Feeding device and glass edge grinding machine using the same

Abstract

The present invention discloses a feeding device and a glass edge grinding machine using the feeding device. The glass edge grinding machine includes a grinding device and a feeding device; the grinding device includes a grinding head and a grinding motor, the grinding head is fixedly connected to the output shaft of the grinding motor, and the grinding device is fixedly installed on the feeding device. The feeding device includes: a base, an upper cover, a screw shaft, a compensation cylinder, a brake assembly and an elastic member; the base and the upper cover are slidably connected; the compensation cylinder includes a cylinder body and a piston rod, and the piston rod is airtightly slidably connected to the cylinder body; the screw shaft is provided with a screw part, the cylinder body is connected to the upper cover, the piston rod is rotatably connected to the screw shaft, and the screw part is threadedly connected to the base; the brake assembly is used to fix the piston rod relative to the cylinder body. The present invention has a compact structure and reliable operation, and is suitable for use in automated mass production. The present invention can be applied to processing equipment.

Description

Technical Field

[0001] The invention relates to the field of processing equipment, in particular to glass processing and production equipment. Background Art

[0002] In order to meet various requirements for the use of glass, it is often necessary to polish and edge grind the glass. At present, the more mature production method is to use a double-sided edge grinder to grind the straight edge of the glass. In the process of glass edge grinding, the glass is generally transported to the workbench piece by piece, and the grinding heads installed on both sides of the workbench rotate continuously to grind the conveyed glass. Since the grinding head itself is slightly abraded due to friction while grinding the glass, the wear of the grinding head increases after a period of use, thereby affecting the grinding quality of the glass. For this reason, the operator needs to manually adjust the position of the grinding head and perform manual compensation, but this compensation method is inefficient and inaccurate, resulting in unstable grinding quality of the glass.

[0003] In order to overcome the above problems, in the prior art, edge grinding machines are installed on pneumatic feeding devices so that the wear of the grinding head can be automatically compensated. However, these feeding devices are generally complex in structure, low in efficiency, poor in automation and adaptability, making the edge grinding effect of edge grinding machines unsatisfactory. Summary of the invention

[0004] The object of the present invention is to provide a feeding device to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The technical solutions adopted to solve the above technical problems are:

[0006] First, a feeding device includes: a base, an upper cover, a screw shaft, a compensation cylinder, a brake assembly and an elastic member;

[0007] The base and the upper cover are slidably connected;

[0008] The compensating cylinder comprises a cylinder body and a piston rod, and the piston rod is slidably connected to the cylinder body;

[0009] The cylinder body is fixedly connected to the upper cover, the screw shaft is fixedly connected to the base, and the piston rod is rotatably connected to the screw shaft;

[0010] The brake assembly is in braking connection with the cylinder body.

[0011] The beneficial effects of the present invention are: the compensating cylinder is driven by air pressure, so that the upper cover can be subjected to continuous forward thrust within the stroke of the compensating cylinder, thereby realizing instant automatic compensatory feeding; the piston rod and cylinder body of the compensating cylinder can be locked and braked at any time through the brake assembly, thereby facilitating automatic control.

[0012] As a further improvement of the above technical solution, the screw shaft is provided with a screw part, which is threadedly connected to the base; a rotating handle is provided at the rear end of the screw shaft, and the rotating handle is fixedly connected to the screw shaft. The relative position of the upper cover and the base can be manually adjusted by rotating the screw shaft, so that the feeding device can be integrated with manual and automatic, and the practicality is enhanced; when manually adjusting the screw shaft, it is more accurate and labor-saving by rotating the end handle.

[0013] As a further improvement of the above technical solution, the brake assembly includes a housing, a brake assembly and a piston push rod; the housing is fixedly connected to the cylinder body, a brake block cavity and a push rod cavity are provided in the housing, the brake assembly is slidably sleeved in the brake block cavity, the brake assembly is fixedly connected to the piston rod, and the piston push rod is airtightly slidably sleeved in the push rod cavity. The brake assembly is fixedly connected to the housing through the piston push rod, so that the piston rod and the cylinder body can achieve locking braking, and the screw shaft and the compensation cylinder are axially synchronized; so that the upper cover can maintain its position without being pushed by the cylinder or external force.

[0014] As a further improvement of the above technical solution, the brake assembly is cylindrical, the brake assembly is sleeved in the housing, the brake assembly includes a tension sleeve and a center positioning sleeve, the front and rear ends of the center positioning sleeve are provided with ribs, the tension sleeve is clamped between the two ribs of the center positioning sleeve, the tension sleeve is provided with an open slot, the piston push rod is arranged along the radial direction of the brake assembly, the piston push rod is provided with a wedge-shaped protrusion, and the protrusion is directly opposite to the open slot. The piston push rod is driven by air pressure to push the tension sleeve open and deform to lock the housing, so that the braking action is simple to control, the braking of the brake assembly and the housing is reliable, and it is not easy to move.

[0015] As a further improvement of the above technical solution, the tension sleeve includes two semicircular brake pieces, the opening slot is arranged between the edges of the two semicircular brake pieces, and the two inclined surfaces of the protruding portion correspond to the edges of the two semicircular brake pieces respectively. The tension sleeve is composed of two parts, so that the piston push rod is easier to push it open from the opening slot, the friction between the brake assembly and the housing is greater when the brake is locked, and the braking action is more reliable.

[0016] As a further improvement of the above technical solution, a spring is provided between the piston push rod and the housing, and the spring enables the piston push rod to move toward the brake assembly along the push rod cavity. When no air pressure is introduced into the push rod cavity of the brake assembly, the piston push rod is acted upon by the elastic force of the spring to lock the brake assembly and the housing, thereby preventing the feeding from being affected by insufficient air pressure or temporary supply failure.

[0017] As a further improvement of the above technical solution, the housing is provided with a top screw hole, and the top screw hole connects the outer side of the housing with the brake block cavity. The brake assembly is tightened in the housing by locking the machine screw into the top screw hole, so that the compensation cylinder is in a locked braking state, so that the feeding device can be used both manually and automatically.

[0018] As a further improvement of the above technical solution, the screw shaft passes through the compensation cylinder and the brake assembly, the screw shaft sleeve is arranged in the piston rod, and the piston rod and the brake assembly are both rotatably connected with the screw shaft. The screw shaft is inserted into the compensation cylinder and the brake assembly, so that the structure of the feeding device is more compact and the connection of each part is more direct and reliable.

[0019] As a further improvement of the above technical solution, a spring is further included, the front end of the screw shaft is provided with a spring blocking portion, the upper cover is provided with a spring stopper, and the elastic member is arranged between the spring blocking portion and the spring stopper. The elastic force of the elastic member offsets part of the forward thrust of the compensation cylinder to prevent the compensation cylinder from having an excessive thrust, thereby increasing the applicable air pressure range of the compensation cylinder and facilitating use.

[0020] Next, the present invention also provides a glass edge grinding machine, including a grinding device and the above-mentioned feeding device; the grinding device includes a grinding head and a grinding motor, the grinding head is fixedly connected to the output shaft of the grinding motor, and the grinding device is fixedly connected to the upper cover of the feeding device.

[0021] The beneficial effects of the present invention are as follows: the edge grinding machine installs the grinding device on the upper cover of the feeding device, so that the grinding device is subjected to continuous thrust during the grinding process to achieve instant automatic compensation feeding, eliminating the influence of the grinding head's own abrasion on the grinding effect; the axial pneumatic feed is locked and braked at any time through the braking component, which facilitates the automated production; the front and rear positions of the grinding device are manually adjusted through the screw shaft, and the edge grinding machine is more practical and applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0023] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the glass edge grinding machine provided by the present invention;

[0024] Figure 2 It is a three-dimensional schematic diagram of an embodiment of the feeding device provided by the present invention;

[0025] Figure 3 It is a three-dimensional schematic diagram of an embodiment of the feeding device provided by the present invention;

[0026] Figure 4is a top cross-sectional view of an embodiment of the feeding device provided by the present invention;

[0027] Figure 5 yes Figure 4 A partial enlarged view of

[0028] Figure 6 It is a three-dimensional schematic diagram of the brake assembly provided by the present invention.

[0029] 100, base, 200, upper cover, 300, screw shaft, 400, compensation cylinder, 500, brake assembly, 600, spring, 700, grinding device, 210, spring stopper, 310, screw part, 320, rotating handle, 330, spring blocking part, 410, cylinder body, 420, piston rod, 510, shell, 520, brake assembly, 530, piston push rod, 710, grinding head, 720, grinding motor, 511, brake block cavity, 512, push rod cavity, 513, push screw screw hole, 521, tensioning sleeve, 522, center positioning sleeve, 523, opening slot, 531, protrusion. DETAILED DESCRIPTION

[0030] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Reference Figures 1 to 6 The glass edge grinding machine of the present invention is implemented as follows:

[0035] A glass edge grinding machine comprises a grinding device 700 and a feeding device.

[0036] The grinding device 700 includes a grinding head 710 and a grinding motor 720 . The grinding head 710 is in the shape of a circular disk. The grinding motor 720 is installed forwardly above the feeding device. The grinding head 710 is fixedly connected to an output shaft at the front end of the grinding motor 720 .

[0037] The feeding device comprises a base 100, an upper cover 200 and a screw shaft 300. The base 100 is in a rectangular parallelepiped shape, and the upper cover 200 is slidably mounted on the top of the base 100 through linear slide rails on both sides, and the upper cover 200 can slide relative to the base 100 in the front-to-back direction. The screw shaft 300 is provided with a screw part 310, and the screw shaft 300 is threadedly connected to the base 100 through the screw part 310; a disc-shaped spring 600 blocking part is provided at the front end of the screw shaft 300, and a spring 600 block is fixedly connected to the bottom of the upper cover 200, and the spring 600 block is sleeved outside the screw shaft 300, and an elastic member is provided between the spring 600 blocking part and the spring 600 block, and the elastic member is a spring 600 sleeved on the front end of the screw shaft 300.

[0038] The upper cover 200 is provided with a compensating cylinder 400 at the rear end; the compensating cylinder 400 includes a cylinder body 410 and a piston rod 420. The cylinder body 410 is fixedly connected to the upper cover 200, the middle part of the piston rod 420 is a cylindrical piston that matches the inner cavity of the cylinder body 410, and the front and rear sides of the piston are provided with cylindrical piston shaft rods; the piston rod 420 is airtightly slidably sleeved in the cylinder body 410, and the piston rod 420 and the cylinder body 410 form a dynamic seal.

[0039] A brake assembly 500 is disposed at the rear of the compensation cylinder 400; the brake assembly 500 comprises a housing 510, a brake assembly 520 and a piston push rod 530. The housing 510 is fixedly connected to the cylinder body 410, and a cylindrical brake block cavity 511 is disposed in the housing 510 along the axial direction of the piston rod 420, and a cylindrical push rod cavity 512 is disposed at the left part of the housing 510 and radially disposed along the brake block cavity 511; the housing 510 is also provided with a top screw hole 513, and the top screw hole 513 connects the outer side of the housing 510 with the brake block cavity 511. The brake assembly 520 is cylindrical, and the brake assembly 520 is slidably sleeved in the brake block cavity 511, and the front end of the brake assembly 520 abuts against the rear end of the piston rod 420. The brake assembly 520 includes a tension sleeve 521 and a center positioning sleeve 522. The center positioning sleeve 522 is provided with disc-shaped ribs at the front and rear ends. The tension sleeve 521 is annular and cylindrical, and is clamped between the two ribs of the center positioning sleeve 522. The tension sleeve 521 is composed of two semicircular brake pieces, and an open slot 523 is provided between the two semicircular brake pieces. The open slot 523 is arranged to the left side and is opposite to the push rod cavity 512. The piston push rod 530 is airtightly slidably connected to the push rod cavity 512, and a wedge-shaped protrusion 531 is provided on the right side thereof. A spring 600 is provided between the left side thereof and the inner wall of the housing 510, and the protrusion 531 is directly opposite to the open slot 523.

[0040] The screw shaft 300 passes through the compensation cylinder 400 and the brake assembly 500. The rear end of the piston rod 420 abuts against the front end of the brake assembly 520. The front end of the piston rod 420 and the rear end of the brake assembly 520 are both provided with bearings. The brake assembly 520 and the piston rod 420 are rotatably sleeved on the outside of the screw shaft 300. The screw shaft 300, the piston rod 420 and the brake assembly 520 are axially synchronized through the shaft shoulder provided in front of the piston rod 420, the shaft sleeve provided behind the brake assembly 520, and the bearing. A rotating handle 320 is also fixedly installed at the rear end of the screw shaft 300.

[0041] Reference Figures 1 to 6 When the glass edge grinding machine provided by the present invention is used to grind and polish the glass:

[0042] First, the glass to be polished needs to be fed continuously, and the glass edge grinding machine needs to be placed on the side of the edge of the glass so that the grinding head 710 is facing the feeding trajectory of the part of the glass that needs to be edged, and is within the active stroke of the compensation cylinder 400, and the grinding motor 720 is started to drive the grinding head 710 to rotate at high speed.

[0043] The glass is continuously fed in front of the grinding head 710. When the grinding edge of the glass enters more than half of the range of the grinding head 710, the piston rod 420 and the cylinder body 410 are driven by air pressure through the control of the solenoid valve. The cylinder body 410 moves forward relative to the piston rod 420, so that the upper cover 200 fixedly connected thereto moves forward with the grinding device 700 until the grinding head 710 is against the grinding part. Due to the setting of the elastic member, the upper cover 200 will be subjected to the backward elastic force of the spring 600, so that the forward movement of the upper cover 200 under the action of the compensation cylinder 400 is buffered, and the driving air pressure of the compensation cylinder 400 can also have a larger application range, avoiding accelerated wear of the grinding head 710 due to excessive driving air pressure. At the same time, due to the continuous supply of air pressure, the compensation cylinder 400 continuously outputs, and the grinding head 710 is continuously pushed forward. During the process of grinding the glass by the grinding head 710, the grinding head 710 itself is also eroded by friction. However, due to the continuous thrust of the compensation cylinder 400, the grinding head 710 always presses against the grinding edge for grinding. The erosion will be compensated by the feeding device in real time, so that the grinding effect of each part of the glass is uniform.

[0044] During the grinding process, multiple pieces of glass are continuously fed. Since there is a certain distance between the front and rear pieces of glass, when the gap between the two pieces of glass moves to the grinding head 710, the grinding head 710 cannot continue to press forward. Therefore, when the grinding edge of the glass being edged leaves more than half of the range of the grinding head 710, the piston push rod 530 in the brake assembly 500 moves toward the brake assembly 520 along the push rod cavity 512 under the control of the solenoid valve, and the wedge-shaped protrusion 531 of the piston push rod 530 is inserted into the open slot 523. The two inclined surfaces of the protrusion 531 make the two semicircular brake pieces of the tension sleeve 521 expand outward, and the outer surfaces of the two semicircular brake pieces are tightly pressed against the inner surface of the housing 510. The friction between the two is greater than the thrust of the compensation cylinder 400, similar to the drum brake of an automobile. The semicircular brake piece makes the brake assembly 520 and the housing 510 tightly pressed together, and the two cannot produce relative movement. Since the brake assembly 520 is in contact with both ends of the center positioning sleeve 522, when the brake assembly 520 is stationary relative to the housing 510, the piston rod 420 fixed to the center positioning sleeve 522 also remains stationary relative to the cylinder body 410, ultimately achieving the axial relative stillness of the grinding head 710.

[0045] The grinding device 700 will also maintain its position until the glass that has been ground leaves the range of the grinding head 710. When the grinding edge of the next piece of glass enters more than half of the range of the grinding head 710, the piston push rod 530 is controlled by the solenoid valve to retreat due to the change in air pressure, and its protrusion 531 exits the open slot 523. The tensioning sleeve 521 recovers from deformation and no longer locks the shell 510. The piston rod 420 continues to be pressed forward by the air pressure, so that the grinding head 710 continues to be pressed and ground.

[0046] If the air pressure at the piston push rod 530 is released, the piston push rod 530 will lock the brake assembly 520 and the housing 510 under the elastic force of the spring 600. At this time, no matter whether there is air pressure driving at the piston rod 420, the compensation cylinder 400 cannot move the upper cover 200 forward or backward. In addition to locking and braking the brake assembly 520 and the housing 510 by the piston push rod 530, the screw can also be locked into the top screw hole 513 of the housing 510, and the screw can be rotated to tighten the brake assembly 520, thereby achieving the braking of the brake assembly 520 and the housing 510. When the brake assembly 520 is locked by the screw, the air pressure changes at the piston push rod 530 and the piston rod 420 can no longer cause the upper cover 200 and the base 100 to move relative to each other.

[0047] If necessary, the screw shaft 300 can be rotated by the rotating handle 320 at the rear end of the screw shaft 300. The screw shaft 300 is threadedly connected to the base 100. When the screw shaft 300 is rotated, the screw shaft 300 will drive the upper cover 200 to move forward and backward relative to the base 100.

[0048] In some embodiments, the tension sleeve 521 is a whole and is sleeved on the center positioning sleeve 522 .

[0049] In some embodiments, the screw shaft 300 does not penetrate the compensation cylinder 400 and the brake assembly 500, and the piston rod 420 of the compensation cylinder 400 is rotationally connected to the screw shaft 300 to achieve axial synchronization.

[0050] In addition, the embodiments of the feeding device of the present invention can refer to the various examples of the feeding device involved in the glass edge grinding machine listed above, and various examples will not be described here.

[0051] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A feeding device, characterized in that: include: A base (100), an upper cover (200), a screw shaft (300), a compensating cylinder (400) and a brake assembly (500); The base (100) and the upper cover (200) are slidably connected; The compensating cylinder (400) comprises a cylinder body (410) and a piston rod (420), wherein the piston rod (420) is slidably connected to the cylinder body (410); The cylinder body (410) is fixedly connected to the upper cover (200), the screw shaft (300) is fixedly connected to the base (100), and the piston rod (420) is rotatably connected to the screw shaft (300); The brake assembly (500) is brake-connected to the cylinder (410); The brake assembly (500) comprises a housing (510), a brake assembly (520) and a piston push rod (530); the housing (510) is fixedly connected to the cylinder body (410); a brake block cavity (511) and a push rod cavity (512) are provided in the housing (510); the brake assembly (520) is slidably sleeved in the brake block cavity (511); the brake assembly (520) is fixedly connected to the piston rod (420); and the piston push rod (530) is slidably sleeved in the push rod cavity (512); The brake assembly (520) is cylindrical, and comprises a tension sleeve (521) and a center positioning sleeve (522). The center positioning sleeve (522) is provided with flanges at both ends, and the tension sleeve (521) is clamped between the two flanges of the center positioning sleeve (522). The tension sleeve (521) is provided with an open slot (523). The piston push rod (530) is arranged along the radial direction of the brake assembly (520). The piston push rod (530) is provided with a wedge-shaped protrusion (531), and the protrusion (531) is directly opposite to the open slot (523). The tension sleeve (521) comprises two semicircular brake pieces, the open slot (523) is arranged between the edges of the two semicircular brake pieces, and the two inclined surfaces of the protruding portion (531) respectively correspond to the edges of the two semicircular brake pieces.

2. The feeding device according to claim 1, characterized in that: The screw shaft (300) is provided with a screw part (310), and the screw part (310) is threadedly connected to the base (100); the rear end of the screw shaft (300) is provided with a rotating handle (320), and the rotating handle (320) is fixedly connected to the screw shaft (300).

3. The feeding device according to claim 1, characterized in that: A spring (600) is provided between the piston push rod (530) and the housing (510), and the spring (600) enables the piston push rod (530) to move along the push rod cavity (512) toward the brake assembly (520).

4. The feeding device according to claim 1, characterized in that: The housing (510) is provided with a top screw hole (513), and the top screw hole (513) communicates the outside of the housing (510) with the brake block cavity (511).

5. The feeding device according to any one of claims 1 to 4, characterized in that: The screw shaft (300) passes through the compensation cylinder (400) and the brake assembly (500), the screw shaft (300) is sleeved in the piston rod (420), and the piston rod (420) and the brake assembly (500) are both rotatably connected to the screw shaft (300).

6. The feeding device according to claim 1, characterized in that: It also includes a spring (600), the front end of the screw shaft (300) is provided with a spring blocking portion, the upper cover (200) is provided with a spring blocking block, and the spring (600) is arranged between the spring blocking portion and the spring blocking block.

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