Automatic feeding device for universal testing machine

Abstract

The invention discloses an automatic feeding device for a universal testing machine, comprising a bin frame, a driving device, a driving sprocket assembly, a first sprocket group and a second sprocket group; the driving device is connected to the bin frame; the driving sprocket assembly is connected to the driving device; the first sprocket group comprises a first driving sprocket and a first driven sprocket connected by a first chain, the first driving sprocket is connected to the driving sprocket assembly; the second sprocket group comprises a second driven sprocket and a third driven sprocket connected by a second chain, the first driving sprocket and the second driven sprocket, the first driven sprocket and the third driven sprocket are connected by shafts; a material taking and discharging unit is provided at corresponding positions on the second chain and the first chain, when the material taking and discharging unit is driven to a material taking station, a material taking action is automatically completed; when the material taking and discharging unit is driven to a material discharging station, a material discharging action is automatically completed. The invention realizes automatic, fast and accurate material taking, reduces labor intensity and test costs, and improves test efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of tensile testing equipment, and in particular relates to an automatic feeding device for a universal testing machine. Background Art

[0002] At present, most quality inspection agencies still use the method of manually loading and unloading steel bar specimens during the steel bar tensile test. The staff will take a steel bar specimen to be tested from the material turnover trolley, place it in the center of the universal machine chuck, press the chuck start button, the chuck will move and clamp the steel bar specimen to be tested, and then press the test start button, and the universal machine will perform the tensile strength test. After the test is completed, the test specimen will be taken out manually, and the next steel bar specimen will be taken from the material turnover trolley to repeat the above operation. It can be seen that the current operation has the disadvantages of high labor intensity, low efficiency, high cost, etc., and there are safety hazards to the staff. Summary of the invention

[0003] In view of the above problems, the present invention proposes an automatic feeding device for a universal testing machine, which realizes automatic, rapid and accurate material taking, has a simple structure, is safe and reliable, reduces labor intensity and test costs, and improves test efficiency.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] An automatic feeding device for a universal testing machine, comprising:

[0006] Silo rack;

[0007] A driving device connected to the silo frame;

[0008] A driving sprocket assembly connected to the driving device;

[0009] A first sprocket assembly, comprising a first driving sprocket and a first driven sprocket connected by a first chain, wherein the first driving sprocket is also connected to the driving sprocket assembly;

[0010] The second sprocket group is arranged in pairs with the first sprocket group, including a second driven sprocket and a third driven sprocket connected by a second chain, and the first driving sprocket and the second driven sprocket as well as the first driven sprocket and the third driven sprocket are fixedly connected by a shaft; a material picking and unloading unit is provided at corresponding positions on the second chain and the first chain, and when the material picking and unloading unit is driven to the material picking station, the material picking action is automatically completed; when the material picking and unloading unit is driven to the material unloading station, the material unloading action is automatically completed.

[0011] Optionally, the number of the first sprocket groups and the second sprocket groups is greater than 1, and the first sprocket groups are arranged sequentially in the same horizontal direction, and the driving sprocket assembly includes:

[0012] A third sprocket set includes three second driving sprockets and a third chain, wherein the three second driving sprockets are arranged in a triangle shape; and the third chain is wrapped around the outside of the three second driving sprockets;

[0013] A fourth sprocket set, comprising a plurality of fourth driven sprockets, all of which are connected to one of the second driving sprockets via a fourth chain;

[0014] The fifth sprocket set includes a plurality of fifth driven sprockets, and all the fifth driven sprockets are connected with another second driving sprocket through a fifth chain.

[0015] Optionally, the second driving sprocket set further includes two tensioning wheels, which are symmetrically arranged and in contact with the third chain for tensioning the second chain.

[0016] Optionally, a first bearing seat is provided on the silo frame, and each first driving sprocket is connected to the corresponding fourth driven sprocket or fifth driven sprocket via a transmission shaft provided in the first bearing seat.

[0017] Optionally, a limiting sleeve is provided on the outer side of each of the second driving sprocket, the fourth driven sprocket and the fifth driven sprocket.

[0018] Optionally, the material picking and unloading unit includes relatively arranged chain pallets, one end of each chain pallet is hinged to the first chain or the second chain, and the other end is in a free state; when the material picking and unloading unit is driven to the material picking station, the relatively arranged chain pallets pick up the material; when the material picking and unloading unit is driven between the material picking station and the material unloading station, the material is lifted or clamped by the relatively arranged chain pallets; when the material picking and unloading unit is driven between the material unloading stations, the material is separated from the relatively arranged chain pallets under the action of gravity, and the unloading is completed.

[0019] Optionally, the cross-section of the chain clamp is C-shaped.

[0020] Optionally, the number of the material taking and discharging units is greater than or equal to 1; a return trough is provided under the silo frame; when the material taking and discharging unit is located at the highest point in the vertical direction, the relatively arranged chain clamps rotate to the side away from each other under the action of gravity to realize the opening of the material taking and discharging unit; when the material taking and discharging unit is located at the lowest point in the vertical direction, the material is separated from the relatively arranged chain clamps under the action of gravity and falls into the return trough to complete the discharging.

[0021] Optionally, the automatic feeding device of the universal testing machine further comprises a relatively arranged pushing assembly, wherein the pushing assembly comprises a cylinder and a pushing plate, wherein the cylinder is connected to a silo frame, and a piston rod thereof is connected to the pushing plate to drive the pushing plate to move.

[0022] Optionally, the automatic feeding device of the universal testing machine further comprises:

[0023] A pad, mounted on the silo frame;

[0024] A motor mounting plate is mounted on the backing plate, and the driving device is mounted on the motor mounting plate.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] Based on the automatic feeding device for the universal testing machine proposed in the present invention, when conducting a universal testing machine test, the staff only needs to put the materials (such as steel bar test pieces) into the picking and unloading unit in sequence at the picking station, and the first active sprocket group and the first driven sprocket group cooperate to drive the picking and unloading unit to move to the unloading station to complete the unloading. The feeding robot can automatically and continuously grab the materials on the automatic feeding device, and evenly clamp the materials and place them on the universal testing machine for tensile testing. The structure is simple, safe and reliable, the labor intensity is reduced, the test cost is reduced, and the test efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0028] Figure 1 It is a schematic diagram of the overall structure of an automatic feeding device for a universal testing machine according to an embodiment of the present invention;

[0029] Figure 2 It is a partial structural schematic diagram of an automatic feeding device for a universal testing machine according to an embodiment of the present invention;

[0030] in:

[0031] 1-driving device, 2-driving sprocket assembly, 3-first driving sprocket, 4-first driven sprocket, 5-bin frame, 6-fourth driven sprocket, 7-tensioning wheel, 8-fourth chain, 9-motor, 10-reducer, 11-tensioning seat, 12-motor mounting plate, 13-plate, 14-pad, 15-transmission shaft, 16-first bearing seat, 17-spacer, 18-limiting sleeve, 19-second driven sprocket, 20-third driven sprocket, 21-shaft, 22-chain clamp, 23-material, 24-return trough, 25-push assembly, 26-cylinder, 27-bearing, 28-push plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of protection of the present invention.

[0033] The application principle of the present invention is described in detail below in conjunction with the accompanying drawings.

[0034] Example 1

[0035] like Figure 1-2 As shown, an embodiment of the present invention provides an automatic feeding device for a universal testing machine, comprising:

[0036] The silo frame 5, in a specific implementation of the embodiment of the present invention, the silo frame 5 includes support plates arranged opposite to each other, and a rectangular tube is arranged between the support plates as a support;

[0037] A driving device 1 connected to the silo frame 5;

[0038] A driving sprocket assembly 2 is connected to the driving device 1 and its start and stop states are controlled by the driving device 1;

[0039] A first sprocket assembly, comprising a first driving sprocket 3 and a first driven sprocket 4 connected by a first chain, wherein the first driving sprocket 3 is also connected to the driving sprocket assembly 2;

[0040] The second sprocket group is arranged in pair with the first sprocket group, including a second driven sprocket 19 and a third driven sprocket 20 connected by a second chain, the first driving sprocket 3 and the second driven sprocket 19 are connected by a shaft, the first driven sprocket 4 and the third driven sprocket 20 are fixedly connected by a shaft 21, the shaft 21 is fixed to the silo frame 5, and each sprocket is fixed to the shaft by a flat key; a material picking and unloading unit is provided at the corresponding position on the second chain and the first chain, and when the material picking and unloading unit is driven to the material picking station, the material picking action is automatically completed, and the two ends of the material 23 are respectively located on the material picking and unloading units on the first chain and the second chain; when the material picking and unloading unit is driven to the material unloading station, the material unloading action is automatically completed.

[0041] In a specific implementation of an embodiment of the present invention, the number of the first sprocket group and the second sprocket group is greater than 1, and the first sprocket groups are arranged sequentially in the same horizontal direction. The driving device 1 includes a connected motor 9 and a reducer, and the automatic feeding device of the universal testing machine also includes a pad 14 and a motor mounting plate 12, and the pad 14 is installed on the silo frame 5; the motor mounting plate 12 is installed on the pad 14, and the motor 9 and the reducer 10 are installed on the motor mounting plate 12, and the output end of the reducer 10 is connected to the driving sprocket assembly 2.

[0042] like Figure 1-2 As shown, in a specific implementation of the present invention, the driving sprocket assembly 2 includes: a third sprocket set, a fourth sprocket set, a fifth sprocket set and a first bearing seat 16;

[0043] The third sprocket set includes three second driving sprockets and a third chain, wherein the three second driving sprockets are arranged in a triangular shape, wherein one of the second driving sprockets is connected to the driving device 1 and is provided with driving power by the driving device 1; the third chain is wrapped around the outside of the three second driving sprockets;

[0044] The fourth sprocket set includes a plurality of fourth driven sprockets 6, and all the fourth driven sprockets 6 are connected to one of the second driving sprockets via a fourth chain 8;

[0045] The fifth sprocket group includes a plurality of fifth driven sprockets, all of which are connected to another second driving sprocket through a fifth chain; the central axes of the fifth driven sprocket in the fifth sprocket group and the fourth driven sprocket 6 in the fourth sprocket group are located on the same straight line;

[0046] The silo frame 5 is provided with a first bearing seat 16 , and each first driving sprocket 3 is connected to the corresponding fourth driven sprocket 6 or fifth driven sprocket through a transmission shaft provided in the first bearing seat 16 , and a spacer sleeve 17 is provided between the first driving sprocket 3 and the first bearing seat 16 .

[0047] It can be seen that the driving principle of the driving sprocket assembly 2 in the embodiment of the present invention is: when the driving device 1 provides power, one of the second active sprockets obtains the driving force and is driven, thereby realizing the driving of the third sprocket group; the third sprocket group drives the fourth sprocket group and the fifth sprocket group to move, thereby realizing the rotation of the entire driving sprocket assembly 2; the driving sprocket assembly 2 drives the first sprocket group to move, and the first sprocket group drives the second sprocket group to move.

[0048] like Figure 1 As shown, in a specific implementation, four silos are provided on the silo frame 5, and each of the four silos is separated by a sheet metal baffle, and each silo is provided with a pair of first sprocket groups and second sprocket groups. When the driving device 1 provides power, the first sprocket groups and the second sprocket groups in the four silos all produce synchronous rotation.

[0049] Furthermore, in order to prevent the second chain from loosening during operation and causing the driving sprocket assembly 2 to fail, the second active sprocket assembly further includes two tensioning wheels 7, which are symmetrically arranged and in contact with the third chain. In the specific implementation process, each tensioning wheel 7 is connected to a tensioning seat 11 provided on the silo frame 5 through a plate 13.

[0050] Furthermore, in order to prevent the second driving sprocket, the fourth driven sprocket 6 and the fifth driven sprocket from sliding axially, a limiting sleeve 18 is provided on the outer side of each of the second driving sprocket, the fourth driven sprocket 6 and the fifth driven sprocket.

[0051] In a specific implementation of the present invention, the material picking and unloading unit includes chain clamps 22 arranged opposite to each other, one end of each chain clamp 22 is hinged to the first chain or the second chain, and the other end is in a free state; when the material picking and unloading unit is driven by the first driving unit to the material picking station, the chain clamps 22 arranged opposite to each other pick up the material; when the material picking and unloading unit is driven by the first driving unit to between the material picking station and the material unloading station, the chain clamps 22 arranged opposite to each other lift or clamp the material; when the material picking and unloading unit is driven by the first driving unit to between the material unloading stations, the material 23 is separated from the chain clamps 22 arranged opposite to each other under the action of gravity, and the unloading is completed. Preferably, in order to facilitate the clamping or support of the material 23, the cross section of the chain clamps 22 is C-shaped.

[0052] In a specific implementation of the present invention, the number of the material taking and discharging units is greater than or equal to 1, and each material taking and discharging unit is arranged at equal intervals on the first chain or the second chain; a return trough 24 is arranged below the silo frame 5; when the material taking and discharging unit is located at the highest point in the vertical direction, the relatively arranged chain clamps 22 rotate to the side away from each other under the action of gravity to realize the opening of the material taking and discharging unit, and the staff puts the material 23 (such as steel bars) between the relatively arranged chain clamps 22, or the manipulator grabs the material 23 (such as steel bars) and puts the material 23 (such as steel bars) between the relatively arranged chain clamps 22; when the relatively arranged chain clamps 22 are located between the highest point and the lowest point, the chain clamps 22 clamp the material 23; when the material taking and discharging unit is located at the lowest point in the vertical direction, the material 23 is separated from the relatively arranged chain clamps 22 under the action of gravity and falls into the return trough 24 to complete the material discharging. Repeat the previous steps to continuously perform automatic feeding.

[0053] Example 2

[0054] Based on Example 1, the difference between the embodiment of the present invention and Example 1 is that:

[0055] The automatic feeding device of the universal testing machine also includes a relatively arranged pushing assembly 25, which includes a cylinder 26 and a pushing plate 28. The cylinder 26 is connected to the silo frame 5, and its piston rod passes through a bearing 27 provided on the silo frame 5 and is connected to the pushing plate 28 to drive the pushing plate 28 to move.

[0056] The working process of the pusher assembly 25 in the embodiment of the present invention is specifically as follows:

[0057] When the material is placed on the corresponding material loading and unloading units on the first chain and the second chain, the cylinders 26 in the relatively arranged pushing components 25 respectively drive the corresponding pushing plates 28 to make relative movements, so as to adjust the material to a preset position and play a role in positioning the material.

[0058] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic feeding device for a universal testing machine, characterized in that: include: Silo rack; A driving device connected to the silo frame; A driving sprocket assembly connected to the driving device; A first sprocket assembly, comprising a first driving sprocket and a first driven sprocket connected by a first chain, wherein the first driving sprocket is also connected to the driving sprocket assembly; The second sprocket group is arranged in pairs with the first sprocket group, including a second driven sprocket and a third driven sprocket connected by a second chain, and the first driving sprocket and the second driven sprocket, as well as the first driven sprocket and the third driven sprocket are fixedly connected by a shaft; a material picking and unloading unit is provided at corresponding positions on the second chain and the first chain, and when the material picking and unloading unit is driven to the material picking station, the material picking action is automatically completed; when the material picking and unloading unit is driven to the material unloading station, the material unloading action is automatically completed; The number of the first sprocket group and the second sprocket group is greater than 1, and the first sprocket groups are arranged sequentially in the same horizontal direction, and the driving sprocket assembly includes: A third sprocket set includes three second driving sprockets and a third chain, wherein the three second driving sprockets are arranged in a triangle shape; and the third chain is wrapped around the outside of the three second driving sprockets; A fourth sprocket set, comprising a plurality of fourth driven sprockets, all of which are connected to one of the second driving sprockets via a fourth chain; The fifth sprocket set includes a plurality of fifth driven sprockets, and all the fifth driven sprockets are connected with another second driving sprocket through a fifth chain.

2. The automatic feeding device of a universal testing machine according to claim 1, characterized in that: The second sprocket set also includes two tensioning wheels, which are symmetrically arranged and in contact with the third chain for tensioning the second chain.

3. The automatic feeding device of a universal testing machine according to claim 1, characterized in that: The silo frame is provided with a first bearing seat, and each first driving sprocket is connected with the corresponding fourth driven sprocket or fifth driven sprocket through a transmission shaft arranged in the first bearing seat.

4. The automatic feeding device for a universal testing machine according to claim 1, characterized in that: The outer sides of the second driving sprocket, the fourth driven sprocket and the fifth driven sprocket are all provided with limiting sleeves.

5. The automatic feeding device for a universal testing machine according to claim 1, characterized in that: The material picking and unloading unit includes relatively arranged chain pallets, one end of each chain pallet is hinged to the first chain or the second chain, and the other end is in a free state; when the material picking and unloading unit is driven to the material picking station, the relatively arranged chain pallets pick up the material; when the material picking and unloading unit is driven between the material picking station and the material unloading station, the relatively arranged chain pallets lift or clamp the material; when the material picking and unloading unit is driven between the material unloading stations, the material is separated from the relatively arranged chain pallets under the action of gravity, and the unloading is completed.

6. The automatic feeding device for a universal testing machine according to claim 5, characterized in that: The cross section of the chain clamping plate is C-shaped.

7. The automatic feeding device for a universal testing machine according to claim 5, characterized in that: The number of the material taking and discharging units is greater than or equal to 1; a return material trough is provided under the silo frame; when the material taking and discharging units are located at the highest point in the vertical direction, the relatively arranged chain clamps rotate to the side away from each other under the action of gravity to realize the opening of the material taking and discharging units; when the material taking and discharging units are located at the lowest point in the vertical direction, the materials are separated from the relatively arranged chain clamps under the action of gravity and fall into the return material trough to complete the discharging.

8. The automatic feeding device of a universal testing machine according to claim 1, characterized in that: The automatic feeding device of the universal testing machine also includes a relatively arranged pushing assembly, which includes a cylinder and a pushing plate. The cylinder is connected to the silo frame, and its piston rod is connected to the pushing plate to drive the pushing plate to move.

9. The automatic feeding device of a universal testing machine according to claim 1, characterized in that: The automatic feeding device of the universal testing machine also includes: A pad, mounted on the silo frame; A motor mounting plate is mounted on the backing plate, and the driving device is mounted on the motor mounting plate.

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