CN204094232U - A kind of material raising device of bar material cutter - Google Patents

Abstract

The utility model provides a material lifting device of a bar cutting machine, which belongs to the technical field of machine tools. The utility model solves the problem that the driving force of the knife seat will be offset when the existing bar cutting machine clamps the bar. The lifting device of the bar cutting machine, the bar cutting machine includes a frame, the end surface of the frame is slidably connected with a knife seat, and the lifting device includes a lifting oil cylinder fixedly connected to the knife seat, and the piston of the lifting oil cylinder The axial direction of the rod is consistent with the sliding direction of the tool seat, and the piston rod of the material lifting cylinder is fixedly connected with a material lifting slider, which is opposite to the tool seat, and a gap for clamping the bar is formed between the two. The lifting device of the bar cutting machine can clamp the bar without counteracting the driving force of the knife seat.

Description

A lifting device for a bar cutting machine

technical field

The utility model belongs to the technical field of machine tools and relates to a material lifting device of a bar cutting machine.

Background technique

Metal materials are indispensable raw materials for construction and industrial manufacturing. They are widely used and have a variety of varieties, including steel, copper and aluminum. According to the different cross-sectional shapes of metal raw materials, they are generally divided into profiles, plates, pipes, bars, etc. , where the bar specifically refers to the straight strip metal with a circular or hexagonal cross-section, and the bar with a circular cross-section can be used to process shaft parts after being truncated, and has good mechanical strength. After the bar is produced, the length is long, and it needs to be cut according to the length during processing, so professional cutting equipment is required.

Such as the Chinese invention patent application (application number: 02267693.7) discloses a chipless cutting device for bars, especially a precision bar shearing device, which is characterized in that there are fixed templates between the left and right wallboards and by The movable template driven by the main cylinder has a fixed mold and a movable mold that can move and clamp the bar on both the fixed template and the movable template. The moving direction is parallel. This shearing device is especially suitable for cutting bar with high precision. The cut material can be directly used in cold extrusion, cold forging and other processes. The cutting device cuts the bar by moving the movable template. At the same time, in order to prevent the bar from being bent, torn, etc. during the cutting process and causing the cut surface to be uneven, the cutting device is also equipped with a moving die, which is pressed against the bar under the action of the cylinder, and moves The template clamps the bar together, but the movable template needs to push the bar and the movable mold at the same time during the cutting process, that is, the clamping force of the movable mold will offset part of the driving force of the movable template.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned problems in the existing technology, and propose a material lifting device of the bar cutting machine. The material lifting device of the bar cutting machine can clamp the bar without offsetting the The driving force of the tool holder.

The purpose of the utility model can be achieved through the following technical solutions: a lifting device for a bar cutting machine, the bar cutting machine includes a frame, and the end surface of the frame is slidably connected with a knife seat, which is characterized in that, The material lifting device includes a material lifting cylinder fixedly connected to the knife seat, the axial direction of the piston rod of the material lifting cylinder is consistent with the sliding direction of the knife seat, and a material lifting slider is fixedly connected to the piston rod of the material lifting cylinder. The lifting slider is opposite to the knife seat, and a gap for clamping the bar is formed between the two.

There is a discharge hole on the cutting machine, and the bar protrudes from the discharge hole to a set length. A moving knife is fixedly connected to the knife seat. The moving knife is against the side wall of the bar, and at the same time, the lifting cylinder drives the lifting. The slider moves and makes the lifting slider against the other side wall of the bar, that is, the part of the bar that needs to be cut off is clamped by the cutter head and the lifting slider, and then the knife seat moves, that is, the cutter head Cut off the bar. During the cutting process, since the lifting cylinder is fixedly connected with the tool holder, both the lifting cylinder and the lifting slider will move together with the tool holder, and the cutter head and the lifting block will align with each other The clamping force of the material remains unchanged until the bar is cut off, the knife seat moves back, and at the same time, the lifting slider also moves back under the action of the lifting cylinder, and the lifting slider will not offset the driving force of the tool seat during the whole process .

In the lifting device of the above-mentioned bar cutter, two guide rods are fixedly connected to the knife seat, and the length direction of the two guide rods is consistent with the sliding direction of the knife seat. The free end of the rod is provided with two guide holes on the lifting slider, and the two guide rods pass through the two guide holes respectively. The material lifting cylinder is fixedly connected to the tool seat through two guide rods, and can move together with the tool seat. At the same time, there is a space for the lifting slider to move between the tool seat and the material lifting slider. On the rod, it provides guidance for the movement of the lifting slider to make it move more smoothly.

In the material lifting device of the above-mentioned bar cutter, the material lifting slider includes a material lifting seat and a material lifting block, the above-mentioned guide hole is opened on the material lifting seat, and a connecting groove is opened on the material lifting seat, The lifting blocks mentioned above are plugged into the connecting groove and fixedly connected by screws. The material lifting block is located between the two guide rods, and the material lifting block can be disassembled and connected to the material lifting seat, which is convenient for the maintenance and replacement of the material lifting block.

In the lifting device of the above-mentioned bar cutting machine, two guide blocks one are fixedly connected to the end surface of the frame respectively, the two guide blocks one are parallel, and the two opposite sides are inclined inward. The inclined surface of the knife seat is in the shape of a rectangular block, and the two opposite end faces of the knife seat are all inclined surfaces. Snug against. A dovetail groove is formed between the two guide blocks through an inclined surface, and the tool seat is slidably connected in the dovetail groove. At the same time, the direction of the driving force of the driving mechanism on the tool seat is not necessarily completely along the moving direction of the tool seat. The two slopes of the two guide blocks abut against the slopes of one of the two guide blocks, making it move more smoothly along a straight line.

In the lifting device of the above-mentioned bar cutting machine, two guide blocks 2 are fixedly connected to the end surface of the frame, and the two guide blocks 2 are parallel to each other along the length A guide groove is opened in the direction, and the material lifting seat is in the shape of a rectangular plate, and the two opposite edges of the material lifting seat are slidably connected in the two guide grooves. The second guide block provides guidance for the lifting seat to keep it stable when it moves and clamps the bar.

In the lifting device of the above-mentioned bar cutter, the frame is also provided with a knife seat driving mechanism, and the driving mechanism includes a driving cylinder, a main transmission rod, an upper transmission rod, a lower transmission rod and a support rod, The rear end of the drive cylinder is swingably connected to the end face of the frame, the main transmission rod is rotatably connected to the end face of the frame, one end of the main transmission rod is hinged to one end of the upper transmission rod, and the other end of the upper transmission rod One end is hinged with the knife seat, the other end of the main transmission rod is hinged with one end of the lower transmission rod, the other end of the lower transmission rod is hinged with the piston rod of the drive cylinder, and one end of the support rod is hinged at the machine The other end is hinged with the piston rod of the drive cylinder. The piston rod of the driving oil cylinder can be extended and extended to drive the main transmission rod to swing through the lower transmission rod. The main transmission rod is based on the principle of leverage and can drive the tool holder to move through the upper transmission rod. The distance from the hinge point of the main transmission rod and the frame to the lower end is greater than to The distance from the upper end means that the force can be increased by changing the length of the force arm. At the same time, the force can also be increased through the transmission of the lower transmission rod and the upper transmission rod, so that the driving force of the driving cylinder to the lower transmission rod can be gradually increased. The stage expands to the larger pushing force of the upper transmission rod on the tool holder. Of course, in the actual production process, the drive mechanism can also include a drive motor, an inertia wheel and a connecting rod assembly as required. The drive motor drives the inertia wheel to rotate, and the inertia wheel is connected to the tool holder through the connecting rod assembly. The rotation of the tool holder is converted into the movement of the tool holder. This kind of connecting rod assembly is more common, and the overall process of cutting the bar by the tool holder can be realized.

In the lifting device of the above-mentioned bar cutting machine, the free ends of the two guide rods are fixedly connected to a fixed seat, and a through hole is opened on the fixed seat, and the above-mentioned material lifting cylinder is fixed on the fixed seat, and the lifting cylinder The piston rod of the oil cylinder slides through the through hole, and the above-mentioned lifting seat is fixedly connected to the protruding end of the piston rod. The fixed seat is used for fixing the material lifting cylinder, so that the piston rod of the material lifting cylinder can be positioned between the two guide rods and aligned with the cutter head.

Compared with the prior art, the lifting device of the bar cutting machine has the following advantages:

1. Since the material lifting cylinder is fixedly connected with the knife seat, the material lifting cylinder, the material lifting seat and the material lifting block will all move together with the tool seat, and the clamping force of the cutter head and the material lifting block on the bar remains constant. Change until the bar is cut off, the lifting block will not offset the driving force of the knife seat during the whole process, reducing the burden on the driving mechanism.

2. When the cutter head cuts off the bar, the lifting block can always lean against the bar and clamp the bar together with the cutter head, so the bar will not be bent or torn. The truncated surface is smoother. .

3. Since the material lifting cylinder is fixed on the two guide rods, at the same time the guide rods provide guidance for the movement of the material lifting seat, making its movement more stable.

Description of drawings

Fig. 1 is a structural schematic diagram of the lifting device.

Fig. 2 is a partial structural sectional view of the lifting device.

Fig. 3 is a cross-sectional view of the partial structure of the lifting device from another perspective.

Among the figure, 1, frame; 11, discharge hole; 2, knife seat; 3, material lifting cylinder; 31, material lifting slider; 311, material lifting seat; 312, material lifting block; 33, connecting groove; 4 , drive mechanism; 41, drive oil cylinder; 42, main transmission rod; 43, upper transmission rod; 44, lower transmission rod; 45, support rod; 5, guide rod; 51, fixed seat; 6, guide block one; 7, Guide block two; 71, guide groove.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figure 1, a material lifting device of a bar cutting machine, the bar cutting machine includes a frame 1, and a discharge hole 11 is opened on one end of the frame 1, and the rod protrudes from the discharge hole 11 The length is set, and the material lifting device includes a knife holder 2 slidingly connected to the end surface of the frame 1 on the side of the discharge hole 11, a knife head is fixedly connected to the knife holder 2, and a material lifting cylinder 3 is also fixedly connected to the knife holder 2. The axial direction of the piston rod of the material lifting cylinder 3 is consistent with the sliding direction of the knife seat 2. The piston rod of the material lifting cylinder 3 is fixedly connected with a material lifting slider 31. The material lifting slider 31 includes a material lifting seat 311 and a lifting material. Material block 312, the material lifting block 312 is fixedly connected on the material lifting seat 311, the material lifting block 312 is positioned at the other side of the discharge hole 11, and the material lifting block 312 is opposite to the cutter head. The drive mechanism 4 for the movement of the tool holder 2. When the bar protrudes from the discharge hole 11, the cutter head abuts against one side wall of the bar, and at the same time, the lifting cylinder 3 drives the lifting seat 311 to move, and makes the lifting block 312 lean against the other side of the bar On the side wall, that is, the part of the bar that needs to be cut off is clamped by the cutter head and the lifting block 312, and then the driving mechanism 4 drives the knife seat 2 to move, that is, the cutter head cuts off the bar. The material oil cylinder 3 is fixedly connected with the knife seat 2, so the material lifting cylinder 3, the material lifting seat 311 and the material lifting block 312 will all move together with the knife seat 2, and the tool seat 2 and the material lifting block 312 are opposite to the bar material. The clamping force remains unchanged until the bar is cut off, the knife seat 2 moves back, and at the same time, the lifting seat 311 also moves back under the action of the lifting cylinder 3, and the lifting block 312 will not offset the movement of the knife seat 2 during the whole process. Driving force, reduce the burden of driving mechanism 4.

Specifically, as shown in Fig. 2 and Fig. 3, two guide rods 5 are fixedly connected to the knife seat 2, the length direction of the two guide rods 5 is consistent with the sliding direction of the knife seat 2, and the lifting cylinder 3 is fixedly connected to the two The free end portion of the guide rod 5 is provided with two guide holes on the material lifting seat 311, and the two guide rods 5 pass through the two guide holes respectively. It is fixed on the knife seat 2 and can move together with the knife seat 2. At the same time, there is a space for the lifting seat 311 to move between the knife seat 2, and the lifting seat 311 is slidably sleeved on the guide rod 5 through the guide hole. Guidance is provided for the movement of the lifting seat 311 to make its movement more stable. Two guiding blocks 6 are fixedly connected to the end surface of the frame 1 respectively. The two guiding blocks 16 are parallel, and the two opposite sides are inclined inwardly. The two opposite end surfaces are all slopes, the knife seat 2 is slidingly connected between the two guide blocks-6, and the two slopes of the knife seat 2 are fitted against the slopes of the two guide blocks-6, and the passage between the two guide blocks-6 The slope forms a dovetail groove, and the tool holder 2 is slidably connected in the dovetail groove. At the same time, since the direction of the driving force of the driving mechanism 4 on the tool holder 2 is not necessarily completely along the moving direction of the tool holder 2, the two sides of the tool holder 2 The inclined surfaces fit against the inclined surfaces of the two guide blocks-6 to make it move more smoothly along a straight line. The end face of the frame 1 is also fixedly connected with two guide blocks 27, the two guide blocks 7 are parallel, and guide grooves 71 are provided along the length direction on the two opposite sides, and the lifting seat 311 is in the shape of a rectangular plate. The two opposite edges of the material lifting seat 311 are slidably connected in the two guide grooves 71, and the two guide blocks 7 provide guidance for the material lifting seat 311 to keep it stable when moving and clamping the bar. A connecting groove 33 is provided on the material lifting seat 311, and the material lifting block 312 is plugged in the connecting groove 33 and fixedly connected by screws. overhaul and replacement. The free ends of the two guide rods 5 are fixedly connected with a fixed seat 51, and a through hole is provided on the fixed seat 51. The material lifting cylinder 3 is fixed on the fixed seat 51, and the piston rod of the material lifting cylinder 3 slides through the through hole, and the lifting cylinder 3 is fixed on the fixed seat 51. The material seat 311 is fixedly connected to the extended end of the piston rod, and the fixed seat 51 is used for fixing the material lifting cylinder 3, so that the piston rod of the material lifting cylinder 3 can be positioned between the two guide rods 5 and aligned with the cutter head.

Drive mechanism 4 comprises drive oil cylinder 41, main transmission rod 42, upper transmission rod 43, lower transmission rod 44 and support rod 45, and the rear end swing of drive oil cylinder 41 is connected on the end face of frame 1, and main transmission rod 42 is connected in rotation On the end face of the frame 1, one end of the main transmission rod 42 is hinged with one end of the upper transmission rod 43, the other end of the upper transmission rod 43 is hinged with the tool holder 2, and the other end of the main transmission rod 42 is connected with one end of the lower transmission rod 44. The other end of the lower transmission rod 44 is hinged to the piston rod of the drive cylinder 41, one end of the support rod 45 is hinged to the end face of the frame 1, the other end is hinged to the piston rod of the drive cylinder 41, and the piston of the drive cylinder 41 The extension and contraction of the rod can drive the main transmission rod 42 to swing through the lower transmission rod 44. The main transmission rod 42 is a lever principle and can drive the tool holder 2 to move through the upper transmission rod 43, wherein the hinge point between the main transmission rod 42 and the frame 1 reaches the lower end. The distance is greater than the distance to the upper end, that is, by changing the length of the arm of force to increase the force effect, at the same time, the transmission through the lower transmission rod 44 and the upper transmission rod 43 can also play a force increase effect, thereby driving the cylinder 41 to the bottom. The driving force of the transmission rod 44 is enlarged step by step to the larger pushing force of the upper transmission rod 43 on the tool holder 2 . Certainly in actual production process, driving mechanism 4 also can comprise driving motor, inertial wheel and connecting rod assembly as required, and driving motor drives inertial wheel to rotate, and inertial wheel is connected with tool holder 2 by connecting rod assembly, and connecting rod assembly can The rotation of the inertia wheel is converted into the movement of the tool holder 2. This kind of connecting rod assembly is relatively common, and can realize the process of cutting the bar by the tool holder 2 as a whole.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although terms such as frame 1 , discharge hole 11 , and knife seat 2 are frequently used herein, the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is against the spirit of the utility model.

Claims (7)

1. A material lifting device of a bar cutting machine, the bar cutting machine comprises a frame (1), and the end surface of the frame (1) is slidably connected with a knife seat (2), it is characterized in that the The material lifting device includes a material lifting cylinder (3) fixedly connected to the knife seat (2), the piston rod axial direction of the material lifting cylinder (3) is consistent with the sliding direction of the knife seat (2), and the material lifting cylinder (3) ) is fixedly connected with a lifting slider (31) on the piston rod, and the lifting slider (31) is opposite to the knife seat (2), and a gap for clamping a bar is formed between the two. 2. The lifting device of the bar cutter according to claim 1, characterized in that, two guide rods (5) are fixedly connected to the knife seat (2), and the length of the two guide rods (5) The direction is consistent with the sliding direction of the knife seat (2), and the above-mentioned material lifting cylinder (3) is fixedly connected to the free ends of the two guide rods (5), and the material lifting slider (31) is provided with two guide holes, The two guide rods (5) pass through the two guide holes respectively. 3. The lifting device of the bar cutting machine according to claim 2, characterized in that, the lifting slider (31) comprises a lifting seat (311) and a lifting block (312), and the above-mentioned guide hole Set on the material lifting seat (311), the material lifting seat (311) is provided with a connection groove (33), and the above material lifting block (312) is plugged in the connection groove (33) and fixedly connected by screws. 4. The material lifting device of the bar cutting machine according to claim 3, characterized in that two guide blocks one (6) are fixedly connected to the end surface of the frame (1) respectively, and the two guide blocks one (6) Guide block one (6) is parallel, and two opposite sides are inwardly inclined inclined planes, and described knife seat (2) is rectangular block shape, and two opposite end faces of knife seat (2) are inclined planes, and described knife seat (2) Slidingly connected between the two guide blocks one (6), and the two slopes of the tool holder (2) fit against the slopes of the two guide blocks one (6). 5. The lifting device of the bar cutting machine according to claim 3, characterized in that, two guide blocks (7) are fixedly connected to the end surface of the frame (1), and the two The two guide blocks (7) are parallel, and guide grooves (71) are provided along the length direction on two opposite sides. The material lifting seat (311) is in the shape of a rectangular plate. The edges are slidingly connected in the two guide grooves (71). 6. The lifting device of the bar cutting machine according to claim 4 or 5, characterized in that, the frame (1) is also provided with a knife seat driving mechanism (4), and the driving mechanism (4 ) includes a drive cylinder (41), a main transmission rod (42), an upper transmission rod (43), a lower transmission rod (44) and a support rod (45), and the rear end of the drive cylinder (41) is swingably connected to the frame On the end face of (1), the main transmission rod (42) is rotatably connected to the end face of the frame (1), and one end of the main transmission rod (42) is hinged with one end of the upper transmission rod (43), and the upper transmission The other end of the rod (43) is hinged with the tool holder (2), the other end of the main transmission rod (42) is hinged with one end of the lower transmission rod (44), and the other end of the lower transmission rod (44) It is hinged with the piston rod of the drive cylinder (41), one end of the support rod (45) is hinged on the end face of the frame (1), and the other end is hinged with the piston rod of the drive cylinder (41). 7. The lifting device of the bar cutting machine according to claim 4 or 5, characterized in that, the free ends of the two guide rods (5) are fixedly connected with a fixed seat (51), and the fixed seat (51) ) is provided with a through hole, the above-mentioned material lifting cylinder (3) is fixed on the fixed seat (51), and the piston rod of the material lifting cylinder (3) slides through the through hole, and the above-mentioned material lifting seat (311) is fixedly connected to the piston The protruding end of the rod.