Clamp anti-collapse local supporting structure

Abstract

The utility model belongs to the technical field of clamping devices, and provides a clamp anti-collapse local supporting structure which comprises a supporting base. The clamping mechanism is arranged on the supporting seat and comprises a plurality of clamping parts for clamping workpieces from the outer side; the supporting mechanism comprises a fixed seat which is fixedly arranged on the clamping mechanism and is positioned between the clamping parts; the first moving part is movably arranged in the fixed seat; the second moving part movably abuts against the first moving part through an inclined plane; the bearing plate is arranged at the end, away from the first moving part, of the second moving part. Compared with the prior art, the supporting mechanism is arranged, so that the workpiece to be clamped is effectively supported, and the problem of local collapse of the workpiece to be clamped when the workpiece to be clamped is clamped can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping devices, and particularly relates to a local support structure for preventing the collapse of a fixture. Background Art

[0002] In many fields such as industrial production, machining, and parts assembly, the fixture, as a key tool for fixing and positioning workpieces, its performance directly affects production efficiency, machining accuracy, and product quality. Currently, there is a prominent problem in the clamping operation of workpieces by fixtures on the market: due to the lack of an effective support mechanism, local areas of the workpiece to be clamped are extremely prone to collapse during the clamping process.

[0003] In actual production scenarios, the shapes, sizes, and materials of workpieces vary. For some large, thin-walled, or irregularly shaped workpieces, when clamping, the clamping force of the fixture often concentrates on specific parts of the workpiece. However, the existing fixtures lack corresponding support structures to disperse and balance these clamping forces, resulting in excessive pressure on certain local areas of the workpiece under the action of the clamping force, thus causing local collapse. This local collapse not only destroys the original shape and dimensional accuracy of the workpiece, affects subsequent machining and assembly processes, but also may lead to workpiece scrapping, wasting raw materials and production time, and increasing the production cost of enterprises.

[0004] In addition, local collapse may trigger a series of chain reactions. For example, during the machining process, due to local deformation of the workpiece, the relative position between the cutting tool and the workpiece changes, which will lead to an increase in machining errors and affect the machining quality of the product; in the assembly process, local collapse of the workpiece may cause poor fit with other components, resulting in problems such as looseness and air leakage, reducing the overall performance and reliability of the product. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a local support structure for preventing the collapse of a fixture in view of the current situation of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problem is to propose a local support structure for preventing the collapse of a fixture, including: a support base;

[0007] a clamping mechanism, which is arranged on the support base and includes a plurality of clamping parts for clamping the workpiece from the outside;

[0008] a support mechanism, which includes: a fixed seat, which is fixedly arranged on the clamping mechanism and located between the clamping parts; a first moving part, which is movably arranged in the fixed seat; a second moving part, which is in movable abutment with the first moving part through an inclined surface; a supporting plate, which is arranged at one end of the second moving part away from the first moving part; wherein,

[0009] When the workpiece is clamped by the clamping mechanism, the horizontal movement of the first moving part pushes the second moving part to move in the vertical direction, so that the supporting plate extends into the workpiece and provides support for the inner wall of the workpiece.

[0010] In the above-mentioned local support structure for preventing the collapse of the fixture, the contact end faces of the first moving part and the second moving part are complementary wedge-shaped inclined plane structures, so that the horizontal movement of the first moving part is converted into the vertical movement of the second moving part.

[0011] In the above-mentioned local support structure for preventing the collapse of the fixture, the support mechanism further includes a mounting plate and a cylinder connected to the mounting plate. The mounting plate is connected to the support seat, and the output end of the cylinder is connected to the first moving part through a ejector rod for driving the sliding of the first moving part.

[0012] In the above-mentioned local support structure for preventing the collapse of the fixture, the fixed seat has a hollow cube structure, one end of which is provided with an opening for the second moving part to pass through, and the side wall is provided with a through hole for the ejector rod to pass through.

[0013] In the above-mentioned local support structure for preventing the collapse of the fixture, a limiting groove is provided on the inner wall of the fixed seat. Guide wheels are installed on both sides of the second moving part through bearing rods, and the guide wheels are in rolling cooperation with the limiting groove to restrict the movement track of the second moving part.

[0014] In the above-mentioned local support structure for preventing the collapse of the fixture, at least part of the end of the supporting plate away from the second moving part is a flexible supporting part, and the outer shape of the flexible supporting part is adapted to the inner wall structure of the workpiece.

[0015] In the above-mentioned local support structure for preventing the collapse of the fixture, the flexible supporting part is made of polyurethane material.

[0016] In the above-mentioned local support structure for preventing the collapse of the fixture, a control mechanism is further included, and the control mechanism includes:

[0017] A mounting seat, which is arranged on the machine shell and corresponds to the position of the clamping mechanism;

[0018] A ventilation plate and pipelines, and the pipelines connect the ventilation plate with each clamping part of the clamping mechanism;

[0019] An oil cylinder, which is arranged on the mounting seat;

[0020] A compression rod, which is driven by the oil cylinder and slides in the inner channel of the mounting seat;

[0021] When the oil cylinder is started, the compression rod compresses the air in the channel, and synchronously transmits the air pressure to each clamping part through the pipeline to drive it to clamp the workpiece synchronously.

[0022] In the above-mentioned local support structure for preventing the collapse of a fixture, a channel for air circulation is provided inside the mounting base, and the sliding stroke of the compression rod matches the compression volume of the channel.

[0023] In the above-mentioned local support structure for preventing the collapse of a fixture, the ventilation plate integrates multiple shunt interfaces and is respectively connected to each clamping part through independent pipes for evenly distributing the air pressure of each shunt.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] (1) By providing a support mechanism, effective support for the workpiece to be clamped is realized, and the problem that the workpiece to be clamped will have local collapse when being clamped can be avoided.

[0026] (2) The contact end faces of the first moving part and the second moving part are complementary wedge-shaped inclined plane structures, so that the horizontal movement of the first moving part can be accurately converted into the vertical movement of the second moving part. This structural design not only improves the force transmission efficiency, but also ensures the smoothness and accuracy of the movement, further enhancing the stability and reliability of the internal support for the workpiece.

[0027] (3) The fixed seat has a hollow cube structure, with an opening at one end for the second moving part to pass through and through holes on the side wall for the ejector rod to pass through. Such a design not only ensures the compactness of the structure, but also facilitates the assembly and maintenance between components. At the same time, it is also beneficial to improve the working stability of the entire device and ensure the smooth movement of the second moving part without obstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional view of a local support structure for preventing the collapse of a fixture according to the utility model.

[0029] Figure 2 is Figure 1 the plan view in the direction of A in

[0030] Figure 3 is Figure 1 the plan view in the direction of B in

[0031] Figure 4 is a three-dimensional view when the partial structures of the clamping mechanism and the support mechanism are installed.

[0032] Figure 5 is Figure 4 the partial enlarged view at C in

[0033] Figure 6 is Figure 4 the cross-sectional view of

[0034] In the figure, 100 is a support base; 200 is a clamping mechanism; 210 is a first clamping part; 220 is a second clamping part; 230 is a third clamping part; 240 is a bearing rod; 250 is a guide wheel; 300 is a support mechanism; 310 is a fixed base; 311 is an opening; 312 is a through hole; 320 is a first moving part; 330 is a second moving part; 340 is a supporting plate; 350 is a flexible supporting part; 360 is a mounting plate; 370 is a cylinder; 400 is a control mechanism; 410 is a mounting seat; 420 is a ventilation plate; 430 is a pipeline; 440 is an oil cylinder; 450 is a compression rod; 500 is a workpiece. Detailed implementation manners

[0035] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0037] As Figures 1 to 6 shown, a local support structure for preventing collapse of a fixture of the present invention includes: a support base 100, a clamping mechanism 200, a support mechanism 300, and a control mechanism 400.

[0038] Specifically, the support base 100 is configured as the main structure of the fixture and is used to provide support for the remaining mechanisms; the clamping mechanism 200 is arranged on the support base 100 and includes a plurality of clamping parts for clamping the workpiece 500 from the outside; the support mechanism 300 includes: a fixed base 310, which is fixedly arranged on the clamping mechanism 200 and located between the clamping parts; a first moving part 320, which is movably arranged in the fixed base 310; a second moving part 330, which is in movable abutment with the first moving part 320 through an inclined surface; a supporting plate 340, which is arranged at one end of the second moving part 330 away from the first moving part 320; wherein, when the workpiece 500 is clamped by the clamping mechanism 200, the horizontal movement of the first moving part 320 pushes the second moving part 330 to move in the vertical direction, so that the supporting plate 340 extends into the workpiece 500 and provides support for the inner wall of the workpiece 500.

[0039] In one embodiment, the clamping mechanism 200 includes three parts: a first clamping portion 210, a second clamping portion 220, and a third clamping portion 230. Among them, the first clamping portion 210 is disposed opposite to the position where the supporting plate 340 extends into the workpiece 500, and the second clamping portion 220 and the third clamping portion 230 form an outward V-shaped structure. These three clamping portions act together to apply pressure to the surface of the workpiece 500, thereby firmly fixing the workpiece 500 on the support base 100. When clamping the workpiece 500 is required, first use a lifting tool or a robotic arm (preferably a robotic arm) to transport the workpiece 500 to be clamped to the top of the clamping mechanism 200. During the clamping process of the clamping mechanism 200 on the workpiece 500 to be clamped, first, the first moving portion 320 moves and contacts the second moving portion 330. After contact, the first moving portion 320 can drive the second moving portion 330 to slide upward relative to the fixed base 310. As the second moving portion 330 rises, it drives the supporting plate 340 to move upward synchronously until the supporting plate 340 contacts the bottom of the workpiece 500 to be clamped, which can effectively avoid the possible local collapse problem of the workpiece 500 to be clamped during the clamping process.

[0040] It should be noted that the contact end faces of the first moving portion 320 and the second moving portion 330 are complementary wedge-shaped inclined plane structures, converting the horizontal movement of the first moving portion 320 into the vertical movement of the second moving portion 330.

[0041] This structural design not only improves the force transmission efficiency but also ensures the smoothness and accuracy of the movement, further enhancing the stability and reliability of the internal support of the workpiece 500.

[0042] Furthermore, the support mechanism 300 further includes a mounting plate 360 and a cylinder 370 connected to the mounting plate 360. The mounting plate 360 is connected to the support base 100, and the output end of the cylinder 370 is connected to the first moving portion 320 through a push rod for driving the sliding of the first moving portion 320.

[0043] During operation, the cylinder 370 applies a thrust to the first moving portion 320 through the push rod, causing the first moving portion 320 to move along a predetermined trajectory. Using the cylinder 370 as a power source, rapid and precise adjustment can be achieved to meet the requirements of workpieces 500 with different sizes and shapes, improving the versatility and operation convenience of the equipment.

[0044] Preferably, the fixed base 310 has a hollow cube structure, with an opening 311 provided at one end for the second moving portion 330 to pass through, and a through hole 312 provided on the side wall for the push rod to pass through.

[0045] Such a design not only ensures the compactness of the structure, but also facilitates the assembly and maintenance between components. At the same time, it is also beneficial to improve the working stability of the entire device and ensure the smooth movement of the second moving part 330 without obstruction.

[0046] Furthermore, a limiting groove is provided on the inner wall of the fixed seat 310. Guide wheels 250 are installed on both sides of the second moving part 330 through bearing rods 240, and the guide wheels 250 are in rolling fit with the limiting groove to restrict the movement track of the second moving part 330.

[0047] In order to reduce the friction between the second moving part 330 and the fixed seat 310, when the second moving part 330 rises, the guide wheels 250 can be brought into contact with the limiting groove, so that during the rising or falling process of the second moving part 330, the guide wheels 250 are driven to rotate along the bearing rods 240 and move stably up and down along the limiting groove, improving the lifting stability of the second moving part 330.

[0048] At least a part of the end of the supporting plate 340 away from the second moving part 330 is a flexible supporting part 350, and the outer shape of the flexible supporting part 350 is adapted to the inner wall structure of the workpiece 500.

[0049] The application of flexible materials can reduce the damage to the surface of the workpiece 500 while ensuring sufficient supporting force, especially suitable for processing high-precision or fragile workpieces 500, and improving the product quality.

[0050] Preferably, the flexible supporting part 350 is made of polyurethane material.

[0051] Polyurethane material has good wear resistance, elasticity and compressive properties. It can not only provide the necessary supporting force, but also adapt to the inner walls of workpieces 500 with different shapes, ensuring the flexibility and durability of the support.

[0052] The control mechanism 400 includes: a mounting seat 410, which is arranged on the machine shell and corresponds to the clamping mechanism 200 in position; a ventilation plate 420 and a pipeline 430, and the pipeline 430 connects the ventilation plate 420 with each clamping part of the clamping mechanism 200; an oil cylinder 440, which is arranged on the mounting seat 410; a compression rod 450, which is driven by the oil cylinder 440 and slides in the internal channel of the mounting seat 410; when the oil cylinder 440 is started, the compression rod 450 compresses the air in the channel, and synchronously transmits the air pressure to each clamping part through the pipeline 430 to drive it to clamp the workpiece 500 synchronously.

[0053] The control mechanism 400 is configured to be the power source of the clamping mechanism 200. The connection between the oil cylinder 440 and the compression rod 450 can be achieved by setting a rotary chuck on the oil cylinder 440, connecting one end of the chuck to the output end of the oil cylinder 440, and the other end to the compression rod 450. When the oil cylinder 440 starts, it can drive the compression rod 450 to slide downward in the channel opened inside the mounting base 410. In this state, the air in the channel is compressed, and the compressed air is transported to the ventilation plate 420 through the pipeline 430. Finally, the ventilation plate 420 transports the air to the first clamping portion 210, the second clamping portion 220, and the third clamping portion 230 respectively through independent pipelines 430, so as to realize the multi-point synchronous clamping of the workpiece 500 to be clamped.

[0054] Furthermore, a channel for air circulation is provided inside the mounting base 410, and the sliding stroke of the compression rod 450 matches the compression volume of the channel. This design optimizes the air flow path, ensures the effective transmission of gas pressure, improves the response speed and control accuracy of the system, and helps to achieve more precise clamping actions.

[0055] Preferably, the ventilation plate 420 integrates multiple shunt interfaces, which are respectively connected to each clamping portion through independent pipelines 430 for equal distribution of the air pressure in each branch.

[0056] This design ensures the pressure consistency and independent controllability of each clamping point, is beneficial to improving the overall clamping effect, and is particularly suitable for the precision machining of workpieces 500 with complex shapes.

[0057] It should be noted that in the present utility model, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. Terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0059] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar ways for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A clamp anti-collapse local support structure, characterized in that: include: Support seat; A clamping mechanism, which is arranged on the support seat and includes a plurality of clamping parts for clamping the workpiece from the outside; The support mechanism comprises: a fixed seat, which is fixed on the clamping mechanism and located between the clamping parts; a first movable part, which is movably arranged in the fixed seat; a second movable part, which is movably abutted against the first movable part through an inclined surface; and a supporting plate, which is arranged at one end of the second movable part away from the first movable part; wherein, When the workpiece is clamped by the clamping mechanism, the horizontal movement of the first moving part pushes the second moving part to move in the vertical direction, so that the supporting plate extends into the interior of the workpiece and provides support for the inner wall of the workpiece.

2. A clamp anti-collapse local support structure as claimed in claim 1, characterized in that: The contact end surfaces of the first moving part and the second moving part are complementary wedge-shaped inclined surface structures, so that the horizontal movement of the first moving part is converted into the vertical movement of the second moving part.

3. A clamp anti-collapse local support structure as claimed in claim 1, characterized in that: The support mechanism also includes a mounting plate and a cylinder connected to the mounting plate, the mounting plate is connected to the support seat, and the output end of the cylinder is connected to the first moving part through an ejector rod for driving the sliding of the first moving part.

4. A clamp anti-collapse local support structure as claimed in claim 3, characterized in that: The fixing seat is in a hollow cubic structure, one end of which is provided with an opening for the second moving part to pass through, and a side wall is provided with a through hole for the ejection rod to pass through.

5. A clamp anti-collapse local support structure as claimed in claim 1, characterized in that: A limiting groove is provided on the inner wall of the fixing seat, and guide wheels are installed on both sides of the second movable part through bearing rods. The guide wheels and the limiting groove are rollingly matched to constrain the movement trajectory of the second movable part.

6. A clamp anti-collapse local support structure as claimed in claim 1, characterized in that: At least a portion of one end of the supporting plate away from the second moving portion is a flexible supporting portion, and the shape of the flexible supporting portion is adapted to the inner wall structure of the workpiece.

7. A clamp anti-collapse local support structure as claimed in claim 6, characterized in that: The flexible supporting part is made of polyurethane material.

8. A clamp anti-collapse local support structure as claimed in claim 1, characterized in that: Also included is a control mechanism, the control mechanism comprising: A mounting seat, arranged on the housing and corresponding to the position of the clamping mechanism; A vent plate and a pipe, wherein the pipe connects the vent plate and each clamping part of the clamping mechanism; The oil cylinder is arranged on the mounting base; a compression rod driven by the cylinder and sliding in the internal passage of the mounting seat; When the oil cylinder is started, the compression rod compresses the air in the channel and transmits the air pressure to each clamping part synchronously through the pipeline, driving them to clamp the workpiece synchronously.

9. A clamp anti-collapse local support structure as claimed in claim 8, characterized in that: A channel for air circulation is provided in the mounting seat, and the sliding stroke of the compression rod matches the compression volume of the channel.

10. A clamp anti-collapse local support structure as claimed in claim 8, characterized in that: The ventilation plate integrates a multi-channel flow distribution interface, which is connected to each clamping part through independent pipelines to provide balanced distribution of air pressure in each channel.

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