Automatic blanking device for plastic framework handle PU filter element

Abstract

The utility model discloses an automatic blanking device for a plastic framework handle PU filter element, which comprises a workbench, the workbench is connected with a stamping frame through a stand column, an air cylinder is arranged on the stamping frame, and an extension rod of the air cylinder faces the right lower part; a mould used for fixing a square framework of the filter element is arranged on the workbench under the air cylinder, and the lower end of an extension rod of the air cylinder is connected with a rectangular blade matched with an inner ring of the square framework. The rectangular blade is driven by the air cylinder to punch downwards, indentations are punched on a PU knocking-over ring along an inner ring of a square frame framework at a time, the indentation punching efficiency is greatly improved compared with the indentation punching efficiency which is obtained by manually using the blade, 1500 pieces of edge are averagely trimmed in a single shift before improvement, 1980 pieces of edge are averagely trimmed in a single shift after improvement, the single-shift yield is improved by 480 pieces, namely 32%, and the production efficiency is greatly improved. And the production efficiency is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of filter element production, and in particular to the trimming technology of PU filter elements. Background Technology

[0002] Some filter cartridges have PU rubber rings attached to the square frame. During production, the PU rubber rings may not be regularly shaped and may have burrs. It is necessary to remove the irregular parts of the PU rubber rings.

[0003] Traditional filter cartridge trimming involves a dedicated operator who first uses a scalpel to make incisions on the filter cartridge frame, then manually peels off excess PU adhesive along these incisions (i.e., manually removing the PU burrs from the frame). Since the filter cartridge's square frame has a perimeter, manually making incisions along the inner circumference of the PU adhesive ring is inconvenient. Completing the full circumference requires multiple operations, resulting in low efficiency; on average, only 1500 cartridges can be trimmed per shift, which is time-consuming and labor-intensive. This low trimming efficiency, unable to keep up with production line efficiency, causes production bottlenecks. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic punching device for PU filter elements with plastic frame handles. The device creates indentations on the PU release ring along the inner ring of the filter element's square frame in one punching process, which is highly efficient and makes it convenient for workers to tear off the PU glue flash along the indentations.

[0005] To achieve the above objectives, the present invention provides an automatic punching device for a plastic frame handle PU filter element, comprising a worktable, a punching frame connected to the worktable via a column, a cylinder mounted on the punching frame, the cylinder's extension rod pointing directly downwards; a fixture for fixing the square frame of the filter element is mounted on the worktable directly below the cylinder, and a rectangular blade adapted to the inner ring of the square frame is connected to the lower end of the cylinder's extension rod.

[0006] The fixture includes a rectangular base with a rectangular protrusion that protrudes upwards. The protrusion matches the inner ring of the filter element's square frame. The base outside the protrusion supports the filter element's square frame.

[0007] The rectangular blade is connected upward to the rectangular base plate, and the rectangular base plate is connected upward to the extension rod of the cylinder.

[0008] This utility model has the following advantages:

[0009] This invention, with its fixed fixture and cylinder, eliminates the need for precise alignment. Simply placing the filter element's square frame onto the fixture ensures that the rectangular blade aligns with the PU rubber ring on the inner ring of the square frame.

[0010] This invention uses a cylinder to drive a rectangular blade to press downwards, creating an indentation on the PU strip along the inner ring of the square frame in one pass. The pressing efficiency is high. Before the improvement, the average trimming per shift was 1,500 pieces, and after the improvement, the average trimming per shift was 1,980 pieces, increasing the output per shift by 480 pieces (32%), resulting in a significant increase in production efficiency.

[0011] Previously, manually making scratches with a scalpel blade inevitably resulted in inaccurate scratch placement (leading to inaccurate PU adhesive removal when tearing off burrs beyond the scratch), scratches on the filter element frame, and inconsistent scratch depth (making it difficult to remove some burrs beyond the scratch). This invention eliminates these problems: the scratches are precise, preventing damage to the filter element frame, and the scratch depth is consistent, making it easy to tear off burrs along the scratches.

[0012] The specific structure of the fixture makes it easy to fit the square frame of the filter element onto the protrusion and support it on the base, which facilitates the subsequent stamping operation after the square frame is positioned.

[0013] The rectangular substrate is used to control the downward pressing position of the rectangular blade. When the rectangular substrate presses on the protrusion on the base, the rectangular blade will no longer press downward, thus avoiding excessive pressing that could damage the blade. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0017] Figure 4 This is a three-dimensional structural diagram of the stamping frame and related structures in this utility model. Detailed Implementation

[0018] like Figures 1 to 4 As shown, the automatic punching device for a plastic frame handle PU filter element of this utility model includes a workbench 1. A punching frame 3 is connected to the workbench 1 via a column 2. A cylinder 4 is provided on the punching frame 3, and the extension rod of the cylinder 4 faces directly downward. A jig for fixing the square frame of the filter element is provided on the workbench 1 directly below the cylinder 4. A rectangular blade 5 that is adapted to the inner ring of the square frame is connected to the lower end of the extension rod of the cylinder 4.

[0019] This invention, with its fixed fixture and cylinder 4, eliminates the need for precise alignment. Simply placing the filter element's square frame onto the fixture ensures that the rectangular blade 5 aligns with the PU rubber ring at the inner edge of the square frame.

[0020] This invention uses a cylinder 4 to drive a rectangular blade 5 to press downwards, creating an indentation on the PU strip along the inner ring of the square frame in one pass. The pressing efficiency is high. Before the improvement, the average trimming per shift was 1,500 pieces, and after the improvement, the average trimming per shift was 1,980 pieces, increasing the output per shift by 480 pieces (32%), resulting in a significant increase in production efficiency.

[0021] Previously, manually making scratches with a scalpel blade inevitably resulted in inaccurate scratch placement (leading to inaccurate PU adhesive removal when tearing off burrs beyond the scratch), scratches on the filter element frame, and inconsistent scratch depth (making it difficult to remove some burrs beyond the scratch). This invention eliminates these problems: the scratches are precise, preventing damage to the filter element frame, and the scratch depth is consistent, making it easy to tear off burrs along the scratches.

[0022] The fixture includes a rectangular base 6 with a rectangular protrusion 7 extending upwards. The protrusion 7 matches the inner ring of the filter element's square frame. The base 6 outside the protrusion 7 supports the filter element's square frame. The fixture's specific structure facilitates fitting the filter element's square frame onto the protrusion 7 and supporting it on the base 6, making it easy to position the frame before subsequent stamping operations.

[0023] The rectangular blade 5 is connected upward to the rectangular base plate 8, and the rectangular base plate 8 is connected upward to the extension rod of the cylinder. The rectangular base plate 8 is used to control the downward pressing position of the rectangular blade 5. When the rectangular base plate 8 presses on the protrusion 7 on the base 6, the rectangular blade 5 will no longer press downward, avoiding excessive pressing and damage to the blade.

[0024] In operation, the worker places the filter element to be processed on workbench 1, and fits the square frame of the filter element onto the rectangular protrusion 7. The base 6 supports the square frame. The cylinder 4 is operated; its extension rod drives the rectangular blade 5 downwards, fitting onto the rectangular protrusion 7 and continuing to press towards the base 6. During this process, indentations are pressed into the PU rubber ring along the inner circumference of the square frame. After pressing, the extension rod of cylinder 4 retracts the rectangular blade 5 upwards. The worker then removes the square frame and manually tears off the excess PU rubber ring along the indentations, significantly improving the efficiency of removing PU rubber ring burrs from the filter element.

[0025] The above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the utility model without departing from the spirit and scope of the utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic punching device for PU filter cartridges with plastic frame handles, comprising a workbench, characterized in that: A stamping frame is connected to the workbench via a column. A cylinder is installed on the stamping frame, with the cylinder's extension rod pointing directly downwards. A fixture for fixing a square frame for the filter element is installed on the workbench directly below the cylinder. A rectangular blade that matches the inner ring of the square frame is connected to the lower end of the cylinder's extension rod.

2. The automatic punching device for a plastic frame handle PU filter element according to claim 1, characterized in that: The fixture includes a rectangular base with a rectangular protrusion that protrudes upwards. The protrusion matches the inner ring of the filter element's square frame. The base outside the protrusion supports the filter element's square frame.

3. The automatic punching device for a plastic frame handle PU filter element according to claim 2, characterized in that: The rectangular blade is connected upward to the rectangular base plate, and the rectangular base plate is connected upward to the extension rod of the cylinder.

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