Pull rod type button sewing machine

Abstract

The pull rod type button sewing machine comprises a machine frame and a machine head connected to the machine frame in a sliding mode, a rack plate and a belt pressing beam assembly are installed on the machine frame, and a nail penetrating and bending mechanism and a nail pressing mechanism are arranged in the machine head. According to the pull rod type button sewing machine, double rows of button nails are used as a whole to sew buttons instead of sew buttons one by one, the displacement distance of the tooth supporting displacement mechanism every time is L1 + L2, the nail pressing hammer and the nail penetrating hammer are arranged in the machine head, the distance between two first special-shaped bosses on the nail penetrating hammer is equal to the distance L1 of the double rows of the buttons, and the distance between the two first special-shaped bosses on the nail pressing hammer and the nail penetrating hammer is equal to the distance L2 of the double rows of the buttons. The two first special-shaped bosses can enable the two clasp nails of one belt buckle to penetrate through the belt and be bent through one-time action. The distance between the two second special-shaped bosses on the nail pressing hammer is equal to the first distance L1, and the two special-shaped bosses can flatten the two clasp nails with the clasps through one-time action. And the adjacent pitch of the nail pressing hammer and the nail penetrating hammer is equal to L2, so that double-row button sewing can be realized.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a belt fastener for a belt conveyor, and especially to a pull-rod type fastener machine. Background Art

[0002] The connection methods of the belt joints of belt conveyors mainly include chemical bonding and mechanical connection with belt fasteners. The mechanical connection method is to nail U-shaped fasteners into the ends of the conveyor belt, and then butt the U-shaped fasteners on both sides of the belt and insert steel wires into them to achieve the connection of the belt. Belt fasteners can be fastened with a fastener machine. The fastener machine in the prior art includes a frame and a machine head slidably connected to the frame. A rack plate and a belt pressing beam assembly are installed on the frame. A nail-piercing and bending mechanism, a nail-pressing mechanism, a tooth-support shifting mechanism and a module are arranged in the machine head. The nail-piercing and bending mechanism consists of a right pull rod, a right connecting rod assembly and a nail-piercing hammer. The right pull rod is connected to the nail-piercing hammer through the right connecting rod assembly. The nail-pressing mechanism consists of a left pull rod, a left connecting rod assembly and a nail-pressing hammer. The left pull rod is connected to the nail-pressing hammer through the left connecting rod assembly. The tooth-support shifting mechanism includes a tooth support and a tooth-support connecting rod mechanism. The tooth support is connected to the nail-pressing hammer through the tooth-support connecting rod mechanism. When in use, the right pull rod is pulled to perform the nail-piercing and bending actions, and then the left pull rod is pulled to perform the nail-pressing action. At the same time, the tooth-support shifting mechanism pushes the machine head to the right by a pitch. However, in the prior art, some belts are connected by multiple groups of double-row buckle nails. The double-row buckle nails are composed of two U-shaped fasteners arranged horizontally, with a total of four nail feet. As Figure 1 shown, the distance between the two U-shaped fasteners of a double-row buckle nail is L1, and the distance between adjacent double-row buckle nails is L2. The distances both include the width of a nail foot itself, and L1≠L2. In the prior art, the fastener machine can nail one fastener at a time, and the moving distance of the tooth-support shifting mechanism is equal each time, which is one pitch. Therefore, the pull-rod type fastener machine in the prior art cannot fasten this type of belt fastener. Summary of the Invention

[0003] The purpose of the utility model is to provide a pull-rod type fastener machine, and the pull-rod type fastener machine is to solve the technical problem that the pull-rod type fastener machine in the prior art cannot fasten the above-mentioned type of belt fastener.

[0004] A pull-rod type fastener machine of the utility model includes a frame and a machine head slidably connected to the frame. A rack plate and a belt pressing beam assembly are installed on the frame. A nail-piercing and bending mechanism, a nail-pressing mechanism and a tooth-support shifting mechanism are arranged in the machine head. The nail-piercing and bending mechanism includes a right pull rod, a right connecting rod assembly and a nail-piercing hammer. The right pull rod is connected to the nail-piercing hammer through the right connecting rod assembly. The nail-pressing mechanism includes a left pull rod, a left connecting rod assembly and a nail-pressing hammer. The left pull rod is connected to the nail-pressing hammer through the left connecting rod assembly. The tooth-support shifting mechanism includes a tooth support and a tooth-support connecting rod mechanism. The tooth support is connected to the nail-pressing hammer through the tooth-support connecting rod mechanism;

[0005] There are two juxtaposed first special-shaped bosses provided on the nail-piercing hammer, and two juxtaposed second special-shaped bosses provided on the nail-pressing hammer. The distance between the two second special-shaped bosses is a first distance, and the distance between the two first special-shaped bosses is equal to the first distance. The distance between the second special-shaped boss on the right side of the nail-pressing hammer and the first special-shaped boss on the left side of the nail-piercing hammer is a second distance, and the second distance is greater than or less than the first distance. The distance between the nail-pressing hammer and the nail-piercing hammer is equal to the sum of the first distance and the second distance. The one-time displacement distance of the tooth-support shifting mechanism is equal to the sum of the first distance and the second distance;

[0006] There are multiple groups of special-shaped holes provided on the rack plate. Any group of the special-shaped holes each includes a first special-shaped hole and a second special-shaped hole arranged side by side. The first special-shaped hole and the second special-shaped hole cooperate with the two first special-shaped bosses and the two second special-shaped bosses. The width direction of the first special-shaped hole and the second special-shaped hole is perpendicular to the length direction of the rack plate. The width of the first special-shaped hole is greater than the width of the second special-shaped hole. There is a flange provided on the tooth support, and the width of the flange is less than the width of the first special-shaped hole and greater than the width of the second special-shaped hole.

[0007] Furthermore, a positioning pin is juxtaposed on one side of the second special-shaped boss on the nail-pressing hammer. The head end of the positioning pin is provided with a chamfer or a fillet. On the rack plate, positioning holes cooperating with the positioning pin are respectively provided outside any group of the special-shaped holes.

[0008] Furthermore, a left-right pull rod interlocking mechanism is provided in the machine head. The left-right pull rod interlocking mechanism includes a left shaft rotating block, a right shaft rotating block and an interlocking block. The left shaft rotating block, the right shaft rotating block and the interlocking block are all rotationally connected to the machine frame through a rotating shaft. A torsion spring is provided on the rotating shaft connected to the interlocking block, and the torsion spring biases the interlocking block clockwise. The left shaft rotating block and the right shaft rotating block are coaxial. The interlocking block is located below the left shaft rotating block. The left shaft rotating block and the right shaft rotating block are respectively connected to the left pull rod and the right pull rod. The interlocking block is provided with a left leg and a right leg. The left leg and the right leg are arranged at intervals along the axial and circumferential directions of the interlocking block. The left shaft rotating block and the right shaft rotating block are fan-shaped. The cross section of the left leg is provided with an arc-shaped concave surface, and the cross section of the left shaft rotating block is provided with an arc-shaped convex surface cooperating with the arc-shaped concave surface. A clamping groove cooperating with the right shaft rotating block is provided on the right leg.

[0009] Furthermore, a module height adjusting mechanism is provided in the machine head. The module height adjusting mechanism includes an eccentric wheel mechanism. The eccentric wheel mechanism includes an eccentric shaft, a module, a module swing rod and a rotating handle. The module is located above the nail-piercing and nail-bending mechanism. The rotating handle is located outside the machine head. The rotating handle is connected to the eccentric shaft. The eccentric shaft is connected to the module swing rod. A groove is provided in the module. The end of the module swing rod is inserted into the groove of the module. The module and the machine head form a sliding pair along the height direction.

[0010] Compared with the prior art, the effects of the present utility model are positive and obvious. The pull-rod type button nailing machine of the present utility model nails double-row buttons as a whole instead of nailing buttons one by one. The distance of each shift of the stay tooth shifting mechanism is L1 + L2. The arrangement of the nail pressing hammer, the nail piercing hammer and inside the machine head, the distance between the two first special-shaped convex platforms on the nail piercing hammer is equal to the double-row button distance L1. With one action, the two first special-shaped convex platforms can respectively pass the two buttons of a buckle through the belt and bend them. The distance between the two second special-shaped convex platforms on the nail pressing hammer is equal to the first distance L1. With one action, the two special-shaped convex platforms can respectively flatten the two buttons of a buckle. And the adjacent pitch between the nail pressing hammer and the nail piercing hammer is equal to L2, so that double-row buttons can be nailed. Description of the Drawings

[0011] Figure 1 Schematic diagram of double-row buttons.

[0012] Figure 2 Schematic diagram of the nail piercing and bending mechanism, nail pressing mechanism and stay tooth shifting mechanism in a pull-rod type button nailing machine of the present utility model.

[0013] Figure 3 Schematic diagram of the rack plate in a pull-rod type button nailing machine of the present utility model.

[0014] Figure 4 Front view schematic diagram of the nail pressing hammer in a pull-rod type button nailing machine of the present utility model.

[0015] Figure 5 Top view schematic diagram of the nail pressing hammer in a pull-rod type button nailing machine of the present utility model.

[0016] Figure 6 Schematic diagram of the left and right pull-rod interlocking mechanism in a pull-rod type button nailing machine of the present utility model.

[0017] Figure 7 First use state schematic diagram of the left and right pull-rod interlocking mechanism in a pull-rod type button nailing machine of the present utility model.

[0018] Figure 8 Second use state schematic diagram of the left and right pull-rod interlocking mechanism in a pull-rod type button nailing machine of the present utility model.

[0019] Figure 9 Schematic diagram of the interlocking block in a pull-rod type button nailing machine of the present utility model.

[0020] Figure 10 Schematic diagram of the left shaft rotating block in a pull-rod type button nailing machine of the present utility model.

[0021] Figure 11 Schematic diagram of the right shaft rotating block in a pull-rod type button nailing machine of the present utility model.

[0022] Figure 12 This is the first schematic diagram of the module height adjustment mechanism in a pull-rod type button nailing machine of the present utility model.

[0023] Figure 13 This is the second schematic diagram of the module height adjustment mechanism in a pull-rod type button nailing machine of the present utility model. Detailed implementation manners

[0024] The present utility model will be further described below in conjunction with embodiments. However, the present utility model is not limited to these embodiments. Any similar structure and its similar variations of the present utility model shall fall within the protection scope of the present utility model. The use of directions such as up, down, front, back, left, and right in the present utility model is only for the convenience of clear description and does not limit the technical solution of the present utility model.

[0025] As Figures 2 - 13 shown, a pull-rod type button nailing machine of the present utility model includes a frame and a machine head slidably connected to the frame. A rack plate 1 and a press belt beam assembly (not shown in the figure) are installed on the frame. A nail piercing and bending mechanism, a nail pressing mechanism, and a stay tooth shifting mechanism are provided in the machine head. The nail piercing and bending mechanism includes a right pull rod (not shown in the figure), a right connecting rod assembly, and a nail piercing hammer 2. The right pull rod is connected to the nail piercing hammer 2 through the right connecting rod assembly. The nail pressing mechanism includes a left pull rod (not shown in the figure), a left connecting rod assembly, and a nail pressing hammer 3. The left pull rod is connected to the nail pressing hammer 3 through the left connecting rod assembly. The stay tooth shifting mechanism includes a stay tooth 4 and a stay tooth connecting rod mechanism 5. The stay tooth 4 is connected to the nail pressing hammer 3 through the stay tooth connecting rod mechanism 5;

[0026] Two juxtaposed first special-shaped convex platforms 6 are provided on the nail piercing hammer 2, and two juxtaposed second special-shaped convex platforms 7 are provided on the nail pressing hammer 3. The distance between the two second special-shaped convex platforms 7 is a first distance (equal to the distance L1 between two U-shaped nails, including the width of one second special-shaped convex platform 7 itself). The distance between the two first special-shaped convex platforms 6 is equal to the first distance. The distance between the second special-shaped convex platform 7 on the right side of the nail pressing hammer 3 and the first special-shaped convex platform 6 on the left side of the nail piercing hammer 2 is a second distance (equal to the distance L2 between two groups of double-row nails, including the width of the second special-shaped convex platform 7 on the right side of the nail pressing hammer 3 itself). The second distance is greater than or less than the first distance (L1≠L2). The distance between the nail pressing hammer 3 and the nail piercing hammer 2 is equal to the sum of the first distance and the second distance (L1 + L2) (the distance between the nail pressing hammer 3 and the nail piercing hammer 2 includes the width of the nail pressing hammer 3 itself). The one-time displacement distance of the stay tooth shifting mechanism is equal to the sum of the first distance and the second distance (L1 + L2);

[0027] A plurality of groups of special-shaped holes are provided on the rack plate 1. Any group of the special-shaped holes respectively includes a first special-shaped hole 8 and a second special-shaped hole 9 arranged side by side. The first special-shaped hole 8 and the second special-shaped hole 9 cooperate with two first special-shaped bosses 6 and two second special-shaped bosses 7. The width direction of the first special-shaped hole 8 and the second special-shaped hole 9 is perpendicular to the length direction of the rack plate 1. The width of the first special-shaped hole 8 is greater than the width of the second special-shaped hole 9. A flange is provided on the support tooth 4, and the width of the flange is less than the width of the first special-shaped hole 8 and greater than the width of the second special-shaped hole 9.

[0028] Further, a positioning pin 10 is arranged side by side on one side of the second special-shaped boss 7 on the pressing nail hammer 3. The head end of the positioning pin 10 is provided with a chamfer or a fillet. Positioning holes 11 cooperating with the positioning pin 10 are respectively arranged on the rack plate 1 outside any group of special-shaped holes.

[0029] Further, a left and right pull rod interlocking mechanism is arranged in the machine head. The left and right pull rod interlocking mechanism includes a left shaft rotating block 12, a right shaft rotating block 13 and an interlocking block 14. The left shaft rotating block 12, the right shaft rotating block 13 and the interlocking block 14 are all rotationally connected to the frame through a rotating shaft. A torsion spring is arranged on the rotating shaft connected to the interlocking block 14, and the torsion spring biases the interlocking block 14 clockwise. The left shaft rotating block 12 and the right shaft rotating block 13 are coaxial. The interlocking block 14 is located below the left shaft rotating block 12. The left shaft rotating block 12 and the right shaft rotating block 13 are respectively connected to the left pull rod and the right pull rod. Left legs 15 and right legs 16 are arranged on the interlocking block 14, and the left legs 15 and the right legs 16 are arranged at intervals along the axial and circumferential directions of the interlocking block 14. The left shaft rotating block 12 and the right shaft rotating block 13 are fan-shaped. An arc concave surface 17 is arranged on the cross section of the left leg 15, and an arc convex surface 171 cooperating with the arc concave surface 17 is arranged on the cross section of the left shaft rotating block 12. A clamping groove 18 cooperating with the right shaft rotating block 13 is arranged on the right leg 16.

[0030] Further, a module height adjusting mechanism is arranged in the machine head. The module height adjusting mechanism includes an eccentric wheel mechanism. The eccentric wheel mechanism includes an eccentric shaft 19, a module 20, a module swing rod 21 and a rotating handle 22. The module 20 is located above the nail piercing and bending mechanism. The rotating handle 22 is located outside the machine head. The rotating handle 22 is connected to the eccentric shaft 19. The eccentric shaft 19 is connected to the module swing rod 21. A groove is arranged in the module 20, and the end of the module swing rod 21 is inserted into the groove of the module 20. The module 20 and the machine head form a sliding pair along the height direction.

[0031] Specifically, the pressing belt beam assembly is located between the module 20 and the nail piercing and bending mechanism and is used for pressing the conveyor belt.

[0032] Specifically, the pressing beam assembly, right pull rod, right connecting rod assembly, left pull rod, left connecting rod assembly, connecting rod mechanism and their connection relationships in this embodiment all adopt well-known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.

[0033] Working principle of this embodiment: When using the button sewing machine, first put the button sewing machine on the rack bar 1, insert the U-shaped nails with buttons into the rack bar 1, and then loosen the pressing beam on the machine frame and feed the conveyor belt into the button. When starting to sew buttons, move the machine head to the starting button sewing position and alternately push and pull the left pull rod and the right pull rod to complete the button sewing operation.

[0034] The pull rod type button sewing machine of the present utility model sews double-row buttons as a whole instead of one by one. The displacement distance of the tooth support shifting mechanism each time is L1 + L2. The arrangement of the pressing nail hammer 3, the nail piercing hammer 2 and inside the machine head is as Figure 2 shown. The distance between the two first special-shaped bosses 6 on the nail piercing hammer 2 is equal to the double-row nail distance L1. In one action, the two first special-shaped bosses 6 can respectively pass the two button nails of a button through the belt and bend them. The distance between the two second special-shaped bosses 7 on the pressing nail hammer 3 is equal to the first distance L1. In one action, the two special-shaped bosses respectively flatten the two button nails of a button. And the adjacent pitch between the pressing nail hammer 3 and the nail piercing hammer 2 is equal to L2, so that double-row button sewing can be realized.

[0035] Similarly, the arrangement of the special-shaped holes on the rack bar 1 should also be consistent with the button, as Figure 3 shown. Among them, the dimensions L1 and L2 of the button, the machine head and the rack should be unified to realize the button sewing work.

[0036] A positioning pin 10 for pre-positioning is added to the pressing nail hammer 3. The head of the positioning pin 10 needs to be chamfered or rounded. Similarly, a positioning hole 11 matching the positioning pin 10 is correspondingly added at the corresponding position on the rack bar 1 to achieve precise positioning, which can prevent the problem that when sewing 2 U-shaped nails at a time with a large pitch, the second special-shaped boss 7 of the pressing nail hammer 3 as a positioning function sometimes does not enter the special-shaped hole of the rack bar 1 when the tooth support 4 shifts.

[0037] When the tooth support 4 shifts, the flange of the tooth support 4 uses a special-shaped hole on the rack bar 1 as a positioning. The present utility model lengthens one of the special-shaped holes on the rack bar 1, as Figure 3 shown, so that the flange of the tooth support 4 can enter the longer first special-shaped hole 8 and cannot enter the shorter second special-shaped hole 9, playing a function of preventing misalignment.

[0038] In order to prevent misoperation of the left and right handles, a left and right pull rod interlocking mechanism is arranged inside the machine head. As Figures 6 - 11As shown in the figure, when the left pull rod is pulled, the button sewing machine is in the displacement stage, and the right handle needs to be self-locked. The left pull rod drives the left shaft rotating block 12 to rotate clockwise. The arc convex surface 171 and the arc concave surface 17 cooperate to drive the left leg 15 to rotate counterclockwise. After the right leg 16 rotates counterclockwise by the same angle, the card slot 18 of the right leg 16 cooperates with the right shaft rotating block 13 to be clamped, so that the right shaft rotating block 13 is in a clamped state and cannot rotate clockwise. Therefore, the right pull rod cannot be pulled, realizing the self-locking of the right pull rod. When the right pull rod is pulled, the button sewing machine is in the stage of threading and bending the nail, and the left pull rod needs to be self-locked. The right pull rod drives the right shaft rotating block 13 to rotate clockwise to the left side of the right leg 16. The right shaft rotating block 13 blocks the right leg 16 from rotating counterclockwise, so that the interlocking block 14 and the left leg 15 cannot rotate counterclockwise, and further the left shaft rotating block 12 cannot rotate clockwise. Therefore, the left pull rod cannot be pulled, realizing the self-locking of the left pull rod.

[0039] Module 20 undertakes the functions of threading, pulling the nail and pressing the button in the pull rod type button sewing machine. As Figure 12 and Figure 13 shown, in order to facilitate the adjustment of the button sewing thickness, an eccentric wheel mechanism is provided to adjust the height of module 20. When the button sewing thickness needs to be adjusted, rotate the rotating handle 22 to drive the eccentric shaft 19 to rotate, and then drive the module swing rod 21 to swing, so as to adjust the height of module 20. When the rotating handle 22 is in different positions, module 20 is at different heights, thus realizing the adjustment of the button sewing thickness.

Claims

1. A pull-rod type button sewing machine, characterized in that: It includes a frame and a machine head slidably connected to the frame, a rack plate and a belt pressing beam assembly are installed on the frame, a nail inserting and bending mechanism, a nail pressing mechanism and a tooth support displacement mechanism are arranged in the machine head, the nail inserting and bending mechanism includes a right pull rod, a right connecting rod assembly and a nail inserting hammer, the right pull rod is connected to the nail inserting hammer through the right connecting rod assembly, the nail pressing mechanism includes a left pull rod, a left connecting rod assembly and a nail pressing hammer, the left pull rod is connected to the nail pressing hammer through the left pull rod assembly, the tooth support displacement mechanism includes a tooth support and a tooth support connecting rod mechanism, and the tooth support is connected to the nail pressing hammer through the tooth support connecting rod mechanism; The nail piercing hammer is provided with two parallel first special-shaped bosses, and the nail pressing hammer is provided with two parallel second special-shaped bosses, the spacing between the two second special-shaped bosses is the first spacing, the spacing between the two first special-shaped bosses is equal to the first spacing, the spacing between the second special-shaped boss on the right side of the nail pressing hammer and the first special-shaped boss on the left side of the nail piercing hammer is the second spacing, the second spacing is greater than or less than the first spacing, the spacing between the nail pressing hammer and the nail piercing hammer is equal to the sum of the first spacing and the second spacing, and the one-time displacement distance of the tooth support displacement mechanism is equal to the sum of the first spacing and the second spacing; The rack plate is provided with multiple groups of special-shaped holes, and any group of the special-shaped holes each includes a first special-shaped hole and a second special-shaped hole arranged side by side, the first special-shaped hole and the second special-shaped hole are matched with two first special-shaped bosses and two second special-shaped bosses, the width direction of the first special-shaped hole and the second special-shaped hole is perpendicular to the length direction of the rack plate, the width of the first special-shaped hole is greater than the width of the second special-shaped hole, and a flange is provided on the support tooth, and the width of the flange is less than the width of the first special-shaped hole and greater than the width of the second special-shaped hole.

2. A pull-rod type button sewing machine according to claim 1, characterized in that: A locating pin is arranged in parallel on one side of the second special-shaped boss on the nail pressing hammer, and the head end of the locating pin is chamfered or rounded. The outer side of any group of special-shaped holes on the rack plate is respectively provided with a locating hole matching with the locating pin.

3. The pull-rod type button sewing machine according to claim 1, characterized in that: The machine head is provided with a left-right pull rod interlocking mechanism, which includes a left-axis rotating block, a right-axis rotating block and an interlocking block. The left-axis rotating block, the right-axis rotating block and the interlocking block are all rotatably connected to the frame through a rotating shaft. A torsion spring is provided on the rotating shaft connected to the interlocking block, and the torsion spring biases the interlocking block clockwise. The left-axis rotating block is coaxial with the right-axis rotating block, and the interlocking block is located below the left-axis rotating block. The left-axis rotating block and the right-axis rotating block are respectively connected to the left pull rod and the right pull rod. A left support leg and a right support leg are provided on the interlocking block, and the left support leg and the right support leg are arranged at intervals along the axial and circumferential directions of the interlocking block. The left-axis rotating block and the right-axis rotating block are fan-shaped, and the cross-section of the left support leg is provided with an arc-shaped concave surface, and the cross-section of the left-axis rotating block is provided with an arc-shaped convex surface matching the arc-shaped concave surface, and the right support leg is provided with a slot matching the right-axis rotating block.

4. The pull-rod type button sewing machine according to claim 1, characterized in that: A module height adjustment mechanism is provided in the machine head, and the module height adjustment mechanism includes an eccentric wheel mechanism, and the eccentric wheel mechanism includes an eccentric shaft, a module, a module rocker rod and a rotating handle. The module is located above the nail threading and nail bending mechanism, and the rotating handle is located outside the machine head. The rotating handle is connected to the eccentric shaft, and the eccentric shaft is connected to the module rocker rod. A groove is provided in the module, and the end of the module rocker rod is inserted in the groove of the module. The module and the machine head form a sliding pair along the height direction.

Images