Low stress glass transverse breaking machine with elastic buffer breaking head

Abstract

This utility model discloses a low-stress glass lateral breaking machine with an elastic buffer breaking head. Addressing the problem of high glass breakage rates due to stress concentration in traditional equipment, it employs an elastic buffer to absorb the downward impact, and the upper and lower breaking plates are equipped with matching arc-shaped convex surfaces to disperse stress. The clamping assembly provides stable guidance and positioning, and the lifting and pressing cylinders work together for driving. The pre-compression amount of the elastic buffer can be adjusted to accommodate different glass specifications. This device reduces breaking stress, minimizes edge breakage, and improves production yield, making it suitable for the lateral breaking process of flat glass substrates.

Description

Technical Field

[0001] This utility model relates to the technical field of flat glass production equipment, and in particular to a low-stress glass transverse breaking machine with an elastic buffer breaking head. Background Technology

[0002] In the production of flat glass, lateral breaking is one of the key processes in glass substrate forming. Its core objective is to separate continuously produced glass strips along a predetermined cutting line into finished or semi-finished products of specific sizes. Traditional lateral breaking machines typically employ a rigid mechanical contact method, achieving glass separation through direct compression or impact from the upper and lower breaking plates. However, such equipment suffers from the following prominent problems in practical applications: First, stress concentration leads to a high glass breakage rate. The upper and lower breaking plates of traditional breaking machines are mostly flat or simply folded designs, resulting in a small contact area and a lack of buffering mechanisms. During breaking, the glass edges are subjected to concentrated impact stress, easily causing micro-cracks or edge chipping. This is especially problematic for thin glass (such as ultra-thin glass with a thickness ≤0.5mm) or large-sized glass substrates, where the breakage rate can reach 3%-5%, severely impacting product yield. Second, insufficient clamping and conveying stability. During transport, glass substrates are prone to lateral displacement due to uneven roller friction or positioning deviations. Traditional clamping components often use rigid clamps for direct pressing, lacking elastic cushioning and potentially damaging the glass surface. Furthermore, uneven clamping force distribution leads to unbalanced forces on the glass upon breakage, further exacerbating stress concentration. Thirdly, the flexibility of breaking force adjustment is poor. Different glass specifications (such as thickness, width, and strength) have significantly different breaking force requirements. Traditional equipment often relies on fixed-stroke cylinders or mechanical structures, making it difficult to quickly adapt to different products and requiring frequent manual adjustments, thus impacting production efficiency.

[0003] Therefore, there is an urgent need for a low-stress glass transverse breaking machine that can reduce breaking stress, improve clamping stability, and has adjustable parameters, in order to solve the problems of high breakage rate and poor adaptability faced by traditional equipment in flat glass production. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a low-stress glass transverse breaking machine with an elastic buffer breaking head.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model discloses a low-stress glass lateral breaking machine with an elastic buffer breaking head, comprising a conveying assembly, a clamping assembly, and a breaking assembly. The conveying assembly conveys the glass substrate to be broken along a set direction; the clamping assembly is disposed at the output end of the conveying assembly and is used to clamp and position the glass substrate; the breaking assembly is disposed on the side of the clamping assembly and is used to perform a lateral breaking operation on the clamped glass substrate. The breaking assembly includes multiple downward pressure cylinders, evenly distributed along the length of the clamping assembly; the horizontal fixed plate is a rectangular steel plate, the top surface of which is fixedly connected to the bottom end of the piston rod of all the downward pressure cylinders by bolts; two elastic buffers are symmetrically arranged at the bottom ends of the horizontal fixed plate; the top surface of the upper breaking plate is fixedly connected to the bottom ends of the two elastic buffers by bolts; two bearing seats are fixed to the bottom support structure of the clamping assembly, and deep groove ball bearings are installed inside to support the rotating shaft of the lower breaking plate; the middle part of the lower breaking plate is rotatably mounted between the two bearing seats through the rotating shaft; two hinge seats are symmetrically welded to the bottom of the lower breaking plate near the conveying assembly, and the hinge seats are provided with pin holes; the top ends of the piston rods of the two lifting cylinders are hinged to the corresponding hinge seats through pins.

[0006] As a preferred embodiment of this utility model, the conveying assembly includes a conveying frame with a rectangular frame structure; a plurality of conveying rollers are arranged in an array at equal intervals along the conveying direction on the conveying frame, the roller shafts of the conveying rollers are rotatably connected to the conveying frame through bearings, and the roller surfaces are covered with nitrile rubber; a drive motor is installed at the bottom of the conveying frame, and its output shaft is connected to the roller shaft of at least one conveying roller through a synchronous belt; the limiting rollers are horizontally arranged cylindrical rollers, symmetrically installed on both sides of the conveying frame, and the roller axes are perpendicular to the conveying direction; the limiting rollers are installed on the side of the conveying frame through limiting brackets.

[0007] As a preferred technical solution of this utility model, the clamping assembly includes a fixed frame with a triangular structure, the vertical end of which is fixedly connected to the end of the conveying frame of the conveying assembly; a clamping base plate is horizontally fixed to the top of the horizontal end of the fixed frame; two sets of guide seats are symmetrically arranged at the bottom ends of the clamping base plate; two guide shafts are slidably inserted into the two sets of guide seats, with the guide shafts and guide seats having a clearance fit; two drive cylinders are fixed to the bottom of the two sets of guide seats, and their piston rods are connected to the bottom end of the corresponding guide shafts through a fisheye joint; and a buffer clamp is horizontally fixed to the top of the two guide shafts.

[0008] As a preferred technical solution of this utility model, the elastic buffer includes an outer sleeve, a helical compression spring fitted inside the outer sleeve, and an adjusting nut fixed to the bottom end of the helical compression spring; the top end of the outer sleeve is welded to a horizontal fixed plate, and the adjusting nut is used to adjust the pre-compression amount of the elastic buffer.

[0009] As a preferred technical solution of this utility model, the bottom surface of the upper break plate is processed with an upper arc convex surface that matches the edge of the glass; the top surface of the lower break plate is processed with a lower arc convex surface that matches the upper arc convex surface, and the radius of curvature of the lower arc convex surface is the same as that of the upper arc convex surface.

[0010] As a preferred technical solution of this utility model, the bottom end of the lifting cylinder is hinged to the lug at the bottom of the fixing frame via a pin.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Low-stress breakage, significantly reducing glass breakage rate: Through the synergistic design of the elastic buffer and the arc-shaped convex surface, "flexible loading" is achieved during the breaking process: The elastic buffer (including a spiral compression spring and an adjusting nut) absorbs the impact energy during the downward pressure process, avoiding glass microcracks caused by rigid collisions; the adjusting nut can adjust the pre-compression amount according to the glass thickness or strength, adapting to the stress requirements of different products. The arc-shaped convex surface of the upper and lower breaking plates increases the contact area, making the breaking stress evenly distributed on the glass edge, especially suitable for ultra-thin or large-size glass substrates. Tests have shown that the breakage rate can be reduced to below 0.5%. 2. The clamping assembly, through the clearance fit design between the guide shaft and the guide seat, ensures that the buffer clamp moves linearly in the vertical direction, avoiding offset. When the buffer clamp contacts the glass, the sliding buffer of the guide shaft reduces the risk of surface damage. At the same time, the limiting rollers of the conveying assembly (symmetrically distributed on both sides of the conveyor frame) restrict the lateral offset of the glass. Combined with the synchronous belt drive of the drive motor, the conveying positioning accuracy can reach ±0.1mm, providing stable initial conditions for breaking. 3. The pre-compression of the elastic buffer and the stroke of the lifting cylinder can be adjusted independently. Combined with the curvature radius design of the upper and lower break plate arc convex surfaces, it can quickly adapt to glass substrates of different thicknesses (0.3-1.1mm) and widths (1000-2900mm) without replacing core components, greatly shortening changeover time and improving equipment utilization. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is the front view of this utility model; Figure 3 This is a side view of the present invention; Figure 4 This is a top view of the present invention; Figure 5This is a schematic diagram of the structure of the elastic buffer in this utility model; In the diagram: 1. Conveying assembly; 2. Clamping assembly; 3. Breaking assembly; 11. Conveying frame; 12. Conveying roller; 13. Drive motor; 14. Limiting roller; 15. Limiting bracket; 21. Fixing frame; 22. Clamping base plate; 23. Guide seat; 24. Guide shaft; 25. Drive cylinder; 26. Buffer clamping plate; 31. Downward pressing cylinder; 32. Horizontal fixing plate; 33. Elastic buffer; 34. Upper breaking plate; 35. Bearing seat; 36. Lower breaking plate; 37. Hinge seat; 38. Lifting cylinder; 331. Outer sleeve; 332. Compression spring; 333. Adjusting nut; 341. Upper arc convex surface; 361. Lower arc convex surface; 381. Ear seat. Detailed Implementation

[0013] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0014] In the attached diagram, all identical reference numerals refer to the same components.

[0015] Example 1 (Breaking glass of conventional thickness) like Figure 1-5 As shown, this embodiment is applicable to the lateral breaking of flat glass substrates with a thickness of 0.8mm to 1.1mm.

[0016] In the conveying assembly 1, the conveying frame 11 is a rectangular frame with several conveying rollers 12 evenly spaced on it. The roller shafts of the conveying rollers 12 are rotatably connected to the conveying frame 11 via bearings, and the rollers are coated with nitrile rubber to increase friction. The drive motor 13 is installed at the bottom of the conveying frame 11, and its output shaft is driven by the first conveying roller 12 via a synchronous belt, driving the conveying rollers 12 to rotate and convey the glass. Limiting rollers 14 are fixed on both sides of the conveying frame 11 by limiting brackets 15. The limiting rollers 14 are horizontal cylindrical rollers with their axes perpendicular to the conveying direction, limiting the lateral displacement of the glass.

[0017] When the glass is conveyed to the clamping assembly 2, the vertical end of the triangular structure of the fixing frame 21 is fixed to the end of the conveying frame 11, and a clamping base plate 22 is set at the top of the horizontal end. Two sets of guide seats 23 are symmetrically arranged at both ends of the bottom of the clamping base plate 22. A guide shaft 24 slides through each set of guide seats 23, and the guide shaft 24 is clearance-fitted with the guide seat 23. Two drive cylinders 25 are respectively fixed to the bottom of the guide seats 23, and the piston rods are connected to the bottom end of the guide shaft 24 through a fisheye joint. A buffer clamping plate 26 is fixed to the top of the guide shaft 24. When the drive cylinders 25 are activated, the guide shaft 24 slides along the guide seat 23, driving the buffer clamping plate 26 to move up and down, clamping or releasing the glass.

[0018] Please see Figure 3 , Figure 5 In the breaking assembly 3, multiple pressing cylinders 31 are evenly distributed along the length of the clamping assembly 2, and the bottom end of the piston rod is fixed to the top surface of the horizontal fixing plate 32 by bolts. Two elastic buffers 33 are symmetrically arranged at both ends of the bottom of the horizontal fixing plate 32. Each elastic buffer 33 consists of an outer sleeve 331, a helical compression spring 332, and an adjusting nut 333: the top end of the outer sleeve 331 is welded to the horizontal fixing plate 32, and the helical compression spring 332 is installed inside. The adjusting nut 333 is fixed to the bottom end of the helical compression spring 332, and the pre-compression amount of the elastic buffer 33 can be adjusted by rotating the adjusting nut 333. The top surface of the upper breaking plate 34 is fixed to the bottom end of the two elastic buffers 33 by bolts, and the bottom surface is machined with an upper arc convex surface 341.

[0019] The lower break plate 36 is rotatably mounted between two bearing seats 35 via a pivot. The bearing seats 35 are fixed to the bottom support structure of the clamping assembly 2 and have deep groove ball bearings installed inside to reduce rotational friction. Two hinge seats 37 are symmetrically welded to the bottom of the lower break plate 36 near the conveying assembly 1. The hinge seats 37 have pin holes. The top ends of the piston rods of the two lifting cylinders 38 are hinged to the corresponding hinge seats 37 via pins, and the bottom ends are hinged to the lugs 381 at the bottom of the fixing frame 21 via pins.

[0020] During operation, the drive cylinder 25 pushes the buffer clamp 26 to clamp the glass; the pressing cylinder 31 presses down the horizontal fixed plate 32, the elastic buffer 33 absorbs the impact and transmits the pressure to the upper breaking plate 34, the upper arc convex surface 341 fits with the lower arc convex surface 361 on the top surface of the lower breaking plate 36; at the same time, the lifting cylinder 38 lifts the hinge seat 37, pushes the lower breaking plate 36 to rotate around the bearing seat 35, and the upper and lower breaking plates work together to apply bending moment to the edge of the glass to achieve low-stress breaking.

[0021] Example 2 (Breaking Ultra-thin Glass) This embodiment is applicable to ultra-thin glass substrates with a thickness of 0.3 to 0.5 mm. The difference from Embodiment 1 is that: the stiffness of the spiral compression spring 332 of the elastic buffer 33 is reduced, and the pre-compression amount of the adjusting nut 333 is increased (by tightening the nut to increase the spring compression amount), which enhances the buffering effect during the downward pressing process; the radius of curvature of the arc convex surfaces 341 and 361 of the upper break plate 34 and the lower break plate 36 is reduced (more gentle), which increases the contact area and further disperses the stress; an elastic rubber layer is added to the surface of the buffer clamp 26 to avoid damaging the glass when clamping.

[0022] Example 3 (Breaking a large piece of glass) This embodiment is applicable to large-size glass substrates with a width of 2,500 to 2,900 millimeters. The difference from Embodiment 1 is that: the number of conveying rollers 12 in the conveying assembly 1 is increased (with equal spacing and denser spacing) to improve conveying stability; the number of driving cylinders 25 in the clamping assembly 2 is increased (two sets are symmetrically arranged along the width direction) to increase the clamping force coverage range; the number of pressing cylinders 31 in the breaking assembly 3 is increased (with denser spacing along the length direction) to ensure that the horizontal fixing plate 32 is subjected to uniform force; and the length of the outer sleeve 331 of the elastic buffer 33 is increased to accommodate a larger pre-compression adjustment range and meet the high breaking force requirements of large-size glass.

[0023] The above embodiments can adapt to the breaking requirements of glass of different specifications by adjusting the elastic buffer parameters, contact surface curvature and component number. The core structure achieves low-stress breaking through elastic buffer, arc contact and stable clamping, thereby improving production yield.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A low-stress glass transverse breaking machine with an elastic buffer breaking head, characterized in that, include: A conveying assembly (1) conveys the glass substrate to be broken along a set direction; a clamping assembly (2) is disposed at the output end of the conveying assembly (1) and is used to clamp and position the glass substrate; a breaking assembly (3) is disposed on the side of the clamping assembly (2) and is used to perform a lateral breaking operation on the clamped glass substrate; the breaking assembly (3) includes: multiple pressing cylinders (31) evenly distributed along the length direction of the clamping assembly (2); a horizontal fixing plate (32) is a rectangular steel plate, the top surface of which is fixedly connected to the bottom end of the piston rod of all the pressing cylinders (31) by bolts; and two elastic buffers (33) symmetrically disposed on the horizontal fixing plate (32). The bottom ends of the clamping assembly (2); the upper break plate (34), whose top surface is fixedly connected to the bottom ends of the two elastic buffers (33) by bolts; two bearing seats (35), fixed to the bottom support structure of the clamping assembly (2), with deep groove ball bearings installed inside to support the rotating shaft of the lower break plate (36); the lower break plate (36), whose middle part is rotatably installed between the two bearing seats (35) by a rotating shaft; two hinge seats (37), symmetrically welded to the bottom of the lower break plate (36) near the conveying assembly (1), the hinge seats (37) having pin holes; two lifting cylinders (38), whose piston rod top ends are hinged to the corresponding hinge seats (37) by pins.

2. The low-stress glass transverse breaking machine with an elastic buffer breaking head according to claim 1, characterized in that, The conveying assembly (1) includes: a conveying frame (11), which is a rectangular frame structure; a plurality of conveying rollers (12), which are arranged in an array at equal intervals along the conveying direction on the conveying frame (11), the roller shafts of the conveying rollers (12) are rotatably connected to the conveying frame (11) through bearings, and the roller surface is covered with nitrile rubber; a drive motor (13), which is installed at the bottom of the conveying frame (11), and its output shaft is connected to the roller shaft of at least one conveying roller (12) through a synchronous belt; a limiting roller (14), which is a horizontally arranged cylindrical roller, symmetrically installed on both sides of the conveying frame (11), and the roller axis is perpendicular to the conveying direction; the limiting roller (14) is installed on the side of the conveying frame (11) through a limiting bracket (15).

3. The low-stress glass transverse breaking machine with an elastic buffer breaking head according to claim 1, characterized in that, The clamping assembly (2) includes: a fixed frame (21), which is a triangular structure, with its vertical end fixedly connected to the end of the conveying frame (11) of the conveying assembly (1); a clamping base plate (22), which is horizontally fixed to the top of the horizontal end of the fixed frame (21); two sets of guide seats (23), which are symmetrically arranged at the bottom ends of the clamping base plate (22); two guide shafts (24), which are slidably inserted into the two sets of guide seats (23), and the guide shafts (24) are clearance-fitted with the guide seats (23); two drive cylinders (25), which are fixed to the bottom of the two sets of guide seats (23), and their piston rods are connected to the bottom end of the corresponding guide shafts (24) through fisheye joints; and a buffer clamp (26), which is horizontally fixed to the top of the two guide shafts (24).

4. The low-stress glass transverse breaking machine with an elastic buffer breaking head according to claim 1, characterized in that, The elastic buffer (33) includes an outer sleeve (331), a helical compression spring (332) fitted inside the outer sleeve (331), and an adjusting nut (333) fixed to the bottom end of the helical compression spring (332); the top end of the outer sleeve (331) is welded to the horizontal fixing plate (32), and the adjusting nut (333) is used to adjust the pre-compression amount of the elastic buffer (33).

5. A low-stress glass transverse breaking machine with an elastic buffer breaking head according to claim 1, characterized in that, The bottom surface of the upper break plate (34) is machined with an upper arc convex surface (341) that matches the edge of the glass; the top surface of the lower break plate (36) is machined with a lower arc convex surface (361) that matches the upper arc convex surface (341), and the radius of curvature of the lower arc convex surface (361) is the same as that of the upper arc convex surface (341).

6. A low-stress glass transverse breaking machine with an elastic buffer breaking head according to claim 3, characterized in that, The bottom end of the lifting cylinder (38) is hinged to the lug (381) at the bottom of the fixing frame (21) by a pin.

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