Self-positioning clamping device

Abstract

The utility model relates to the technical field of self-positioning clamping, and discloses a self-positioning clamping device which comprises a base, a limiting frame is fixedly installed on the surface of the base, sliding grooves are formed in the two sides of the surface of the limiting frame, a limiting rod is fixedly installed between the sliding grooves, and a clamping assembly is slidably connected to the surface of the limiting rod. Supporting rods are arranged at the four corners of the surface of the limiting frame, a containing plate is fixedly installed at the tops of the supporting rods, and a limiting plate is fixedly installed in the middle of the surface of the containing plate. According to the self-positioning clamping device, through the arrangement of a limiting frame, a limiting rod and a clamping assembly, in the using process, a worker starts an electric push rod, then the electric push rod moves a clamping block to the middle through a connecting plate, and during moving, a sliding block slides on the surface of the limiting rod; and the effect that workers can conveniently and automatically clamp the workpieces is achieved, the workpieces of different sizes can be clamped, and only the clamping blocks need to be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of self-positioning clamping, in particular to a self-positioning clamping device. Background Art

[0002] At present, CNC machine tools, machining centers, flexible manufacturing units, flexible manufacturing systems and flexible manufacturing lines have been widely used in the manufacturing industry of industrialized countries. Traditional lathes, drilling machines, milling machines, grinders and planers have been replaced and eliminated. The application of CNC machine tools, machining centers, FMC and FMS in China is also becoming increasingly widespread. However, when purchasing the above equipment, people often only pay attention to the performance, machining accuracy, machining range, tool magazine capacity, etc. of the equipment, and pay less attention to what kind of fixture to use.

[0003] However, the existing self-positioning clamping device has the following disadvantages:

[0004] The existing fixtures are single in setting and difficult to automatically position and clamp. As a result, different sizes of workpieces need to be clamped with different fixtures. This is not only costly but also time-consuming and troublesome to replace, affecting overall production efficiency. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a self-positioning clamping device with high practicality, simple operation and relatively simple structure. It solves the problem raised in the above background technology that the existing clamp is set up in a single manner and is difficult to automatically position and clamp, resulting in the need to replace different clamps for clamping workpieces of different sizes. This is not only costly to use, but also time-consuming and troublesome to replace, affecting the overall production efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a self-positioning clamping device, including a base, a limit frame fixedly installed on the surface of the base, sliding grooves are provided on both sides of the surface of the limit frame, a limit rod is fixedly installed between the sliding grooves, the surface of the limit rod is slidably connected with a clamping assembly, support rods are provided at the four corners of the surface of the limit frame, a placing plate is fixedly installed on the top of the support rod, a limiting plate is fixedly installed in the middle of the surface of the placing plate, and a positioning assembly is fixedly installed in the middle of the surface of the limiting plate.

[0007] Optionally, the clamping assembly includes a sliding block slidably connected to the surface of the limit rod, the surface of the sliding block is provided with a snap-in groove, the inside of the snap-in groove is provided with a clamping block, both sides of the sliding block are provided with rotating rods, the surface of the rotating rod is sleeved with a connecting plate, one side of the surface of the connecting plate is provided with a sliding groove, the inside of the sliding groove is slidably connected to a control block, and the bottom of the control block is fixedly installed with an electric push rod.

[0008] Optionally, a mounting plate is fixedly mounted on the bottom of the electric push rod, and a surface of the mounting plate is provided with limiting grooves equidistantly arranged in a circular array, and a positioning bolt is passed through the internal thread of the limiting groove.

[0009] Optionally, there are two sliding blocks, and the connecting plates on both sides of the sliding blocks are arranged in relative positions.

[0010] Optionally, the positioning assembly includes a support column fixedly mounted in the middle of the limiting plate surface, damping rods are fixedly mounted on both sides of the support column surface, a spring is sleeved on the surface of the damping rod, and a conical block is fixedly mounted on one end of the damping rod.

[0011] Optionally, a through slot is provided inside the limiting frame, and the size of the through slot is adapted to the size of the electric push rod.

[0012] The utility model provides a self-positioning clamping device, which has the following beneficial effects:

[0013] 1. This self-positioning clamping device is equipped with a limit frame, a limit rod and a clamping assembly. During use, the operator starts the electric push rod, and then the electric push rod moves the clamping block to the middle through the connecting plate. During the movement, the sliding block slides on the surface of the limit rod, which makes it convenient for the operator to automatically clamp the workpiece. It can clamp workpieces of different sizes by simply replacing the clamping block.

[0014] 2. The self-positioning clamping device is provided with a limiting plate and a positioning assembly. During use, the operator presses the workpiece downward through the positioning assembly. When pressing, the inner wall of the workpiece squeezes the positioning assembly, and the spring on the positioning assembly rebounds to position the workpiece through the inner wall of the workpiece, which makes it convenient for operators to position workpieces with different inner diameters and reduces the occurrence of workpiece offset during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the clamping assembly of the utility model;

[0018] Figure 4 This is a schematic diagram of the positioning component structure of the utility model;

[0019] Figure 5 For this utility model Figure 1 A is an enlarged diagram of the structure.

[0020] In the figure: 1. Base; 2. Limit frame; 3. Limit rod; 4. Clamping assembly; 401. Sliding block; 402. Clamping block; 403. Rotating rod; 404. Connecting plate; 405. Control block; 406. Electric push rod; 5. Support rod; 6. Placement plate; 7. Limiting plate; 8. Positioning assembly; 801. Support column; 802. Damping rod; 803. Spring; 804. Conical block. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 5 The utility model provides a technical solution: a self-positioning clamping device, comprising a base 1, a limit frame 2 is fixedly installed on the surface of the base 1, and both sides of the surface of the limit frame 2 are provided with sliding grooves, and a limit rod 3 is fixedly installed between the sliding grooves;

[0023] By setting the limiting rod 3 , the sliding block 401 can be limited, and when the sliding block 401 slides on the surface of the limiting rod 3 , the moving direction of the sliding block 401 can be controlled.

[0024] The surface of the limiting rod 3 is slidably connected to a clamping assembly 4, and support rods 5 are provided at the four corners of the surface of the limiting frame 2;

[0025] The provision of the support rod 5 makes it easier for personnel to install the placement plate 6 , reduces the number of steps required for personnel to install the placement plate 6 , and improves work efficiency.

[0026] A placement plate 6 is fixedly mounted on the top of the support rod 5, a limiting plate 7 is fixedly mounted in the middle of the surface of the placement plate 6, and a positioning assembly 8 is fixedly mounted in the middle of the surface of the limiting plate 7. A through slot is opened inside the limit frame 2, and the size of the through slot is adapted to the size of the electric push rod 406;

[0027] The provision of the through slot makes it easier for personnel to install the electric push rod 406 and to move the electric push rod 406 up and down, thereby reducing the resistance of the electric push rod 406 when moving up and down. Example 1:

[0028] The clamping assembly 4 includes a sliding block 401 slidably connected to the surface of the limit rod 3, and a card slot is provided on the surface of the sliding block 401, and a clamping block 402 is clamped inside the card slot. Rotating rods 403 are provided on both sides of the sliding block 401, and a connecting plate 404 is sleeved on the surface of the rotating rod 403. A sliding groove is provided on one side of the surface of the connecting plate 404, and a control block 405 is slidably connected to the inside of the sliding groove. An electric push rod 406 is fixedly installed on the bottom of the control block 405. There are two sliding blocks 401. The connecting plates 404 on both sides of the sliding block 401 are arranged in relative positions. The connecting plates 404 slide in the sliding grooves provided on both sides of the surface of the limit frame 2. Sliding grooves are provided on both sides of the surface of the connecting plate 404, and the size of the sliding groove is adapted to the size of the rotating rod 403.

[0029] During use, the personnel will start the electric push rod 406, and then the electric push rod 406 will push the control block 405. When the control block 405 is pushed, the control block 405 will move the connecting plate 404 through the rotating rods 403 on both sides. When the connecting plate 404 moves, the sliding block 401 will be moved toward the middle through the rotating rod 403. When the sliding block 401 moves, it will drive the clamping block 402 to move toward the middle. The movement of the clamping block 402 toward the middle will clamp the workpiece on the placement plate 6, thereby clamping workpieces of different sizes. Example 2:

[0030] The positioning assembly 8 includes a support column 801 fixedly mounted in the middle of the surface of the limiting plate 7. Damping rods 802 are fixedly mounted on both sides of the surface of the support column 801. A spring 803 is sleeved on the surface of the damping rod 802. A conical block 804 is fixedly mounted on one end of the damping rod 802.

[0031] During use, personnel place the workpiece in the middle of the placement plate 6, and then squeeze the workpiece downward. The inner wall of the workpiece will squeeze the conical block 804. When the conical block 804 is squeezed, it will drive the damping rod 802 and the spring 803 to be squeezed. When the damping rod 802 and the spring 803 rebound, the conical block 804 will be driven outward through the support column 801 to be expanded. When expanded, the conical block 804 will limit the workpiece and position it, which makes it convenient for personnel to position workpieces of different sizes.

[0032] In the present invention, the working steps of the device are as follows:

[0033] Step 1: First, a person places the workpiece in the middle of the placement plate 6 and then presses the workpiece downward. The inner wall of the workpiece will press the conical block 804. When the conical block 804 is pressed, it will drive the damping rod 802 and the spring 803 to press. When the damping rod 802 and the spring 803 rebound, the support column 801 will drive the conical block 804 to open outward. When the workpiece is opened, the conical block 804 will limit the workpiece and position it.

[0034] The second step: After the positioning is completed, the personnel will start the electric push rod 406, and then the electric push rod 406 will push the control block 405. When the control block 405 is pushed, the control block 405 will move the connecting plate 404 through the rotating rods 403 on both sides. When the connecting plate 404 moves, the sliding block 401 will be moved toward the middle through the rotating rod 403. When the sliding block 401 moves, it will drive the clamping block 402 to move toward the middle. The movement of the clamping block 402 toward the middle will clamp the workpiece on the placement plate 6.

[0035] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art can clearly understand the details of its power mechanism, power supply system, and control system on the premise that they understand the principle of the above-mentioned utility model. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be implemented by simple programming by those skilled in the art.

[0036] The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0037] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-positioning clamping device, comprising a base (1), characterized in that: A limit frame (2) is fixedly mounted on the surface of the base (1), and slide grooves are provided on both sides of the surface of the limit frame (2). A limit rod (3) is fixedly mounted between the slide grooves, and a clamping assembly (4) is slidably connected to the surface of the limit rod (3). Support rods (5) are provided at the four corners of the surface of the limit frame (2), and a placement plate (6) is fixedly mounted on the top of the support rod (5). A limit plate (7) is fixedly mounted in the middle of the surface of the placement plate (6), and a positioning assembly (8) is fixedly mounted in the middle of the surface of the limit plate (7).

2. A self-positioning clamping device according to claim 1, characterized in that: The clamping assembly (4) includes a sliding block (401) slidably connected to the surface of the limit rod (3), the surface of the sliding block (401) is provided with a clamping groove, the interior of the clamping groove is clamped with a clamping block (402), both sides of the sliding block (401) are provided with a rotating rod (403), the surface of the rotating rod (403) is sleeved with a connecting plate (404), one side of the surface of the connecting plate (404) is provided with a sliding groove, the interior of the sliding groove is slidably connected to a control block (405), and the bottom of the control block (405) is fixedly installed with an electric push rod (406).

3. A self-positioning clamping device according to claim 2, characterized in that: A mounting plate is fixedly mounted on the bottom of the electric push rod (406), and the surface of the mounting plate is provided with limiting grooves equidistantly arranged in a circular array, and the internal threads of the limiting grooves are penetrated by positioning bolts.

4. The self-positioning clamping device according to claim 2, characterized in that: There are two sliding blocks (401), and the connecting plates (404) on both sides of the sliding blocks (401) are arranged in relative positions.

5. The self-positioning clamping device according to claim 1, characterized in that: The positioning assembly (8) comprises a support column (801) fixedly mounted in the middle of the surface of the limiting plate (7), damping rods (802) fixedly mounted on both sides of the surface of the support column (801), a spring (803) sleeved on the surface of the damping rod (802), and a conical block (804) fixedly mounted on one end of the damping rod (802).

6. The self-positioning clamping device according to claim 1, characterized in that: A through slot is provided inside the limiting frame (2), and the size of the through slot is adapted to the size of the electric push rod (406).

7. The self-positioning clamping device according to claim 4, characterized in that: The connecting plate (404) slides in the sliding grooves provided on both sides of the surface of the limiting frame (2). Both sides of the surface of the connecting plate (404) are provided with sliding grooves, and the size of the sliding grooves is adapted to the size of the rotating rod (403).

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