difficult to control, leading to variations in hook length exceeding standard requirements even for the same model. Summary of the Invention

[0003] To improve production efficiency and ensure personnel safety and product quality, this utility model provides a low-cost, easy-to-operate, and high-precision fixed-length rebar cutting device. Specifically, the following technical solution can be adopted: The rebar quick-cutting device of this utility model includes a base, a trunnion support on the base, a rotating arm driven by a cylinder on the trunnion support, a cutter on the rotating arm, a cutter holder on the base below the cutter, a rebar receiving groove with its central axis perpendicular to the base on the cutter holder, a cutter receiving groove adapted to the cutter in the middle of the rebar receiving groove, and the bottom surface of the cutter receiving groove being lower than the rebar receiving groove; the base also includes a rebar length measuring mechanism, which includes a movable base, a baffle that slides along the longitudinal extension direction of the rebar receiving groove on the movable base, the baffle being corresponding to the rebar receiving groove, and a locking element being provided between the baffle and the movable base.

[0004] In this invention, a cylinder drives a rotating arm to open and close, achieving the purpose of neatly cutting the reinforcing bar through the cooperation of the cutter and the cutter holder. The cutter holder is equipped with a reinforcing bar receiving groove adapted to the outer diameter of the reinforcing bar, providing stable support. A baffle is positioned corresponding to the reinforcing bar receiving groove, and its position is adjusted according to the cutting length of the reinforcing bar, thereby achieving precise control of the cutting length. During the cutting process, simply feed the reinforcing bar into the reinforcing bar receiving groove of the cutter holder, ensuring the head of the reinforcing bar contacts the baffle, and then activate the cylinder to complete the precise cutting of the reinforcing bar. This invention is low-cost, safe, fast, and easy to operate, effectively guaranteeing both cutting quality and cutting accuracy.

[0005] Preferably, the cylinder includes a first cylinder and a second cylinder disposed at both ends of the base. The first cylinder is disposed near the trunnion support, and the second cylinder is disposed near the blade holder. The piston rod ends of both the first and second cylinders are connected to the rotating arm via floating joints. This invention employs a double-cylinder lever structure, which can improve the opening and closing speed of the rotating arm, reduce the load on the rotating arm, solve the lever eccentricity problem, and make the cutting system lighter, faster, and more reliable. The floating joint can effectively absorb the lateral displacement caused by the lever swing and prevent the piston rod from being bent.

[0006] Preferably, the cutter and the rotating arm, the cutter holder and the base are all connected by a quick-connect mechanism; the quick-connect mechanism includes a fixed sleeve and a plug-in assembly. The fixed sleeve has a pair of radial positioning holes. The plug-in assembly includes a plug-in connector that matches the inner diameter of the fixed sleeve. The plug-in connector has a T-shaped vertical hole and two horizontal holes. The vertical hole extends upward from the bottom of the plug-in connector, and the horizontal holes extend from the top of the vertical hole to the outer wall of the plug-in connector. An adjusting screw, a first compression spring and a trigger rod are arranged sequentially from bottom to top in the vertical hole. The adjusting screw is located at the bottom of the vertical hole and is screwed to it. The top of the trigger rod has a conical structure. Each horizontal hole has a second compression spring located on the inner side and a pin located on the outer side opposite to the radial positioning hole. An anti-disengagement step is provided between the pin and the horizontal hole. The fixed sleeve is mounted on the rotating arm or the base, and the top of the plug-in connector has a cutter, or a rebar receiving groove and a cutter receiving groove. The aforementioned quick-connect mechanism allows the device to quickly replace the cutter and cutter holder according to changes in the specifications of the reinforcing bars, thus enabling the invention to be used for multiple purposes and achieving the goal of saving production costs.

[0007] Preferably, the movable seat has an elongated hole, and the bottom of the baffle has a rod with external threads. The rod passes through the elongated hole and the baffle is fixed in position by a locking nut screwed to the bottom. The sliding connection mechanism used in this invention is easy to manufacture, low in cost, and has good performance, allowing for quick adjustment of the baffle position as needed.

[0008] Preferably, the movable base is equipped with a scale, which is arranged parallel to the rebar receiving groove. The scale used in this invention can intuitively and quantitatively express the position of the baffle, enabling operators to quickly adjust the baffle into place according to the required rebar length.

[0009] The rebar quick-cutting equipment provided by this utility model is low in cost, safe, fast, and easy to operate. It can stably support the rebar to be cut and accurately control the cutting length. The cylinder drives the rotating arm to open and close, so that the cutter and the cutter holder cooperate to cut the rebar neatly, thereby obtaining rebar segments with consistent length and meeting the cutting quality standards. This provides the basic conditions for subsequent hook bending operations, effectively improves the hook quality, and ensures the smooth progress of electrophoretic plating of small structural parts. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 yes Figure 1 Front view of the central knife holder.

[0012] Figure 3 yes Figure 2 AA cross-section view.

[0013] Figure 4 yes Figure 1 Front view of the center cutter.

[0014] Figure 5 yes Figure 4 BB cross-section. Detailed Implementation

[0015] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific working processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0016] like Figure 1-5As shown, the rebar quick-cutting device of this utility model includes a base 1, a trunnion support 2 on the base 1, and a rotating arm 3 driven by a cylinder on the trunnion support 2. The rotating arm 3 can be driven by a single cylinder or by two cylinders. In this embodiment, a two-cylinder drive scheme is adopted. Specifically, a first cylinder 41 and a second cylinder 42 are arranged at both ends of the base 1. The first cylinder 41 is located closer to the trunnion support 2, and the second cylinder 42 is located away from the trunnion support 2. The piston rod ends of the first cylinder 41 and the second cylinder 42 are connected to the rotating arm 3 through floating joints. A copper sleeve is provided at the connection between the trunnion support 2 and the rotating arm 3. The floating joint is used to absorb the lateral displacement caused by the lever swing and prevent the piston rod from being bent. The copper sleeve has a similar function to the floating joint. The above-mentioned double-cylinder lever structure can improve the opening and closing speed of the rotating arm 3, reduce the load on the rotating arm 3, solve the lever off-center load problem, and make the cutting system lighter, faster, and more reliable.

[0017] A cutter 5 is mounted on the rotating arm 3, located between the trunnion support 2 and the second cylinder 42. A corresponding cutter holder 6 is mounted on the base 1 below the cutter 5. The cutter holder 6 has a rebar receiving groove 61 with its central axis perpendicular to the base 1. A cutter receiving groove 62, adapted to the cutter 5, is located in the middle of the rebar receiving groove 61, with its bottom surface lower than the rebar receiving groove 61. The rebar receiving groove 61 is used to hold the rebar to be cut without obstructing the cutter 5 from cutting the rebar. Because the rebar receiving groove 61 provides stable support for the rebar, no manual support is required, improving operational safety.

[0018] This invention can be equipped with a quick-connect mechanism between the cutter 5 and the rotating arm 3, and between the cutter holder 6 and the base 1, so that when the cutter 5 and the cutter holder are worn or the specifications of the steel bars are changed, the cutter 5 and / or the cutter holder 6 can be quickly replaced, thus achieving the purpose of multi-purpose use and cost saving.

[0019] like Figure 2-5 As shown, the quick-connect mechanism used in this embodiment includes a fixed sleeve 71 and a plug-in assembly. The fixed sleeve 71 has a pair of radial positioning holes 72. The plug-in assembly includes a plug connector 73 that matches the inner diameter of the fixed sleeve 71. The plug connector 73 has a T-shaped vertical hole and two horizontal holes. The vertical hole extends upward from the bottom of the plug connector 73, and the horizontal holes extend from the top of the vertical hole to the outer wall of the plug connector 73. An adjusting screw 74, a first compression spring 75, and a trigger rod 76 are arranged sequentially from bottom to top in the vertical hole. The adjusting screw 74 is located at the bottom of the vertical hole and is screwed to it. The top of the trigger rod 76 has a conical structure. Each horizontal hole has a second compression spring 77 located on the inner side and a pin 78 located on the outer side opposite to the radial positioning hole 72. An anti-disengagement step 79 is provided between the pin 78 and the horizontal hole.

[0020] For the quick-connect mechanism of the cutter 5, its fixed sleeve 71 is mounted on the rotating arm 3, and the plug 73 is equivalent to the cutter 5, with a blade for cutting steel bars at its head. For the quick-connect mechanism of the knife holder 6, its fixed sleeve 71 is mounted on the base 1, and the plug 73 is equivalent to the knife holder 6, with a steel bar receiving groove 61 and a blade receiving groove 62 at its head.

[0021] Whether using the quick-connect mechanism for cutter 5 or cutter holder 6, the installation of connector 73 is performed as follows: First, press the pin 78. At this time, the second compression spring 77 is compressed and pushes the trigger rod 76 inward. Since the contact surface between the trigger rod 76 and the second compression spring 77 is a conical structure, the trigger rod 76 moves downward along the vertical hole, compressing the first compression spring 75. When the pin 78 enters the sleeve 71 with connector 73 and moves downward through the radial positioning hole 72, due to the decrease in external pressure, the pin 78, under the pushing action of the first compression spring 75, trigger rod 76, and second compression spring 77, pops outward into the radial positioning hole 72, completing the positioning of connector 73. At this point, connector 73 is installed. To remove connector 73, press the pin 78 and pull connector 73 outward.

[0022] To accurately control the length of the cut rebar segments, a rebar length measuring mechanism is welded onto the base 1. This mechanism includes a movable base 81, on which a baffle 82 is mounted, sliding along the longitudinal extension direction of the rebar receiving groove 61. The baffle 82 corresponds to the rebar receiving groove 61, and a locking element 83 is provided between the baffle 82 and the movable base 81. Specifically, an elongated hole is provided on the movable base 81, and an insert rod with an external thread at the end is provided at the bottom of the baffle 82. The insert rod passes through the elongated hole and can move freely along the hole. When it reaches a suitable position, the baffle 82 is fixed in position by a locking nut (i.e., locking element 83) screwed onto the bottom of the insert rod. Furthermore, a scale 84 is provided on the movable base 81, which is parallel to the rebar receiving groove 61. This scale 84 is used to visually and quantitatively indicate the position of the baffle 82, allowing the operator to quickly adjust the baffle 82 into position according to the required rebar length. The aforementioned movable baffle 82 is provided in relation to the rebar receiving groove 61, and its position is adjusted according to the rebar cutting length, thereby achieving precise control over the rebar cutting length.

[0023] When cutting steel bars, this utility model only requires opening the rotating arm 3, feeding the steel bar into the steel bar receiving groove 61 of the blade holder 6, and making the head of the steel bar contact the baffle 82. Then, the rotating arm 3 is lowered, driving the cutter 5 to move towards the blade receiving groove 62 of the blade holder 6, thus completing the precise cutting of the steel bar.

[0024] This invention is low in cost, safe and quick, easy to operate, and can effectively guarantee cutting quality and cutting precision.

[0025] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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.

Claims

1. A rebar quick-cutting device, characterized in that: The device includes a base, on which a trunnion support is mounted, and on which a rotating arm driven by a cylinder is mounted, a cutter is mounted, and on the base below the cutter is a cutter holder, on which a rebar receiving groove with its central axis perpendicular to the base is provided, and a cutter receiving groove adapted to the cutter is provided in the middle of the rebar receiving groove, the bottom surface of the cutter receiving groove being lower than the rebar receiving groove; the base also includes a rebar length measuring mechanism, which includes a movable base, on which a baffle is mounted that slides along the longitudinal extension direction of the rebar receiving groove, the baffle being positioned corresponding to the rebar receiving groove, and a locking element being provided between the baffle and the movable base.

2. The rebar quick-cutting equipment according to claim 1, characterized in that: The cylinder includes a first cylinder and a second cylinder disposed at both ends of the base. The first cylinder is disposed near the trunnion support, and the second cylinder is disposed near the tool holder. The piston rod ends of both the first cylinder and the second cylinder are connected to the rotating arm through floating joints.

3. The rebar quick-cutting equipment according to claim 1, characterized in that: The cutter and rotating arm, as well as the cutter holder and base, are all connected by a quick-connect mechanism. The quick-connect mechanism includes a fixed sleeve and a plug-in assembly. The fixed sleeve has a pair of radial positioning holes. The plug-in assembly includes a plug-in connector that matches the inner diameter of the fixed sleeve. The plug-in connector has a T-shaped vertical hole and two horizontal holes. The vertical hole extends upward from the bottom of the plug-in connector, and the horizontal holes extend outward from the top of the vertical hole to the outer wall of the plug-in connector. An adjusting screw, a first compression spring, and a trigger rod are sequentially arranged from bottom to top in the vertical hole. The adjusting screw is located at the bottom of the vertical hole and is screwed to it. The top of the trigger rod has a conical structure. Each horizontal hole contains a second compression spring located on the inner side and a pin located on the outer side opposite to the radial positioning hole. An anti-disengagement step is provided between the pin and the horizontal hole. The fixed sleeve is mounted on the rotating arm or base, and the top of the plug-in connector has a cutter, a rebar receiving groove, and a cutter receiving groove.

4. The rebar quick-cutting equipment according to claim 1, characterized in that: The movable seat has an elongated hole, and the bottom of the baffle has an insertion rod with an external thread. The insertion rod passes through the elongated hole and the baffle is fixed in position by a locking nut screwed to the bottom.

5. The rebar quick-cutting equipment according to claim 1, characterized in that: The movable base is equipped with a scale, which is arranged parallel to the rebar receiving groove.

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