Tensile strength detection device for butyronitrile glove production

Abstract

The invention relates to the field of flexible material tensile strength detection equipment, in particular to a tensile strength detection device for butyronitrile glove production, which comprises a lower half wheel and an upper half wheel, the lower half wheel and the upper half wheel are spliced into a wheel shape, and rings are respectively arranged between the lower half wheel and the upper half wheel at the wheel-shaped axis and are mutually embedded; a short shaft is inserted between the rings along the wheel-shaped axis, arc-shaped cutter strips are embedded in the outer arc wall of the upper half wheel and the outer arc wall of the lower half wheel, and the arc-shaped cutter strips are spliced into a circular ring shape. The lower half wheel and the upper half wheel provided by the invention not only can rotate in a combined manner to automatically cut a test sample through rolling cutting, but also can be separated to carry out a tensile test on the sample, so that the effects of automatically sampling the butyronitrile gloves and detecting the tensile strength of the sample can be realized; the problem that in the prior art, when a butyronitrile glove tensile strength test sample is manually cut, the edge of the sample is prone to being rough, so that the sample is prone to being torn in the test process, and the test result is inaccurate is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tensile strength detection equipment of flexible materials, and particularly relates to a tensile strength detection device for nitrile glove production. BACKGROUND

[0002] The tensile strength test of nitrile gloves on the market uses a general detection device, so it is necessary to manually cut a sample from the glove, and then fix the sample on the test device for tensile test. Such a detection method is widely used and mature, but some obvious shortcomings are found in the actual operation process, especially the manual cutting of the sample. In the process of stretching the nitrile material sample, the smoothness of the sample edge has a significant influence on the test result. For example, the size of the manually cut sample is not accurate, or the sample edge has a small burr wound that is difficult to detect with the naked eye, and the sample is extremely likely to tear from the edge burr during the sample stretching process, thereby reducing the tensile force value of the tensile strength test of the sample. Therefore, in order to optimize the above problems, a tensile strength detection device for nitrile glove production with higher automation is proposed. SUMMARY

[0003] In view of the above or the problem in the prior art that the manual cutting of the tensile strength test sample of the nitrile glove causes the sample edge to be rough and the sample test to be easily torn, resulting in inaccurate test results, the present application is proposed.

[0004] Therefore, the purpose of the present application is to provide a tensile strength detection device for nitrile glove production.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a tensile strength detection device for nitrile glove production, comprising: a lower half wheel and an upper half wheel, which are combined into a wheel shape, a ring is arranged between the lower half wheel and the upper half wheel at the wheel axis, the rings are embedded with each other, and a short shaft is inserted between the rings along the wheel axis, the outer arc walls of the upper half wheel and the lower half wheel are embedded with arc-shaped knife strips, the arc-shaped knife strips are spliced into a circular ring shape, and one end of the upper half wheel is arranged in a "V" shape and provided with a insertion hole; a pressing wheel, the peripheral wall of the pressing wheel abuts against the cutting edges of the arc-shaped knife strips, the ratio of the diameter of the wheel shape obtained by splicing the lower half wheel and the upper half wheel to the diameter of the pressing wheel is an irrational number, and the peripheral wall of the pressing wheel is provided with a clearance groove along the axis of the pressing wheel; a hollow shaft motor, the output shaft of the hollow shaft motor is connected to the pressing wheel in a transmission mode, the output shaft of the hollow shaft motor penetrates a circular tube, one end of the circular tube is fixedly connected to the short shaft, and the other end of the circular tube is connected to a pneumatic cylinder II for controlling the movement of the short shaft; and a numerical control lifting assembly, two pneumatic cylinders II are installed on the sliding table of the numerical control lifting assembly, the piston rods of the two pneumatic cylinders II are matched and inserted into the two insertion holes, and the numerical control lifting assembly is used for grabbing the upper half wheel.

[0006] As a preferred embodiment of the tensile strength testing device for nitrile glove production of the present invention, it further includes a bracket in the shape of an inverted "7". The linear guide, the housing of the CNC motor, the housing of the hollow shaft motor, and the housing of cylinder one in the CNC lifting assembly are fixedly connected to the bracket. The extrusion wheel and the lower half wheel are rotatably connected to the bracket.

[0007] As a preferred embodiment of the tensile strength testing device for nitrile glove production of the present invention, wherein: the lower half wheel extends in a tubular shape along the wheel-shaped axis obtained by splicing the lower half wheel and the upper half wheel towards the support, and is rotatably connected to the support by a rotating seat through the tubular extension.

[0008] As a preferred embodiment of the tensile strength testing device for nitrile glove production of the present invention, wherein: one end of the extrusion wheel is shaft-connected to a rotating seat two, and the shaft of the extrusion wheel passes through one end of the rotating seat two and the output shaft of the hollow shaft motor, both of which are fixedly sleeved with pulleys, the two pulleys are connected by belt drive, and the ratio of the radii of the two pulleys is equal to the arc radius of the arc-shaped blade and the radius of the extrusion wheel.

[0009] As a preferred embodiment of the tensile strength testing device for nitrile glove production of the present invention, wherein: the lead screw in the CNC lifting assembly is vertically arranged, and the ball nut is fixedly connected to the slider of the linear guide; adapters are fixed on both sides of the ball nut to form a slide table; and the housing of the second cylinder is fixedly connected to the adapters.

[0010] As a preferred embodiment of the tensile strength testing device for nitrile glove production of the present invention, wherein: a pneumatic rotary joint is assembled between the piston rod of the cylinder and the round tube; the outer peripheral wall of the wheel-shaped part obtained by splicing the lower half wheel and the upper half wheel is annularly grooved; and the upper half wheel and the lower half wheel are respectively matched and inlaid with metal filter cages in the groove; and the arc-shaped blades are symmetrically distributed about the two sides of the metal filter cage.

[0011] As a preferred embodiment of the tensile strength testing device for nitrile glove production of the present invention, wherein: the groove walls of the annular grooves of the lower half wheel and the upper half wheel are provided with air holes, the short shaft is hollow and the side wall is opened at the position of the air holes, and when the short shaft is inserted into the upper half wheel and the lower half wheel, the air holes are connected to the circular tube through the short shaft.

[0012] As a preferred embodiment of the tensile strength testing device for nitrile glove production of the present invention, wherein: a square key is provided on the peripheral wall of the short shaft parallel to its axial direction, and the square key is matched and inserted with the upper half wheel and the lower half wheel.

[0013] As a preferred embodiment of the tensile strength testing device for nitrile glove production of the present invention, wherein: the outer peripheral wall of the wheel-shaped part obtained by splicing the lower half wheel and the upper half wheel is provided with an annular assembly groove, and the cross-sectional profile of the assembly groove is an isosceles trapezoid, the cross-sectional profile of the arc-shaped blade is triangular, and the arc-shaped blade is inserted into the assembly groove.

[0014] As a preferred embodiment of the tensile strength testing device for nitrile glove production according to the present invention, wherein: the upper half wheel is fixedly connected to a cutter between two insertion holes, and the blade of the cutter is vertically upward.

[0015] The beneficial effects of the tensile strength testing device for nitrile glove production of the present invention are as follows: The lower and upper half wheels provided by the present invention can be combined and rotated to automatically cut test samples by rolling, and can also be separated to perform tensile tests on the samples. It can realize the effect of automatically sampling nitrile gloves and completing the tensile strength test of the samples, effectively solving the problem in the prior art that when manually cutting nitrile glove tensile strength test samples, the sample edges are easily rough, which leads to easy tearing of the sample test and inaccurate test results. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a tensile strength testing device used in the production of nitrile gloves.

[0018] Figure 2 for Figure 1 A structural diagram from another perspective.

[0019] Figure 3 This is a schematic diagram of the assembly structure of the lower half of the wheel.

[0020] Figure 4 This is a breakdown diagram of the assembly structure between the lower and upper halves of the wheel.

[0021] Figure 5 This is a sectional view of the assembly structure of the lower and upper halves of the wheel.

[0022] Figure 6 This is a sectional view of the assembly structure of the short shaft.

[0023] In the diagram: 100, upper half wheel; 1001, insertion hole; 101, lower half wheel; 102, short shaft; 1021, square key; 103, arc-shaped blade; 104, extrusion wheel; 1041, clearance groove; 105, hollow shaft motor; 106, round tube; 107, cylinder one; 108, cylinder two; 109, rotating seat one; 110, rotating seat two; 111, pulley; 112, pneumatic rotary joint; 113, metal filter cage; 114, air hole; 115, assembly groove; 116, ring; 117, cutting blade; 200, CNC lifting assembly; 201, slide table; 2011, adapter; 300, bracket. Detailed Implementation

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Example, refer to Figures 1-6 This embodiment provides a tensile strength testing device for the production of nitrile gloves, which can automatically sample nitrile gloves and complete the tensile strength testing of the samples.

[0026] refer to Figure 1 and 4 The present invention includes a lower half wheel 101 and an upper half wheel 100, which are assembled into a wheel shape. Rings 116 are respectively provided between the lower half wheel 101 and the upper half wheel 100 at the axis of the wheel shape, and they interlock with each other. (See reference...) Figure 5 A short shaft 102 is inserted between the rings 116 along the wheel-shaped axis. The outer arc walls of both the upper half-wheel 100 and the lower half-wheel 101 are inlaid with arc-shaped blades 103, which are spliced ​​together to form a circular ring 116. One end of the upper half-wheel 100 has a "V"-shaped insertion hole 1001. (Reference) Figure 1 and Figure 2 The CNC lifting assembly 200 has a slide 201 equipped with two cylinders 108. The piston rods of the two cylinders 108 are matched and inserted into two insertion holes 1001 for gripping the upper half wheel 100; Reference Figure 1 The extrusion roller 104 has its peripheral wall abutting against the blade of the arc-shaped blade 103, and the peripheral wall of the extrusion roller 104 is provided with a clearance groove 1041 along its axis; Reference Figure 2 , Figure 3 and Figure 6 The output shaft of the hollow shaft motor 105 is connected to the extrusion wheel 104 by belt drive at one end. The output shaft passes through a round tube 106. One end of the round tube 106 is fixedly connected to the short shaft 102, and the other end is connected to a cylinder 107 to control the movement of the short shaft 102.

[0027] For details, please refer to Figure 1The support frame 300 is shaped like an inverted "7". The linear guide rail, the housing of the CNC motor, the housing of the hollow shaft motor 105, and the housing of the cylinder 107 in the CNC lifting assembly 200 are fixedly connected to the support frame 300. The extrusion wheel 104 and the lower half wheel 101 are both rotatably connected to the support frame 300. (Reference) Figure 1 and Figure 4 The lower half wheel 101 extends tubularly towards the support 300 along the wheel-shaped axis obtained by splicing the lower half wheel 101 and the upper half wheel 100, and is rotatably connected to the support 300 via the tubular extension sleeve rotating seat 109; Reference Figure 1 and Figure 3 One end of the extrusion wheel 104 is shaft-connected to a rotating seat 110, and the shaft of the extrusion wheel 104 passes through one end of the rotating seat 110 and the output shaft of the hollow shaft motor 105, both of which are fixedly sleeved with pulleys 111. The two pulleys 111 are connected by a belt drive, and the ratio of the radii of the two pulleys 111 is equal to the radius of the arc of the curved blade 103 and the radius of the extrusion wheel 104; (Reference) Figure 1 and Figure 3 In the CNC lifting assembly 200, the lead screw is vertically arranged, and the ball nut is fixedly connected to the slider of the linear guide. Adapters 2011 are fixed on both sides of the ball nut to form a slide table 201. The housing of cylinder 108 is fixedly connected to the adapters 2011. (Reference) Figure 5 and Figure 6 A square key 1021 is provided on the peripheral wall of the short shaft 102 parallel to its axial direction. The square key 1021 is matched and inserted with the upper half wheel 100 and the lower half wheel 101. The wheel-shaped outer peripheral wall obtained by splicing the lower half wheel 101 and the upper half wheel 100 is formed by opening an assembly groove 115 in the shape of a ring 116. The cross-sectional profile of the assembly groove 115 is an isosceles trapezoid. The cross-sectional profile of the arc-shaped blade 103 is triangular. The arc-shaped blade 103 is inserted into the assembly groove 115.

[0028] The tensile strength testing device for nitrile gloves provided by this invention mainly provides a function for automatically sampling and testing nitrile gloves. The core of this function is a wheel-shaped structure composed of a lower half wheel 101 and an upper half wheel 100. By fitting the nitrile glove onto this wheel-shaped structure, the extrusion wheel 104 rolls and extrudes the arc-shaped blade 103, thereby taking a ring-shaped test sample 116 from the nitrile glove. Then, the CNC lifting assembly 200 pulls the upper half wheel 100 upward, thereby stretching the test sample fitted onto the lower half wheel 101 and the upper half wheel 100 until the test sample breaks. The corresponding test values ​​can be calculated by reading parameters such as the screw pitch, motor torque change, and motor output shaft rotation angle in the CNC lifting assembly 200.

[0029] To achieve the above-mentioned objectives, the present invention also relates to the following technical details: Firstly, the upper half-wheel 100 and the lower half-wheel 101 can both merge into a wheel-like structure and rotate around its axis, and can also separate to tensile test materials, as shown in the reference. Figure 4 and Figure 1 The upper half-wheel 100 and the lower half-wheel 101 have arc-shaped grooves and rings 116 machined along their axes on their mating surfaces. When the rings 116 are inserted into their corresponding grooves, and the rings 116 are connected in series using a short shaft 102, the lower half-wheel 101 and the upper half-wheel 100 are mated together, and their arc axes are coaxial with the short shaft 102. When the short shaft 102 rotates, it transmits torque synchronously to the upper half-wheel 101 and the lower half-wheel 100 through a square key 1021 on its outer wall. Therefore, the short shaft 102 is equivalent to a "lock core" between the upper half-wheel 100 and the lower half-wheel 101. When the short shaft 102 is pulled out of the rings 116 of the upper half-wheel 100 by the cylinder 107, the lower half-wheel 101 and the upper half-wheel 100 are unlocked, and the upper half-wheel 100 is allowed to rise. Conversely, the two are locked together and can rotate. In the machining process of the lower half wheel 101 and the upper half wheel 100, the mating surfaces of the two are machined first, and the groove of the sleeve ring 116 is deepened to avoid the lower half wheel 101 and the upper half wheel 100 failing to fit due to the ring 116 hitting the bottom of the groove. Secondly, the hole of the ring 116 should be precision machined while the lower half wheel 101 and the upper half wheel 100 are in close contact, and the outer circle formed by the lower half wheel 101 and the upper half wheel 100 should be precision machined, so that after the short shaft 102 is inserted into the ring 116, the lower half wheel 101 and the upper half wheel 100 form a wheel-shaped component with high dimensional accuracy. Secondly, the extrusion wheel 104 has a clearance groove 1041 on its peripheral wall, so that the extrusion wheel 104 does not come into contact with the arc-shaped blade 103 through the clearance groove 1041. This is to facilitate the fitting of the nitrile glove onto the lower half wheel 101 and the upper half wheel 100 through the clearance groove 1041. At the same time, the ratio of the diameter of the wheel obtained by splicing the lower half wheel 101 and the upper half wheel 100 to the diameter of the extrusion wheel 104 is an irrational number. This means that even though the extrusion wheel 104 has a clearance groove 1041, the part of the clearance groove 1041 can be gradually covered during the continuous rotation of the wheel obtained by splicing the lower half wheel 101 and the upper half wheel 100, thereby cutting out a complete ring 116-shaped test sample and causing the remaining part of the glove to fall off. Third, the lifting control of the upper half wheel 100 is mainly executed by the cylinders 108 fixed on both sides of the slide 201 of the lifting control component. When the two cylinders 108 are inserted into the upper half wheel 100 in a "V" shape, the degree of freedom of the upper half wheel 100 relative to the slide 201 of the lifting control component is reduced to zero. When the short shaft 102 is pulled out of the upper half wheel 100, the upper half wheel 100 can move up and down with the slide 201 of the lifting control component. Fourth, in addition to pushing and pulling the short shaft 102, the round tube 106 is also connected to the metal filter cage 113 through the short shaft 102 and the air hole 114, so that compressed air or negative pressure can act on the nitrile glove. When fixing the nitrile glove, the negative pressure plays a role in fixing and preventing it from falling off, shaping and maintaining the nitrile glove part between the arc-shaped blades 103 through adsorption. It plays a key auxiliary role in the subsequent rotary cutting of the nitrile glove sample. The cylinder 107 and the round tube 106 are connected through the pneumatic rotary joint 112, so that the round tube 106 can rotate with the hollow shaft motor 105 without affecting the cylinder 107's axial control of the round tube 106. Please refer to the structure. Figure 2 and Figures 5-6 A pneumatic rotary joint 112 is fitted between the piston rod of cylinder 107 and the round tube 106. The outer peripheral wall of the wheel-shaped part of the lower half wheel 101 and the upper half wheel 100 is grooved in the shape of an annular 116. The upper half wheel 100 and the lower half wheel 101 are respectively located in the groove and are fitted with metal filter cages 113. The arc-shaped blades 103 are symmetrically distributed on both sides of the metal filter cages 113. The groove walls of the annular 116 grooves of the lower half wheel 101 and the upper half wheel 100 are provided with air holes 114. The short shaft 102 is hollow and the side wall is opened at the position of the air holes 114. When the short shaft 102 is inserted into the upper half wheel 100 and the lower half wheel 101, the air holes 114 are connected to the round tube 106 through the short shaft 102. Fifth, since waste material is generated on both sides of the two sets of arc-shaped blades 103 when cutting nitrile gloves, the palm part of the nitrile glove located at the outer end will fall off by itself, while the part located near the bracket 300 will be fitted between the lower half wheel 101 and the upper half wheel 100. Therefore, by designing a larger chamfer on the side between the lower half wheel 101 and the upper half wheel 100, and fixing the cutter 117 vertically upward on the side of the upper half wheel 100 near the bracket 300, the chamfer will guide the waste material to the side of the bracket 300 when the upper half wheel 100 rises and tightens the waste material, so that the waste material slides onto the cutter 117 and is cut off, thereby causing the waste material to fall off the equipment.

[0030] In summary, the lower half wheel 101 and upper half wheel 100 provided by this invention can be combined and rotated to automatically cut test samples through rolling and cutting, and can also be separated to perform tensile tests on the samples. This can achieve the effect of automatically sampling nitrile gloves and completing the tensile strength test of the samples, effectively solving the problem in the prior art that when manually cutting nitrile glove tensile strength test samples, the sample edges are easily rough, which leads to easy tearing of the sample test and inaccurate test results.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A tensile strength testing device for the production of nitrile gloves, characterized in that, include: The lower half wheel (101) and the upper half wheel (100) are joined together to form a wheel shape. The lower half wheel (101) and the upper half wheel (100) are respectively provided with rings (116) at the wheel axis and fit together. The rings (116) are connected to a short shaft (102) along the wheel axis. The outer arc walls of the upper half wheel (100) and the lower half wheel (101) are inlaid with arc-shaped blades (103). The arc-shaped blades (103) are joined together to form a ring (116). One end of the upper half wheel (100) is arranged in a "V" shape and has a hole (1001). The extrusion wheel (104) has its peripheral wall abutting the blade of the arc-shaped blade (103), and the ratio of the diameter of the wheel obtained by splicing the lower half wheel (101) and the upper half wheel (100) to the diameter of the extrusion wheel (104) is an irrational number, and the peripheral wall of the extrusion wheel (104) is provided with a clearance groove (1041) along its axis. A hollow shaft motor (105) has one end of its output shaft connected to the extrusion wheel (104) via belt drive. Its output shaft passes through a round tube (106). One end of the round tube (106) is fixedly connected to a short shaft (102), and the other end is connected to a cylinder (107) for controlling the movement of the short shaft (102). The CNC lifting assembly (200) has a slide (201) with two cylinders (108) installed on it. The piston rods of the two cylinders (108) are matched and inserted into two sockets (1001) for gripping the upper half wheel (100).

2. The tensile strength testing device for nitrile glove production as described in claim 1, characterized in that: It also includes a bracket (300) in the shape of an inverted 7. The linear guide, the housing of the CNC motor, the housing of the hollow shaft motor (105), and the housing of the cylinder (107) in the CNC lifting assembly (200) are fixedly connected to the bracket (300). The extrusion wheel (104) and the lower half wheel (101) are rotatably connected to the bracket (300).

3. The tensile strength testing device for nitrile glove production as described in claim 2, characterized in that: The lower half wheel (101) extends in a tubular shape along the wheel-shaped axis obtained by splicing the lower half wheel (101) and the upper half wheel (100) towards the bracket (300), and is rotatably connected to the bracket (300) through the tubular extension sleeve rotating seat (109).

4. The tensile strength testing device for nitrile glove production as described in claim 2, characterized in that: One end of the extrusion wheel (104) is connected to a rotating seat (110), and the shaft of the extrusion wheel (104) passes through one end of the rotating seat (110) and the output shaft of the hollow shaft motor (105), both of which are fixedly sleeved with pulleys (111). The two pulleys (111) are connected by belt drive, and the ratio of the radii of the two pulleys (111) is equal to the radius of the arc of the arc blade (103) and the radius of the extrusion wheel (104).

5. The tensile strength testing device for nitrile glove production as described in claim 2, characterized in that: In the CNC lifting assembly (200), the lead screw is set vertically, and the ball nut is fixedly connected to the slider of the linear guide. The adapter (2011) is fixed on both sides of the ball nut to form a slide (201). The housing of the second cylinder (108) is fixedly connected to the adapter (2011).

6. The tensile strength testing device for nitrile glove production as described in claim 5, characterized in that: A pneumatic rotary joint (112) is fitted between the piston rod of the cylinder (107) and the round tube (106). The outer peripheral wall of the wheel-shaped part obtained by splicing the lower half wheel (101) and the upper half wheel (100) is grooved in the shape of a ring (116). The upper half wheel (100) and the lower half wheel (101) are respectively located in the groove and are fitted with metal filter cages (113). The arc-shaped blades (103) are symmetrically distributed on both sides of the metal filter cages (113).

7. The tensile strength testing device for nitrile glove production as described in claim 6, characterized in that: The lower half wheel (101) and the upper half wheel (100) have annular (116) grooves with air holes (114) on their groove walls. The short shaft (102) is hollow and has holes on its sidewalls corresponding to the positions of the air holes (114). When the short shaft (102) is inserted into the upper half wheel (100) and the lower half wheel (101), the air holes (114) are connected to the circular tube (106) through the short shaft (102).

8. The tensile strength testing device for nitrile glove production as described in claim 1, characterized in that: The peripheral wall of the short shaft (102) is provided with a square key (1021) parallel to its axial direction, and the square key (1021) is matched and plugged into the upper half wheel (100) and the lower half wheel (101).

9. The tensile strength testing device for nitrile glove production as described in claim 1, characterized in that: The outer peripheral wall of the wheel-shaped part obtained by splicing the lower half wheel (101) and the upper half wheel (100) is formed by opening an assembly groove (115) in the shape of a ring (116), and the cross-sectional profile of the assembly groove (115) is an isosceles trapezoid, the cross-sectional profile of the arc-shaped blade (103) is triangular, and the arc-shaped blade (103) is inserted into the assembly groove (115).

10. The tensile strength testing device for nitrile glove production as described in claim 1, characterized in that: The upper half wheel (100) is fixedly connected to a cutter (117) between two insertion holes (1001), and the blade of the cutter (117) is vertically upward.

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