Tool for detecting tearing force of aluminum plastic cover

Abstract

The utility model provides an aluminum plastic cover tearing force detection tool, which comprises a first installation block and a second installation block, the first installation block and the second installation block are respectively fixed on two cross beams of a tensile machine, the first installation block is fixedly connected with a clamping assembly for clamping an aluminum cover part of an aluminum plastic cover, the second installation block is connected with a pusher dog through a connecting chain, and the pusher dog is connected with the tensile machine. The movable end of the pusher dog is provided with an arc-shaped notch. By adopting the mode that the clamping assembly is matched with the pusher dog, the efficiency and the precision of detecting the tearing force of the aluminum plastic cover are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum-plastic cover detection, in particular to an aluminum-plastic cover tearing force detection tool. Background Art

[0002] The aluminum-plastic cover comprises an aluminum cover and a plastic cover. The plastic cover and the aluminum cover are riveted together after heating. The plastic cover wraps the aluminum cover. The inner column of the plastic cover passes through the center hole of the aluminum cover and is pressurized and riveted by a riveting head to form an integrated aluminum-plastic cover.

[0003] After a batch of aluminum-plastic covers is produced, a certain number of aluminum-plastic covers need to be sampled for testing the tearing force of opening the covers, and it is determined whether the tearing force obtained by the test is within the designed tearing force range. If it is greater than the upper limit of the designed tearing force, the aluminum-plastic cover is difficult to open; if it is less than the lower limit of the designed tearing force, the plastic cover in the aluminum-plastic cover is very easy to separate from the aluminum cover.

[0004] The tear force test is based on a tensile testing machine, on which a three-jaw clamping fixture is installed. The two clamping fixtures clamp the plastic cover and the aluminum cover respectively. After clamping, one output end of the tensile testing machine is controlled to drive a three-jaw clamping fixture to move to detect the tear force of the aluminum-plastic cover. The structure of this detection fixture is relatively complex, and the loading process is cumbersome. In addition, when using a three-jaw clamping fixture, it is easy to cause mis-clamping (one fixture clamps both the aluminum cover and the plastic cover), resulting in inaccurate tear force data. Summary of the invention

[0005] The technical problem to be solved by the utility model is that the loading and unloading of materials are complicated, resulting in low detection efficiency, and the presence of mis-clamping during the loading process leads to large detection errors.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: an aluminum-plastic cover tearing force detection tooling, including a first mounting block and a second mounting block, the first mounting block and the second mounting block are respectively fixed on two cross beams of a tensile testing machine, a clamping assembly for clamping the aluminum cover part of the aluminum-plastic cover is fixedly connected to the first mounting block, and a push claw is connected to the second mounting block through a connecting chain, and an arc-shaped notch is opened at the movable end of the push claw.

[0007] Preferably, the clamping assembly includes a connecting block fixedly connected to the first mounting block, the bottom end of the connecting block is provided with a connecting head that cooperates with the inner wall of the aluminum-plastic cover, the side wall of the connecting block is threadedly connected to the locking screw, the locking screw is sleeved with a clamping block, and the movable end of the locking screw is provided with an annular protrusion.

[0008] Preferably, the clamping block is L-shaped, one end of the clamping block is fitted with the bottom end of the connecting block, and an arc-shaped notch is provided at the end where the clamping block and the connecting block fit together.

[0009] Preferably, the radius of the arc-shaped notch of the clamping block is larger than the outer wall of the aluminum-plastic cover.

[0010] Preferably, the movable end of the locking screw is connected to a gripping rod, and the gripping rod is arranged obliquely to the locking screw.

[0011] Preferably, the bottom end of the clamping assembly is tilted in a direction away from the first mounting block.

[0012] Preferably, a mounting screw is vertically slidably connected to the second mounting block, both ends of the mounting screw are provided with limiting protrusions, and one end of the connecting chain is connected to the top of the mounting screw.

[0013] 1. The utility model provides a tearing force detection tool for aluminum-plastic cover, which is fixed on the crossbeam of a tensile testing machine through a first mounting block and a second mounting block, and the aluminum cover part of the aluminum-plastic cover is fixed and adhered through a clamping assembly. The outer diameter of the plastic cover of the aluminum-plastic cover is larger than the outer diameter of the aluminum cover, and a pusher claw is buckled on the plastic cover part of the aluminum-plastic cover. The crossbeam is driven to move by a tensile testing machine, and the pusher claw is driven to separate the plastic cover from the aluminum cover, so as to realize accurate measurement of the tearing force of the aluminum-plastic cover.

[0014] 2. The clamping assembly is provided with a connecting head and a clamping block. The aluminum-plastic cover is clamped by putting the aluminum-plastic cover on the connecting head, rotating the locking screw, and using the clamping block to complete the clamping of the aluminum-plastic cover, thereby realizing rapid loading of the aluminum-plastic cover for testing and improving the efficiency of the tearing force testing of the aluminum-plastic cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic structural diagram of the utility model according to an embodiment of the utility model.

[0017] Figure 2 It is a schematic structural diagram of the top clamping assembly in an embodiment of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the bottom extraction component in the embodiment of the utility model.

[0019] In the figure: 1. first mounting block; 2. connecting block; 3. connecting head; 4. locking screw; 5. clamping block; 6. gripping rod; 7. second mounting block; 8. mounting screw; 9. connecting chain; 10. pusher claw. DETAILED DESCRIPTION

[0020] like Figure 1As shown, the utility model provides an aluminum-plastic cover tearing force detection tool, comprising a first mounting block 1 and a second mounting block 7, the first mounting block 1 and the second mounting block 7 are respectively fixed on two cross beams of a tensile testing machine, a clamping assembly for clamping an aluminum cover part of the aluminum-plastic cover is fixedly connected to the first mounting block 1, and a pusher claw 10 is connected to the second mounting block 7 through a connecting chain 9, and an arc-shaped notch is provided at the movable end of the pusher claw 10.

[0021] The first mounting block 1 and the second mounting block 7 are fastened to two movable beams of the tensile machine by bolts, and the first mounting block 1 is located above the second mounting block 7. The clamping assembly is then fixed to the first mounting block 1 by bolts, and the aluminum-plastic cover is placed on the clamping assembly, and the clamping assembly is controlled to clamp the aluminum cover part of the aluminum-plastic cover. After clamping and fixing, the height difference between the first mounting block 1 and the second mounting block 7 is adjusted according to the length of the connecting chain 9 to ensure that the movable end of the pusher claw 10 on the connecting chain 9 can be buckled on the plastic cover of the aluminum-plastic cover, and then one or two beams of the tensile machine are controlled to move so that the first mounting block 1 and the second mounting block 7 move away from each other, and the connecting chain 9 is straightened. Finally, during the pulling process, the pusher claw 10 separates the plastic cover and the aluminum cover of the aluminum-plastic cover to complete the tearing force measurement of the aluminum-plastic cover.

[0022] like Figure 1 and Figure 2 As shown, in order to clamp the aluminum cover part of the aluminum-plastic cover, the clamping assembly includes a connecting block 2 fixedly connected to the first mounting block 1, a connector 3 matched with the inner wall of the aluminum-plastic cover is arranged at the bottom of the connecting block 2, a locking screw 4 is threadedly connected to the side wall of the connecting block 2, a clamping block 5 is sleeved on the locking screw 4, and an annular protrusion is arranged at the movable end of the locking screw 4.

[0023] The aluminum cover part of the aluminum-plastic cover has a certain depth. When clamping the aluminum-plastic cover, the aluminum cover is buckled on the connecting head 3, and then the locking screw 4 is manually rotated, and the locking screw 4 drives the clamping block 5 to move. The movable end of the clamping block 5 cooperates with the connecting head 3 to clamp the aluminum cover part buckled on the connecting head 3, and the length of the clamping block 5 is controlled to ensure that the clamping block 5 does not interfere with the plastic cover part when clamping the aluminum cover part.

[0024] like Figure 1 and Figure 2 As shown, in order to prevent the clamping block 5 from shaking during the movement, the clamping block 5 is L-shaped, one end of the clamping block 5 is in contact with the bottom end of the connecting block 2, and an arc-shaped notch is provided at the end of the clamping block 5 and the connecting block 2. The movable end of the clamping block 5 is in close contact with the bottom end of the connecting head 3, so that the clamping block 5 remains parallel to the connecting block 2 during the movement, and the aluminum cover part on the connecting head 3 can be stably clamped.

[0025] As a preferred embodiment of the utility model, in order to ensure that the clamping block 5 can clamp aluminum-plastic covers of different sizes, the radius of the arc-shaped notch of the clamping block 5 is larger than the outer wall of the aluminum-plastic cover.

[0026] As a preferred embodiment of the present invention, in order to facilitate the staff to rotate the locking screw 4, the movable end of the locking screw 4 is connected to a gripping rod 6, and the gripping rod 6 is arranged obliquely to the locking screw 4.

[0027] like Figure 1 and Figure 2 As shown, in order to facilitate the staff to load the aluminum-plastic cover, the bottom end of the clamping assembly is tilted away from the first mounting block 1.

[0028] like Figure 1 and Figure 3 The second mounting block 7 is vertically slidably connected with a mounting screw 8 , both ends of the mounting screw 8 are provided with limit protrusions, and one end of the connecting chain 9 is connected to the top of the mounting screw 8 .

[0029] When controlling the lateral separation movement of the tensile testing machine, the connecting chain 9 is preferentially pulled to a vertical state during the pulling process, and then the pulling is continued. When the connecting chain 9 is in the straightened state, the second mounting block 7 moves downward, while the mounting screw 8 remains stationary, and the second mounting block 7 continues to move, so that relative movement occurs between the mounting screw 8 and the second mounting block 7. After the second mounting block 7 moves downward and contacts the limiting protrusion at the bottom end of the mounting screw 8, the mounting screw 8 is pulled downward by the limiting protrusion to pull the claw 10 downward, and then the tearing force is measured. The measurement result needs to subtract the gravity of the claw 10, the connecting chain 9 and the mounting screw 8.

Claims

1. A tearing force detection tool for aluminum-plastic cover, characterized by: The invention comprises a first mounting block (1) and a second mounting block (7), wherein the first mounting block (1) and the second mounting block (7) are respectively fixed on two cross beams of a tensile testing machine, the first mounting block (1) is fixedly connected with a clamping assembly for clamping an aluminum cover portion of an aluminum-plastic cover, the second mounting block (7) is connected with a pusher claw (10) via a connecting chain (9), and an arc-shaped notch is provided at the movable end of the pusher claw (10).

2. The aluminum-plastic cover tearing force detection tool as claimed in claim 1, characterized in that: The clamping assembly comprises a connecting block (2) fixedly connected to the first mounting block (1); a connecting head (3) cooperating with the inner wall of the aluminum-plastic cover is arranged at the bottom end of the connecting block (2); a locking screw (4) is threadedly connected to the side wall of the connecting block (2); a clamping block (5) is sleeved on the locking screw (4); and an annular protrusion is arranged at the movable end of the locking screw (4).

3. The tearing force detection tool for aluminum-plastic cover according to claim 2, characterized in that: The clamping block (5) is L-shaped, one end of the clamping block (5) is in contact with the bottom end of the connecting block (2), and an arc-shaped notch is provided at the end where the clamping block (5) and the connecting block (2) are in contact.

4. The aluminum-plastic cover tearing force detection tool as claimed in claim 3, characterized in that: The radius of the arc-shaped notch of the clamping block (5) is larger than the outer wall of the aluminum-plastic cover.

5. The aluminum-plastic cover tearing force detection tool as claimed in claim 2, characterized in that: The movable end of the locking screw (4) is connected to a gripping rod (6), and the gripping rod (6) is arranged obliquely with respect to the locking screw (4).

6. The tearing force testing tool for aluminum-plastic cover according to any one of claims 1 to 5, characterized in that: The bottom end of the clamping assembly is arranged to be inclined in a direction away from the first mounting block (1).

7. The aluminum-plastic cover tearing force testing tool as claimed in claim 1, characterized in that: A mounting screw rod (8) is vertically slidably connected to the second mounting block (7), and both ends of the mounting screw rod (8) are provided with limit protrusions. One end of the connecting chain (9) is connected to the top end of the mounting screw rod (8).

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