Mould explosion preventing device of downward moving type bending machine
By installing an adjustable-height push rod and pressure sensor on the downward-moving bending machine, the problem of mold bursting caused by the error of the downward-moving lifting platform is solved, automatic protection is achieved, and the accuracy and safety of the equipment are improved.
Patent Information
- Application Number
- CN202423220234.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-26
AI Technical Summary
After prolonged use, the increased error of the lower lifting platform in a bottom-moving bending machine leads to excessive compression of the lower bending die, causing die breakage and affecting its use.
An adjustable-height push rod and pressure sensor are installed on the lower lifting platform. By adjusting the distance between the push rod and the machine head, the pressure sensor detects excessive extrusion and pauses the cylinder advance to prevent the lower die from being excessively extruded.
It automatically prevents excessive compression of the lower die of the downward-moving bending machine, avoids die bursting, and improves the accuracy and safety of the equipment.
Smart Images
Figure CN223833172U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bending machine technology, specifically to an explosion-proof mold device for a downward-moving bending machine. Background Technology
[0002] In the process of processing thin metal sheets into products, bending machines are often required for bending. Common bending machines include top-moving bending machines and bottom-moving bending machines. Among them, bottom-moving bending machines have a faster bending speed and are more flexible in processing small workpieces. They are especially suitable for bending large quantities of small thin sheet workpieces and are widely used.
[0003] Given that the thickness of thin plates may vary between different batches, the lifting distance of the lower lifting platform needs to be adjusted and calibrated before bending. Currently, the lower lifting platform of lower-motion bending machines on the market has a high accuracy of ±0.2 mm within 300 mm. However, in the process of bending thin plates with high hardness such as stainless steel, the error will increase with the increase of equipment usage time. This can lead to an increase in the rising distance of the lower lifting platform, causing excessive extrusion and breakage of the lower bending die, affecting its use. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides an explosion-proof mold device for a downward-moving bending machine, in order to prevent the mold of the downward-moving bending machine from exploding.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] An explosion-proof mold device for a downward-moving bending machine includes a fixed base installed on one side of the downward-moving lifting platform on the main body of the bending machine. Vertical guide columns are symmetrically fixedly connected to the fixed base on both sides. An adjusting screw located between the two guide columns is vertically fixedly connected to the fixed base. An adjusting knob is fixedly installed on the adjusting screw. A lifting seat is slidably sleeved on the upper end of the guide columns. The lifting seat is threadedly connected to the adjusting screw through a threaded hole at its bottom. A top rod is vertically fixedly connected to the upper surface of the lifting seat. A buffer pad and a pressure sensor are installed on the upper end of the top rod. The pressure sensor is located on top of the buffer pad.
[0007] Preferably, the fixed seat has an inverted L-shaped structure and is fixedly installed on the upper left corner of the lower moving lifting platform with bolts.
[0008] Preferably, the bolts are installed on the sides of the fixed base and the lower movable lifting platform.
[0009] Preferably, both guide posts are provided with scale markings in the vertical direction.
[0010] Preferably, a lower die base is fixedly installed on the lower lifting platform, and an upper die base located above the lower die base is fixedly installed at the bottom of the machine head of the bending machine body. An upper bending die and a lower bending die are respectively installed on the upper die base and the lower die base. The vertical distance between the pressure sensor and the machine head is not less than the distance between the upper bending die and the lower bending die.
[0011] Preferably, the upper end of the top rod is provided with a groove, the buffer pad is located in the groove, and at least half of the thickness of the pressure sensor is located in the groove.
[0012] Preferably, the buffer pad is an elastic rubber pad.
[0013] Preferably, the pressure sensor is signal-connected to the hydraulic cylinder controller that drives the lower lifting platform.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] This invention features an adjustable-height push rod and a pressure sensor on the lower lifting platform. When adjusting the lifting stroke of the lower lifting platform, the distance between the top of the pressure sensor on the push rod and the machine head is simultaneously adjusted. During operation, if the lower lifting platform rises too far, the pressure sensor at the top of the push rod receives pressure from the machine head, thereby pausing the hydraulic cylinder below the lower lifting platform via the hydraulic cylinder controller. This promptly stops the upper bending die from pressing against the lower bending die, preventing the lower bending die from excessive pressure and thus achieving automatic protection. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the installation of this utility model;
[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 3 This is a cross-sectional view of the present invention.
[0019] In the diagram: 1. Bending machine body; 101. Machine head; 2. Lower lifting platform; 3. Fixed base; 4. Guide column; 401. Scale mark; 5. Adjusting screw; 6. Adjusting knob; 7. Lifting seat; 701. Threaded hole; 8. Push rod; 801. Groove; 9. Buffer pad; 10. Pressure sensor; 11. Bolt; 12. Lower die base; 13. Upper die base; 14. Upper bending die; 15. Lower bending die; 16. Hydraulic cylinder controller. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] like Figure 1-3 As shown, this utility model provides a technical solution: a down-moving bending machine explosion-proof mold device, including a fixed seat 3 installed on one side of the down-moving lifting platform 2 on the main body 1 of the bending machine. The fixed seat 3 has an inverted L-shaped structure and is fixedly installed on the upper left corner of the down-moving lifting platform 2 by bolts 11. The bolts 11 are installed on the side of the fixed seat 3 and the down-moving lifting platform 2.
[0022] Vertical guide posts 4 are symmetrically fixedly connected to the fixed base 3. Both guide posts 4 are marked with scale marks 401 in the vertical direction. An adjusting screw 5 located between the two guide posts 4 is vertically fixedly connected to the fixed base 3. An adjusting knob 6 is fixedly installed on the adjusting screw 5. A lifting seat 7 is slidably sleeved on the upper end of the guide post 4. The lifting seat 7 is threadedly connected to the adjusting screw 5 through a threaded hole 701 at the bottom. A top rod 8 is vertically fixedly connected to the upper surface of the lifting seat 7.
[0023] A buffer pad 9 and a pressure sensor 10 are installed on the upper end of the push rod 8. A groove 801 is provided on the upper end of the push rod 8. The buffer pad 9 is located in the groove 801. At least half of the thickness of the pressure sensor 10 is located in the groove 801. The buffer pad 9 is an elastic rubber pad. The pressure sensor 10 is connected to the hydraulic cylinder controller 16 that drives the lower lifting platform 2. The pressure sensor 10 is located on top of the buffer pad 9.
[0024] A lower die base 12 is fixedly installed on the lower lifting platform 2. An upper die base 13 located above the lower die base 12 is fixedly installed at the bottom of the machine head 101 of the bending machine body 1. A bending upper die 14 and a bending lower die 15 are respectively installed on the upper die base 13 and the lower die base 12. The vertical distance between the pressure sensor 10 and the machine head 101 is not less than the distance between the bending upper die 14 and the bending lower die 15.
[0025] Working principle:
[0026] When adjusting the lower lifting platform 2 to form the bending shape, the position height of the push rod 8 is adjusted synchronously. When the lower lifting platform 2 rises to its maximum stroke, the position height of the lifting seat 7 is adjusted by turning the adjustment knob 6 so that the pressure sensor 10 at the top of the push rod 8 just contacts the lower surface of the machine head 101. During operation, the thin plate is inserted between the upper bending die 14 and the lower bending die 15. The hydraulic cylinder in the bending machine body 1 drives the lower lifting platform 2 to rise. The lower bending die 15 and the upper bending die 14 jointly squeeze the thin plate to achieve bending. When an error occurs or the rising distance of the lower lifting platform 2 increases, the pressure sensor 10 will receive a pressure signal from the machine head 101. The hydraulic cylinder controller 16 will stop the hydraulic cylinder of the lower lifting platform 2 from continuing to advance, and promptly stop the upper bending die 14 from squeezing the lower bending die 15, thereby preventing the lower bending die 15 from being over-squeezed and bursting.
[0027] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bottom-moving type explosion-proof mold device for a bending machine, characterized in that: The device includes a fixed seat (3) on one side of the lower lifting platform (2) installed on the main body (1) of the bending machine. Vertical guide columns (4) are fixedly connected symmetrically on the left and right sides of the fixed seat (3). An adjusting screw (5) located between the two guide columns (4) is fixedly connected on the fixed seat (3). An adjusting knob (6) is fixedly installed on the adjusting screw (5). A lifting seat (7) is slidably sleeved on the upper end of the guide column (4). The lifting seat (7) is threadedly connected to the adjusting screw (5) through a threaded hole (701) provided at the bottom. A top rod (8) is fixedly connected vertically on the upper surface of the lifting seat (7). A buffer pad (9) and a pressure sensor (10) are installed on the upper end of the top rod (8). The pressure sensor (10) is located on the top of the buffer pad (9).
2. The explosion-proof mold device for a downward-moving bending machine according to claim 1, characterized in that: The fixed seat (3) is an inverted L-shaped structure and is fixedly installed on the upper left corner of the lower moving lifting platform (2) by bolts (11).
3. The explosion-proof mold device for a downward-moving bending machine according to claim 2, characterized in that: The bolt (11) is installed on the side of the fixed seat (3) and the lower moving lifting platform (2).
4. The explosion-proof mold device for a downward-moving bending machine according to claim 1, characterized in that: Both guide posts (4) are provided with scale marks (401) in the vertical direction.
5. The explosion-proof mold device for a downward-moving bending machine according to claim 1, characterized in that: The lower moving lifting platform (2) is fixedly installed with a lower die base (12), and the bottom of the machine head (101) of the bending machine body (1) is fixedly installed with an upper die base (13) located above the lower die base (12). The upper die base (13) and the lower die base (12) are respectively installed with a bending upper die (14) and a bending lower die (15). The vertical distance between the pressure sensor (10) and the machine head (101) is not less than the distance between the bending upper die (14) and the bending lower die (15).
6. The explosion-proof mold device for a downward-moving bending machine according to claim 1, characterized in that: The top rod (8) has a groove (801) at its upper end, the buffer pad (9) is located in the groove (801), and the pressure sensor (10) has at least half of its thickness located in the groove (801).
7. The explosion-proof mold device for a downward-moving bending machine according to claim 1, characterized in that: The buffer pad (9) is an elastic rubber pad.
8. The explosion-proof mold device for a downward-moving bending machine according to claim 1, characterized in that: The pressure sensor (10) is connected to the cylinder controller (16) that drives the lower lifting platform (2).