Punching device for pattern machine

Abstract

The present invention discloses a punching device for a pattern machine, the main points of which are: it includes an upper punch assembly and a lower punch assembly. The upper punch assembly includes a machine head seat, a driving device, a guide device, a punch seat and a punch needle. The driving device is arranged on the machine head seat, and the driving device drives the punch seat to move up and down along a straight line through the guide device. The punch needle is detachably fixedly connected to the punch seat and extends downward. The lower punch assembly includes a lower die knife. The lower die knife is arranged in the sewing table of the machine head of the pattern machine, and its upper surface is flush with the upper surface of the sewing table. The punch needle hole is provided with a cylindrical section, and the punch needle extends into the punch needle hole to form a shear structure with the hole wall.

Description

Technical Field

[0001] The invention relates to the technical field of sewing machines, in particular to a punching device for a pattern sewing machine. Background Art

[0002] Pattern machines are sewing equipment used in the production process of sewing products such as bags, leather, shoes and hats, and clothing. They can realize traditional hand-made patterns at high speed and high efficiency, and can also achieve the perfection of multi-level unified integration that cannot be achieved by hand-made patterns. Therefore, they are widely used in bag factories, leather factories, shoe factories, and clothing processing factories. The basic working principle of the pattern machine is to use the X-axis and Y-axis drive mechanism to drive the sewing workpiece to move on the working platform of the sewing mechanism according to the preset route. During the movement, the sewing workpiece is sewn by the sewing machine head of the sewing mechanism to sew the corresponding pattern on it. When processing shoes and hats, it is sometimes necessary to punch round holes on them. The round holes on clothing and shoes are used to install buttons and rivets. The round holes on hats can be used to install rivets or as ventilation holes. When used as ventilation holes, the edges around the holes must be locked (also called keyholes) to prevent the fabric around the holes from spreading. After locking the edges, the corresponding flower shapes will be sewn to play a role in beautiful decoration. The usual practice now is to sew the buttonholes with a pattern machine first, then take them off the pattern machine and punch them on a corresponding punching machine. It is difficult for workers to position them during operation, and they are prone to punching off-center. The quality of the punching cannot be guaranteed, and the efficiency is too low. Summary of the invention

[0003] The object of the present invention is to provide a punching device for a pattern machine with simple structure and high efficiency.

[0004] The basic technical scheme for achieving the purpose of the present invention is: a punching device for a pattern machine, which has the following structural features: it includes an upper punch assembly and a lower die assembly. The upper punch assembly includes a machine head seat, a driving device, a guide device, a punch seat and a punch needle. The driving device is arranged on the machine head seat, and the driving device drives the punch seat to move up and down along a straight line through the guide device. The punch needle is detachably fixedly connected to the punch seat and extends downward. The lower die assembly includes a lower die knife. The lower die knife is arranged in the sewing table of the machine head of the pattern machine, and its upper surface is flush with the upper surface of the sewing table. The punch needle hole is provided with a cylindrical section, and the punch needle extends into the punch needle hole to form a shear structure with the hole wall.

[0005] A technical solution based on the above basic technical solution is: the driving device is a cylinder, the piston rod of which extends downward, and a Y-shaped cylinder joint is fixed to the lower end of the piston rod.

[0006] The technical solution based on the above-mentioned corresponding technical solutions is: the guide device includes a flange seat, a flange linear bearing and an optical axis guide rail. The flange seat is fixedly arranged in the machine head seat. The flange linear bearing is fixedly arranged on the flange seat, and its axis is vertically arranged in the up-down direction. The optical axis guide rail is slidably arranged in the flange linear bearing in the up-down direction. The upper end of the optical axis guide rail is hingedly connected to the Y-type cylinder joint, and the lower end extends out of the machine head seat. The punch seat is fixedly arranged on the lower end of the optical axis guide rail.

[0007] The technical solution based on the above corresponding technical solutions is: the punching pin hole of the lower die cutter of the lower punch assembly is also provided with a frustum section, which is located below the cylindrical section and communicated with the cylindrical section.

[0008] The technical solution based on the above-mentioned corresponding technical solutions is: the lower die knife of the lower punch assembly is symmetrically provided with arcuate air suction grooves running through the upper and lower sides thereof. The middle part of the lower die knife is provided with an air flow channel running through the front and rear thereof and opening downward, and the punching needle hole and the air suction groove are both connected to the air flow channel.

[0009] The technical scheme based on the above-mentioned corresponding technical schemes is: the lower punch assembly also includes a lower knife seat plate, a die knife seat, a knife seat cushion block and an air pipe joint. The lower knife seat plate is horizontally fixedly arranged on the front part of the lower part of the machine head along the left and right directions, and is located on the lower side of the sewing table of the machine head. A die knife seat hole that runs through it from top to bottom is provided on the front middle part of the sewing table. The lower knife seat plate is provided with an air pipe interface that runs through it from top to bottom, and the air pipe joint is screwed and fixed on the air pipe interface from bottom to top, and is sealed and connected with the air pipe interface. The knife seat cushion block is provided with a first through hole that runs through it from top to bottom. The knife seat cushion block is fixedly arranged on the lower knife seat plate, and the first through hole is sealed and connected with the air pipe interface of the lower knife seat plate. A rectangular mounting hole with an opening upward is provided in the middle part of the die knife seat, and a second through hole that runs through the die knife seat from top to bottom and is connected with the mounting hole is provided in the middle part of the die knife seat. The die knife seat is fixedly arranged on the knife seat cushion block, and its second through hole is sealed and connected with the first through hole of the knife seat cushion block. The die cutter seat is located in the die cutter seat hole of the sewing table, and its upper surface is flush with the upper surface of the sewing table. The lower die cutter is fixed on the middle part of the mounting hole of the die cutter seat, and the upper surface of the lower die cutter is flush with the upper surface of the die cutter seat, and the air flow channel of the lower die cutter is connected with the second through hole of the die cutter seat.

[0010] The technical solution based on the above-mentioned corresponding technical solutions is that the lower punch assembly also includes a die cutter fixing block. The left and right sides of the lower part of the lower die cutter are provided with outwardly protruding clamping bosses. There are two die cutter fixing blocks, which are respectively fixed on the left and right parts of the mounting hole of the die cutter seat, and the two clamping bosses of the lower die cutter are respectively limited and fixed from above, so that the lower die cutter is fixed on the middle part of the mounting hole of the die cutter seat.

[0011] The present invention has the following beneficial effects: (1) The punching device for the pattern machine of the present invention has a simple structure and is installed on the pattern machine when in use. The pattern machine first performs hemming and pattern sewing around the area to be punched, and then punches the area to be punched immediately after sewing, which greatly improves the work efficiency and hemming quality.

[0012] (2) The punching device for the pattern machine of the present invention is provided with a guide device to ensure that the punch needle moves in a straight line in the up and down directions to avoid collision with the lower die knife and cause damage; it is driven by a cylinder and moves quickly, which is beneficial to improving the flatness of the incision and making the punching more round.

[0013] (3) The upper end of the optical axis guide rail of the punching device for the pattern machine of the present invention is hingedly connected to the Y-type cylinder joint, which is conducive to reducing assembly requirements, facilitating assembly, and improving the production and assembly efficiency of the equipment.

[0014] (4) The lower punch assembly of the punching device for the pattern machine of the present invention sucks air through the dust suction device connected to the air pipe joint, thereby generating corresponding suction force at the punching needle hole and the suction groove of the lower die knife, which can make the cloth better adsorbed and fixed on the upper surface of the lower die knife and keep it flat, which is conducive to improving the flatness of the incision. The washed cloth is sucked and collected by the dust suction device, which greatly improves the cleanliness of the working environment and avoids the pollution of the equipment and the environment by cloth scraps.

[0015] (5) The punching needle hole of the lower punch assembly of the punching device for the pattern machine of the present invention includes a cylindrical section located at the upper part and a truncated cone section located at the lower part. The cloth can be easily dropped after being cut off and will not accumulate and cause blockage.

[0016] (6) The lower end of the punching needle of the punching device for the pattern machine of the present invention is provided with a groove with an inverted V-shaped cross-section running through both ends along its radial direction, which is conducive to tightening the cloth inward during the punching process, facilitating cutting and ensuring the punching effect.

[0017] (7) The punching needle and the lower die knife of the punching device for the pattern machine of the present invention can be replaced, which can meet the needs of holes of different sizes and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the punching device of the present invention when it is applied to a pattern machine.

[0019] Figure 2 for Figure 1 Schematic diagram of the left side.

[0020] Figure 3 For Figure 1 Schematic diagram when viewed from the upper right front.

[0021] Figure 4It is a schematic diagram of the structure of the upper punch assembly of the punching device.

[0022] Figure 5 for Figure 4 Schematic diagram of the left side.

[0023] Figure 6 For Figure 4 Schematic diagram when viewed from the lower left front.

[0024] Figure 7 For Figure 4 Schematic diagram when viewed from the upper left rear.

[0025] Figure 8 It is a schematic diagram of the structure of the lower punch assembly of the punching device.

[0026] Fig. 9 For Figure 8 Schematic diagram when viewed from the upper right front.

[0027] Fig.10 Schematic diagram of the lower punch assembly after removing the lower tool holder plate.

[0028] Fig.11 for Fig.10 Schematic top view of .

[0029] Fig.12 for Fig.11 AA section view in .

[0030] Fig.13 For Fig.10 Schematic diagram when viewed from the upper right front.

[0031] Fig.14 For Fig.10 An enlarged schematic diagram of the lower die knife when viewed from the upper left front.

[0032] Fig.15 For Fig.10 An enlarged schematic diagram of the lower die knife when viewed from the lower right front.

[0033] The reference numerals in the accompanying drawings are:

[0034] Upper punch assembly 1, headstock 1-1,

[0035] Driving device 1-2, Y-type cylinder joint 1-21,

[0036] Guide device 1-3, flange seat 1-31, flange linear bearing 1-32, optical axis guide rail 1-33,

[0037] Punch seat 1-4,

[0038] Punch pin 1-5, slot 1-51,

[0039] Lower punch assembly 2, lower knife seat plate 2-1,

[0040] Lower die knife 2-2, punching needle hole 2-21, air suction groove 2-22, clamping boss 2-23, air flow channel 2-24,

[0041] Mold knife seat 2-3, second through hole 2-31,

[0042] The knife seat pad 2-4, the first through hole 2-41,

[0043] Die knife fixing block 2-5,

[0044] Trachea connector 2-6,

[0045] Pattern machine 10, machine head 10-1, needle seat 10-11, sewing table 10-12. DETAILED DESCRIPTION

[0046] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings. Figure 1 The direction shown is carried out, that is, Figure 1 The up, down, left, and right directions shown are the up, down, left, and right directions described. Figure 1 The direction is forward, away from Figure 1 The side that is at the rear is the one at the rear.

[0047] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0048] It should be understood that terms such as "upper", "lower", "inside" and "outside" to indicate directions or positional relationships are based on the positional relationships described in the drawings and are only used to facilitate the description of the present invention or simplify the description, rather than to indicate a specific direction that must be possessed.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] (Example 1)

[0051] See Figures 1 to 15 The punching device for the pattern machine of the present invention comprises an upper punch assembly 1 and a lower punch assembly 2.

[0052] See Figures 1 to 7 The upper punch assembly 1 includes a head seat 1-1, a driving device 1-2, a guiding device 1-3, a punch seat 1-4 and a punch needle 1-5. The head seat 1-1 is fixedly arranged on the front part of the head 10-1 of the pattern machine 10. The driving device 1-2 is a cylinder, and the cylinder adopts SMC's CQ2B32-50DMZ cylinder, whose piston rod extends downward, and a Y-type cylinder joint 1-21 is fixed on the lower end of the piston rod. The guiding device 1-3 includes a flange seat 1-31, a flange linear bearing 1-32 and an optical axis guide rail 1-33. The flange seat 1-31 is fixedly arranged in the head seat 1-1. The flange linear bearing 1-32 is fixedly arranged on the flange seat 1-31, and its axis is vertically arranged in the up-down direction. The optical axis guide rail 1-33 is slidably arranged in the flange linear bearing 1-32 in the up-down direction. The upper end of the optical axis guide rail 1-33 is hingedly connected to the Y-type cylinder joint 1-21, and the lower end extends out of the machine head seat 1-1. The optical axis guide rail 1-33 is driven by the driving device 1-2 to move up and down. The punch seat 1-4 is fixedly set on the lower end of the optical axis guide rail 1-33. The punch needle 1-5 is detachably fixedly connected to the punch seat 1-4 and extends downward. The lower end of the punch needle 1-5 is provided with a groove 1-51 with an inverted V-shaped cross section running through both ends along its radial direction, which is conducive to tightening the cloth inward during the punching process, facilitating cutting and ensuring the punching effect.

[0053] See Figures 1 to 3 and Figures 8 to 15 The lower punch assembly 2 includes a lower knife seat plate 2-1, a lower die knife 2-2, a die knife seat 2-3, a knife seat cushion block 2-4, a die knife fixing block 2-5 and an air pipe joint 2-6.

[0054] The lower knife seat plate 2-1 is horizontally fixedly arranged on the front part of the lower part of the machine head 10-1 along the left-right direction, located on the lower side of the sewing table 10-12 of the machine head 10-1, and arranged parallel to the sewing table 10-12. A mold knife seat hole running through the upper and lower parts of the sewing table 10-12 is provided on the front middle part of the sewing table 10-12, and the mold knife seat hole is located in front of the needle seat 10-11. The lower knife seat plate 2-1 is provided with an air pipe interface running through the upper and lower parts, and the air pipe connector 2-6 is screwed and fixed on the air pipe interface from bottom to top, and is sealed and connected with the air pipe interface. When in use, the air pipe connector 2-6 is connected to the dust suction device through the corresponding air pipe. The knife seat cushion block 2-4 is provided with a first through hole 2-41 running through the upper and lower parts. The knife seat cushion block 2-4 is fixedly arranged on the lower knife seat plate 2-1, and the first through hole 2-41 is sealed and connected with the air pipe interface of the lower knife seat plate 2-1. A rectangular mounting hole with an opening facing upward is provided in the middle of the mold cutter seat 2-3, and a second through hole 2-31 that runs through the mold cutter seat 2-3 and communicates with the mounting hole is provided in the middle of the mold cutter seat 2-3. The mold cutter seat 2-3 is fixedly arranged on the cutter seat cushion block 2-4, and its second through hole 2-31 is sealed and communicated with the first through hole 2-41 of the cutter seat cushion block 2-4. The mold cutter seat 2-3 is located in the mold cutter seat hole of the sewing table 10-12, and its upper surface is flush with the upper surface of the sewing table 10-12.

[0055] The middle part of the lower die knife 2-2 is provided with a punching needle hole 2-21 which runs through the upper and lower parts thereof. The punching needle hole 2-21 includes a cylindrical section located at the upper part and a truncated cone section located at the lower part. The punching needle 1-5 is clearance-matched with the cylindrical section of the punching needle hole 2-21, and the diameter of the cylindrical section of the punching needle hole 2-21 is larger than the diameter of the punching needle 1-5 by 0 to 0.6 mm (0.2 mm in this embodiment). The diameter of the upper bottom of the truncated cone section is the same as the diameter of the cylindrical section. The middle part of the lower die knife 2-2 is symmetrically provided with an arched air suction groove 2-22 which runs through the upper and lower parts thereof on both sides of the front and rear. The middle part of the lower die knife 2-2 is provided with an air flow channel 2-24 which opens downward and runs through the front and rear parts thereof, and the punching needle hole 2-21 and the air suction groove 2-22 are both connected to the air flow channel 2-24.

[0056] The left and right sides of the lower part of the lower die cutter 2-2 are provided with outwardly protruding clamping bosses 2-23. There are two die cutter fixing blocks 2-5, which are respectively fixed on the left and right parts of the mounting hole of the die cutter seat 2-3, and the two clamping bosses 2-23 of the lower die cutter 2-2 are respectively limited and fixed from the top, so that the lower die cutter 2-2 is fixed on the middle part of the mounting hole of the die cutter seat 2-3, and the upper surface of the lower die cutter 2-2 is flush with the upper surface of the die cutter seat 2-3. The airflow channel 2-24 of the lower die cutter 2-2 is connected to the second through hole 2-31 of the die cutter seat 2-3. The punching pin hole 2-21 of the lower die cutter 2-2 is coaxial with the punching pin 1-5.

[0057] When the punching device of the pattern machine of the present invention is used: the pattern machine first performs lock-stitching around the place to be punched, and then sews the corresponding flower shape after lock-stitching. After sewing, the place to be punched is sent to the top of the punching needle hole 2-21 of the lower die knife 2-2 of the lower punch assembly 2. At this time, the dust suction device connected to the air pipe joint 2-6 is used to suck air, so that the corresponding suction force is generated at the punching needle hole 2-21 and the suction groove 2-22 of the lower die knife 2-2, which can make the cloth better adsorbed and fixed on the upper surface of the lower die knife 2-2 and keep it flat. Then the driving device 1-2 drives the punching needle 1-5 to extend from top to bottom into the punching needle hole 2-21, and forms a shearing structure with the hole wall of the punching needle hole 2-21 to punch out the corresponding cloth, completing the punching, and at the same time, the punched cloth is sucked in and collected by the dust suction device.

[0058] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A punching device for a pattern machine, characterized in that: The upper punch assembly includes an upper punch assembly and a lower punch assembly; the upper punch assembly includes a machine head seat, a driving device, a guide device, a punch seat and a punch needle; the driving device is arranged on the machine head seat, and the driving device drives the punch seat to move up and down along a straight line through the guide device, and the punch needle is detachably fixedly connected to the punch seat and extends downward; the lower punch assembly includes a lower die knife; the lower die knife is arranged in the sewing table of the machine head of the pattern machine, and its upper surface is flush with the upper surface of the sewing table; the punch needle hole is provided with a cylindrical section, and the punch needle extends into the punch needle hole The lower die cutter of the lower punch assembly is symmetrically provided with arched air suction grooves running through the upper and lower parts thereof on both sides of the front and rear sides of the middle part; the lower die cutter is provided with an air flow channel running through the front and rear parts thereof and opening downward, and the punching needle hole and the air suction grooves are both connected with the air flow channel; the punching needle hole of the lower die cutter of the lower punch assembly is also provided with a truncated cone section, which is located below the cylindrical section and is connected with the cylindrical section; the lower punch assembly also includes a lower knife seat plate, a die knife seat, a knife seat cushion block and an air pipe joint; the lower knife seat plate is provided with a water-cooled air channel extending from left to right A flat fixed arrangement is arranged on the front lower part of the machine head, and is located on the lower side of the sewing table of the machine head; a die cutter seat hole is arranged on the front middle part of the sewing table, which runs through the upper and lower parts thereof; an air pipe interface is arranged on the lower knife seat plate, and an air pipe joint is screwed and fixed on the air pipe interface from bottom to top, and is sealed and connected with the air pipe interface; a knife seat cushion block is provided with a first through hole running through the upper and lower parts thereof; the knife seat cushion block is fixedly arranged on the lower knife seat plate, and the first through hole is sealed and connected with the air pipe interface of the lower knife seat plate; an opening is arranged in the middle of the die cutter seat An upward rectangular mounting hole, a second through hole penetrating the upper and lower parts of the mold knife seat and connected to the mounting hole is provided in the middle of the mold knife seat; the mold knife seat is fixedly arranged on the knife seat cushion block, and its second through hole is sealed and connected to the first through hole of the knife seat cushion block; the mold knife seat is located in the mold knife seat hole of the sewing table, and its upper surface is flush with the upper surface of the sewing table; the lower mold knife is fixed in the middle of the mounting hole of the mold knife seat, the upper surface of the lower mold knife is flush with the upper surface of the mold knife seat, and the air flow channel of the lower mold knife is connected to the second through hole of the mold knife seat.

2. The punching device for a pattern machine according to claim 1, characterized in that: The driving device is a cylinder, a piston rod of which extends downward, and a Y-shaped cylinder joint is fixed on the lower end of the piston rod.

3. The punching device for a pattern machine according to claim 2, characterized in that: The guiding device comprises a flange seat, a flange linear bearing and an optical axis guide rail; the flange seat is fixedly arranged in the machine head seat; the flange linear bearing is fixedly arranged on the flange seat, and its axis is vertically arranged in the up-down direction; the optical axis guide rail is slidably arranged in the flange linear bearing in the up-down direction; the upper end of the optical axis guide rail is hingedly connected to the Y-type cylinder joint, and the lower end extends out of the machine head seat; the punch seat is fixedly arranged on the lower end of the optical axis guide rail.

4. The punching device for a pattern machine according to any one of claims 1 to 3, characterized in that: The lower punch die assembly also includes a die cutter fixing block; the left and right sides of the lower part of the lower die cutter are provided with outwardly protruding clamping bosses; there are two die cutter fixing blocks, which are respectively fixed on the left and right parts of the mounting hole of the die cutter seat, and the two clamping bosses of the lower die cutter are limited and fixed from the top, so that the lower die cutter is fixed on the middle part of the mounting hole of the die cutter seat.

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