A jig clamping assist mechanism

Abstract

The present application relates to the technical field of clamps, in particular to a clamp clamping auxiliary mechanism, comprising an operation table for placing a workpiece, the operation table being provided with an auxiliary part matched with a protruding column on the workpiece; the auxiliary part comprises an auxiliary pressing oil cylinder located at one side of the protruding column, the other side of the protruding column is provided with a fixing handle, the fixing handle is hinged with a link handle, the link handle is provided with a V-shaped clamping block for abutting and supporting the protruding column, the side of the link handle facing the protruding column is provided with a pushing-out oil cylinder, the telescopic end of the pushing-out oil cylinder is connected with the link handle, a main pressing oil cylinder is arranged between the link handle and the auxiliary pressing oil cylinder, the oil inlet of the pushing-out oil cylinder is connected with the oil return of the main pressing oil cylinder, the oil return of the pushing-out oil cylinder is connected with the oil inlet of the main pressing oil cylinder, the side of the link handle away from the protruding column is provided with an auxiliary supporting oil cylinder, the mechanism realizes the requirements of auxiliary support and holding by using the oil return of the main pressing oil cylinder without increasing additional oil circuits, thereby reducing the cost.

Description

Technical Field

[0001] This invention relates to the field of clamping technology, and in particular to a clamping auxiliary mechanism. Background Technology

[0002] For fixtures and tooling, during the fixture design stage, it is necessary to combine the actual product structure and add auxiliary support mechanisms at the weaker parts of the product to provide support for the workpiece during processing and prevent vibration, deformation or breakage.

[0003] For example, a patent published on May 28, 2021, with publication number CN213289448U, entitled "A Workpiece Fixture for Aluminum Alloy Parts," includes a worktable, a first clamping mechanism, a second clamping mechanism, and an auxiliary clamping mechanism. The first and second clamping mechanisms are respectively located on both sides of the worktable, clamping and fixing the two ends of the workpiece. The auxiliary clamping mechanisms are respectively located in the middle of the workpiece and at the extension of one end of the workpiece. The first and second clamping mechanisms form a triangular clamping point for the workpiece, and positioning protrusions are set on the T-shaped bracket and the column to position the workpiece, ensuring the stability of the workpiece clamping. Adding an auxiliary clamping mechanism further improves the stability of workpiece clamping. A support cylinder is used as the bottom support for the workpiece, ensuring that the support cylinder is in close contact with the workpiece and that the workpiece is not deformed by the support cylinder. However, the applicant found that the workpiece processing requires the use of a first quick clamp, a second quick clamp, a third quick clamp, and a support cylinder, which requires four hydraulic circuits. In actual production, in order to unify equipment management, simplify the clamping process, and avoid clamping errors, production companies will make unified requirements on the number of hydraulic stations and hydraulic circuits of the equipment. Usually, there are three inlets and one outlet hydraulic circuits. This requires adding an additional hydraulic circuit, which increases costs. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a clamping auxiliary mechanism to solve the problem of increased cost.

[0005] To achieve the above objectives, the present invention provides a clamping auxiliary mechanism, comprising an operating table for placing a workpiece, the workpiece having a large opening and multiple protruding posts, and multiple auxiliary components on the operating table that mate with each of the protruding posts; each auxiliary component includes an auxiliary clamping cylinder located on one side of each protruding post, the telescopic end of the auxiliary clamping cylinder having an auxiliary clamping rod for clamping the protruding post, and a fixing handle connected to the operating table on the other side of each protruding post, the fixing handle being hinged to a connecting handle, the side of the connecting handle facing the protruding post having a V-shaped locking block for abutting and supporting the protruding post, the connecting handle facing the protruding post having a V-shaped locking block for abutting and supporting the protruding post. A push-out cylinder is provided on one side of the protruding post. The telescopic end of the push-out cylinder is connected to the connecting handle. A main clamping cylinder for holding the protruding post is provided between the connecting handle and the auxiliary clamping cylinder. The telescopic end of the main clamping cylinder is connected to a main clamping rod for holding the protruding post. The main clamping rod is located above or to one side of the protruding post. The oil inlet of the push-out cylinder is connected to the oil return of the main clamping cylinder, and the oil return of the push-out cylinder is connected to the oil inlet of the main clamping cylinder. An auxiliary support cylinder is provided on the side of the connecting handle away from the protruding post. The telescopic end of the auxiliary support cylinder is connected to an auxiliary support rod for contacting and tightening the connecting handle.

[0006] Optionally, an elastic spring is connected to one end of the connecting handle that is connected to the ejection cylinder, and the other end of the elastic spring is connected to the operating table through the base of the auxiliary support cylinder.

[0007] Optionally, the other end of the link handle is slidably connected to a limiting block located on the operating table, and the limiting block has a limiting groove slidably connected to the link handle on the side facing the fixed handle.

[0008] Optionally, the length of the portion of the link handle extending into the limiting groove is less than the depth of the limiting groove.

[0009] Optionally, a holding member is provided on the operating table. The holding member passes through a large opening in the workpiece. The holding member includes a holding motor connected to the operating table. A reducer is connected to the output end of the holding motor. A first speed ring and a second speed ring are provided on the reducer. The speed of the first speed ring is less than the speed of the second speed ring. A side holding plate is fixedly connected to the side wall of the first speed ring. A drive shaft is rotatably connected to the side holding plate. The drive shaft is driven by the second speed ring. An upper holding plate is fixedly connected to the drive shaft.

[0010] Optionally, the drive shaft and the second speed ring are connected by a transmission belt.

[0011] Optionally, a side pressure elastic pad is provided on the side of the side pressure holding plate away from the pressure holding motor, and a lower pressure elastic pad is provided below the upper pressure holding plate.

[0012] Optionally, an elastic rod is provided at one end of the upper pressure plate away from the side pressure plate, and the elastic rod is on the same plane as the upper pressure plate.

[0013] Optionally, both the side pressure elastic pad and the downward pressure elastic pad are provided with elastic blocks.

[0014] The beneficial effects of the present invention are as follows: The clamping auxiliary mechanism provided by the present invention solves the problem of insufficient hydraulic station oil circuit by utilizing the return oil circuit of the main clamping cylinder without adding an additional oil circuit, thereby achieving the requirements of auxiliary support and clamping, and thus reducing costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0018] Figure 3 This is a schematic diagram of the structure of the cooperation between the auxiliary component and the workpiece of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the workpiece of the present invention;

[0020] Figure 5 This is a schematic diagram of the pressure-holding component structure of the present invention;

[0021] Figure 6 This is a side view of the pressing member of the present invention.

[0022] In the diagram: 1. Operating table; 2. Workpiece; 3. Push-out cylinder; 4. Connecting handle; 5. Fixing handle; 6. Hinge; 7. V-shaped locking block; 8. Limiting block; 9. Limiting groove; 10. Elastic spring; 11. Auxiliary support cylinder; 12. Auxiliary clamping cylinder; 13. Transmission belt; 14. Holding component; 15. Holding motor; 16. Reducer; 17. First speed ring; 18. Second speed ring; 19. Side holding plate; 20. Upper holding plate; 21. Drive shaft. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0024] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by those skilled in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figures 1 to 6 As shown, a clamping auxiliary mechanism includes an operating table 1 for placing a workpiece 2. The workpiece 2 has a large opening and multiple protruding posts. The operating table 1 is provided with multiple auxiliary components that cooperate with each of the protruding posts. Each auxiliary component includes an auxiliary clamping cylinder 12 located on one side of a protruding post. The telescopic end of the auxiliary clamping cylinder 12 is provided with an auxiliary clamping rod for clamping the protruding post. A fixing handle 5 connected to the operating table 1 is provided on the other side of the protruding post. The fixing handle 5 is hinged to a connecting handle 4 via a hinge 6. A V-shaped locking block 7 for abutting and supporting the protruding post is provided on the side of the connecting handle 4 facing the protruding post. A push-out cylinder 3 is provided on one side, and the telescopic end of the push-out cylinder 3 is connected to the connecting handle 4. A main clamping cylinder for holding the protruding column is provided between the connecting handle 4 and the auxiliary clamping cylinder 12. The telescopic end of the main clamping cylinder is connected to a main clamping rod for holding the protruding column. The main clamping rod is located above or to one side of the protruding column. The oil inlet of the push-out cylinder 3 is connected to the oil return of the main clamping cylinder, and the oil return of the push-out cylinder 3 is connected to the oil inlet of the main clamping cylinder. An auxiliary support cylinder 11 is provided on the side of the connecting handle 4 away from the protruding column. The telescopic end of the auxiliary support cylinder 11 is connected to an auxiliary support rod for contacting and tightening the connecting handle 4.

[0026] When workpiece 2 needs to be loosened, the auxiliary support cylinder 11, auxiliary clamping cylinder 12, and main clamping cylinder are released. The hydraulic oil in the return oil circuit of the main clamping cylinder enters the ejection cylinder 3, and the extension end of the ejection cylinder 3 extends, pushing the connecting handle 4 and the V-shaped locking block 7 to move away from the protruding post, so that the V-shaped locking block 7 no longer restricts the protruding post. At this time, workpiece 2 can be removed, leaving space for the next loading of workpiece 2. When workpiece 2 needs to be tightened, the auxiliary support cylinder 11, auxiliary clamping cylinder 12, and main clamping cylinder are all activated. The return oil circuit of the main clamping cylinder is depressurized, and the extension end of the ejection cylinder 3... The retraction causes the connecting handle 4 and the V-shaped locking block 7 to move closer to the protruding post, so that the V-shaped locking block 7 is pressed against the protruding post, restricting and locking the protruding post to achieve the function of auxiliary support. At the same time, it will not affect the clamping of the workpiece 2. The auxiliary support cylinder 11 controls the extension of the auxiliary support rod to press against the connecting handle 4, and the auxiliary clamping cylinder 12 controls the extension of the auxiliary clamping rod to press against the workpiece 2. The auxiliary components hold the processing part of the workpiece 2 tightly. This mechanism solves the problem of insufficient hydraulic station oil circuit by utilizing the return oil circuit of the main clamping cylinder without adding an additional oil circuit, and achieves the requirements of auxiliary support and clamping, thereby reducing costs.

[0027] An elastic spring 10 is connected to one end of the connecting handle 4 that is connected to the ejector cylinder 3. The other end of the elastic spring 10 is connected to the operating table 1 through the base of the auxiliary support cylinder 11. This allows the extension end of the ejector cylinder 3 to retract when the return oil circuit of the main clamping cylinder is depressurized, and the elastic spring 10 can pull the connecting handle 4 toward the workpiece 2.

[0028] In order to limit the swing area of ​​the connecting handle 4 and facilitate the support and clamping of the workpiece 2, the other end of the connecting handle 4 is slidably connected to a limiting block 8 located on the operating table 1. The limiting block 8 has a limiting groove 9 slidably connected to the connecting handle 4 on the side facing the fixed handle 5. The length of the part of the connecting handle 4 that extends into the limiting groove 9 is less than the depth of the limiting groove 9.

[0029] A holding member 14 is provided on the operating table 1. The holding member 14 passes through the large opening of the workpiece 2. The holding member 14 includes a holding motor 15 connected to the operating table 1. The output end of the holding motor 15 is connected to a reducer 16. The reducer 16 is provided with a first speed ring 17 and a second speed ring 18. The speed of the first speed ring 17 is less than the speed of the second speed ring 18. A side holding plate 19 is fixedly connected to the side wall of the first speed ring 17. A drive shaft 21 is rotatably connected to the side holding plate 19 through a bearing. The drive shaft 21 is connected to... The second speed ring 18 is connected by a transmission belt 13. An upper pressure plate 20 is fixedly connected to the drive shaft 21. When it is necessary to press the workpiece 2, the pressure motor 15 is started, which drives the first speed ring 17 and the second speed ring 18 to rotate. When rotating, the speed of the first speed ring 17 is less than that of the second speed ring 18. The side pressure plate 19 swings to one side to clamp the side of the workpiece 2, and the upper pressure plate 20 swings downward to press the top of the workpiece 2. The swing angle of the upper pressure plate 20 is greater than that of the side pressure plate 19, which improves the pressing efficiency.

[0030] In order to reduce the probability of crushing or damaging the workpiece 2 when the upper pressure plate 20 and the side pressure plate 19 are pressing it, a side pressure elastic pad is provided on the side of the side pressure plate 19 away from the pressure motor 15, and a lower pressure elastic pad is provided below the upper pressure plate 20.

[0031] An elastic rod is provided at one end of the upper pressure plate 20 away from the side pressure plate 19. The elastic rod is on the same plane as the upper pressure plate 20. In order to facilitate the upper pressure plate 20 to press the workpiece 2, the elastic rod is used to press the workpiece 2, thereby reducing the possibility of deformation of the workpiece 2.

[0032] To reduce the probability of crushing or damaging the workpiece 2 when the upper pressure plate 20 and the side pressure plate 19 are pressing it, elastic blocks are provided in both the side pressure elastic pad and the lower pressure elastic pad. The elastic blocks can be made of sponge, silicone, etc.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples. The invention is not limited to the above-described embodiments, that is, it does not mean that the invention must rely on the above methods and structures to be implemented. Under the concept of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0034] The embodiments of this invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A clamping auxiliary mechanism, comprising an operating table (1) for placing a workpiece (2), characterized in that, The workpiece (2) has a large opening and multiple protruding pillars. The operating table (1) has multiple auxiliary components that cooperate with each of the protruding pillars. The auxiliary components include an auxiliary clamping cylinder (12) located on one side of the protruding pillar. The telescopic end of the auxiliary clamping cylinder (12) is provided with an auxiliary clamping rod for clamping the protruding pillar. The other side of the protruding pillar is provided with a fixed handle (5) connected to the operating table (1). The fixed handle (5) is hinged to a connecting handle (4) via a hinge (6). The side of the connecting handle (4) facing the protruding pillar is provided with a V-shaped locking block (7) for abutting and supporting the protruding pillar. The side of the connecting handle (4) facing the protruding pillar is provided with a push-out cylinder (3). The telescopic end of the ejection cylinder (3) is connected to the connecting handle (4). A main clamping cylinder for pressing the protruding column is provided between the connecting handle (4) and the auxiliary clamping cylinder (12). The telescopic end of the main clamping cylinder is connected to a main clamping rod for pressing the protruding column. The main clamping rod is located above or to one side of the protruding column. The oil inlet of the ejection cylinder (3) is connected to the oil return of the main clamping cylinder. The oil return of the ejection cylinder (3) is connected to the oil inlet of the main clamping cylinder. An auxiliary support cylinder (11) is provided on the side of the connecting handle (4) away from the protruding column. The telescopic end of the auxiliary support cylinder (11) is connected to an auxiliary support rod for contacting and pressing the connecting handle (4).

2. The clamping auxiliary mechanism according to claim 1, characterized in that, The link handle (4) is connected to one end of the ejection cylinder (3) with an elastic spring (10), and the other end of the elastic spring (10) is connected to the operating table (1) through the base of the auxiliary support cylinder (11).

3. The clamping auxiliary mechanism according to claim 1, characterized in that, The other end of the link handle (4) is slidably connected to a limiting block (8) located on the operating table (1). The limiting block (8) has a limiting groove (9) slidably connected to the link handle (4) on the side facing the fixed handle (5).

4. The clamping auxiliary mechanism according to claim 3, characterized in that, The length of the portion of the link handle (4) that extends into the limiting groove (9) is less than the depth of the limiting groove (9).

5. The clamping auxiliary mechanism according to claim 1, characterized in that, The operating table (1) is provided with a holding member (14), which passes through the large opening of the workpiece (2). The holding member (14) includes a holding motor (15) connected to the operating table (1). The output end of the holding motor (15) is connected to a reducer (16). The reducer (16) is provided with a first speed ring (17) and a second speed ring (18). The speed of the first speed ring (17) is less than the speed of the second speed ring (18). A side holding plate (19) is fixedly connected to the side wall of the first speed ring (17). A drive shaft (21) is rotatably connected to the side holding plate (19). The drive shaft (21) is connected to the second speed ring (18) in a transmission connection. An upper holding plate (20) is fixedly connected to the drive shaft (21).

6. The clamping auxiliary mechanism according to claim 5, characterized in that, The drive shaft (21) and the second speed ring (18) are connected by a transmission belt (13).

7. The clamping auxiliary mechanism according to claim 5, characterized in that, A side pressure elastic pad is provided on the side of the side pressure holding plate (19) away from the pressure holding motor (15), and a lower pressure elastic pad is provided below the upper pressure holding plate (20).

8. The clamping auxiliary mechanism according to claim 5, characterized in that, An elastic rod is provided at one end of the upper pressure plate (20) away from the side pressure plate (19), and the elastic rod is on the same plane as the upper pressure plate (20).

9. A clamping auxiliary mechanism according to claim 7, characterized in that, Both the side pressure elastic pad and the downward pressure elastic pad are equipped with elastic blocks.

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