Telescopic avoiding medium-pressure cutter for bending center
By designing a telescopic avoidance pressure tool at the bending center and utilizing a linkage structure and cylinder drive, the problem of easy misjudgment by traditional sensors is solved, achieving more efficient and stable workpiece processing, and reducing equipment maintenance costs and workpiece scrap rate.
Patent Information
- Application Number
- CN202521887838.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-03
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-09-03
AI Technical Summary
In existing bending centers, traditional position sensors are easily contaminated or interfered with during the workpiece bending process, leading to misjudgments, tool damage, production discontinuity, increased maintenance costs, and workpiece scrap rate.
Design a telescopic avoidance intermediate pressure knife for bending center. Through linkage structure and cylinder drive, the intermediate knife can be raised, lowered and moved horizontally, reducing the reliance on traditional position sensors and improving structural reliability.
This reduces the risk of structural damage caused by sensor misjudgments, improves production continuity and equipment stability, and reduces maintenance frequency and workpiece scrap rate.
Smart Images
Figure CN223629345U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of bending center, concretely relates to a telescopic avoiding middle pressure cutter for bending center. BACKGROUND
[0002] In the field of modern sheet metal processing, the bending center as a high-precision sheet forming equipment, the stability and reliability of its tool system directly determine the product processing quality and production efficiency.
[0003] At present, in the field of modern bending center processing, during the workpiece bending process, when the bending center needs to realize the hinge cutter function, the two side cutters need to be controlled to shrink inward, and the middle cutter needs to be lifted upward at the same time, so as to meet the requirements of workpiece bending angle and forming precision. At present, the traditional structure of the industry to realize the above action adopts the stretching expansion structure, and drives the cutter to complete the shrinking and lifting action through the stretching expansion structure. Moreover, in order to ensure the action to place precision, such structure needs to be equipped with multiple position sensors to detect the extension amount and lifting height of the cutter in real time.
[0004] However, in the actual production environment, the bending process is often accompanied by metal debris flying, oil stain adhering and vibration impact, which can easily cause the sensor to be contaminated or interfered. Such interference can easily cause the sensor to misjudge the position of the cutter, and when the sensor misjudges that the cutter has reached the specified position but is actually not in place, the driving system will continue to execute the action, thereby causing the cutter to collide with the workpiece or other parts of the equipment, and even causing structural damage such as cutter cracking and driving mechanism deformation. In this way, it not only affects the production continuity, but also greatly increases the equipment maintenance cost and workpiece scrap rate. UTILITY MODEL CONTENTS
[0005] The utility model solves the technical problem to provide a telescopic avoiding middle pressure cutter for bending center, and make it through the optimization middle pressure cutter driving and avoiding structure design, eliminate the excessive dependence on traditional position sensor, fundamentally avoid the risk of structural damage caused by sensor misjudgment.
[0006] In order to solve the above technical problems, the utility model provides a technical scheme, which is a telescopic avoidance medium-pressure cutter for a bending center, comprising a medium-pressure cutter body, a pressure rod vertically slidingly installed in the medium-pressure cutter body, a driving block installed at the lower end of the pressure rod, a front push shaft hinged to the front side of the driving block, a rotating shaft fixedly installed at the end of the front push shaft away from the driving block, an intermediate block hinged to the rotating shaft, the intermediate block horizontally slidingly installed on the medium-pressure cutter body, a rear clamping block provided at the rear of the driving block and fixedly installed on the medium-pressure cutter body, sliding through holes provided at the left and right ends of the driving block, spring guide columns vertically slidingly installed in the sliding through holes, upper springs sleeved on the upper parts of the spring guide columns after the spring guide columns extend out of the sliding through holes, lower springs sleeved on the lower parts of the spring guide columns after the spring guide columns extend out of the sliding through holes and fixedly connected with an intermediate cutter, the intermediate cutter vertically slidingly installed on the medium-pressure cutter body, a rear abutting portion provided at the upper rear end of the intermediate cutter, the rear abutting portion located above the upper end surface of the rear clamping block and capable of abutting against the upper end surface of the rear clamping block, a front abutting portion provided at the upper front end of the intermediate cutter, the front abutting portion capable of being located below the lower part of the intermediate block and horizontally abutting against the lower part of the intermediate block.
[0007] Further, a sliding long hole is formed in the side wall of the medium-pressure cutter body, a pressure pin is vertically slidingly installed in the sliding long hole, one end of the pressure pin extends out of the sliding long hole and is fixedly connected with the pressure rod, the other end of the pressure pin extends out of the sliding long hole and is located outside the medium-pressure cutter body, and the part can be connected with the piston rod of a cylinder used for driving the intermediate cutter to move up and down through a component such as a hole-connected plate, so that power is transmitted to the pressure rod.
[0008] Further, a limiting groove three is formed in the front side of the medium-pressure cutter body, the sliding long hole is located in the limiting groove three, and the hole-connected plate is vertically slidingly installed in the limiting groove three and can be constrained by the limiting groove three to slide.
[0009] Further, the lower end surface of the intermediate block can abut against the upper end surface of the front abutting portion, the front end of the lower end surface of the intermediate block is provided with a stepped surface, the stepped surface is located at the rear and can abut against the front end surface of the front abutting portion, so that the intermediate cutter is constrained in the horizontal direction.
[0010] Further, the left and right side walls of the inner cavity of the medium-pressure cutter body are provided with limiting protrusions one, the left and right sides of the intermediate cutter are provided with limiting grooves one, and the limiting grooves one are vertically slidingly connected with the corresponding limiting protrusions one to guide the sliding direction of the intermediate cutter.
[0011] Further, the left side wall and the right side wall of the inner cavity of the middle pressure cutter body are respectively provided with a limiting groove II, and the left side and the right side of the middle block are respectively provided with a limiting protrusion II, the limiting groove II and the corresponding limiting protrusion II are horizontally slidably connected, so as to guide the sliding direction of the middle block.
[0012] Further, the rear side of the middle block is provided with an avoiding groove, and the middle block is avoided from interfering with the middle cutter through the avoiding groove.
[0013] Further, the two ends of the rear clamping block are respectively provided with a mounting hole, the rear clamping block is fixedly installed on the middle pressure cutter body through a fastener penetrating through the mounting hole, and the fastener is preferably a screw.
[0014] Further, the rear side of the middle cutter is provided with an avoiding groove, and the middle block is avoided from interfering with the middle cutter through the avoiding groove.
[0015] Further, the rear side of the upper part of the middle cutter can be in contact with the front side of the rear clamping block, and has a certain limiting effect.
[0016] From the above technical solutions, the utility model has the following advantages: first, the utility model can realize the lifting movement of the middle cutter through the cooperation of the connecting rod structure and the air cylinder, that is, the telescopic movement of the middle cutter, and in the whole telescopic movement process, it has the characteristics of high reset sensitivity under the cooperation of the spring and the front pushing shaft, and the jamming phenomenon is obviously reduced; the precision of the structure is ensured under the cooperation of the middle block and the rear clamping block; second, the utility model does not need to set a sensor for detection, which reduces the possibility of error to a certain extent, thereby improving the structural operation reliability, reducing the equipment maintenance frequency and the workpiece rejection rate, reducing the production and operation cost, enhancing the continuous production capacity of the bending center, and providing a more efficient and stable technical solution for the modern bending processing field. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the utility model, the following will briefly introduce the drawings needed to be used in the description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.
[0018] Fig. 1 It is an explosion structural schematic view of the utility model;
[0019] Fig. 2 It is a sectional view of the utility model;
[0020] Fig. 3 It is an application schematic view of the utility model at the bending center.
[0021] In the diagram: 1. Medium pressure cutter body; 2. Intermediate cutter; 3. Intermediate block; 4. Front push shaft; 5. Drive block; 6. Pressure rod; 7. Spring guide post; 8. Locking screw; 9. Rear locking block; 10. Fastener; 11. Limiting groove two; 12. Pressure pin; 13. Hinge shaft; 14. Rotating shaft; 15. Limiting protrusion one; 16. Limiting groove one; 17. Mounting groove; 18. Limiting protrusion two; 19. Limiting groove three; 20. Sliding elongated hole; 21. Clearance groove; 22. Rear abutment part; 23. Stepped surface; 24. Front abutment part. Detailed Implementation
[0022] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.
[0023] like Figs. 1 to 3 As shown, this utility model provides a telescopic avoidance intermediate pressure cutter for bending centers, comprising an intermediate pressure cutter body 1. A pressure rod 6 is vertically slidably mounted in the inner cavity of the intermediate pressure cutter body 1. A horizontal pressure pin 12 is fixedly mounted on the upper part of the pressure rod 6. The pressure pin 12 extends to the outside of the intermediate pressure cutter body 1 through a sliding elongated hole 20 penetrating the side wall of the intermediate pressure cutter body 1 and can be inserted into the lower end of a perforated connecting plate. Thus, the pressure pin 12 and the pressure rod 6 are driven to move up and down by the perforated connecting plate connected to the piston rod of the cylinder used to drive the intermediate cutter 2 to move up and down. Moreover, as a preferred embodiment, this utility model can provide a limiting groove 3 19 on the front side of the intermediate pressure cutter body 1, and place the sliding elongated hole 20 in the limiting groove 3 19. The perforated connecting plate is vertically slidably mounted in the limiting groove 3 19, thereby constraining the sliding direction of the perforated connecting plate through the limiting groove 3 19.
[0024] The lower end of the pressing rod 6 is provided with a driving block 5, the front side of the driving block 5 is hingedly provided with a front pushing shaft 4 through a hinge shaft 13, the front pushing shaft 4 can be vertically rotated around the hinge shaft 13, and two rotating shafts 14 are fixedly installed on the front pushing shaft 4 and away from the driving block 5, and the two rotating shafts 14 are commonly hingedly provided with an intermediate block 3. The left and right sides of the intermediate block 3 are provided with limiting protrusions two 18, meanwhile, the left and right side walls of the inner cavity of the middle pressing cutter body 1 are provided with limiting recesses two 11, and the limiting recesses two 11 are horizontally slidably connected with the corresponding limiting protrusions two 18, so that the intermediate block 3 is horizontally slidably installed on the middle pressing cutter body 1. Furthermore, the utility model also provides an avoiding groove 21 in the lower part of the rear side of the intermediate block 3, and the avoiding groove 21 avoids the interference between the intermediate block 3 and the following intermediate cutter 2. The front end of the lower end surface of the intermediate block 3 is provided with a stepped surface 23, the stepped surface 23 is arranged towards the rear, and when the following intermediate cutter 2 is in the extended state, the stepped surface 23 of the intermediate block 3 abuts against the front end surface of the front abutting portion 24 of the following intermediate cutter 2, so as to horizontally constrain the intermediate cutter 2; and preferably, the lower end surface of the intermediate block 3 abuts against the upper end surface of the front abutting portion 24 of the following intermediate cutter 2 when the following intermediate cutter 2 is in the extended state, so as to vertically constrain the intermediate cutter 2.
[0025] The rear of the driving block 5 is provided with a rear clamping block 9, both ends of the rear clamping block 9 are provided with mounting holes, the rear clamping block 9 is fixedly installed on the middle pressing cutter body 1 through fasteners 10 penetrating through the mounting holes, and the fasteners 10 preferably adopt screws. Furthermore, preferably, the utility model can be provided with a mounting recess 17 on the rear side of the middle pressing cutter body 1, and the rear clamping block 9 is installed in the mounting recess 17, so as to ensure the overall flatness.
[0026] The left and right ends of the driving block 5 are provided with sliding through holes, spring guide columns 7 are vertically slidably installed in the sliding through holes, upper springs are sleeved on the upper parts of the spring guide columns 7 after the upper parts of the spring guide columns 7 extend out of the sliding through holes, lock nuts are installed above the upper springs, so as to vertically constrain the upper springs; lower springs are sleeved on the lower parts of the spring guide columns 7 after the lower parts of the spring guide columns 7 extend out of the sliding through holes, and the intermediate cutter 2 is fixedly connected with the lower springs through lock nuts 8 at the lower positions of the lower springs. The rear side of the upper part of the intermediate cutter 2 can contact with the front side of the rear clamping block 9, and plays a certain horizontal limiting role. The left and right sides of the intermediate cutter 2 are provided with limiting recesses one 16, the left and right side walls of the inner cavity of the middle pressing cutter body 1 are provided with limiting protrusions one 15, and the limiting recesses one 16 are vertically slidably connected with the corresponding limiting protrusions one 15, so that the intermediate cutter 2 is vertically slidably installed on the middle pressing cutter body 1.
[0027] Meanwhile, the utility model also is provided with rear abutment portion 22 in the upper rear end of intermediate sword 2, and rear abut part 22 can abut with the upper end surface of rear clamping block 9 when intermediate sword 2 is in the state of extension, and is located above rear clamping block 9 when intermediate sword 2 is in the state of retraction, and front abutment portion 24 is provided in the upper front end of intermediate sword 2, and front abutment portion 24 can abut with the step surface 23 of intermediate block 3 when intermediate sword 2 is in the state of extension.
[0028] Based on this, when controlling the lifting of intermediate sword 2, that is, controlling the extension and retraction of intermediate sword 2, the utility model can control the up-down movement of the hole-connected plate connected with the cylinder driving the up-down movement of intermediate sword 2, and then drive the up-down movement of press pin 12 and press rod 6 through the hole-connected plate. When press rod 6 moves downward, it will first drive intermediate sword 2 to move downward until intermediate sword 2 abuts with rear clamping block 9, and then continue to compress lower spring. Meanwhile, in this process, it can drive intermediate block 3 to move horizontally backward through the linkage structure formed between front push shaft 4, rotating shaft 14, intermediate block 3 and middle sword body 1, and finally make the step surface 23 of intermediate block 3 abut with front abutment portion 24 of intermediate sword 2, so as to realize the horizontal constraint and vertical constraint of intermediate sword 2. Conversely, when press rod 6 moves upward, it will first move upward relative to spring guide column 7 under the action of lower spring, and drive intermediate block 3 to move horizontally forward through the linkage structure formed between front push shaft 4, rotating shaft 14, intermediate block 3 and middle sword body 1. Then, after driving block 5 contacts and presses upper spring, press rod 6 will drive intermediate sword 2 to move upward until the lower end of limiting groove one 16 of intermediate sword 2 abuts with limiting protrusion one 15 at middle sword body 1. Meanwhile, in this process, it can continue to drive intermediate block 3 to move horizontally forward through the linkage structure formed between front push shaft 4, rotating shaft 14, intermediate block 3 and middle sword body 1, so as to avoid the interference between intermediate sword 2 and intermediate block 3.
[0029] The above description of disclosed embodiments enables those skilled in the art to carry out or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A telescopic relief center for bending centers, comprising a center body (1), characterized in that, The middle pressure cutter body (1) is vertically and slidably provided with a pressing rod (6), the lower end of the pressing rod (6) is provided with a driving block (5), the front side of the driving block (5) is hingedly provided with a front pushing shaft (4), the end of the front pushing shaft (4) away from the driving block (5) is fixedly provided with a rotating shaft (14), the rotating shaft (14) is hingedly provided with an intermediate block (3), the intermediate block (3) is horizontally and slidably provided on the middle pressure cutter body (1), the rear of the driving block (5) is provided with a rear clamping block (9), the rear clamping block (9) is fixedly provided on the middle pressure cutter body (1); the left and right ends of the driving block (5) are both provided with a sliding through hole, the sliding through hole is vertically and slidably provided with a spring guide column (7), the upper part of the spring guide column (7) is provided with an upper spring after extending out of the sliding through hole, the lower part of the spring guide column (7) is provided with a lower spring and fixedly connected with a middle cutter (2) after extending out of the sliding through hole, the middle cutter (2) is vertically and slidably provided on the middle pressure cutter body (1), the rear end of the upper part of the middle cutter (2) is provided with a rear abutting portion (22), the rear abutting portion (22) is located above the upper end surface of the rear clamping block (9) and can abut against the upper end surface of the rear clamping block (9); the front end of the upper part of the middle cutter (2) is provided with a front abutting portion (24), the front abutting portion (24) can be located below the intermediate block (3) and horizontally abut against the lower part of the intermediate block (3).
2. The retractable centering medium pressure knife according to claim 1, characterized in that, The side wall of the middle pressure cutter body (1) is provided with a sliding long hole (20), the sliding long hole (20) is vertically and slidably provided with a pressing pin (12), one end of the pressing pin (12) extends out of the sliding long hole (20) and is fixedly connected with the pressing rod (6), one end of the pressing pin (12) extends out of the sliding long hole (20) and is located outside the middle pressure cutter body (1).
3. The retractable centering medium pressure knife according to claim 2, characterized in that, The front side of the middle pressure cutter body (1) is provided with a limiting groove three (19), the sliding long hole (20) is located in the limiting groove three (19).
4. The retractable centering medium pressure knife according to claim 1, wherein, The lower end surface of the intermediate block (3) can abut against the upper end surface of the front abutting portion (24), the front end of the lower end surface of the intermediate block (3) is provided with a stepped surface (23), the stepped surface (23) is rearwardly arranged and can abut against the front end surface of the front abutting portion (24).
5. The retractable centering medium pressure knife according to claim 1, wherein, The left and right side walls of the inner cavity of the middle pressure cutter body (1) are both provided with a limiting protrusion one (15), the left and right sides of the middle cutter (2) are both provided with a limiting groove one (16), the limiting groove one (16) is vertically and slidably connected with the corresponding limiting protrusion one (15).
6. The retractable centering medium pressure knife according to claim 1, wherein, The left and right side walls of the inner cavity of the middle pressure cutter body (1) are both provided with a limiting groove two (11), the left and right sides of the intermediate block (3) are both provided with a limiting protrusion two (18), the limiting groove two (11) is horizontally and slidably connected with the corresponding limiting protrusion two (18).
7. The retractable centering medium pressure knife according to claim 1, wherein, The rear side of the intermediate block (3) is provided with an avoiding groove (21).
8. The retractable centering medium pressure knife according to claim 1, wherein, Both ends of the rear clamping block (9) are provided with a mounting hole, the rear clamping block (9) is fixedly mounted on the middle pressure cutter body (1) through the fastener (10) penetrating the mounting hole.
9. The retractable centering medium pressure knife according to claim 8, characterized in that, The rear side of the middle pressure cutter body (1) is provided with a mounting groove (17), the rear clamping block (9) is mounted in the mounting groove (17).
10. The retractable centering medium pressure knife according to claim 1, wherein, The rear side of the upper part of the middle cutter (2) can contact with the front side of the rear clamping block (9).