Fixture for processing bottom shell of LED (light-emitting diode) screen

Abstract

The utility model discloses a fixture for processing a bottom shell of an LED (light-emitting diode) screen, which comprises a bottom frame, a positioning pin, a supporting mechanism and a fixing mechanism, and the bottom frame is used for being fixed on CNC (computerized numerical control) equipment; the positioning pin is used for being inserted into a positioning hole of the bottom shell to position the bottom shell; the multiple supporting mechanisms are used for supporting the bottom wall of the bottom shell, each supporting mechanism comprises a mounting shell fixed to the bottom frame, a supporting pin connected with the mounting shell in an up-down sliding mode, a first spring driving the supporting pin to ascend and a first air cylinder located on one side of the mounting shell, and the supporting pins are used for supporting the bottom shell; the first air cylinder is used for abutting against the side wall of the supporting pin to fix the supporting height of the supporting pin. The fixing mechanism is used for downwards pulling a pull pin on the bottom wall of the bottom shell to fix the bottom shell. According to the clamp for machining the bottom shell of the LED screen, the supporting height can be automatically adjusted according to the height of a workpiece supporting position, so that a shell with large blank deformation is not prone to shaking when clamped on the clamp.

Description

Technical Field

[0001] The utility model relates to the technical field of processing fixtures, in particular to a fixture used for processing a bottom shell of an LED screen. Background Art

[0002] The bottom shell of the LED screen includes a bottom wall and four side walls. There is an inner cavity between the bottom wall and the four side walls, and the inner cavity is provided with a plurality of screw thread bulges.

[0003] For the production of the bottom shell, it is usually first made into a blank through die casting, and then the blank is processed using CNC equipment, and the bulge in the inner cavity of the blank is milled and tapped.

[0004] Specifically, the four corners of the bottom wall of the bottom shell are provided with positioning holes and pull pins. When clamping the bottom shell, the bottom wall of the bottom shell is placed downward on the clamp, the clamp positions the positioning holes of the bottom shell, and then the pull pins are tightened downward to fix the bottom shell.

[0005] In the related art, the projection area of ​​the bottom shell is relatively large, and the deformation of the die-cast blank is large.

[0006] However, the existing fixture generally uses a fixed support member to support the workpiece, and has poor adaptability to the support height of the workpiece support position. The shell with a large deformation of the blank is prone to shaking when clamped on the existing fixture. Utility Model Content

[0007] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a fixture for processing the bottom shell of an LED screen, which can automatically adjust the support height according to the height of the support position of the workpiece, so that the shell with a large deformation of the blank is not easy to shake when clamped on the fixture.

[0008] According to the first aspect of the utility model, a clamp for processing the bottom shell of an LED screen comprises: a base frame for fixing on a CNC device; a positioning pin for inserting into the positioning hole of the bottom shell to position the bottom shell; a plurality of supporting mechanisms, wherein the plurality of supporting mechanisms are used to support the bottom wall of the bottom shell, the supporting mechanism comprising a mounting shell fixed on the base frame, a supporting pin connected to the mounting shell for sliding up and down, a first spring for driving the supporting pin to rise, and a first cylinder located on one side of the mounting shell, the supporting pin being used to support the bottom shell, the first cylinder being used to abut against the side wall of the supporting pin to fix the supporting height of the supporting pin; a fixing mechanism, a pull pin for pulling the bottom wall of the bottom shell downward to fix the bottom shell.

[0009] A fixture for processing the bottom shell of an LED screen according to an embodiment of the utility model has at least the following beneficial effects:

[0010] 1. The utility model provides a base frame, which is used to be fixed on the CNC equipment, thereby facilitating the fixture to be fixed on the CNC equipment.

[0011] 2. The utility model provides a positioning pin, which is used to be inserted into the positioning hole of the bottom shell to position the bottom shell, thereby making the clamping position of the bottom shell on the fixture more accurate.

[0012] 3. The utility model provides a plurality of supporting mechanisms, and the plurality of supporting mechanisms are used to support the bottom wall of the bottom shell, thereby increasing the supporting position of the clamp on the bottom shell, and further making the support of the clamp on the bottom shell more stable.

[0013] 4. The utility model makes the support mechanism include a mounting shell fixed on the base frame, a support pin connected to the mounting shell for sliding up and down, a first spring that drives the support pin to rise, and a first cylinder located on one side of the mounting shell, the support pin is used to support the bottom shell, and the first cylinder is used to abut against the side wall of the support pin to fix the support height of the support pin. It can be understood that when the bottom shell is placed on the fixture, the bottom shell presses the support pin downward to make the support pin descend and compress the first spring, so that the support pin can adjust the support height according to the height of the supporting position of the bottom shell, so that the support pin can adapt to supporting the bottom shell whose support position height fluctuates greatly due to the large deformation of the blank. In addition, when the bottom shell is placed in place on the fixture, the first cylinder presses the side wall of the support pin tightly, so that the support height of the support pin is fixed, thereby avoiding the bottom shell being squeezed by force to move the support pin downward when processing the bottom shell, and further, the shell with a large deformation of the blank is not easy to shake when clamped on the fixture.

[0014] 5. The utility model is provided with a fixing mechanism, which is used to pull the pull pin of the bottom wall of the bottom shell downward to fix the bottom shell, thereby facilitating the clamp to lock the bottom shell on the clamp to prevent the bottom shell from shaking upward and falling off.

[0015] According to some embodiments of the utility model, one side of the support pin has a first inclined surface, the normal of the first inclined surface is inclined downward, the first cylinder has a top seat, the top seat has a second inclined surface, the normal of the second inclined surface is inclined upward, and the first inclined surface and the second inclined surface abut against each other to limit the descent of the support pin.

[0016] According to some embodiments of the utility model, one side of the support pin has a limit groove, and the mounting shell is provided with a limit member, the limit groove accommodates the limit member to slide up and down, and the limit member abuts against the top wall and bottom wall of the limit groove to limit the support pin up and down.

[0017] According to some embodiments of the present invention, the limiting member is installed through the side wall of the installation shell.

[0018] According to some embodiments of the utility model, the cross section of the support pin is rectangular, the mounting shell has a first slide groove for accommodating the lifting and lowering of the support pin, the cross section of the first slide groove is rectangular, and the first slide groove limits the support pin.

[0019] According to some embodiments of the present invention, the bottom of the support pin has a mounting hole, the mounting hole accommodates the first spring, and the top end of the first spring abuts against the top wall of the mounting hole to support the support pin to rise.

[0020] According to some embodiments of the present invention, the mounting shell has a first slide groove for accommodating the lifting and lowering of the support pin, the first slide groove passes through the mounting shell up and down, and the bottom end of the first spring abuts against the base frame.

[0021] According to some embodiments of the utility model, a plastic cover is provided at the top end of the support pin, and the plastic cover is sleeved outside the top of the mounting shell.

[0022] According to some embodiments of the utility model, a plastic top is provided on the top of the plastic cover, and the plastic top is used to abut against the bottom shell. A latch is provided on the top of the plastic top, and the latch passes through the plastic cover and is inserted into the top of the support pin to be connected and fixed on the support pin.

[0023] According to some embodiments of the utility model, the top of the mounting shell has a cylindrical portion, the top end of the support pin passes through the top end of the cylindrical portion, the plastic cover is sleeved outside the cylindrical portion, and the cylindrical portion and the plastic cover cooperate to slide up and down.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic diagram of the structure of a fixture for processing the bottom shell of an LED screen according to an embodiment of the utility model;

[0027] Figure 2 for Figure 1 A top view is shown;

[0028] Figure 3 for Figure 2 AA cross-sectional view shown;

[0029] Figure 4 for Figure 3 An enlarged view of point B is shown;

[0030] Figure 5 for Figure 3 An enlarged view of point C is shown.

[0031] Figure markings: 100-base frame, 110-positioning pin, 120-support mechanism, 130-mounting shell, 140-support pin, 150-first spring, 160-first cylinder, 170-fixing mechanism, 180-first inclined plane, 190-top seat, 200-second inclined plane, 210-limiting groove, 220-limiting member, 230-first slide groove, 240-mounting hole, 250-plastic cover, 260-plastic head, 270-pin, 280-cylindrical part. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] A fixture for processing the bottom shell of an LED screen according to an embodiment of the utility model is described below in conjunction with the accompanying drawings.

[0037] Reference Figure 1 and Figure 2 A fixture for processing a bottom shell of an LED screen according to an embodiment of the utility model includes a base frame 100 , a positioning pin 110 , a supporting mechanism 120 and a fixing mechanism 170 .

[0038] As for the base frame 100 , the base frame 100 is used to be fixed on the CNC equipment, thereby facilitating the fixing of the fixture on the CNC equipment.

[0039] Specifically, the base frame 100 includes a base plate and a supporting foot plate arranged at the bottom of the base plate, the supporting foot plate is fixed on the CNC equipment, and the positioning pin 110, the supporting mechanism 120 and the fixing mechanism 170 are arranged on the base plate, so that there is space for arranging the fixture air pipe between the bottom surface of the base plate and the CNC equipment.

[0040] As for the positioning pin 110 , the positioning pin 110 is used to be inserted into the positioning hole of the bottom shell to position the bottom shell, thereby making the clamping position of the bottom shell on the fixture more accurate.

[0041] Furthermore, four positioning pins 110 are provided, and the four positioning pins 110 are respectively used to be inserted into four positioning holes of the bottom shell.

[0042] As for the supporting mechanism 120 , a plurality of supporting mechanisms 120 are provided, and the plurality of supporting mechanisms 120 are used to support the bottom wall of the bottom shell, thereby increasing the supporting position of the clamp on the bottom shell, and further making the support of the clamp on the bottom shell more stable.

[0043] Reference Figure 3 Specifically, the support mechanism 120 includes a mounting shell 130 fixed on the base frame 100, a support pin 140 slidably connected to the mounting shell 130 up and down, a first spring 150 that drives the support pin 140 to rise, and a first cylinder 160 located on one side of the mounting shell 130. The support pin 140 is used to support the bottom shell, and the first cylinder 160 is used to abut against the side wall of the support pin 140 to fix the support height of the support pin 140.

[0044] It can be understood that when the bottom shell is placed on the fixture, the bottom shell squeezes the support pin 140 downward so that the support pin 140 descends and compresses the first spring 150, thereby enabling the support pin 140 to adjust the support height according to the height of the support position of the bottom shell, so that the support pin 140 can adapt to supporting the bottom shell whose support position height fluctuates greatly due to the large deformation of the blank. In addition, when the bottom shell is placed in place on the fixture, the first cylinder 160 presses the side wall of the support pin 140 to fix the support height of the support pin 140, thereby avoiding the bottom shell being squeezed by force to move the support pin 140 downward when processing the bottom shell, and further, making it less likely for the shell with a large deformation of the blank to shake when clamped on the fixture.

[0045] Reference Figure 4 In some specific embodiments, one side of the support pin 140 has a first inclined surface 180, and the normal of the first inclined surface 180 is inclined downward. The first cylinder 160 has a top seat 190, and the top seat 190 has a second inclined surface 200, and the normal of the second inclined surface 200 is inclined upward. The first inclined surface 180 and the second inclined surface 200 abut against each other to limit the support pin 140 from descending.

[0046] It can be understood that when the first cylinder 160 drives the second inclined surface 200 of the top seat 190 to abut against the first inclined surface 180 of the support pin 140, the second inclined surface 200 can tilt and support the first inclined surface 180 upward. At the same time, the second inclined surface 200 can limit the descent of the support pin 140, thereby avoiding the situation where the downward pressure on the support pin 140 exceeds the friction between the first cylinder 160 and the support pin 140 when the first cylinder 160 presses the support pin 140, causing the support pin 140 to slide down, thereby making the supporting height position of the support pin 140 more stable.

[0047] In some specific embodiments, one side of the support pin 140 has a limit groove 210, and the mounting shell 130 is provided with a limit member 220. The limit groove 210 accommodates the limit member 220 to slide up and down, and the limit member 220 abuts against the top wall and the bottom wall of the limit groove 210 to limit the support pin 140 up and down. Therefore, the limit member 220 cooperates with the limit groove 210 to limit the height range of the support pin 140, thereby preventing the support pin 140 from being lifted or lowered too much and detaching from the mounting shell 130 or colliding with the bottom plate.

[0048] In some specific embodiments, the limiting member 220 is installed through the side wall of the installation shell 130 , so that the limiting member 220 can be installed from the outside of the installation shell 130 , thereby making the installation of the limiting member 220 easier.

[0049] In some specific embodiments, the cross-section of the support pin 140 is rectangular, and the mounting shell 130 has a first slide groove 230 for accommodating the lifting and lowering of the support pin 140. The cross-section of the first slide groove 230 is rectangular, and the first slide groove 230 limits the support pin 140, so that the support pin 140 and the first slide groove 230 cooperate to stop rotation, thereby preventing the support pin 140 from rotating in the first slide groove 230 and affecting the cooperation between the first cylinder 160 and the support pin 140.

[0050] In some specific embodiments, the bottom of the support pin 140 has a mounting hole 240, and the mounting hole 240 accommodates the first spring 150. The top end of the first spring 150 abuts against the top wall of the mounting hole 240 to support the support pin 140 to rise, so that the mounting hole 240 can limit the first spring 150, thereby making the installation of the first spring 150 more stable.

[0051] In some specific embodiments, the mounting shell 130 has a first slide groove 230 for accommodating the lifting and lowering of the support pin 140. The first slide groove 230 penetrates the mounting shell 130 up and down, and the bottom end of the first spring 150 abuts against the base frame 100, thereby facilitating the disassembly and assembly of the support pin 140 and the first spring 150 from the top or bottom end of the first slide groove 230.

[0052] Reference Figure 5 In some specific embodiments, a plastic cover 250 is provided at the top of the support pin 140, and the plastic cover 250 is mounted on the top of the mounting shell 130, so that the plastic cover 250 can shield the support pin 140 and the top of the mounting shell 130, preventing dust or processing debris from entering the gap between the support pin 140 and the mounting shell 130 and jamming the support pin 140.

[0053] In some specific embodiments, a plastic top head 260 is provided on the top of the plastic cover 250, and the plastic top head 260 is used to abut the bottom shell. A pin 270 is provided on the top of the plastic top head 260, and the pin 270 passes through the plastic cover 250 and is inserted into the top end of the support pin 140 to be connected and fixed on the support pin 140. Thus, the plastic top head 260 passes through the plastic cover 250 and is inserted into the top end of the support pin 140 to be connected and fixed on the support pin 140 through the pin 270, so that the plastic top head 260 can be disassembled, and then, it is convenient to replace plastic top heads 260 of different heights so that the support mechanism 120 can adapt to the positions of different heights of the supporting bottom shell. In addition, the abutment of the plastic top head 260 with the bottom shell can reduce the risk of scratching the bottom shell.

[0054] In some specific embodiments, the top of the mounting shell 130 has a cylindrical portion 280, the top of the support pin 140 passes through the top of the cylindrical portion 280, the plastic cover 250 is sleeved outside the cylindrical portion 280, and the cylindrical portion 280 and the plastic cover 250 cooperate to slide up and down, so that the cylindrical portion 280 can guide and limit the lifting and lowering of the plastic cover 250, thereby making the lifting and lowering of the plastic cover 250 smoother.

[0055] As for the fixing mechanism 170, the fixing mechanism 170 is used to pull the pull pin of the bottom wall of the bottom shell downward to fix the bottom shell, thereby facilitating the clamp to lock the bottom shell on the clamp to prevent the bottom shell from shaking upward and falling off.

[0056] Specifically, a pin cap is provided at the bottom end of the pull pin, and the fixing mechanism 170 includes a rocker arm and a second cylinder for driving the rocker arm to swing. A pull groove is provided at the free end of the rocker arm. The second cylinder drives the rocker arm to swing downward so that the pull groove is sleeved on the pull pin, and the rocker arm abuts against the pin cap to tighten the pull pin downward.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A fixture for processing the bottom shell of an LED screen, characterized in that: include: A base frame (100) is used for fixing on a CNC device; A positioning pin (110) is used to be inserted into the positioning hole of the bottom shell to position the bottom shell; A plurality of support mechanisms (120) are provided, wherein the plurality of support mechanisms (120) are used to support the bottom wall of the bottom shell, the support mechanism (120) comprising a mounting shell (130) fixed on the bottom frame (100), a support pin (140) connected to the mounting shell (130) in an up-and-down sliding manner, a first spring (150) driving the support pin (140) to rise, and a first cylinder (160) located on one side of the mounting shell (130), the support pin (140) being used to support the bottom shell, and the first cylinder (160) being used to abut against the side wall of the support pin (140) to fix the support height of the support pin (140); The fixing mechanism (170) is used for pulling the pull pin of the bottom wall of the bottom shell downwards to fix the bottom shell.

2. A fixture for processing the bottom shell of an LED screen according to claim 1, characterized in that: One side of the support pin (140) has a first inclined surface (180), and a normal line of the first inclined surface (180) is inclined downward; the first cylinder (160) has a top seat (190), and the top seat (190) has a second inclined surface (200), and a normal line of the second inclined surface (200) is inclined upward; the first inclined surface (180) and the second inclined surface (200) are in abutment with each other to limit the support pin (140) from descending.

3. A fixture for processing the bottom shell of an LED screen according to claim 1, characterized in that: One side of the support pin (140) is provided with a limiting groove (210), and the mounting shell (130) is provided with a limiting member (220), the limiting groove (210) accommodates the limiting member (220) to slide up and down, and the limiting member (220) abuts against the top wall and the bottom wall of the limiting groove (210) to limit the support pin (140) up and down.

4. A fixture for processing the bottom shell of an LED screen according to claim 3, characterized in that: The limiting member (220) is installed through the side wall of the installation shell (130).

5. The fixture for processing the bottom shell of an LED screen according to claim 1, characterized in that: The cross section of the support pin (140) is rectangular, and the mounting shell (130) has a first slide groove (230) for accommodating the lifting and lowering of the support pin (140). The cross section of the first slide groove (230) is rectangular, and the first slide groove (230) limits the support pin (140).

6. The fixture for processing the bottom shell of an LED screen according to claim 1, characterized in that: The bottom of the support pin (140) has a mounting hole (240), and the mounting hole (240) accommodates the first spring (150). The top end of the first spring (150) abuts against the top wall of the mounting hole (240) to support the support pin (140) to rise.

7. A fixture for processing the bottom shell of an LED screen according to claim 6, characterized in that: The mounting shell (130) has a first slide groove (230) for accommodating the lifting and lowering of the support pin (140); the first slide groove (230) passes through the mounting shell (130) from top to bottom; and the bottom end of the first spring (150) abuts against the bottom frame (100).

8. The fixture for processing the bottom shell of an LED screen according to claim 1, characterized in that: A plastic cover (250) is provided at the top end of the support pin (140), and the plastic cover (250) is sleeved outside the top of the installation shell (130).

9. A fixture for processing the bottom shell of an LED screen according to claim 8, characterized in that: A plastic top head (260) is arranged on the top of the plastic cover (250), and the plastic top head (260) is used to abut against the bottom shell. A latch (270) is arranged on the top of the plastic top head (260), and the latch (270) passes through the plastic cover (250) and is inserted into the top end of the support pin (140) to be connected and fixed to the support pin (140).

10. A fixture for processing the bottom shell of an LED screen according to claim 8, characterized in that: The top of the mounting shell (130) has a cylindrical portion (280), the top end of the support pin (140) passes through the top end of the cylindrical portion (280), the plastic cover (250) is sleeved outside the cylindrical portion (280), and the cylindrical portion (280) and the plastic cover (250) cooperate to slide up and down.

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