Friction test device for plastic products

Abstract

The utility model discloses a friction test device for plastic products, which comprises a testing machine, a movable rod is mounted on a swing rod of the testing machine in a longitudinal sliding manner, a friction block is mounted at the lower end of the movable rod, and in a test state, the swing rod drives the movable rod to swing on the plastic products in a reciprocating manner. The movable rod is installed on the swing rod of the testing machine in a longitudinal sliding mode, the friction block is installed at the lower end of the movable rod, when a plastic product with a curved surface is tested, the swing rod drives the movable rod to swing in a reciprocating mode, meanwhile, the movable rod freely slides up and down, and therefore a friction test can be conducted in a self-adaptive curved surface structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to plastic product test equipment technical field especially relates to a friction test device for plastic product. BACKGROUND

[0002] The plastic products produced by our company include plastic bottle caps and plastic shells and the like, and the customers have requirements on the wear resistance and scratch resistance of the plastic products during production, and also have requirements on the wear resistance of the text or patterns of some plastic products printed with text or patterns.

[0003] For the planar plastic products, the existing ink decoloring testing machine can be used for testing, but for the plastic products with curved surfaces, the existing structure cannot be used for testing. In view of this problem, the technical personnel of our company have improved the existing ink decoloring testing machine. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of friction test devices for plastic product, and the movable rod of longitudinal sliding is installed on the swing lever of testing machine, and the friction block is installed in movable rod lower end, when the plastic product with curved surface is tested, swing lever drives movable rod reciprocating swing, simultaneously movable rod freely slides up and down, to be able to self-adapting curved surface structure and carry out friction test.

[0005] To achieve the above object, the utility model provides a kind of friction test device for plastic product, including testing machine, the movable rod of longitudinal sliding is installed on the swing lever of testing machine, and the friction block is installed in movable rod lower end, in test state, swing lever drives movable rod reciprocating swing on plastic product.

[0006] Swing block is installed on the swing lever, and movable rod is longitudinally through swing block, and movable rod is slidably connected with swing block.

[0007] Linear bearing is installed on the swing block, and movable rod is inserted into linear bearing.

[0008] Linear bearing is respectively installed with snap spring on the upper and lower sides of swing block.

[0009] Long hole is provided on the swing lever, and screw is inserted into long hole and is fixed with swing block thread cooperation connection.

[0010] Blind hole is provided on the lower end of movable rod, and friction block is inserted into blind hole, and the lower end of friction block extends a distance from movable rod.

[0011] Positioning screw is screwed on movable rod at blind hole.

[0012] The positioning mold is used for placing the plastic product to be tested on the positioning mold.

[0013] The positioning mold comprises a block body, and a placing groove is arranged on the top of the block body.

[0014] The block body is provided with an extended boss on each side.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] 1. The utility model discloses a friction testing device for plastic product, which comprises a test machine, a swing rod is arranged on the test machine, and a block body is arranged on the swing rod.

[0017] 2. The utility model also comprises a positioning mold, and the positioning mold is used for being fixedly installed on the workbench of the test machine. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced.

[0019] Figure 1 It is a whole structure schematic diagram of the utility model.

[0020] Figure 2 It is a sectional structure schematic diagram of the utility model swing block and movable rod connection.

[0021] Figure 3 It is a top view structure schematic diagram of one kind of positioning mold of the utility model.

[0022] Figure 4 It is Figure 3 A-A sectional structure schematic diagram in the utility model.

[0023] Figure 5 It is Figure 3 The state diagram of the positioning mold in the utility model when testing.

[0024] Figure 6 It is a top view structure schematic diagram of another kind of positioning mold of the utility model.

[0025] Figure 7 It is Figure 6 B-B sectional structure schematic diagram in the utility model.

[0026] Figure 8 It is Figure 6The diagram shows the state of the positioning mold during the test.

[0027] Figure label:

[0028] Testing machine 10, swing rod 20, elongated hole 21;

[0029] 30, 31, 32;

[0030] Movable rod 40, friction block 41, positioning screw 42;

[0031] Positioning mold 50, block 51, placement groove 52, boss 53;

[0032] Bottle cap 60, shell 70. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0034] Example 1:

[0035] Please see Figure 1 , 2 A friction testing device for plastic products includes a testing machine 10. A movable rod 40 is longitudinally slidably mounted on a swing rod 20 of the testing machine 10. A friction block 41 is mounted on the lower end of the movable rod 40. In the test state, the swing rod 20 drives the movable rod 40 to swing back and forth on the plastic product.

[0036] By installing a movable rod 40 that slides longitudinally on the swing rod 20 of the testing machine 10, and installing a friction block 41 at the lower end of the movable rod 40, when testing plastic products with curved surfaces, the swing rod 20 drives the movable rod 40 to swing back and forth, while the movable rod 40 slides freely up and down, thereby enabling friction testing that adapts to the curved surface structure.

[0037] See Figure 5 The experiment is shown with a bottle cap 60 having a curved surface. See also... Figure 8 The experiment on the shell 70 with curved surfaces is shown.

[0038] During the test, the plastic product to be tested can be adhered to the worktable 11 of the testing machine 10.

[0039] In this embodiment, the testing machine 10 adopts an existing ink decolorization testing machine.

[0040] Further, in order to improve the stability of the installation of the movable rod 40, the swing block 30 is installed on the swing rod 20, and the movable rod 40 longitudinally penetrates the swing block 30, and the movable rod 40 and the swing block 30 are connected in sliding fit.

[0041] Further, the linear bearing 31 is installed on the swing block 30, and the movable rod 40 penetrates the linear bearing 31. The swing block 30 is automatically slid up and down and rotated more flexibly.

[0042] Further, the linear bearing 31 is installed with the snap spring 32 on both sides of the swing block 30, which is convenient for limiting the linear bearing 31. When the snap spring 32 is not installed, the linear bearing 31 needs to be fixed with the swing block 30 in interference fit. When the snap spring 32 is used, the linear bearing 31 and the swing block 30 can be used in clearance fit, which is also convenient for replacing the linear bearing 31.

[0043] Participate Figure 1 , the swing rod 20 is provided with a long hole 21, and the screw penetrates the long hole 21 and is threadedly connected and fixed with the swing block 30. It is convenient to adjust the installation position of the swing block 30.

[0044] See Figure 2 , the lower end of the movable rod 40 is provided with a blind hole, and the friction block 41 is inserted into the blind hole, and the lower end of the friction block 41 extends out of the movable rod 40 by a distance. By providing the blind hole, it is convenient to install the friction block 41. In use, the friction block is inserted into the blind hole.

[0045] The friction block 41 can be a plastic block or a silica gel block, and the friction block 41 is a cylindrical structure.

[0046] Further, the positioning screw 42 is screwed on the movable rod 40 at the blind hole. The positioning screw 42 abuts against the friction block 41 to prevent the friction block 41 from falling off.

[0047] Embodiment 2:

[0048] On the basis of embodiment 1, see Figure 1 , 3 -8, further comprising a positioning mold 50, the positioning mold 50 is used for being installed and fixed to the workbench 11 of the testing machine 10, and the positioning mold 50 is used for placing the plastic product to be tested.

[0049] See Figures 3-8 , the positioning mold 50 comprises a block body 51, and the top of the block body 51 is provided with a placing groove 52 for placing the plastic product to be tested. The plastic product to be tested includes a bottle cap 60 and a shell 70.

[0050] See Figure 3 , 4, 5, the placement groove 52 is provided with a plurality of, and for the placement groove 52 is blind hole structure, for placing the bottle cap 60.

[0051] Referring to Figure 6 、 7 , 8, the placement groove 52 is a groove structure, for placing the shell 70.

[0052] The structure of the placement groove 52 can be adaptively changed according to the shape of the plastic product to be tested.

[0053] Further, in order to facilitate the positioning mold 50 to be installed on the workbench 11, the block 51 is provided with protruding bosses 53 on both sides. In this way, the positioning mold 50 can be installed on the workbench 11 by pressing plate. Specifically, as disclosed in CN221765172U, when in use, the pressing plates on both sides are pressed on the positions of the bosses 53 on both sides.

[0054] The working principle or action process of the utility model is as follows:

[0055] Referring to Figure 1 、 8 , in use, the positioning mold 50 is fixedly installed on the workbench 11 of the testing machine 10, the shell 70 is placed into the placement groove 52 of the positioning mold 50, and the movable rod 40 is placed on the shell 70. The testing machine 10 is started, the swing rod 20 of the testing machine 10 reciprocates left and right, thereby driving the movable rod 40 to reciprocate, and the movable rod 40 freely slides up and down, thereby being able to adaptively perform friction test on the curved surface structure.

Claims

1. A friction testing apparatus for plastic products, comprising a testing machine (10), characterized in that: The testing machine (10) has a movable rod (40) that slides longitudinally on the swing rod (20). A friction block (41) is installed at the lower end of the movable rod (40). Under test conditions, the swing rod (20) drives the movable rod (40) to swing back and forth on the plastic product.

2. The friction testing device for plastic products according to claim 1, characterized in that: A swing block (30) is installed on the swing rod (20), and the movable rod (40) passes longitudinally through the swing block (30). The movable rod (40) and the swing block (30) are slidably connected.

3. The friction testing device for plastic products according to claim 2, characterized in that: A linear bearing (31) is installed on the swing block (30), and the movable rod (40) passes through the linear bearing (31).

4. The friction testing device for plastic products according to claim 3, characterized in that: The linear bearing (31) has snap rings (32) installed on the upper and lower sides of the swing block (30).

5. A friction testing device for plastic products according to claim 2, characterized in that: The swing rod (20) is provided with an elongated hole (21), and the screw is inserted into the elongated hole (21) and then threadedly connected and fixed to the swing block (30).

6. A friction testing device for plastic products according to any one of claims 1-5, characterized in that: The lower end of the movable rod (40) is provided with a blind hole, and the friction block (41) is inserted into the blind hole. The lower end of the friction block (41) extends a distance beyond the movable rod (40).

7. A friction testing device for plastic products according to claim 6, characterized in that: A positioning screw (42) is screwed onto the movable rod (40) at the blind hole.

8. The friction testing device for plastic products according to claim 1, characterized in that: It also includes a positioning mold (50), which is used to install and fix it onto the worktable (11) of the testing machine (10), and the plastic product to be tested is placed on the positioning mold (50).

9. A friction testing device for plastic products according to claim 8, characterized in that: The positioning mold (50) includes a block (51), and a placement groove (52) is provided on the top of the block (51).

10. A friction testing device for plastic products according to claim 9, characterized in that: The block (51) has protruding bosses (53) on both sides.

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