Ring crush compression strength testing machine

Abstract

The utility model discloses a ring crush compression strength testing machine in the field of strength testing equipment, which comprises a rack, a gravity compression bar with one end inserted into the rack is arranged on the surface of the rack, a sensor connected to the tail end of the gravity compression bar and used for sensing pressure strength is arranged in the rack, and the top of the gravity compression bar is connected with a lower clamping plate pressing down towards one end of the sensor. A supporting and fixing top plate is arranged above the rack, the bottom of the top plate is connected with a motor and an upper clamping plate driven and controlled by the motor to move towards one end of the lower clamping plate, the surface of the lower clamping plate is provided with a paper base placed in the center, the center of the bottom of the paper base is provided with a protruding part which protrudes and is clamped into the lower clamping plate to be fixed, and the surface of the paper base is provided with an annular clamping groove. The center of the bottom of the paper base is provided with the protruding part which protrudes and is clamped and fixed to the lower clamping plate, the protruding part enables the paper base to be fixed to the center of the lower clamping plate all the time, it is ensured that the paperboard is located at the center stress position of the two clamping plates in the whole testing process, and it is effectively prevented that in the testing process, the paperboard shifts, and the testing result is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of strength testing equipment, in particular to a ring compression strength testing machine. Background Art

[0002] Ring compression strength tester is a device used to measure the physical properties of cardboard, such as ring compression strength, edge compression strength, cardboard adhesive peel strength, and corrugated core flat compression strength. When testing ring-shaped cardboard, the cardboard is usually rolled up and fixed in a paper holder, and then the paper holder is placed in the center of the setting for testing.

[0003] However, after the paper holder is placed, the test force at the center between the two plywood is the most balanced, and the test force will not be affected by the tilt of the plywood. During the test, the plywood pressing down from above will first contact the cardboard. If the top of the cardboard is uneven and has an inclined edge, the paper jam will easily move to the end that has not been subjected to force, which can easily cause the paper jam to move. It is inevitable to ensure that the paper jam is in the center of the test position. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art solutions, the utility model provides a ring compression strength testing machine, which can effectively solve the technical problem that cardboard is easily displaced during testing.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The ring compression strength testing machine includes a frame, a gravity pressure rod with one end inserted into the inside of the frame is provided on the surface of the frame, a sensor connected to the end of the gravity pressure rod for sensing pressure strength is provided in the frame, a lower clamping plate is connected to the top of the gravity pressure rod for pressing down one end of the sensor, a supporting and fixed top plate is provided above the frame, a motor and an upper clamping plate driven by the motor to move toward one end of the lower clamping plate are connected to the bottom of the top plate, a paper seat placed in the center is provided on the surface of the lower clamping plate, a protrusion is provided at the center of the bottom of the paper seat and is fixed in the lower clamping plate, and an annular groove is provided on the surface of the paper seat.

[0007] Furthermore, the frame is provided with a sleeve fixed on the surface, and the gravity pressure rod is arranged inside the sleeve and moves.

[0008] Furthermore, a controller connected to the sensor and the motor is disposed in the frame, and a control panel and a printing port connected to the controller are also disposed at the front end of the frame.

[0009] Furthermore, pillars are provided between the frame and the top plate to support and fix on both sides, and outer covers are provided on the outsides of the pillars to support and fix together.

[0010] Furthermore, the outer layer of the motor is provided with a hood fixed to the bottom of the top plate.

[0011] Furthermore, the surface of the lower clamping plate is provided with an anti-skid layer, and the center of the anti-skid layer is provided with a groove for locking the protruding portion.

[0012] Furthermore, an insertion groove communicating with the annular clamping groove is provided on one side of the paper holder.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] When the utility model tests the cardboard, after the annularly wound cardboard is inserted into the paper seat, a protrusion that is clamped and fixed with the lower clamping plate is arranged at the center of the bottom of the paper seat, and the protrusion makes the paper seat always fixed at the center of the lower clamping plate, ensuring that the cardboard is at the position where the center of the two clamping plates is stressed during the entire test process, effectively preventing the problem of cardboard displacement during the test process from affecting the test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the frame of the utility model embodiment;

[0018] Figure 4 This is a schematic diagram of the surface structure of the paper holder in the embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the bottom structure of the paper holder in the embodiment of the utility model;

[0020] Numbers in the figure:

[0021] 1-frame, 2-gravity pressure bar, 3-sensor, 4-lower clamping plate, 5-top plate, 6-motor, 7-upper clamping plate, 8-paper seat, 9-protrusion, 10-annular card groove, 11-sleeve, 12-controller, 13-control panel, 14-print port, 15-pillar, 16-outer cover, 17-machine cover, 18-anti-slip layer, 19-groove, 20-insertion slot. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-5As shown, the utility model provides a ring compression strength testing machine, which is mainly used for testing the strength of cardboard ring structures. The ring compression strength performance is tested by pressing down the ring paper placed on the paper seat 8 on the surface of the lower clamping plate 4 by the upper clamping plate 7. The specific structure mainly includes a frame 1, and a supporting and fixed top plate 5 is provided above the frame 1. The bottom of the top plate 5 is connected to a motor 6 and an upper clamping plate 7 driven by the motor 6 to move toward one end of the lower clamping plate 4. The movement of the upper clamping plate 7 is driven and controlled by the motor 6. The motor 6 can have different downward pressure strengths, and the strength can be adjusted by the user according to actual requirements to meet different test conditions. A hood 17 with a bottom opening is provided on the outer layer of the motor 6. The hood 17 is fixed to the bottom of the top plate and surrounds the motor 6 to further protect the motor 6.

[0024] Support pillars 15 are provided between the frame 1 and the top plate 5 to support and fix on both sides. An outer cover 16 is also provided on the outer side of the support pillars 15 to support and fix together. The frame 1 and the top plate 5 are fixed together by the support pillars 15 and the outer cover 16. The cover 16 provided on the outer side of the support pillars 15 can increase the force-bearing area between the frame 1 and the top plate 5, thereby effectively improving the fixation and stability after connection.

[0025] A gravity pressure rod 2 with one end inserted into the interior is provided on the surface of the frame 1, and a sensor 3 connected to the end of the gravity pressure rod 2 for sensing pressure intensity is provided in the frame 1. A lower clamping plate 4 is connected to the top of the gravity pressure rod 2 for pressing down on one end of the sensor 3. When testing the ring compression strength of the cardboard, the gravity pressure rod 2 is pressed down after being subjected to the pressure of the upper clamping plate 7. The magnitude of the downward pressure tested by the sensor 3 is the magnitude of the ring compression strength. A lower clamping plate 4 used in conjunction with the upper clamping plate 7 is provided on the top of the gravity pressure rod 2. When in use, when testing the ring compression strength, the annular cardboard needs to be placed between the upper clamping plate 7 and the lower clamping plate 4, and then pressed down by the upper clamping plate 7 until the cardboard is destroyed, and the sensor 3 detects the downward pressure.

[0026] The frame 1 is provided with a sleeve 11 fixed on the surface, and the gravity pressure rod 2 is arranged inside the sleeve 11 for movement. Since the thickness of the frame 1 is relatively thin, the gravity pressure rod 2 needs to move vertically when moving. In order to avoid the gravity pressure rod 2 from tilting when moving, a sleeve 11 is added to the top of the frame 1 to strengthen the vertical movement of the gravity pressure rod 2. The gravity pressure rod 2 is arranged in the sleeve 11 and moves close to the inner wall of the sleeve 11. The direction of movement is guided by the sleeve 11, and the gravity pressure rod 2 will not be positionally offset during the movement. At this time, the pressure result tested by the sensor 3 connected to the bottom is more accurate.

[0027] The frame 1 is provided with a controller 12 connected to the sensor 3 and the motor 6 at the same time. The front end of the frame 1 is also provided with a control panel 13 and a printing port 14 connected to the controller 12. During the entire ring pressure test process, all operation processes and signal transmissions between various components are controlled and connected by the internal controller 12. At the same time, the frame 1 is also provided with a control panel 13 for the convenience of users to control the operation of the test machine, and is also provided with a printing port 14 for printing test data. A printing device usually needs to be set at the position corresponding to the printing port 14 in the frame 1.

[0028] The surface of the lower clamping plate 4 is provided with a paper seat 8 placed at the center, and the center of the bottom of the paper seat 8 is provided with a raised portion 9 that is inserted into and fixed inside the lower clamping plate 4. The surface of the paper seat 8 is provided with an annular groove 10, and the cardboard to be tested is stuck in the annular groove 10 of the paper seat 8 to form a circular ring structure. In order to ensure uniform force, the paper seat 8 needs to be placed at the center of the lower clamping plate 4 before testing. Therefore, a coaxially aligned raised portion 9 and a groove 19 are provided between the paper seat 8 and the lower clamping plate 4. An anti-slip layer 18 is also adhered to the surface of the lower clamping plate 4 to prevent the paper seat 8 placed in the groove 19 from moving. An insertion groove 20 that is connected to the annular groove 10 is also provided on one side of the paper seat 8, and the user can insert the cardboard to be tested through the insertion groove 20.

[0029] Compared with the traditional technology, when testing the cardboard, the present technical solution provides a protrusion 9 at the bottom center of the paper seat 8 after the annularly wound cardboard is inserted into the paper seat 8, which is fixedly engaged with the lower clamping plate 4. The protrusion 9 makes the paper seat 8 always fixed at the center of the lower clamping plate 4, ensuring that the cardboard is in the force-bearing position of the center of the two clamping plates during the entire test process, effectively preventing the problem of cardboard displacement during the test from affecting the test results.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. Ring compression strength testing machine, including a frame, characterized in that: The surface of the frame is provided with a gravity pressure rod with one end inserted into the interior, the frame is provided with a sensor connected to the end of the gravity pressure rod for sensing pressure intensity, the top of the gravity pressure rod is connected with a lower clamping plate for pressing down one end of the sensor, a supporting and fixed top plate is provided above the frame, the bottom of the top plate is connected with a motor and an upper clamping plate driven by the motor to move toward one end of the lower clamping plate, the surface of the lower clamping plate is provided with a paper seat placed in the center, the center of the bottom of the paper seat is provided with a protrusion that is inserted into and fixed inside the lower clamping plate, and the surface of the paper seat is provided with an annular groove.

2. The ring compression strength testing machine according to claim 1, characterized in that: The frame is provided with a sleeve fixed on the surface, and the gravity pressure rod is arranged inside the sleeve and moves.

3. The ring compression strength testing machine according to claim 1, characterized in that: A controller connected to the sensor and the motor is arranged in the frame, and a control panel and a printing port connected to the controller are arranged at the front end of the frame.

4. The ring compression strength testing machine according to any one of claims 1 to 3, characterized in that: Support pillars fixed on both sides are arranged between the frame and the top plate, and outer covers that are jointly supported and fixed are also arranged on the outer sides of the support pillars.

5. The ring compression strength testing machine according to claim 1, characterized in that: The outer layer of the motor is provided with a machine cover fixed on the bottom of the top plate.

6. The ring compression strength testing machine according to claim 1, characterized in that: The surface of the lower clamping plate is provided with an anti-skid layer, and the center of the anti-skid layer is provided with a groove for clamping the protruding part.

7. The ring compression strength testing machine according to claim 1, characterized in that: An insertion groove communicating with the annular clamping groove is also provided on one side of the paper holder.

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