Clamp for PI heating film test and test device

Abstract

The utility model discloses a fixture and a testing device for testing a PI heating film. The fixture and the testing device comprise a top plate, at least two vertical support frames for supporting the top plate, a first testing plate, a bottom plate, at least two cylinders, rollers and guide rails, the bottom plate is used for placing a PI heating film to be tested, and the first test plate is used for pressing the PI heating film to be tested with the bottom plate; the bottom of a cylinder barrel of each air cylinder is fixed on the top plate; the first test plate is placed between the top plate and the bottom plate; the movable end of a piston rod of each cylinder is fixed on the first test plate and is used for lifting the first test plate and driving the first test plate to move up and down; the side face, facing the vertical supporting frame, of the first testing plate is in rolling connection with the vertical supporting frame through a rolling wheel guide rail, the rolling wheel is fixed to the first testing plate, the guide rail is vertically fixed to the vertical supporting frame, and the rolling wheel makes rolling contact with the guide rail and rolls along the guide rail. The strength of the support is improved, and extrusion force borne by the support is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of PI heating film detection, in particular to a clamp and a testing device for PI heating film testing. Background Art

[0002] PI heating film is made of polyimide film as the outer insulator and metal foil or wire as the inner conductive heating element, heat-sealed at high temperature and high pressure. Polyimide film heating film has excellent insulation strength, excellent electrical strength, excellent thermal conductivity, and excellent resistance stability, making it widely applicable in heating applications and capable of achieving very high temperature control accuracy.

[0003] To ensure that the performance of PI heating film products meets customer requirements, testing is required, such as testing the product's insulation withstand voltage and resistance. For larger PI heating films, existing testing platforms use a large-surface test fixture. Multiple cylinders raise the large test plate to the loading position. Testers then place the PI heating film under test and lower it to the inspection workstation. However, due to the inconsistent rise of the multiple cylinders, the large test plate can be higher on one side than on the other, causing the end face of the test plate to collide and damage the fixing bracket. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a fixture and a testing device for PI heating film testing, which can improve the strength of the fixed bracket and reduce the squeezing force of the test plate on the fixed bracket, thereby protecting the fixed bracket.

[0005] In order to solve the above technical problems, the first aspect of the present invention discloses a fixture for testing PI heating films, comprising a top plate, at least two vertical support frames for supporting the top plate, a first test plate, a bottom plate, at least two cylinders, rollers, and guide rails; the bottom plate is used to place the PI heating film to be tested, and the first test plate is used to press the PI heating film to be tested against the bottom plate;

[0006] The bottom of the cylinder barrel of each of the cylinders is fixed to the top plate;

[0007] The first test plate is placed between the top plate and the bottom plate; the movable end of the piston rod of each cylinder is fixed to the first test plate, so as to lift the first test plate and move it up and down;

[0008] The side of the first test board facing the vertical support frame is rollingly connected to the vertical support frame via a roller guide rail, wherein the roller is fixed on the first test board, the guide rail is vertically fixed on the vertical support frame, and the roller is in rolling contact with the guide rail and rolls along the guide rail.

[0009] As an optional embodiment, it further includes a second test plate and at least four first long hole plates;

[0010] The second test plate is placed between the bottom plate and the first test plate, and the second test plate is rollingly connected to the vertical support frame; at least two opposite sides of the four side surfaces of the first test plate are provided with two first positioning members symmetrically distributed left and right, and each first positioning member slides in a long hole of the first long hole plate;

[0011] The bottom of each of the first long hole plates is fixed on the second testing plate;

[0012] The second test plate is used to press a PI heating film to be tested together with the bottom plate, and to press another PI heating film to be tested together with the bottom plate.

[0013] As another optional embodiment, it further includes a third test plate and at least four second long hole plates;

[0014] The third test plate is placed between the bottom plate and the second test plate, and the third test plate is rollingly connected to the vertical support frame; at least two opposite sides of the four side surfaces of the second test plate are provided with two second positioning members that are symmetrically distributed left and right, and each second positioning member slides in a long hole of the second long hole plate;

[0015] The bottom of each of the second long hole plates is fixed on the third test plate;

[0016] The third test plate is used to press a PI heating film to be tested together with the second test plate, and to press another PI heating film to be tested together with the bottom plate.

[0017] As another optional embodiment, the guide rail has a groove, and the roller rolls on the bottom surface of the groove.

[0018] As another optional embodiment, the guide rail is a rack, and the serrated surface thereof is the contact surface with the roller; the roller is a gear that matches the serrated surface of the guide rail.

[0019] As another optional embodiment, the first test plate has a size of 1 to 1.5 m in length and 0.01 to 0.5 m in width.

[0020] As another optional embodiment, the first positioning member and the second positioning member are screws, bolts, positioning pins or protrusions.

[0021] The second aspect of the present invention discloses a testing device for testing PI heating films, comprising the fixture as described in the first aspect of the present invention, and also comprising a testing instrument and a control electrical box.

[0022] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0023] The embodiment of the utility model sets a roller guide rail to make the side of the test plate rollingly connected to the bracket. On the one hand, the strength of the bracket can be improved by installing the guide rail. On the other hand, when the multiple cylinders rise inconsistently, resulting in one side of the test plate being higher than the other side, due to the rolling connection between the side and the bracket, the force of the side on the bracket can be partially converted into a sliding friction force along the direction of the guide rail, which can reduce the extrusion force of the test plate on the bracket. At the same time, since the test plate rolls relative to the bracket, the extrusion force of the test plate on the bracket will not be concentrated in one place, further protecting the bracket. The guide rail has a guiding function, and setting a roller guide rail can improve the stability of the test plate movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a structural schematic diagram of a testing device for PI heating film testing disclosed in an embodiment of the present utility model;

[0026] Figure 2 This is a structural schematic diagram of a fixture for testing PI heating films disclosed in an embodiment of the present utility model. DETAILED DESCRIPTION

[0027] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] Example 1

[0029] See also Figures 1-2 The present invention discloses a fixture for testing PI heating films, comprising a top plate 1, at least two vertical support frames 2 for supporting the top plate 1, a first test plate 4, a bottom plate 3, at least two cylinders 5, rollers 6, and guide rails (not shown in the drawings); the bottom plate 3 is used to place the PI heating film to be tested, and the first test plate 4 is used to press the PI heating film to be tested against the bottom plate 3;

[0030] The bottom of the cylinder barrel of each of the cylinders 5 is fixed on the top plate 1;

[0031] The first test plate 4 is placed between the top plate 1 and the bottom plate 3; the movable end of the piston rod of each of the cylinders 5 is fixed on the first test plate 4, and is used to lift the first test plate 4 and move it up and down;

[0032] The side of the first test plate 4 facing the vertical support frame 2 is rollingly connected to the vertical support frame 2 via a roller 6 guide rail, wherein the roller 6 is fixed on the first test plate 4, the guide rail is vertically fixed on the vertical support frame 2, and the roller 6 is in rolling contact with the guide rail and rolls along the guide rail.

[0033] During operation, the cylinder 5 lifts the first test plate 4 to facilitate placing the PI heating film to be tested on the bottom plate 3, and then the cylinder 5 lowers the first test plate 4 to press the PI heating film to be tested, and the test can begin.

[0034] In response to the problem of the existing test fixture with multiple cylinders 5, which causes the table to bump against or the fixed bracket to be damaged due to the inconsistent rising of the multiple cylinders 5, the utility model sets a roller 6 guide rail to make the side of the test plate rollingly connected to the bracket. On the one hand, the strength of the bracket can be improved by installing the guide rail. On the other hand, when the multiple cylinders 5 rise inconsistently, resulting in one side of the test plate being higher than the other side, due to the rolling connection between the side and the bracket, the force of the side on the bracket can be partially converted into a sliding friction force along the guide rail direction, which can reduce the extrusion force of the test plate on the bracket. At the same time, since the test plate rolls relative to the bracket, the extrusion force of the test plate on the bracket will not be concentrated in one place, further protecting the bracket; the guide rail has a guiding function, and setting the roller 6 guide rail can improve the stability of the test plate movement.

[0035] In an optional embodiment, it further includes a second test plate 7 and at least four first long hole plates 8;

[0036] The second test plate 7 is placed between the bottom plate 3 and the first test plate 4, and the second test plate 7 is rollingly connected to the vertical support frame 2; two first positioning members 13 are symmetrically distributed on at least two opposite sides of the four side surfaces of the first test plate 4, and each first positioning member 13 slides in a long hole of the first long hole plate 8;

[0037] The bottom of each of the first long hole plates 8 is fixed on the second test plate 7;

[0038] The second test plate 7 is used to press a PI heating film to be tested together with the bottom plate 3 , and to press another PI heating film to be tested together with the bottom plate 3 .

[0039] In this embodiment, the second test board 7 is provided to form a two-layer structure, so that one more PI heating film can be tested, thereby improving the test efficiency and space utilization.

[0040] In another optional embodiment, it further includes a third test plate 9 and at least four second long hole plates 10;

[0041] The third test plate 9 is placed between the bottom plate 3 and the second test plate 7, and the third test plate 9 is rollingly connected to the vertical support frame 2; two second positioning members 14 are symmetrically distributed on at least two opposite sides of the four side surfaces of the second test plate 7, and each second positioning member 14 slides in a long hole of the second long hole plate 10;

[0042] The bottom of each of the second long hole plates 10 is fixed on the third test plate 9;

[0043] The third test plate 9 is used to press a PI heating film to be tested together with the second test plate 7 , and to press another PI heating film to be tested together with the bottom plate 3 .

[0044] This embodiment further provides a third test board 9 to form a three-layer structure, so that three PI heating films can be tested simultaneously, further improving the test efficiency and space utilization.

[0045] In yet another optional embodiment, the guide rail has a groove, and the roller 6 rolls on the bottom surface of the groove.

[0046] In another optional embodiment, the guide rail is a rack, and the serrated surface thereof is the contact surface with the roller 6; the roller 6 is a gear that matches the serrated surface of the guide rail.

[0047] In another optional embodiment, the first test plate 4 has a length of 1 to 1.5 m and a width of 0.01 to 0.5 m, which further saves workshop space compared to the existing fixture with a width of about 1.3 m.

[0048] In yet another optional embodiment, the first positioning member 13 and the second positioning member 14 are screws, bolts, positioning pins or protrusions.

[0049] Example 2

[0050] See also Figures 1-2 The embodiment of the present utility model discloses a testing device for testing PI heating film, including the fixture as described in the first embodiment, and also including a testing instrument 11 and a control electrical box 12.

[0051] The contents disclosed in the embodiments of the present invention only disclose preferred embodiments of the present invention, which are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fixture for testing PI heating film, characterized in that: The tester comprises a top plate, at least two vertical support frames for supporting the top plate, a first test plate, a bottom plate, at least two cylinders, rollers and guide rails; the bottom plate is used to place the PI heating film to be tested, and the first test plate is used to press the PI heating film to be tested against the bottom plate; The bottom of the cylinder barrel of each of the cylinders is fixed to the top plate; The first test plate is placed between the top plate and the bottom plate; the movable end of the piston rod of each cylinder is fixed to the first test plate, so as to lift the first test plate and move it up and down; The side of the first test board facing the vertical support frame is rollingly connected to the vertical support frame via a roller guide rail, wherein the roller is fixed on the first test board, the guide rail is vertically fixed on the vertical support frame, and the roller is in rolling contact with the guide rail and rolls along the guide rail.

2. The clamp according to claim 1, characterized in that Also includes a second test plate and at least four first long hole plates; The second test plate is placed between the bottom plate and the first test plate, and the second test plate is rollingly connected to the vertical support frame; at least two opposite sides of the four side surfaces of the first test plate are provided with two first positioning members symmetrically distributed left and right, and each first positioning member slides in a long hole of the first long hole plate; The bottom of each of the first long hole plates is fixed on the second testing plate; The second test plate is used to press a PI heating film to be tested together with the bottom plate, and to press another PI heating film to be tested together with the bottom plate.

3. The clamp according to claim 2, characterized in that Also includes a third test plate and at least four second long hole plates; The third test plate is placed between the bottom plate and the second test plate, and the third test plate is rollingly connected to the vertical support frame; at least two opposite sides of the four side surfaces of the second test plate are provided with two second positioning members that are symmetrically distributed left and right, and each second positioning member slides in a long hole of the second long hole plate; The bottom of each of the second long hole plates is fixed on the third test plate; The third test plate is used to press a PI heating film to be tested together with the second test plate, and to press another PI heating film to be tested together with the bottom plate.

4. The clamp according to claim 1, wherein: The guide rail has a groove, and the roller rolls on the bottom surface of the groove.

5. The clamp according to claim 1, wherein: The guide rail is a rack, and the serrated surface thereof is the contact surface with the roller; the roller is a gear matched with the serrated surface of the guide rail.

6. The clamp according to claim 1, wherein: The first test plate has a length of 1 to 1.5 m and a width of 0.01 to 0.5 m.

7. The clamp according to claim 3, characterized in that The first positioning member and the second positioning member are screws, bolts, positioning pins or protrusions.

8. A testing device for PI heating film testing, characterized in that: The invention comprises the fixture according to any one of claims 1 to 7, and further comprises a testing instrument and a control electrical box.

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