A device for detecting adhesion defects between the polyurethane layer and the metal core of a polyurethane roller.

Abstract

The invention discloses a device for detecting the bonding defects between the polyurethane layer and the metal wheel core of a polyurethane roller, comprising: a guide sleeve hole is provided on a lower fixed plate; a ball guide sleeve is installed in the guide sleeve hole, a ball retaining frame is arranged in the ball guide sleeve, and a plurality of balls are arranged on the ball retaining frame; the lower end of the ball guide column is arranged in the ball retaining frame; a tray; a positioning core is arranged on the tray; the lower ends of two connecting rods are fixedly connected to the lower fixed plate, and the two connecting rods are perpendicular to the lower fixed plate; an upper fixed plate; a dial indicator is arranged on the upper fixed plate; a swing rod is connected to the upper fixed plate through a first pin shaft, and the swing rod is arranged below the upper fixed plate; two ends of the swing rod are respectively connected with detection devices, and the detection devices include: a bracket, a detection wheel, a second pin shaft and a C-shaped retaining ring; wherein the two detection devices are arranged above the polyurethane roller. The invention can detect the failure phenomenon of the bonding between the polyurethane layer and the metal on the end face of the polyurethane roller.

Description

Technical Field

[0001] The invention relates to the technical field of a device for detecting bonding defects between a polyurethane layer and a metal wheel core of a polyurethane roller, and in particular to a device for detecting bonding defects between a polyurethane layer and a metal wheel core of a polyurethane roller. Background Art

[0002] Polyurethane rollers are generally made by coating adhesive on the outer surface of a cylindrical metal wheel core and then pouring polyurethane raw materials on the outer surface of the metal wheel core. During the production process, when the wheel core coated with adhesive is placed on a container, the adhesive dry film on the edge of the outer surface of the wheel core is easily damaged, which will cause the polyurethane layer on the end face of the manufactured polyurethane roller to fail to bond with the metal. In addition, in order to remove the polyurethane roller from the mold after it is manufactured, a release agent needs to be applied to the mold cavity before the metal wheel core is placed in the mold. The amount of release agent applied is not easy to accurately control. When the release agent is excessive, it is easy to cause poor bonding on the outer edge of the wheel core on one side that contacts the bottom of the mold cavity. When a polyurethane roller has the above-mentioned bonding defects, such defective products cannot be detected by appearance. During the use of such defective products, the area of ​​the polyurethane layer and the metal wheel core that fails to bond will gradually expand until the polyurethane layer completely falls off the surface of the metal wheel core, which may have serious consequences. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a device for detecting adhesion defects between a polyurethane layer and a metal wheel core of a polyurethane roller.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A device for detecting bonding defects between a polyurethane layer and a metal wheel core of a polyurethane roller, comprising:

[0006] A lower fixing plate, the lower fixing plate is horizontally arranged, and a guide sleeve hole is provided on the lower fixing plate;

[0007] A ball guide sleeve and a ball retainer, wherein the ball guide sleeve is installed in the guide sleeve hole, the ball retainer is arranged in the ball guide sleeve, and a plurality of balls are arranged on the ball retainer;

[0008] A ball guide post, the lower end of which is disposed in the ball retainer;

[0009] A tray, the tray is fixedly connected to the upper end of the ball guide column, and a round hole is formed on the tray;

[0010] A positioning core, at least a portion of which is installed in the circular hole, the positioning core is installed on the tray, the polyurethane roller is installed on the tray, and the hole in the middle of the polyurethane roller matches the positioning core;

[0011] Two connecting rods, the lower ends of the two connecting rods are fixedly connected to the lower fixing plate, and the two connecting rods are perpendicular to the lower fixing plate;

[0012] An upper fixing plate, two ends of which are respectively connected to the upper ends of the two connecting rods, and the upper fixing plate and the lower fixing plate are arranged horizontally;

[0013] A dial indicator, the dial indicator is mounted on the upper fixed plate;

[0014] A swing rod and a first pin, wherein the swing rod is connected to the upper fixing plate through the first pin, the swing rod is arranged below the upper fixing plate, and a plurality of mounting grooves are formed on the lower surface of the swing rod;

[0015] Two detection devices, the upper ends of the two detection devices are respectively matched with one of the mounting grooves, the two detection devices are symmetrically arranged about the first pin shaft, the two detection devices are both arranged at the lower end of the swing rod, each of the detection devices comprises: a bracket, a detection wheel, a second pin shaft and a C-shaped retaining ring, and each of the second pin shafts passes through one of the brackets, the detection wheel and the C-shaped retaining ring;

[0016] Wherein, the two detection devices are arranged above the polyurethane roller.

[0017] The above-mentioned polyurethane roller's polyurethane layer and metal wheel core bonding defect detection device further includes: two first gaskets and two first screws, each of the first screws passes through a first gasket, and the two first screws are respectively connected to one end of the connecting rod and the upper fixed plate.

[0018] The above-mentioned device for detecting defects in bonding between the polyurethane layer and the metal wheel core of the polyurethane roller further includes: a set screw, a screw hole is also provided on the upper fixing plate, an internal thread is provided on the screw hole, the set screw and the screw hole cooperate with each other, the screw hole and the dial indicator installation position are connected, and the set screw presses the dial indicator.

[0019] The above-mentioned device for detecting defects in bonding between the polyurethane layer and the metal wheel core of the polyurethane roller further includes: two second screws, each of which connects the detection device and one end of the rocker.

[0020] The above-mentioned polyurethane roller's polyurethane layer and metal wheel core bonding defect detection device further includes: a plurality of third screws, wherein the plurality of the third screws connect the positioning core and the tray, and the plurality of the third screws are arranged in a circular array with the ball guide column as the axis.

[0021] The polyurethane layer of the polyurethane roller and the bonding defect detection device for the metal wheel core further includes: a plurality of fourth screws, and the plurality of fourth screws connect the upper end of the ball guide post and the tray, and the plurality of fourth screws are arranged in a circumferential array with the ball guide post as the axis.

[0022] The polyurethane layer of the polyurethane roller and the bonding defect detection device for the metal wheel core further includes: a plurality of fifth screws, and the plurality of fifth screws connect the upper end of the ball guide sleeve and the lower fixing plate, and the plurality of fifth screws are arranged in a circumferential array with the ball guide post as the axis.

[0023] The polyurethane layer of the polyurethane roller and the bonding defect detection device for the metal wheel core further includes: two second gaskets and two sixth screws, each of the sixth screws penetrates through one of the second gaskets, the lower fixing plate is rectangular, the sixth screws are all installed on the lower surface of the lower fixing plate, and the sixth screws connect the lower fixing plate and the connecting rod.

[0024] In the bonding defect detection device for the polyurethane layer of the polyurethane roller and the metal wheel core, the bracket is in a "C" shape, one end of the bracket opposite to the open end abuts against the lower surface of the swing rod, the second pin shaft is horizontally arranged, the detection wheel is arranged in the bracket, the second pin shaft sequentially penetrates through one side of the bracket, the detection wheel and the other side of the bracket, the C-shaped retaining ring is installed at one end of the second pin shaft, the C-shaped retaining ring abuts against the other side of the bracket, and the C-shaped retaining ring and the second pin shaft lock the detection wheel.

[0025] Due to the adoption of the above technology, the positive effects of the present invention compared with the prior art are:

[0026] The present invention can detect the bonding failure phenomenon between the polyurethane layer on the end face of the polyurethane roller and the metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an exploded schematic view of the bonding defect detection device for the polyurethane layer of the polyurethane roller and the metal wheel core of the present invention.

[0028] Figure 2 is a schematic assembly view of the bonding defect detection device for the polyurethane layer of the polyurethane roller and the metal wheel core of the present invention.

[0029] Figure 3 is an isometric schematic view of the bonding defect detection device for the polyurethane layer of the polyurethane roller and the metal wheel core of the present invention.

[0030] Figure 4 is a schematic sectional view of the bonding defect detection device for the polyurethane layer of the polyurethane roller and the metal wheel core of the present invention.

[0031] In the attached drawings: 1. first screw; 2. dial indicator; 3. first gasket; 4. upper fixing plate; 5. set screw; 6. connecting rod; 7. first pin; 8. second screw; 9. rocker arm; 10. second pin; 11. bracket; 12. detection wheel; 13. C-type retaining ring; 14. polyurethane roller; 15. third screw; 16. fourth screw; 17. tray; 18. ball guide column; 19. fifth screw; 20. ball; 21. ball retainer; 22. ball guide sleeve; 23. lower fixing plate; 24. second gasket; 25. sixth screw; 26. positioning core. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention. Figure 1 It is an exploded schematic diagram of a device for detecting bonding defects between a polyurethane layer and a metal wheel core of a polyurethane roller of the present invention; Figure 2 It is a schematic diagram of assembling a device for detecting bonding defects between a polyurethane layer of a polyurethane roller and a metal wheel core of the present invention; Figure 3 It is an isometric schematic diagram of a device for detecting adhesion defects between a polyurethane layer and a metal wheel core of a polyurethane roller of the present invention; Figure 4 is a schematic diagram of a cross section of a device for detecting bonding defects between a polyurethane layer and a metal wheel core of a polyurethane roller of the present invention, see Figures 1 to 4 As shown, a device for detecting adhesion defects between a polyurethane layer and a metal wheel core of a polyurethane roller according to a preferred embodiment is shown, comprising:

[0033] A lower fixing plate 23, which is horizontally arranged and has a guide sleeve hole;

[0034] A ball guide sleeve 22 and a ball retainer 21, wherein the ball guide sleeve 22 is installed in the guide sleeve hole, the ball retainer 21 is arranged in the ball guide sleeve 22, and a plurality of balls 20 are arranged on the ball retainer 21;

[0035] A ball guide post 18, the lower end of which is disposed in a ball retainer 21;

[0036] The tray 17 is fixedly connected to the upper end of the ball guide column 18, and a round hole is formed on the tray 17;

[0037] A positioning core 26, at least a portion of which is installed in the circular hole, the positioning core 26 is installed on the tray 17, the polyurethane roller 14 is installed on the tray, and the hole in the middle of the polyurethane roller 14 matches the positioning core 26;

[0038] Two connecting rods 6, the lower ends of the two connecting rods 6 are fixedly connected to the lower fixing plate 23, and the two connecting rods 6 are perpendicular to the lower fixing plate 23;

[0039] An upper fixing plate 4, both ends of which are respectively connected to the upper ends of two connecting rods 6, and the upper fixing plate 4 and the lower fixing plate 23 are arranged horizontally;

[0040] Dial gauge 2, which is mounted on the upper fixed plate 4;

[0041] The swing rod 9 and the first pin 7 are connected to the upper fixing plate 4 through the first pin 7. The swing rod 9 is arranged below the upper fixing plate 4. A plurality of mounting grooves are provided on the lower surface of the swing rod 9.

[0042] Two detection devices, the upper ends of the two detection devices are respectively matched with a mounting groove, the two detection devices are symmetrically arranged about the first pin shaft 7, and the two detection devices are both arranged at the lower end of the swing rod 9. Each detection device includes: a bracket 11, a detection wheel 12, a second pin shaft 10 and a C-shaped retaining ring 13, and each second pin shaft 10 passes through a bracket 11, a detection wheel 12 and a C-shaped retaining ring 13;

[0043] The two detection devices are arranged above the polyurethane roller 14 .

[0044] In a preferred embodiment, the rocker rod 9 with different structures and shapes can be selected according to different usage scenarios.

[0045] In a preferred embodiment, it further includes: two first washers 3 and two first screws 1, each first screw 1 passes through a first washer 3, and the two first screws 1 are respectively connected to a connecting rod 6 and one end of the upper fixing plate 4.

[0046] In a preferred embodiment, it also includes: a set screw 5, a screw hole is also opened on the upper fixing plate 4, the screw hole is opened with an internal thread, the set screw 5 and the screw hole match, the screw hole and the installation position of the dial indicator 2 are connected, and the set screw 5 presses the dial indicator 2.

[0047] In a preferred embodiment, it further comprises: two second screws 8 , each second screw 8 is connected to a detection device and one end of the swing rod 9 .

[0048] In a preferred embodiment, it further comprises: a plurality of third screws 15 , the plurality of third screws 15 connecting the positioning core 26 and the tray 17 , and the plurality of third screws 15 are arranged in a circular array with the ball guide column 18 as the axis.

[0049] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention.

[0050] The present invention also has the following implementation modes based on the above:

[0051] In a further embodiment of the present invention, it further includes: a plurality of fourth screws 16, the plurality of fourth screws 16 connect the upper end of the ball guide post 18 and the tray 17, and the plurality of fourth screws 16 are arranged in a circumferential array with the ball guide post 18 as the axis.

[0052] In a further embodiment of the present invention, it further includes: a plurality of fifth screws 19, the plurality of fifth screws 19 connect the upper end of the ball guide sleeve 22 and the lower fixing plate 23, and the plurality of fifth screws 19 are arranged in a circumferential array with the ball guide post 18 as the axis.

[0053] In a further embodiment of the present invention, it further includes: two second gaskets 24 and two sixth screws 25, each sixth screw 25 passes through a second gasket 24, the lower fixing plate 23 is rectangular, the sixth screws 25 are all installed on the lower surface of the lower fixing plate 23, and the sixth screws 25 connect the lower fixing plate 23 and the connecting rod 6.

[0054] In a further embodiment of the present invention, the bracket 11 is in a "C" shape, one end of the bracket 11 opposite to the open end abuts against the lower surface of the swing rod 9, the second pin shaft 10 is horizontally arranged, the detection wheel 12 is arranged inside the bracket 11, the second pin shaft 10 sequentially passes through one side of the bracket 11, the detection wheel 12 and the other side of the bracket 11, and the C-shaped retaining ring 13 is installed at one end of the second pin shaft 10, the C-shaped retaining ring 13 abuts against the other side of the bracket 11, and the C-shaped retaining ring 13 and the second pin shaft 10 lock the detection wheel 12.

[0055] In a further embodiment of the present invention, it further includes a method for detecting the bonding defect between the polyurethane layer and the metal wheel core of a polyurethane roller, including the following steps:

[0056] Step S1: A cylinder is arranged below the ball guide post 18.

[0057] Step S2: The polyurethane roller 14 is placed on the tray 17, and the hole in the middle of the polyurethane roller 14 is sleeved on the positioning core 26.

[0058] Step S3: Compressed air is turned on, and the piston rod of the cylinder pushes the ball guide post 18 to move upward. The ball guide post 18 drives the tray 17 and the polyurethane roller 14 to move upward together until the side of the polyurethane layer of the polyurethane roller 14 is pressed against the measuring wheel. When the axial width of the polyurethane roller 14 is different, the upward movement stroke of the tray 17 is also different.

[0059] Step S4: Manually rotate the polyurethane roller 14. When the bonding failure part between the polyurethane layer on the side of the polyurethane roller 14 and the metal wheel core rotates to the position of the detection wheel 12, the measuring wheel will move downward by a certain amplitude, and drive the swing rod 9 to swing by a certain amplitude, and the pointer of the dial indicator 2 will swing by a certain amplitude. By observing the swing amplitude of the pointer of the dial indicator 2, it can be detected whether there is a bonding failure phenomenon between the polyurethane layer on the end face of the polyurethane roller 14 and the metal wheel core.

[0060] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting adhesion defects between a polyurethane layer and a metal wheel core of a polyurethane roller, characterized in that: include: A lower fixing plate, the lower fixing plate is horizontally arranged, and a guide sleeve hole is provided on the lower fixing plate; A ball guide sleeve and a ball retainer, wherein the ball guide sleeve is installed in the guide sleeve hole, the ball retainer is arranged in the ball guide sleeve, and a plurality of balls are arranged on the ball retainer; A ball guide post, the lower end of which is disposed in the ball retainer; A tray, the tray is fixedly connected to the upper end of the ball guide column, and a round hole is formed on the tray; A positioning core, at least a portion of which is installed in the circular hole, the positioning core is installed on the tray, the polyurethane roller is installed on the tray, and the hole in the middle of the polyurethane roller matches the positioning core; Two connecting rods, the lower ends of the two connecting rods are fixedly connected to the lower fixing plate, and the two connecting rods are perpendicular to the lower fixing plate; An upper fixing plate, two ends of which are respectively connected to the upper ends of the two connecting rods, and the upper fixing plate and the lower fixing plate are arranged horizontally; A dial indicator, the dial indicator is mounted on the upper fixed plate; A swing rod and a first pin, wherein the swing rod is connected to the upper fixing plate through the first pin, the swing rod is arranged below the upper fixing plate, and a plurality of mounting grooves are formed on the lower surface of the swing rod; Two detection devices, the upper ends of the two detection devices are respectively matched with one of the mounting grooves, the two detection devices are symmetrically arranged about the first pin shaft, the two detection devices are both arranged at the lower end of the swing rod, each of the detection devices comprises: a bracket, a detection wheel, a second pin shaft and a C-shaped retaining ring, and each of the second pin shafts passes through one of the brackets, the detection wheel and the C-shaped retaining ring; Wherein, the two detection devices are arranged above the polyurethane roller; The measuring head of the dial indicator is in contact with one end of the swing rod.

2. The device for detecting adhesion defects between the polyurethane layer and the metal wheel core of the polyurethane roller according to claim 1, characterized in that: Also includes: Two first washers and two first screws, each of the first screws penetrates one of the first washers, and the two first screws are respectively connected to one of the connecting rods and one end of the upper fixing plate.

3. The device for detecting adhesion defects between the polyurethane layer and the metal wheel core of the polyurethane roller according to claim 1, characterized in that: Also includes: A set screw, a screw hole is also provided on the upper fixing plate, an internal thread is provided on the screw hole, the set screw and the screw hole cooperate with each other, the screw hole and the dial indicator installation position are connected, and the set screw presses the dial indicator.

4. The device for detecting adhesion defects between the polyurethane layer and the metal wheel core of the polyurethane roller according to claim 1, characterized in that: Also includes: Two second screws, each of which connects the detection device and one end of the swing rod.

5. The device for detecting adhesion defects between the polyurethane layer and the metal wheel core of the polyurethane roller according to claim 1, characterized in that: Also includes: A plurality of third screws are provided, wherein the plurality of third screws connect the positioning core and the tray, and the plurality of third screws are arranged in a circular array with the ball guide column as the axis.

6. The device for detecting adhesion defects between the polyurethane layer and the metal wheel core of the polyurethane roller according to claim 1, characterized in that: Also includes: A plurality of fourth screws are provided, wherein the plurality of fourth screws connect the upper end of the ball guide post and the tray, and the plurality of fourth screws are arranged in a circular array with the ball guide post as the axis.

7. The device for detecting adhesion defects between the polyurethane layer and the metal wheel core of the polyurethane roller according to claim 1, characterized in that: Also includes: A plurality of fifth screws are provided, wherein the plurality of fifth screws are connected to the upper end of the ball guide sleeve and the lower fixing plate, and the plurality of fifth screws are arranged in a circular array with the ball guide column as the axis.

8. The device for detecting adhesion defects between the polyurethane layer and the metal wheel core of the polyurethane roller according to claim 1, characterized in that: Also includes: Two second gaskets and two sixth screws, each of the sixth screws passing through one of the second gaskets, the lower fixing plate being rectangular, the sixth screws being all mounted on the lower surface of the lower fixing plate, and the sixth screws connecting the lower fixing plate and the connecting rod.

9. The device for detecting adhesion defects between the polyurethane layer and the metal wheel core of the polyurethane roller according to claim 1, characterized in that: The bracket is in a "C" shape, one end of the bracket opposite to the open end abuts against the lower surface of the swing rod, the second pin shaft is horizontally arranged, the detection wheel is arranged inside the bracket, the second pin shaft sequentially passes through one side of the bracket, the detection wheel and the other side of the bracket, the C-shaped retaining ring is mounted on one end of the second pin shaft, the C-shaped retaining ring abuts against the other side of the bracket, and the C-shaped retaining ring and the second pin shaft lock the detection wheel.

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