Pull-down clamping jig

Abstract

The utility model relates to a pull-down clamping jig which comprises a supporting assembly, a material carrying assembly, a positioning jig and a clamping assembly. The supporting assemblies are symmetrically arranged below the material carrying assembly. The positioning jig array is arranged at the top of the material loading assembly; the clamping assemblies are arranged between the adjacent supporting assemblies in an array mode, and the output ends of the clamping assemblies penetrate through the overload material assembly and the positioning jig. According to the utility model, bad products caused by loosening of the products are effectively avoided, the yield of the products is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a pull-down clamping fixture. Background Art

[0002] During the parts processing, it is usually necessary to clamp the product before processing. In the existing clamping process, for more regular square products, the clamping fixture usually sets positioning blocks on two adjacent sides of the product's acupoints, and sets sliders that can move horizontally on the other two sides. The sliders are usually regular rectangular or cubes that fit on the carrier plate. When clamping, first put the two sides of the product against the positioning blocks, and then control the slider to move horizontally toward the product to achieve the purpose of locking. However, the slider in this clamping device is movable, and it is easy to loosen during product processing and move in the opposite direction of the product clamping direction, resulting in insufficient tightening force. Summary of the invention

[0003] The purpose of the utility model is to provide a pull-down clamping fixture with reasonable structural design and convenient and quick operation, and to solve the above technical problems.

[0004] To realize the above technical solution, the technical solution of the utility model is as follows: a pull-down clamping fixture, comprising a supporting assembly, a loading assembly, a positioning fixture and a clamping assembly; the supporting assembly is symmetrically arranged below the loading assembly; the positioning fixture array is arranged on the top of the loading assembly; the clamping assembly array is arranged between adjacent supporting assemblies, and the output end passes through the loading assembly and the positioning fixture.

[0005] Furthermore, a magnetic seat is embedded in the support assembly.

[0006] Furthermore, an array of T-shaped through holes is provided on the material carrier component; the thickness of the material carrier component is at least 5 mm; and a positioning pin is provided on the material carrier component protruding outward.

[0007] Furthermore, the upper array of the positioning fixture is provided with an inwardly concave placement groove; a wear-resistant layer with a thickness of 0.2 μm is sprayed on the inner side of the placement groove; the upper array of the positioning fixture is provided with negative pressure suction holes; and the placement groove is provided with a through hole that runs through the entire positioning fixture.

[0008] Furthermore, the clamping assembly includes a tensioning cylinder fixed and locked on the loading assembly by a fastener; a T-shaped pull rod is screwed to the output end of the tensioning cylinder; and a pressure plate is detachably placed on the T-shaped pull rod.

[0009] Furthermore, the pressing plate is a long strip of plate with a thickness of 5 mm; an array of pressing shoulders protruding outward is arranged on the pressing plate; and a U-shaped groove is inclinedly arranged on the pressing plate.

[0010] Compared with the prior art, the utility model has the following beneficial effects: when clamping a product, after placing the product in the placement slot, the four sides of the product are in contact with the placement slot surface, the tensioning cylinder is driven, the piston rod of the tensioning cylinder contracts, and the connected T-shaped pull rod is driven to move downward, and the pressure plate is pulled downward to clamp the product and complete the product clamping. Since the product is fixed in the placement slot, and the T-shaped pull rod is used to act on the pressure plate and then transfer the clamping to the product, the movement of the slider that may occur during the processing is avoided, and the clamping force of the device is improved; the clamping force of the device is improved to avoid product defects caused by loose products, improve product yield, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the pull-down clamping fixture of the utility model. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0014] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Please see attached Figure 1As shown: a pull-down clamping fixture, including a support component 1, a material carrier component 2, a positioning fixture 3 and a clamping component 4; the support component 1 is symmetrically arranged below the material carrier component 2, used to support the entire material carrier component 2 to set it up in a space, and the two support components 1 are arranged oppositely and connected to the bottom of the material carrier component 2. As a result, the overall structure of the pull-down clamping fixture is more stable and firm; the positioning fixture 3 is arranged in an array on the top of the material carrier component 2, used to position the workpiece to be processed and support and fix it; the clamping component 4 is arranged in an array between adjacent support components 1, and the output end passes through the material carrier component 2 and the positioning fixture 3, used to press one side of the workpiece to be processed, so that it is firmly fixed on the positioning fixture 3 for convenient processing. As a result, when clamping the product, after the product is placed in the positioning fixture 3, the four surfaces of the product are attached to the positioning fixture 3, and then the clamping component 4 moves to shrink vertically downward, driving the pressing plate 43 on the clamping component 4 to contact one side of the product to clamp the product, completing the product clamping. In addition, the array arrangement can complete the entire clamping process at one time, and at least the positioning fixture 3 can enable the clamping assembly 4 to complete the clamping of 9 products at one time, thereby improving the processing efficiency.

[0016] Based on the above embodiment, a magnetic seat is embedded on the support component 1, so that it can be quickly docked and installed on the corresponding machine tool for processing. It is easy to disassemble and assemble, and has low maintenance cost. In addition, in order to effectively reduce the weight of the equipment; an array of weight-reducing holes is provided on the support component 1 to improve usability.

[0017] Based on the above embodiment, an array of T-shaped through holes 21 is provided on the carrier component 2, and the thickness of the carrier component 2 is at least 35 mm to ensure sufficient supporting force to support processing without deformation and improve processing accuracy; a positioning pin is provided on the carrier component 2 protruding outward.

[0018] On the basis of the above-mentioned embodiment, the array on the positioning jig 3 is provided with an inwardly concave placement groove 31. When in use, the product is placed on the placement groove 31. In this way, under the action of the clamping assembly 44, the product and the placement groove 31 on the positioning jig 3 are better fitted, thereby avoiding defects caused by product displacement during processing; a wear-resistant layer with a thickness of 0.2 μm is sprayed on the inner side of the placement groove 31; the array on the positioning jig 3 is provided with negative pressure suction holes; the placement groove 31 is provided with a through hole that runs through the entire positioning jig 3.

[0019] Based on the above embodiment, the clamping assembly 4 includes a tensioning cylinder 41 fixedly locked on the carrier assembly 2 by a fastener; the output end of the tensioning cylinder 41 is screwed with a T-shaped pull rod 42; and a pressure plate 43 is detachably placed on the T-shaped pull rod 42. The tensioning cylinder 41 can be controlled by a solenoid valve. Therefore, the solenoid valve control program can be directly written into the CNC program, so that the cylinder can be automatically turned on and off, reducing manual operation steps, improving production efficiency, and reducing production costs.

[0020] Based on the above embodiment, the pressing plate 43 is a long strip of plate with a thickness of 5 mm; an array of pressing shoulders protruding outward are arranged on the pressing plate 43; and a U-shaped groove is inclinedly arranged on the pressing plate 43.

[0021] The utility model is used as follows: when clamping a product, after placing the product in the placement groove 31, the four sides of the product are in contact with the surface of the placement groove 31, and the tensioning cylinder 41 is driven. The piston rod of the tensioning cylinder 41 contracts, driving the connected T-shaped pull rod 42 to move downward, and the pressing plate 43 is pulled downward to clamp the product and complete the product clamping. Since the product is fixed in the placement groove 31, and the T-shaped pull rod 42 is used to act on the pressing plate 43 and then transfer the clamping to the product, the movement of the slider that may occur during the processing is avoided, and the clamping force of the device is improved; the clamping force of the device is improved to avoid product defects caused by loose products, improve product yield, and reduce production costs.

[0022] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not used to limit the present invention. Any person skilled in the art should be able to use the technical content disclosed above to make equivalent embodiments that are equivalent changes by slight changes or modifications without departing from the scope of the technical solution of the present invention. However, any brief modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A pull-down clamping fixture, comprising a support component (1), a material carrier component (2), a positioning fixture (3) and a clamping component (4); the support component (1) is symmetrically arranged below the material carrier component (2); characterized in that: The positioning jig (3) is arranged in an array on the top of the material loading component (2); the clamping component (4) is arranged in an array between adjacent support components (1), and the output end passes through the material loading component (2) and the positioning jig (3); The material carrier component (2) is provided with an array of T-shaped through holes (21); the material carrier component (2) has a thickness of at least 35 mm; and a positioning pin is provided on the material carrier component (2) protruding outwards; The positioning jig (3) is provided with an array of inwardly concave placement grooves (31); a wear-resistant layer with a thickness of 0.2 μm is sprayed on the inner side of the placement groove (31); the positioning jig (3) is provided with an array of negative pressure suction holes; the placement groove (31) is provided with a through hole that runs through the entire positioning jig (3); The clamping assembly (4) comprises a tensioning cylinder (41) fixedly locked on the material carrying assembly (2) by means of a fastener; a T-shaped pull rod (42) is screwed onto the output end of the tensioning cylinder (41); and a pressure plate (43) is detachably placed on the T-shaped pull rod (42).

2. The pull-down clamping fixture according to claim 1, characterized in that: The support assembly (1) is embedded with a magnetic seat (11).

3. The pull-down clamping fixture according to claim 1, characterized in that: The pressing plate (43) is a long strip-shaped object with a thickness of 5 mm; an array of pressing shoulders protruding outwards are arranged on the pressing plate (43); and a U-shaped slot is obliquely arranged on the pressing plate (43).

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