Seamless four-corner welding machine head

Abstract

The present invention provides a seamless four-corner welding machine head with reasonable design and improved welding quality. It includes a head base and a clamping mechanism, an upper clamp driving mechanism, a clamp pushing mechanism, a heating mechanism and a knife squeezing mechanism arranged on the head base; wherein the clamping mechanism includes a front clamp and a rear clamp, the front clamp includes a front upper clamp and a front lower clamp, the front upper clamp and the rear upper clamp are connected as a whole through an upper clamp connecting seat, and a front pad device and a rear pad device are respectively arranged on the front upper clamp and the rear upper clamp; the upper clamp driving mechanism drives the front upper clamp to approach or move away from the front lower clamp along the front upper clamp moving pair, and the rear upper clamp approaches or moves away from the front lower clamp along the front upper clamp moving pair; the clamp pushing mechanism drives the rear lower clamp to approach or move away from the front lower clamp along the rear lower clamp moving pair; the heating plate of the heating mechanism is pushed by the heating plate feeding cylinder to heat and melt the end surface of the profile.

Description

Technical Field

[0001] The invention relates to a plastic-steel welding machine, in particular to a seamless four-corner welding machine head, belonging to the technical field of plastic-steel machinery. Background Art

[0002] The plastic-steel door and window welding machine is an important processing equipment used by door and window processing enterprises in the production of plastic-steel doors and windows. The current four-corner welding machine has a weld seam of 2mm. However, with the continuous improvement of people's aesthetics, many PVC profiles on the market are coated or co-extruded to make the upper and lower surfaces become colored PVC profiles. The surface color film is about 0.1-0.2mm. If seam welding is used, after the welding is completed, the upper and lower surfaces become white after cleaning. Therefore, there is an urgent need for an efficient four-corner welding machine that can achieve seamlessness.

[0003] The weld cleaning of seamless welding is a blade shearing method. At the end of welding, the blade will shear off the welds on the upper and lower planes. The processing efficiency is high, and the colored films are bonded together without showing the white PVC substrate. Summary of the invention

[0004] The invention aims to provide a seamless four-corner welding machine head which has a reasonable design and can improve welding quality.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A seamless four-corner welding machine head, comprising a head base and a clamping mechanism, an upper clamp driving mechanism, a clamp pushing mechanism, a heating mechanism and a knife squeezing mechanism arranged on the head base; wherein

[0007] The clamping mechanism includes a front clamp and a rear clamp, the front clamp includes a front upper clamp and a front lower clamp, the rear clamp includes a rear upper clamp and a rear lower clamp, the front upper clamp is connected to the front lower clamp via a front column, the rear upper clamp is connected to the rear lower clamp via a rear column, the front upper clamp and the rear upper clamp are connected as a whole via an upper clamp connecting seat, and a front pad device and a rear pad device are respectively provided on the front upper clamp and the rear upper clamp;

[0008] The upper clamp driving mechanism drives the front upper clamp to move toward or away from the front lower clamp along the front upper clamp moving pair, while the rear upper clamp moves toward or away from the front lower clamp along the front upper clamp moving pair;

[0009] The clamp propulsion mechanism drives the rear clamp to move toward or away from the front clamp along the rear clamp motion pair;

[0010] The heating plate of the heating mechanism is pushed by the heating plate feeding cylinder to heat and melt the end surface of the profile;

[0011] The squeeze knife mechanism comprises a front squeeze knife, a front squeeze knife pad, a rear squeeze knife and a rear squeeze knife pad. The front squeeze knife and the front squeeze knife pad are arranged on the front lower pressure clamp, and the rear squeeze knife and the rear squeeze knife pad are arranged on the rear lower pressure clamp. The front squeeze knife pad and the rear squeeze knife pad are connected as a whole through a concave and convex socket.

[0012] The preferred embodiment of the seamless four-corner welding machine head is that the front pad device and the rear pad device both include a fixed seat, a pad mounting plate, a pad fixing plate and a pad left and right adjustment plate. The pad mounting plate is adjustable in up and down position relative to the fixed seat, the pad fixing plate is adjustable in front and back position relative to the pad mounting plate, and the pad left and right adjustment plate is adjustable in left and right position relative to the pad fixing plate.

[0013] The preferred embodiment of the seamless four-corner welding machine head includes an up and down adjustment assembly consisting of a pad lifting shaft and a lifting spring, one end of the pad lifting shaft is arranged on a fixed seat, and the other end passes through a pad mounting plate, and a lifting spring is mounted on the pad lifting shaft.

[0014] The preferred embodiment of the seamless four-corner welding machine head comprises a front and rear adjustment assembly consisting of a pad front and rear axis and a limit screw, and a pad front and rear axis and a limit screw are arranged between the pad mounting plate and the pad fixing plate.

[0015] The preferred embodiment of the seamless four-corner welding machine head is that the left and right adjustment plates of the pad are provided with long holes, and the left and right adjustment plates of the pad and the pad fixing plate are connected by adjusting bolts.

[0016] The preferred embodiment of the seamless four-corner welding machine head also includes two casement sash clamping cylinders, the cylinder bodies of the two casement sash clamping cylinders are both arranged on the upper clamp connecting seat, and the cylinder rods of the casement sash clamping cylinders are respectively connected to the front upper clamp and the rear upper clamp.

[0017] The preferred embodiment of the seamless four-corner welding machine head also includes a welding limit mechanism and a positioning limit mechanism; the welding limit mechanism and the positioning limit mechanism are symmetrically arranged on both sides of the pressure clamp propulsion mechanism, the welding limit mechanism includes a welding limit cylinder and a welding limit shaft, the welding limit cylinder is vertically arranged relative to the welding plate into position cylinder, the welding limit shaft is arranged below the welding limit cylinder, and the welding limit shaft axis is parallel to the welding limit cylinder axis; the positioning limit mechanism includes a positioning limit cylinder and a positioning limit shaft, the positioning limit cylinder is vertically arranged relative to the welding plate into position cylinder on both sides of the pressure clamp propulsion mechanism, the positioning limit shaft is arranged below the welding limit cylinder, and the positioning limit shaft axis is parallel to the welding limit cylinder axis.

[0018] The preferred embodiment of the seamless four-corner welding machine head is that the discharging mechanism includes a discharging cylinder, a pushing plate and a discharging guide pair, the cylinder body end of the discharging cylinder is arranged on the rear column, the cylinder rod end of the discharging cylinder is provided with a pushing plate, and the discharging cylinder pushes the pushing plate to move back and forth along the discharging guide pair.

[0019] The advantages of the present invention are:

[0020] 1. The upper front clamp and the upper rear clamp are connected together through the upper clamp connecting seat to ensure the coplanarity of the upper clamps and share one upper clamp cylinder, avoiding the shearing defects caused by the height difference between the front upper clamp and the rear upper clamp due to the error of the profile itself when other manufacturers use two clamping cylinders.

[0021] 2. Equipped with a universal pad device to meet the welding work of frames, casement sashes, sliding sashes and other profiles from different manufacturers and different specifications and series, especially the casement sash clamping cylinder, which presses the rear edge of the Z-shaped sash to make the profile firm and reliable.

[0022] 3. The convex and concave surfaces of the front and rear extrusion tool pads cooperate with the convex and concave surfaces of the pressing clamp. The convex surface of the rear pressing clamp is pushed by the working cylinder and inserted under the convex surface of the front extrusion tool pad; the convex surface of the front pressing clamp is inserted under the convex surface of the rear extrusion tool to prevent the defect of poor coplanarity of the front and rear pressing clamps caused by collapse or warping under the pressing clamp.

[0023] 4. The positioning limit cylinder and welding limit cylinder cooperate with the limit shaft and the detachable clamp plate to realize manual conversion of seamless / seamless. The weld conversion is simple. One four-corner welding machine can realize the welding of two welds. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0025] Figure 1 An axonometric view of a four-corner welding machine head is selected as an embodiment of the present invention;

[0026] Figure 2 A top view of the left nose of a selected embodiment of the present invention;

[0027] Figure 3 A schematic diagram of the interlaced pressing pliers and the squeeze cutter pad of a selected embodiment of the present invention;

[0028] Figure 4 A staggered cross-sectional view of a pressing clamp and a squeeze cutter pad of a selected embodiment of the present invention;

[0029] Figure 5 Axonometric view of a universal pad selected from an embodiment of the present invention;

[0030] Among them: 1. Upper clamp cylinder, 2. Clamp cylinder plate, 3. Upper clamp connection seat, 4. Front column, 5. Front upper clamp, 6. Front upper clamp kinematic pair, 7. Front pad device, 8. Front lower clamp, 9. Machine head base, 10. Front extruder, 11. Front extruder pad, 12. Rear upper clamp auxiliary cylinder, 13. Rear upper clamp kinematic pair, 14, rear column, 15. Rear clamp kinematic pair, 16. Work cylinder, 17. Welding limit cylinder, 18, rear upper clamp, 19. Discharging cylinder, 20. Rear pad device, 21. Push plate, 22. Rear lower pressure clamp, 23. Rear extrusion knife, 24. Rear extrusion knife pad, 25. Positioning device, 26. Casement fan clamping cylinder, 27. Heating plate, 28. Heating plate feeding cylinder, 29. Welding plate into position cylinder, 30. Positioning limit cylinder, 31. Positioning limit shaft, 32. Welding limit shaft, 33. Pad lifting shaft, 34. Limit screw, 35. Pad mounting plate, 36. Pad front and rear shafts, 37. Pad left and right adjustment plate, 38. Pad fixing plate, 39. Lifting spring, 40. Fixed seat. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] refer to Figure 1 and Figure 2 A seamless four-corner welding machine head, comprising a head base 9 and a clamping mechanism, an upper clamp driving mechanism, a clamp pushing mechanism, a heating mechanism, a knife squeezing mechanism and a discharging mechanism arranged on the head base 9;

[0033] The clamping mechanism includes a front clamp and a rear clamp, the front clamp includes a front upper clamp 5 and a front lower clamp 8, the rear clamp includes a rear upper clamp 18 and a rear lower clamp 22, the front upper clamp 5 is connected to the front lower clamp 8 through a front column 4, the rear upper clamp 18 is connected to the rear lower clamp 22 through a rear column 14, the front upper clamp 5 and the rear upper clamp 18 are connected as a whole through an upper clamp connecting seat 3, and a front pad device 7 and a rear pad device 20 are respectively provided on the front upper clamp 5 and the rear upper clamp 18;

[0034] The upper clamp driving mechanism is an upper clamp cylinder 1, the cylinder body of the upper clamp cylinder is arranged on the clamp cylinder plate 2, the clamp cylinder plate 2 is arranged on the front column 4, and the cylinder rod of the upper clamp cylinder is arranged on the upper clamp connecting seat 3, which is used to drive the front upper clamp 5 to move closer to or away from the front lower clamp 8 along the front upper clamp motion pair 6, and the rear upper clamp 18 to move closer to or away from the front lower clamp 8 along the front upper clamp motion pair 6;

[0035] The clamp propulsion mechanism is a work cylinder 16, which can drive the rear lower clamp 22 to move closer to or away from the front lower clamp 8 along the rear lower clamp motion pair 42;

[0036] The heating plate 27 of the heating mechanism is pushed by the heating plate feeding cylinder 28 to heat and melt the end surface of the profile, and a welding plate positioning cylinder 29 is arranged next to the heating mechanism;

[0037] The discharging mechanism includes a discharging cylinder 19 , a push plate 21 and a discharging guide pair 41 . The cylinder body end of the discharging cylinder 19 is arranged on the rear column 14 , and the push plate 21 is arranged at the cylinder rod end of the discharging cylinder 19 . The discharging cylinder 19 pushes the push plate 21 to move back and forth along the discharging guide pair 41 .

[0038] like Figure 3 and Figure 4 The squeeze knife mechanism shown includes a front squeeze knife 10, a front squeeze knife pad 11, a rear squeeze knife 23 and a rear squeeze knife pad 24. The front squeeze knife 10 and the front squeeze knife pad 11 are arranged on the front lower pressure clamp 8, and the rear squeeze knife 23 and the rear squeeze knife pad 24 are arranged on the rear lower pressure clamp 22. The front squeeze knife pad 11 and the rear squeeze knife pad 24 are connected as a whole through a concave and convex socket to ensure the coplanarity of the squeeze knives and improve the flatness of seamless shearing.

[0039] refer to Figure 5 The front pad device 7 and the rear pad device 20 both include a fixed seat 40, a pad mounting plate 35, a pad fixing plate 38 and a pad left and right adjustment plate 37. The pad mounting plate 35 is adjustable in up and down position relative to the fixed seat 40, the pad fixing plate 38 is adjustable in front and back position relative to the pad mounting plate 35, and the pad left and right adjustment plate 37 is adjustable in left and right position relative to the pad fixing plate 38.

[0040] In this embodiment, the pad lifting shaft 33 and the lifting spring 39 constitute an up and down adjustment component, where one end of the pad lifting shaft 33 is set on the fixed seat 40, and the other end passes through the pad mounting plate 35, and the pad lifting shaft 33 is equipped with a lifting spring 39, thereby realizing the adjustment of the up and down position of the pad mounting plate 35 relative to the fixed seat 40.

[0041] In this embodiment, the front and rear adjustment components consisting of the pad front and rear axles 36 and the limit screws 34 are provided between the pad mounting plate 35 and the pad fixing plate 38, thereby realizing the front and rear position adjustment of the pad fixing plate 38 relative to the pad mounting plate 35.

[0042] In this embodiment, the left and right adjustment plate 37 of the pad is provided with a long hole, and the left and right adjustment plate 37 of the pad and the pad fixing plate 38 are connected by adjusting bolts to achieve left and right position adjustment of the left and right adjustment plate 37 relative to the pad fixing plate 38.

[0043] refer to Figure 1 and Figure 2In this embodiment, two casement sash clamping cylinders 26 are also included. The cylinder bodies of the two casement sash clamping cylinders 26 are both arranged on the upper clamp connecting seat 3, and the cylinder rods of the casement sash clamping cylinders 26 are respectively connected to the front upper clamp 5 and the rear upper clamp 18.

[0044] refer to Figure 2 In this embodiment, a welding limit mechanism and a positioning limit mechanism are also included; the welding limit mechanism and the positioning limit mechanism are symmetrically arranged on both sides of the pressure clamp propulsion mechanism, the welding limit mechanism includes a welding limit cylinder 17 and a welding limit shaft 32, the welding limit cylinder 17 is vertically arranged relative to the welding plate in place cylinder 29, the welding limit shaft 32 is arranged below the welding limit cylinder 17, and the axis of the welding limit shaft 32 is parallel to the axis of the welding limit cylinder 17; the positioning limit mechanism includes a positioning limit cylinder 30 and a positioning limit shaft 31, the positioning limit cylinder 30 is vertically arranged on both sides of the pressure clamp propulsion mechanism relative to the welding plate in place cylinder 29, the positioning limit shaft 31 is arranged below the welding limit cylinder 17, and the axis of the positioning limit shaft 31 is parallel to the axis of the welding limit cylinder 17.

[0045] When seamless welding is at the end, the work cylinder 16 drives the rear lower pressure clamp 22 to squeeze to the end, touches the step of the front lower pressure clamp, and stops working. At this time, the final gap between the front extrusion knife 10 and the rear extrusion knife 23 is 0. If seam welding is performed, the gap between the front extrusion knife 10 and the rear extrusion knife 23 is 2mm. The work cylinder 16 cannot stop at a certain position in the middle. The work cylinder 16 can only be realized by inserting a mechanical hard limit. The welding limit mechanism and the positioning limit mechanism realize the limit, thereby realizing the manual conversion of seamless / seamless. The weld conversion is simple. One four-corner welding machine can realize the welding of two welds.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A seamless four-corner welding machine head, characterized by: It includes a machine head base and a clamping mechanism, an upper clamp driving mechanism, a clamp propulsion mechanism, a heating mechanism and a squeeze knife mechanism arranged on the machine head base; wherein The clamping mechanism comprises a front clamp and a rear clamp, wherein the front clamp comprises a front upper clamp (5) and a front lower clamp (8), and the rear clamp comprises a rear upper clamp (18) and a rear lower clamp (22). The front upper clamp (5) is connected to the front lower clamp (8) via a front column (4), and the rear upper clamp (18) is connected to the rear lower clamp (22) via a rear column (14). The front upper clamp (5) and the rear upper clamp (18) are connected as a whole via an upper clamp connecting seat (3), and a front pad device (7) and a rear pad device (20) are respectively arranged on the front upper clamp (5) and the rear upper clamp (18). The upper clamp driving mechanism drives the front upper clamp (5) to move closer to or farther from the front lower clamp (8) along the front upper clamp motion pair (6), while the rear upper clamp (18) moves closer to or farther from the front lower clamp (8) along the front upper clamp motion pair (6); The clamp propulsion mechanism drives the rear lower clamp (22) to move closer to or farther from the front lower clamp (8) along the rear lower clamp motion pair (42); The heating plate (27) of the heating mechanism is pushed by the heating plate feeding cylinder (28) to heat and melt the end surface of the profile, and a welding plate positioning cylinder (29) is arranged next to the heating mechanism; The extruding knife mechanism comprises a front extruding knife (10), a front extruding knife pad (11), a rear extruding knife (23) and a rear extruding knife pad (24); the front extruding knife (10) and the front extruding knife pad (11) are arranged on a front lower pressing clamp (8); the rear extruding knife (23) and the rear extruding knife pad (24) are arranged on a rear lower pressing clamp (22); the front extruding knife pad (11) and the rear extruding knife pad (24) are connected as a whole via a concave-convex socket; The front pad device (7) and the rear pad device (20) both comprise a fixing seat (40), a pad mounting plate (35), a pad fixing plate (38) and a pad left-right adjustment plate (37); the pad mounting plate (35) is adjustable in vertical position relative to the fixing seat (40); the pad fixing plate (38) is adjustable in front-back position relative to the pad mounting plate (35); and the pad left-right adjustment plate (37) is adjustable in left-right position relative to the pad fixing plate (38).

2. The seamless four-corner welding machine head according to claim 1, characterized in that: It comprises an up-and-down adjustment assembly consisting of a pad lifting shaft (33) and a lifting spring (39), wherein one end of the pad lifting shaft (33) is arranged on a fixing seat (40) and the other end passes through a pad mounting plate (35), and a lifting spring (39) is sleeved on the pad lifting shaft (33).

3. The seamless four-corner welding machine head according to claim 1, characterized in that: It comprises a front and rear adjustment component consisting of a backing plate front and rear axle (36) and a limit screw (34). The backing plate front and rear axle (36) and the limit screw (34) are arranged between a backing plate mounting plate (35) and a backing plate fixing plate (38).

4. The seamless four-corner welding machine head according to claim 1, characterized in that: The left and right adjustment plates (37) of the pad are provided with long holes, and the left and right adjustment plates (37) of the pad and the pad fixing plate (38) are connected by adjusting bolts.

5. The seamless four-corner welding machine head according to claim 1, characterized in that: It also includes two casement sash clamping cylinders (26), the cylinder bodies of the two casement sash clamping cylinders (26) are both arranged on the upper clamp connecting seat (3), and the cylinder rods of the casement sash clamping cylinders (26) are respectively connected to the front upper clamp (5) and the rear upper clamp (18).

6. The seamless four-corner welding machine head according to claim 1, characterized in that: It also includes a welding limit mechanism and a positioning limit mechanism; the welding limit mechanism and the positioning limit mechanism are symmetrically arranged on both sides of the pressure clamp propulsion mechanism, the welding limit mechanism includes a welding limit cylinder (17) and a welding limit shaft (32), the welding limit cylinder (17) is vertically arranged relative to the welding plate positioning cylinder (29), the welding limit shaft (32) is arranged below the welding limit cylinder (17), and the axis of the welding limit shaft (32) is parallel to the axis of the welding limit cylinder (17); the positioning limit mechanism includes a positioning limit cylinder (30) and a positioning limit shaft (31), the positioning limit cylinder (30) is vertically arranged relative to the welding plate positioning cylinder (29) on both sides of the pressure clamp propulsion mechanism, the positioning limit shaft (31) is arranged below the welding limit cylinder (17), and the axis of the positioning limit shaft (31) is parallel to the axis of the welding limit cylinder (17).

7. The seamless four-corner welding machine head according to claim 1, characterized in that: The discharging mechanism comprises a discharging cylinder (19), a pushing plate (21) and a discharging guide rail pair (41); the cylinder body end of the discharging cylinder (19) is arranged on the rear column (14); the pushing plate (21) is arranged on the cylinder rod end of the discharging cylinder (19); the discharging cylinder (19) pushes the pushing plate (21) to move back and forth along the discharging guide rail pair (41).

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