A lifting and adjusting mechanism for a bending machine

Abstract

The utility model relates to the field of lifting and lowering of bending machines, and discloses a lifting and adjusting mechanism of a bending machine, comprising a casing, wherein the casing is movably provided with a bending mechanism, a limiting portion is provided on the inner side of the casing, and the bending mechanism is hinged with a supporting portion, a first torsion spring is connected between the supporting portion and the bending mechanism, and the first torsion spring presses the supporting portion against the limiting portion; the limiting portion comprises a mounting plate and a rack, the mounting plate is detachably connected to the casing, and the rack is fixedly arranged on the mounting plate; the supporting portion comprises a sliding sleeve, a cylinder, and a push rod, the sliding sleeve is hinged to the bending mechanism, the push rod is slidably connected to the sliding sleeve, and the cylinder is arranged on the sliding sleeve to drive the push rod to slide on the sliding sleeve; when the bending mechanism is lifted and lowered, the cylinder piston is extended and retracted to press the push rod against the rack to limit the bending mechanism, thereby reducing the stress on other components. The utility model has the effect of limiting the bending mechanism and reducing the stress on other components.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machine lifting, in particular to a bending machine lifting and lowering regulating mechanism. Background Art

[0002] A bending machine is a device used to bend and shape metal sheets. It plays an important role in the metal processing industry and manufacturing industry. The main function of the bending machine is to press metal sheets into parts of various shapes according to process requirements, such as automotive parts, home appliances, building materials, etc.

[0003] The Chinese utility model patent with authorization announcement number CN213436848U discloses an automatic lifting bending machine, including a casing and a bending mechanism, the top of the casing is fixedly connected to a pin shaft, the inside of the pin shaft is movably connected to a top cover, the top of the top cover is fixedly connected to a handle, one end of the top cover is provided with a groove, the inside of the groove is provided with an arc probe, one end of the arc probe is fixedly connected to a third spring, the bottom of the groove is provided with an arc groove, and both sides of the casing are fixedly connected to fixed sleeves.

[0004] However, when the prior art is implemented, the weight of the bending mechanism is completely borne by the bevel gear, the threaded rod and the threaded sleeve. When the material is processed and bent, the weight of the bending mechanism increases. Therefore, long-term work may cause damage to the teeth of the threaded rod, the threaded sleeve and the bevel gear, resulting in inaccurate lifting and positioning. Utility Model Content

[0005] The utility model aims to provide a lifting and adjusting mechanism for a bending machine, which has the effects of limiting the position of the bending mechanism and reducing the stress on other components.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a lifting and adjusting mechanism of a bending machine, including a casing, the casing is movably provided with a bending mechanism, a limiting part is provided on the inner side of the casing, the bending mechanism is hinged with a supporting part, a first torsion spring is connected between the supporting part and the bending mechanism, and the first torsion spring pushes the supporting part against the limiting part.

[0007] By adopting the above technical solution and setting the limiting part, when the bending mechanism moves up and down, the first torsion spring pushes the supporting part against the limiting part for limiting, thereby reducing the stress on other components, thereby achieving the purpose of limiting and reducing the stress on other components.

[0008] The utility model is further configured as follows: the limiting portion comprises a mounting plate and a rack, the mounting plate is detachably connected to the housing, and the rack is fixedly arranged on the mounting plate.

[0009] The utility model is further configured as follows: the support portion comprises a sliding sleeve, a cylinder and a push rod; the sliding sleeve is hinged to the bending mechanism; the push rod is slidably connected to the sliding sleeve; and the cylinder is arranged on the sliding sleeve to drive the push rod to slide on the sliding sleeve.

[0010] By adopting the above technical solution, a cylinder is set up, and the cylinder drives the push rod to slide in the sliding sleeve, thereby controlling the connection and disconnection of the push rod and the rack, so as to achieve the purpose of limiting the rise and not limiting the descent of the bending mechanism.

[0011] The utility model is further configured as follows: the first torsion spring is connected between the sliding sleeve and the bending mechanism.

[0012] The utility model is further configured as follows: the push rod is detachably connected to a guide rod, and the sliding sleeve is provided with a guide groove for the guide rod to penetrate.

[0013] The utility model is further configured as follows: a connecting ring is connected to the piston end of the cylinder, and the connecting ring is used for the guide rod to slide.

[0014] By adopting the above technical solution, the guide rod slides in the guide groove and the through groove, so that the push rod is slidably connected in the sliding sleeve, which facilitates the removal and replacement of the push rod.

[0015] The utility model is further configured as follows: the push rod is provided with a through hole for the guide rod to slide, the two ends of the guide rod are hinged with clamps, the side of the clamp close to the connecting ring is configured to be arc-shaped, a second torsion spring is connected between the clamp and the guide rod, and the guide rod is provided with a recess for the clamp to rotate.

[0016] By adopting the above technical solution and setting a clamp, when the guide rod is inserted or pulled out of the connecting ring, the clamp is squeezed into the recess. When the second torsion spring is not subjected to force, the second torsion spring presses the clamp against the outside of the connecting ring. The clamps at both ends press against the connecting ring, thereby positioning the guide rod to prevent it from falling.

[0017] The utility model is further configured as follows: a handle is provided on the mounting plate, a first slide groove is provided on the housing, a first slider is provided on the mounting plate, and the first slider is embedded in the first slide groove.

[0018] The utility model is further configured as follows: the sliding sleeve is provided with a second sliding groove, the push rod is provided with a second sliding block, and the second sliding block is embedded in the second sliding groove.

[0019] The utility model is further configured as follows: a mounting block is arranged inside the housing, the mounting plate is threadedly connected with a bolt, and one end of the bolt away from the mounting plate is threadedly connected to the mounting block.

[0020] The beneficial effects of the utility model are as follows: by arranging a push rod and a sliding sleeve, the cylinder drives the push rod to slide in the sliding sleeve to control the connection between the push rod and the rack, and the first torsion spring can ensure that the torsion spring drives the sliding sleeve to a certain angle, so that the sliding sleeve can drive the push rod to connect with the rack, thereby ensuring that the supporting mechanism positions and limits the bending mechanism when it rises, and bears the weight of the bending mechanism. Compared with the prior art, the force between the bevel gear, the threaded sleeve and the threaded rod is reduced, and the service life is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0024] Figure 3 yes Figure 2 Schematic diagram of the local structure at point I.

[0025] Figure 4 It is a structural schematic diagram of the support part of the utility model.

[0026] Figure 5 It is a schematic diagram of the cross-sectional structure of the top rod of the support part in the sliding direction of the utility model.

[0027] Figure 6 yes Figure 5 Schematic diagram of the local structure of the middle clamp.

[0028] Figure 7 It is a schematic diagram of the cross-sectional structure of the support part of the utility model perpendicular to the sliding direction of the top rod.

[0029] In the figure, 1, casing; 11, bending mechanism; 12, first slide groove; 13, mounting block; 2, limiting part; 21, mounting plate; 211, handle; 212; first slider; 213, bolt; 22, rack; 3, supporting part; 31, first torsion spring; 32, sliding sleeve; 321, guide groove; 322, second slide groove; 33, push rod; 331, through hole; 332, guide rod; 333, clamp; 334, second torsion spring; 335, notch; 336, second slider; 34, cylinder; 341, connecting ring. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment, a bending machine lifting and adjusting mechanism, such as Figure 1-Figure 7 As shown, it includes a casing 1, both sides of the casing 1 are provided with first slide grooves 12, the first slide grooves 12 are used to connect the mounting plate 21, the mounting plate 21 is provided with a first slider 212 corresponding to the first slide groove 12, a handle 211 is provided on the outside of the mounting plate 21, the mounting plate 21 is threadedly connected with a bolt 213, a mounting block 13 corresponding to the bolt 213 is provided inside the casing 1, one end of the bolt 213 away from the mounting plate 21 is threadedly connected to the mounting block 13, a rack 22 is provided on the inner side of the mounting plate 21, the rack 22 and the mounting block 13 form a limiting part 2, a lifting and lowering bending mechanism 11 is provided in the casing 1, a sliding sleeve 32 is hingedly connected to the bending mechanism 11 near the rack 22, and the sliding sleeve 32 is connected to the mounting block 13. A first torsion spring 31 is connected between the bending mechanisms 11, a push rod 33 is slidably connected in the sliding sleeve 32, a through hole 331 is provided in the push rod 33, the through hole 331 penetrates the push rod 33, a guide groove 321 is provided in the sliding sleeve 32, the through hole 331 corresponds to the guide groove 321, the push rod 33 is slidably connected to the guide rod 332, the guide rod 332 is penetrated in the push rod 33 through the through hole 331, the guide rod 332 penetrates the sliding sleeve 32 through the guide groove 321, a cylinder 34 is installed on the outside of the sliding sleeve 32, the cylinder body of the cylinder 34 is fixedly arranged on the sliding sleeve 32, a connecting ring 341 is fixedly connected to the piston end of the cylinder 34, and the guide rod 332 penetrates the connecting ring 341.

[0032] Further, such as Figure 1-Figure 7 As shown, both ends of the guide rod 332 are hinged with clamping pieces 333, and the side of the clamping pieces 333 that are close to each other is set to an arc shape. A second torsion spring 334 is connected between the clamping piece 333 and the guide rod 332, and the second torsion spring 334 pushes the clamping piece 333 against the connecting ring 341, so that the clamping pieces 333 at both ends clamp the connecting rings 341 on both sides to position the guide rod 332; the sliding sleeve 32 is provided with a second sliding groove 322, and the top rod 33 is provided with a second sliding block 336 corresponding to the sliding block, and the second sliding block 336 is embedded in the second sliding groove 322, and the guide rod 332 is provided with a recess 335 for the clamping piece 333 to rotate.

[0033] The working principle is as follows: when the bending mechanism 11 rises, the piston of the cylinder 34 extends to press the push rod 33 against the tooth groove of the rack 22 and keep it stationary. As the bending mechanism 11 rises, the first torsion spring 31 presses the push rod 33 against the tooth groove of the rack 22 in turn through the sliding sleeve 32. The rack 22 supports the push rod 33, thereby supporting the push rod 33 and the bending mechanism 11 to prevent them from falling, and plays a role in limiting, reducing the bearing force between the threaded sleeve, the threaded rod and the bevel gear. When the bending mechanism 11 descends, the piston of the cylinder 34 contracts to make the push rod 33 and the bevel gear The rack 22 disengages from contact and then descends. When the descending height is confirmed, the piston continues to push out and the push rod 33 is pressed against the rack 22 to position the bending mechanism 11. When the rack 22 needs to be replaced due to long-term work and friction, the bolt 213 is turned to remove the mounting plate 21 through the handle 211, and the new mounting plate 21 is replaced. When the push rod 33 needs to be replaced, the guide rod 332 is pulled to disconnect the guide rod 332 from the connecting ring 341, the sliding sleeve 32 and the push rod 33, and then the push rod 33 is taken out of the sliding sleeve 32 for replacement.

Claims

1. A lifting and adjusting mechanism for a bending machine, comprising a housing (1), wherein the housing (1) is movably provided with a bending mechanism (11), characterized in that: A limiting portion (2) is provided on the inner side of the housing (1); the bending mechanism (11) is hingedly connected with a supporting portion (3); a first torsion spring (31) is connected between the supporting portion (3) and the bending mechanism (11); the first torsion spring (31) pushes the supporting portion (3) toward the limiting portion (2); The limiting portion (2) comprises a mounting plate (21) and a rack (22); the mounting plate (21) is detachably connected to the housing (1); and the rack (22) is fixedly arranged on the mounting plate (21).

2. The lifting and lowering adjustment mechanism of a bending machine according to claim 1, characterized in that: The support portion (3) comprises a sliding sleeve (32), a cylinder (34) and a push rod (33); the sliding sleeve (32) is hinged to the bending mechanism (11); the push rod (33) is slidably connected to the sliding sleeve (32); and the cylinder (34) is arranged on the sliding sleeve (32) and is used to drive the push rod (33) to slide on the sliding sleeve (32).

3. A bending machine lifting and adjusting mechanism according to claim 2, characterized in that: The first torsion spring (31) is connected between the sliding sleeve (32) and the bending mechanism (11).

4. The lifting and lowering adjustment mechanism of a bending machine according to claim 3 is characterized in that: The push rod (33) is detachably connected to a guide rod (332), and the sliding sleeve (32) is provided with a guide groove (321) for the guide rod (332) to penetrate.

5. The lifting and lowering adjustment mechanism of a bending machine according to claim 4, characterized in that: The piston end of the cylinder (34) is connected to a connecting ring (341), and the connecting ring (341) allows the guide rod (332) to slide.

6. A bending machine lifting and adjusting mechanism according to claim 5, characterized in that: The push rod (33) is provided with a through hole (331) for the guide rod (332) to slide, and clamps (333) are hinged at both ends of the guide rod (332). The side of the clamp (333) close to the connecting ring (341) is arranged in an arc shape, and a second torsion spring (334) is connected between the clamp (333) and the guide rod (332). The guide rod (332) is provided with a notch (335) for the clamp (333) to rotate.

7. A bending machine lifting and adjusting mechanism according to claim 6, characterized in that: The mounting plate (21) is provided with a handle (211), the housing (1) is provided with a first sliding groove (12), the mounting plate (21) is provided with a first sliding block (212), and the first sliding block (212) is embedded in the first sliding groove (12).

8. The lifting and lowering adjustment mechanism of a bending machine according to claim 7, characterized in that: The sliding sleeve (32) is provided with a second sliding groove (322), and the push rod (33) is provided with a second sliding block (336), and the second sliding block (336) is embedded in the second sliding groove (322).

9. A bending machine lifting and adjusting mechanism according to claim 8, characterized in that: A mounting block (13) is arranged inside the housing (1), a bolt (213) is threadedly connected to the mounting plate (21), and one end of the bolt (213) away from the mounting plate (21) is threadedly connected to the mounting block (13).

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