A cutting device on welding sheet production equipment

Abstract

The present invention provides a cutting device on welding sheet production equipment, belonging to the field of mechanical technology. The cutting device includes a frame and a shearing wheel rotatably connected to the frame, the shearing wheel has a receiving cavity penetrating the circumference of the shearing wheel, the receiving cavity has an arched shearing blade at the opening on the circumference of the shearing wheel, a guide groove corresponding to the opening of the receiving cavity is arranged below the shearing wheel, the shearing blade includes two side blades symmetrically distributed on both sides of the opening of the receiving cavity, and the spacing between the two side blades gradually decreases to zero from one end close to the running direction of the shearing wheel to the other end. The present invention has the advantages of being able to improve the flatness of the cut surface.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a cutting device on welding sheet production equipment. Background Art

[0002] Dip soldering (dip welding) refers to a soldering method using a metal bath. The solder sheet is small in size and thin in thickness. Using traditional pressing equipment not only has a low feeding efficiency, but is also prone to confusion, overfeeding, empty pressing, etc., and is difficult to demould after pressing. In addition, the serrated sides of the solder sheet (set based on welding efficiency and welding effect) make demoulding extremely difficult, resulting in low overall efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a cutting device on welding sheet production equipment in view of the above problems existing in the prior art. The technical problem to be solved by the present invention is to achieve cutting one by one and reduce burrs on the cut surface.

[0004] The objective of the present invention can be achieved through the following technical scheme: a cutting device on welding sheet production equipment, characterized in that the cutting device comprises a frame and a shearing wheel rotatably connected to the frame, the shearing wheel has a accommodating cavity penetrating the circumference of the shearing wheel, the accommodating cavity has an arched shearing blade at the opening on the circumference of the shearing wheel, a material guide groove corresponding to the opening of the accommodating cavity is arranged below the shearing wheel, the shearing blade comprises two side blades symmetrically distributed on both sides of the opening of the accommodating cavity, and the spacing between the two side blades gradually decreases to zero from one end close to the running direction of the shearing wheel to the other end.

[0005] In the above-mentioned cutting device on the welding sheet production equipment, a short shaft coaxial with the shearing wheel is fixedly arranged inside the shearing wheel, a shaft sleeve is sleeved on the short shaft, the shaft sleeve and the short shaft are connected by a torsion spring, a paddle is fixedly arranged on the shaft sleeve, and the paddle is located in the accommodating cavity; in the initial state of the paddle, the outer end of the paddle is located on the inner side of the middle part of the shearing blade, and the paddle divides the accommodating cavity into two chambers.

[0006] The shape of the shearing blade, combined with the rotating shearing of the shearing wheel, can gradually increase the shearing opening until the remaining part is cut off at the connection between the two side blades. Compared with the existing cutting method, the fracture flatness is better and burrs are not easy to appear, making the material feeding smooth and the pressing even, which is beneficial to the quality of the welding piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of a single production unit in a production equipment.

[0008] Figure 2 yes Figure 1An enlarged view of part A in the figure (i.e. a schematic diagram of the structure of the shearing device in the shearing state).

[0009] Figure 3 It is a schematic diagram of the structure of the shearing device after shearing is completed.

[0010] Figure 4 It is a schematic diagram of the state of the shearing device when it drives the sheared billet particles into the guide trough.

[0011] Figure 5 It is a schematic diagram of the connection structure of the toothed belt.

[0012] Figure 6 It is a three-dimensional structural schematic diagram of the upper pressure rod.

[0013] Figure 7 It is a cross-sectional view of the upper pressing wheel and the lower pressing wheel.

[0014] Figure 8 yes Figure 7 Cross-sectional view along the BB direction.

[0015] Fig. 9 yes Figure 8 Enlarged view of part C in the middle.

[0016] Fig.10 It is a schematic diagram of the planar structure of the shear wheel.

[0017] Fig.11 It is a schematic diagram of the structure of the tablet pressing device in the feeding state.

[0018] Fig.12 It is a schematic diagram of the structure of the tablet pressing device after feeding and before pressing.

[0019] Fig.13 It is a schematic diagram of the structure of the tablet pressing device in the pressing state.

[0020] Fig.14 It is a schematic diagram of the structure of the tablet pressing device in the demoulding state.

[0021] In the figure, 1, frame; 11, unwinding bobbin; 12, straightening tube; 21, upper pressing wheel; 22, lower pressing wheel; 3, shearing wheel; 31, accommodating cavity; 32, shearing blade; 33, material guide groove; 34, short shaft; 35, bushing; 36, torsion spring; 37, pick; 4, cavity; 41, upper pressing plate; 42, upper sliding sleeve; 43, upper pressing rod; 44, upper step wheel; 45, reset spring 1; 46, upper step surface; 47, upper second step surface; 48, protrusion; 49, pressing arm; 51, lower pressing plate; 52. Lower sleeve; 53. Lower pressure rod; 54. Lower step wheel; 55. Return spring 2; 56. Next step surface; 57. Next step surface; 58. Next step surface; 61. Push rod; 62. Return spring 3; 71. Gear 1; 72. Gear 2; 73. Gear 3; 74. Gear 4; 75. Toothed belt; 81. Inner gear ring; 82. Intermediate sleeve; 83. Intermediate shaft; 84. Rotating shaft; 85. Outer gear ring 1; 86. Outer gear ring 2; 87. Latch; 88. Avoidance groove; 9. Receiving groove. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 As shown, the production equipment includes a frame 1 and a plurality of production units arranged on the frame 1, the production units include a discharge bobbin 11, a feeding device, a shearing device and a tabletting device, the feeding device includes a straightening tube 12, an upper pressing wheel 21 and a lower pressing wheel 22 rotatably connected to the straightening tube 12, the shearing device includes a shearing wheel 3 rotatably connected to the frame 1, the shearing wheel 3 has a receiving cavity 31 penetrating the circumference of the shearing wheel 3, the receiving cavity 31 has an arched shearing blade 32 at the opening on the circumference of the shearing wheel 3, and a material guide groove 33 corresponding to the opening of the receiving cavity 31 is arranged below the shearing wheel 3;

[0024] The pressing device includes a cavity 4 located at the end of the material guide groove 33, a lower pressing plate 51 located below the cavity 4 and an upper pressing plate 41 located above the feed port. The cavity 4 is opened at the upper and lower ends. The upper pressing plate 41 is controlled by an upper pressing drive mechanism that can intermittently drive the upper pressing plate 41 to close the upper opening of the cavity 4, and the lower pressing plate 51 is controlled by a lower pressing drive mechanism that can intermittently drive the lower pressing plate 51 to close the lower opening of the cavity 4.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Fig.10 As shown, the shearing blade 32 includes two side blades symmetrically distributed on both sides of the opening of the accommodating cavity 31, and the distance between the two side blades gradually decreases to zero from one end close to the running direction of the shearing wheel 3 to the other end.

[0026] A short shaft 34 coaxial with the shearing wheel 3 is fixedly provided inside the shearing wheel 3, a shaft sleeve 35 is sleeved on the short shaft 34, the shaft sleeve 35 and the short shaft 34 are connected by a torsion spring 36, a paddle 37 is fixedly provided on the shaft sleeve 35, and the paddle 37 is located in the accommodating chamber 31; in the initial state of the paddle 37, the outer end of the paddle 37 is located on the inner side of the middle part of the shearing blade 32, and the paddle divides the accommodating chamber 31 into two chambers.

[0027] like Figure 1 , Figure 6 , Fig.11 , Fig.12 , Fig.13 and Fig.14 As shown, the upper pressure driving mechanism includes an upper sliding sleeve 42 fixed on the frame 1, an upper pressure rod 43 slidably connected in the upper sliding sleeve 42, and an upper step wheel 44 rotatably connected to the frame 1, the upper end of the upper pressure rod 43 abuts against the upper step wheel 44, the lower end of the upper pressure rod 43 is fixedly connected to the upper pressing plate 41, a return spring 45 is connected between the upper sliding sleeve 42 and the upper pressing plate 41, and the upper step wheel 44 has an upper step surface 46 and an upper secondary step surface 47, the distance between the upper secondary step surface 47 and the axis of the upper step wheel 44 is greater than the distance between the upper step surface 46 and the axis of the upper step wheel 44, and the connection between the upper step surface 46 and the upper secondary step surface 47 is smooth;

[0028] The downward pressure driving mechanism includes a lower sleeve 52 fixed on the frame 1, a lower pressure rod 53 slidably connected in the lower sleeve 52, and a lower step wheel 54 rotatably connected to the frame 1. The lower end of the lower pressure rod 53 abuts against the lower step wheel 54, and the upper end of the lower pressure rod 53 is fixedly connected to the lower pressing plate 51. A return spring 2 55 is connected between the lower sleeve 52 and the lower pressing plate 51. The lower step wheel 54 is provided with a lower step surface 56, a lower third step surface 58 and a lower second step surface 57 in sequence along the rotation direction of the lower step wheel 54. The distance between the step surface 57 and the axis of the lower step wheel 54 is greater than the distance between the next step surface 56 and the axis of the lower step wheel 54, the distance between the lower third step surface 58 and the axis of the lower step wheel 54 is greater than the distance between the lower second step surface 57 and the axis of the lower step wheel 54, the connection between the next step surface 56 and the lower second step surface 57 is smooth, the connection between the next step surface 56 and the lower third step surface 58 is smooth, and the connection between the lower second step surface 57 and the lower third step surface 58 is smooth.

[0029] There is a protrusion 48 at the end of the upper second step surface 47, and a push rod 61 is slidably connected inside the upper pressure rod 43. The lower end of the push rod 61 can extend out of the lower surface of the lower pressure plate 51. The upper end of the upper pressure rod 43 has two pressure arms 49. The protrusion 48 is located in the middle of the upper second step surface 47. The push rod 61 corresponds to the protrusion 48. The upper end of the push rod 61 is located between the two pressure arms 49. A return spring 62 is connected between the push rod 61 and the upper pressure rod 43.

[0030] The upper pressing rod 43 and the lower pressing rod 53 are coaxial and form an inclination angle of 45° with the middle of the horizontal plane. A receiving trough 9 located below each cavity 4 is provided on the frame 1.

[0031] like Figure 5 , Figure 7 , Figure 8 and Fig. 9 As shown, a gear 1 71 is fixedly provided on the upper step wheel 44, a gear 2 72 is fixedly provided on the lower step wheel 54, a gear 3 73 is fixedly provided on the shearing wheel 3, the lower step wheel 54 is connected to the output shaft of a driving motor, the gear 1 71, the gear 2 72 and the gear 3 73 are gears of equal specifications, and the gear 1 71, the gear 2 72 and the gear 3 73 are connected by a toothed belt 75.

[0032] An intermittent transmission mechanism is arranged between the lower pressing wheel 22 and the upper pressing wheel 21, and the intermittent transmission mechanism includes an inner gear ring 81 arranged in the lower pressing wheel 22, an intermediate sleeve 82 rotatably connected in the lower pressing wheel 22, and an intermediate shaft 83 rotatably connected in the intermediate sleeve 82, a rotating shaft 84 is rotatably connected to the upper pressing wheel 21, and the intermediate shaft 83 is fixedly connected to the rotating shaft 84, an outer gear ring 1 85 is arranged outside the upper pressing wheel 21, and an outer gear ring 2 86 meshing with the outer gear ring 1 85 is arranged outside the lower pressing wheel 22, and an upper edge of the intermediate sleeve 82 is connected to the rotating shaft 84. A sliding hole is provided in the direction perpendicular to the axis of the intermediate sleeve 82, and a latch 87 is slidably connected in the sliding hole. The outer end of the latch 87 has a locking portion that can be inserted into the tooth groove of the inner gear ring 81. The intermediate shaft 83 has an avoidance groove 88 corresponding to the inner end of the latch 87, and the angle between the two ends of the avoidance groove 88 is greater than 180°. A reset spring four is connected between the latch 87 and the intermediate sleeve 82; when the inner end of the latch 87 is located in the avoidance groove 88, the reset spring four can drive the outer end of the latch 87 to disengage from the tooth groove of the inner gear ring 81.

[0033] A gear 4 74 is fixedly disposed on the middle sleeve 82 . The gear 4 74 has the same specifications as the gear 1 71 . The toothed belt 75 simultaneously connects the gear 1 71 , the gear 2 72 , the gear 3 73 and the gear 4 74 .

[0034] The space occupied by each production unit is a flat area with a small footprint, and each production unit can be operated synchronously by the same drive motor.

[0035] After the opening of the accommodating cavity 31 is partially covered by the shearing blade 32, a ring with a gradually decreasing width is formed. The section where the shearing blade 32 is located is a section with a smaller width, and the end shrinks to zero width. The upper pressing wheel 21 and the lower pressing wheel 22 push the welding sheet strip blank released by the discharge winding drum 11. The rotation of the upper pressing wheel 21 and the lower pressing wheel 22 is paused after the length of the leather material inserted into the accommodating cavity 31 reaches a specified length. The shearing wheel 3 continues to rotate, and the blank extending into the accommodating cavity 31 is cut under the action of the shearing blade 32. In this process, the outer end of the paddle 37 is pressed against the blank under the action of the torsion spring 36 until the blank is cut. Under the action of the restoring force of the torsion spring 36, the cut blank is The blank particles are driven into the accommodating chamber 31 below the paddle 37. When the accommodating chamber 31 runs to the guide groove 33, the blank particles enter the cavity 4 along the guide groove 33. Before the blank particles enter the cavity 4, the upper pressing plate 41 is located above the cavity 4, and the upper end of the upper pressing plate abuts against the upper step surface 46, leaving space for the blank particles to enter the cavity 4. The lower pressing plate 51 closes the lower end opening of the cavity 4, and the lower end of the lower pressing plate abuts against the lower step surface 57, leaving a space in the cavity 4 with a volume larger than the volume of the finished product, so that the blank particles can smoothly enter the cavity 4; the shearing wheel 3 continues to rotate, and before the opening of the accommodating chamber 31 corresponds to the extension line of the strip blank, the upper pressing plate 41 and the lower pressing plate 51 are The state is: the upper step wheel 44 rotates to the upper second step surface 47 and contacts the upper end of the upper pressure rod 43, the upper pressing plate 41 completely closes the upper end opening of the cavity 4, and the lower step wheel 54 rotates to the lower third step surface 58 and contacts the lower end of the lower pressure rod 53, completing the pressing of the blank; the shearing wheel 3 continues to rotate, and when the opening of the accommodating cavity 31 corresponds to the extension line of the strip blank, the upper pressing wheel 21 and the lower pressing wheel 22 run again to feed the strip blank. In the process of the blank being sheared, the state of the upper pressing plate 41 and the lower pressing plate 51 is: the lower step wheel 54 contacts the next step surface 56, the lower pressing plate 51 is completely separated from the lower end opening of the cavity 4, and a space is made available to allow the blank to be formed. The finished product falls out of the space of the cavity 4, while the upper step wheel 44 is still in contact with the upper secondary step surface 47, and when it runs to the end of the upper secondary step surface 47, the push rod 61 is acted upon by the protrusion 48, so that the lower end of the push rod 61 extends out from under the lower surface of the upper pressing plate 41, and the finished product in the cavity 4 is slightly pushed to peel off the cavity 4. In addition to being acted upon by the protrusion 48, the upper end of the push rod 61 and the upper end of the upper pressing rod 43 act on the upper step surface 46 or the upper secondary step surface 47 at the same time, and in this state, the lower end surface of the push rod 61 is flush with the lower end surface of the upper pressing plate 41; the shearing wheel 3 continues to rotate, shears the blank, and enters the next production cycle, and so on.

[0036] Gear 1 71, gear 2 72, gear 3 73 and gear 4 74 are of the same specification and are continuously driven by the same toothed belt 75, ensuring that the shearing wheel 3, the upper step wheel 44, the lower step wheel 54 and the intermediate sleeve 82 run synchronously at the same angular velocity, and the same side of the toothed belt 75 is meshed with gear 1 71, gear 2 72, gear 3 73 and gear 4 74, ensuring that gear 1 71, gear 2 72, gear 3 73 and gear 4 74 rotate in the same direction. In order to prevent the strip blank from being fed when it is not aligned with the opening of the accommodating cavity 31, an intermittent transmission mechanism is set. The principle of the mechanism is that the intermediate sleeve 82 is continuously driven, and when the inner end of the latch 87 is in the avoidance groove 88, the latch 87 is acted upon by the reset spring 4 When the intermediate sleeve 82 is rotated until the inner end of the latch 87 leaves the avoidance groove 88 and is pressed against the circumference of the intermediate shaft 83, the latch 87 extends outward, and the locking portion of the outer end of the latch 87 is inserted into the tooth groove of the inner gear ring 81, so that the intermediate sleeve 82 is locked with the inner gear ring 81. In this state, the intermediate sleeve 82 rotates synchronously with the lower pressure wheel 22, and the outer gear ring 1 85 on the upper pressure wheel 21 is meshed with the outer gear ring 2 86 on the lower pressure wheel 22, so that the strip blank is pushed again after a period of rest.

[0037] It can be seen that the equipment has strong synergy, the blank particles are sheared and fed in order, and the pressing process fully considers the smooth feeding and demolding, ensuring that the blank particles are sheared and pressed one by one with high efficiency.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A cutting device on a welding sheet production equipment, characterized in that: The cutting device comprises a frame and a shearing wheel (3) rotatably connected to the frame (1); the shearing wheel (3) has a receiving cavity (31) penetrating the circumference of the shearing wheel (3); the receiving cavity (31) has an arched shearing blade (32) at an opening on the circumference of the shearing wheel (3); and a material guide groove (33) corresponding to the opening of the receiving cavity (31) is arranged below the shearing wheel (3); The shear blade (32) comprises two side blades symmetrically distributed on both sides of the opening of the accommodating cavity (31), and the distance between the two side blades gradually decreases to zero from one end close to the running direction of the shear wheel (3) to the other end; A short shaft (34) coaxial with the shearing wheel (3) is fixedly arranged inside the shearing wheel (3), a shaft sleeve (35) is sleeved on the short shaft (34), the shaft sleeve (35) and the short shaft (34) are connected via a torsion spring (36), a paddle (37) is fixedly arranged on the shaft sleeve (35), and the paddle (37) is located in the accommodating cavity (31); in an initial state, the outer end of the paddle (37) is located on the inner side of the middle of the shearing blade (32), and the paddle divides the accommodating cavity (31) into two chambers; an intermittent transmission mechanism is provided in order to prevent the strip blank from being fed when it is not aligned with the opening of the accommodating cavity (31).

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