An auxiliary positioning mold for lap shear test

Abstract

The utility model discloses a kind of auxiliary positioning mould for lap shear test, is located mould technical field, the inside of the first positioning sleeve and the second positioning sleeve is symmetrically provided with clamping sleeve, the inside of the clamping sleeve is equipped with installation groove, the inside of the installation groove is equipped with magnetic attraction plate, the outside of the first positioning sleeve and the second positioning sleeve is penetrated by screw rod, one end of the screw rod is connected with carousel;The front surface of the support is equipped with mounting plate, the upper surface of the mounting plate is fixed with first connecting plate, and the lower surface of mounting plate is fixed with second connecting plate, the upper surface of the first connecting plate is equipped with motor, the driving end of the motor is connected with shaft, the outside of the shaft is equipped with baffle. By motor work will make shaft rotate, and adjustable baffle position when rotating, and then the baffle can be used to protect workers, avoid end head fracture when lap shear test to cause harm to workers.

Description

Technical Field

[0001] This utility model relates to the field of positioning mold technology, and in particular to an auxiliary positioning mold for overlapping shearing test. Background Technology

[0002] The lap shear test is a key test method for evaluating the shear strength of material joints (such as welded joints and adhesive joints). It is widely used in aerospace, automobile manufacturing, building materials and other fields. During the test, the two ends of the lap sample are fixed to the upper and lower clamps of the testing machine, and shear loading is achieved by applying axial tensile force to obtain the shear strength data of the sample.

[0003] However, most existing lap shear tests involve directly exposing the joint to the outside, which can lead to breakage due to excessive tensile force during testing. This breakage can cause debris to fly out and injure workers. Therefore, those skilled in the art have provided an auxiliary positioning mold for lap shear testing to solve the problems mentioned in the background section. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an auxiliary positioning mold for lap shear testing, which solves the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an auxiliary positioning mold for lap shearing test, comprising a base, two supports disposed on the upper surface of the base, a lifting plate slidably mounted between the two supports, a second positioning sleeve mounted on the lower surface of the lifting plate, and a first positioning sleeve mounted on the upper surface of the base. Clamping sleeves are symmetrically arranged inside the first and second positioning sleeves. An installation groove is provided on the inner side of the clamping sleeve, and a magnetic suction plate is installed inside the installation groove. A screw passes through the outer side of the first and second positioning sleeves, and one end of the screw is connected to a turntable.

[0006] A mounting plate is installed on the front surface of the bracket. A first connecting plate is fixed on the upper surface of the mounting plate, and a second connecting plate is fixed on the lower surface of the mounting plate. A motor is installed on the upper surface of the first connecting plate. A rotating shaft is connected to the drive end of the motor, and a baffle is installed on the outside of the rotating shaft.

[0007] As a further technical solution of this utility model, a fixing plate is installed between the two sets of brackets, and a cylinder is installed on the upper surface of the fixing plate, with the telescopic end of the cylinder connected to the upper surface of the lifting plate.

[0008] As a further technical solution of this utility model, the clamping sleeve is arc-shaped, and an anti-slip layer is provided on the inner side of the clamping sleeve.

[0009] As a further technical solution of this utility model, a bearing is provided on the outer side of the clamping sleeve, and one end of the bearing is embedded inside the bearing.

[0010] As a further technical solution of this utility model, the screw is provided with an external thread on its outside, and the first positioning sleeve and the second positioning sleeve are provided with internal threads that are threadedly connected to the external thread.

[0011] As a further technical solution of this utility model, the first connecting plate, the mounting plate and the second connecting plate are arranged in a "U" shape, and the mounting plate is installed on the front surface of the bracket by bolts.

[0012] This utility model provides an auxiliary positioning mold for lap shear testing, which has the following advantages compared with the prior art:

[0013] 1. This design provides an auxiliary positioning mold for lap shearing tests. Through the arrangement of a baffle, mounting plate, first connecting plate, second connecting plate, motor, and rotating shaft, the rotating shaft will rotate when the motor is working. The position of the baffle can be adjusted during rotation, thereby protecting the workers and preventing the end from breaking and causing injury to the workers during the lap shearing test.

[0014] 2. This design provides an auxiliary positioning mold for lap shear testing. The screw is rotated by a turntable, which causes the clamping sleeve to move. During this movement, the clamping sleeve can be used to clamp and position the joint for lap shear testing. The anti-slip layer can improve the clamping effect, and the magnetic plate can increase the clamping force on the joint, preventing it from falling off and affecting the test. It has good practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an auxiliary positioning mold for lap shear testing;

[0016] Figure 2 This is a schematic diagram of the clamping sleeve in an auxiliary positioning mold for lap shear testing.

[0017] Figure 3 This is a schematic diagram of the magnetic suction plate in an auxiliary positioning mold for lap shear testing.

[0018] Figure 4 This is a schematic diagram of the baffle in an auxiliary positioning mold used for lap shearing tests.

[0019] In the diagram: 1. Base; 11. Bracket; 12. Lifting plate; 13. First positioning sleeve; 14. Second positioning sleeve; 2. Baffle; 21. Mounting plate; 22. First connecting plate; 23. Second connecting plate; 24. Motor; 25. Rotating shaft; 3. Cylinder; 4. Clamping sleeve; 41. Magnetic suction plate; 42. Screw; 43. Turntable; 44. Anti-slip layer; 45. Mounting groove; 46. Bearing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides an auxiliary positioning mold for lap shearing test: it includes a base 1, two supports 11 set on the upper surface of the base 1, a lifting plate 12 slidably installed between the two supports 11, a second positioning sleeve 14 installed on the lower surface of the lifting plate 12, and a first positioning sleeve 13 installed on the upper surface of the base 1. The first positioning sleeve 13 and the second positioning sleeve 14 are symmetrically provided with clamping sleeves 4 inside. The inner side of the clamping sleeve 4 is provided with an installation groove 45. A magnetic suction plate 41 is installed inside the installation groove 45. The outer sides of the first positioning sleeve 13 and the second positioning sleeve 14 are penetrated by a screw 42. One end of the screw 42 is connected to a turntable 43. When the screw 42 with one end of the turntable 43 is rotated, the clamping sleeve 4 will move to clamp the joint inside the first positioning sleeve 13 and the second positioning sleeve 14, ensuring the stability of the connection.

[0022] A mounting plate 21 is installed on the front surface of the bracket 11. A first connecting plate 22 is fixed on the upper surface of the mounting plate 21, and a second connecting plate 23 is fixed on the lower surface of the mounting plate 21. A motor 24 is installed on the upper surface of the first connecting plate 22. A rotating shaft 25 is connected to the drive end of the motor 24. A baffle 2 is installed on the outside of the rotating shaft 25. This arrangement uses the operation of the motor 24 to make the rotating shaft 25 rotate. When it rotates, it adjusts the position of the baffle 2, thus protecting the staff and preventing the splashes generated during the test from causing injury to the staff.

[0023] like Figure 1 As shown, a fixing plate is installed between the two sets of brackets 11. A cylinder 3 is installed on the upper surface of the fixing plate. The telescopic end of the cylinder 3 is connected to the upper surface of the lifting plate 12. This arrangement uses the operation of the cylinder 3 to make the lifting plate 12 rise and fall. When it rises and falls, the distance between the first positioning sleeve 13 and the second positioning sleeve 14 can be adjusted, thereby achieving the purpose of performing overlap shearing tests on the material.

[0024] like Figure 3 As shown, the clamping sleeve 4 is arc-shaped, and an anti-slip layer 44 is provided on the inner side of the clamping sleeve 4. A bearing 46 is provided on the outer side of the clamping sleeve 4, and one end of the bearing 46 is embedded inside the bearing 46. The screw 42 is provided with external threads on the outside. The first positioning sleeve 13 and the second positioning sleeve 14 are provided with internal threads that are threaded to the external threads. This arrangement utilizes the screw 42 to be threaded to the screw holes opened inside the first positioning sleeve 13 and the second positioning sleeve 14. In this way, the clamping sleeve 4 can move to clamp the material inside the first positioning sleeve 13 and the second positioning sleeve 14, thus ensuring its stability.

[0025] like Figure 4 As shown, the first connecting plate 22, the mounting plate 21 and the second connecting plate 23 are arranged in a "U" shape. The mounting plate 21 is installed on the front surface of the bracket 11 by bolts. This arrangement allows the mounting plate 21 to be installed on the front surface of the bracket 11 by bolts, which facilitates the subsequent protection of workers by the baffle 2.

[0026] The working principle of this utility model is as follows: When using the auxiliary positioning mold for overlapping shear test, the two ends of the material to be tested are first placed inside the first positioning sleeve 13 and the second positioning sleeve 14 respectively. After placement, the turntable 43 is rotated. During rotation, the screw 42 is threadedly connected to the first positioning sleeve 13 and the second positioning sleeve 14, which allows the clamping sleeve 4 to move towards the material position. Thus, the material can be clamped and positioned by the clamping sleeve 4. The magnetic suction plate 41 can improve the stability of the material clamping and prevent it from falling off.

[0027] During testing, the lifting plate 12 is raised and lowered by the operation of cylinder 3 to apply axial tensile force to achieve shear loading and finally obtain the shear strength data of the sample. This is the technology of existing universal testing machines, which will not be discussed in detail here. When shearing, the motor 24 on the first connecting plate 22 is turned on, which will cause the rotating shaft 25 to rotate. When it rotates, the baffle 2 can be rotated to the front of the material, so as to shield and protect the material being sheared and prevent the flying debris generated by its shearing fracture from causing injury to the staff.

[0028] All electrical devices used in this invention are existing and known, and are connected to an external main controller and power supply. The main controller can be a conventional and known device such as a computer, and can be purchased and used directly on the market. Its structure, circuit and control principle are all existing and known technologies. Therefore, the structure, circuit and control principle of the device are not described in detail here.

[0029] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. An auxiliary positioning mold for lap shearing testing, characterized in that, The device includes a base (1), two supports (11) disposed on the upper surface of the base (1), a lifting plate (12) slidably mounted between the two supports (11), a second positioning sleeve (14) mounted on the lower surface of the lifting plate (12), and a first positioning sleeve (13) mounted on the upper surface of the base (1). The first positioning sleeve (13) and the second positioning sleeve (14) are symmetrically provided with clamping sleeves (4). The clamping sleeve (4) has an installation groove (45) on its inner side. A magnetic suction plate (41) is installed inside the installation groove (45). A screw (42) passes through the outer side of the first positioning sleeve (13) and the second positioning sleeve (14). One end of the screw (42) is connected to a turntable (43). A mounting plate (21) is installed on the front surface of the bracket (11). A first connecting plate (22) is fixed on the upper surface of the mounting plate (21), and a second connecting plate (23) is fixed on the lower surface of the mounting plate (21). A motor (24) is installed on the upper surface of the first connecting plate (22). A rotating shaft (25) is connected to the drive end of the motor (24), and a baffle (2) is installed on the outside of the rotating shaft (25).

2. The auxiliary positioning mold for lap shearing test according to claim 1, characterized in that, A fixing plate is installed between the two sets of brackets (11), and a cylinder (3) is installed on the upper surface of the fixing plate. The telescopic end of the cylinder (3) is connected to the upper surface of the lifting plate (12).

3. The auxiliary positioning mold for lap shearing test according to claim 1, characterized in that, The clamping sleeve (4) is arc-shaped, and an anti-slip layer (44) is provided on the inner side of the clamping sleeve (4).

4. The auxiliary positioning mold for lap shearing test according to claim 1, characterized in that, The outer side of the clamping sleeve (4) is provided with a bearing (46), and one end of the bearing (46) is embedded inside the bearing (46).

5. The auxiliary positioning mold for lap shearing test according to claim 1, characterized in that, The screw (42) is provided with an external thread on the outside, and the first positioning sleeve (13) and the second positioning sleeve (14) are provided with internal threads that are threadedly connected to the external thread.

6. The auxiliary positioning mold for lap shearing test according to claim 1, characterized in that, The first connecting plate (22), the mounting plate (21) and the second connecting plate (23) are arranged in a "U" shape. The mounting plate (21) is installed on the front surface of the bracket (11) by bolts.

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