Five-guide-column servo punching machine

Abstract

The utility model relates to the technical field of punching machines, and discloses a five-guide-pillar servo punching machine which comprises a machine frame, a lower working table plate fixed on the machine frame and an upper working table plate arranged over the lower working table plate, and four guide pillar assemblies and a push-pull guide pillar assembly are arranged on the upper working table plate. The push-and-pull guide column assembly is arranged in the middle of the upper workbench plate and connected with a servo motor, and the servo motor is fixed to the rack; the four guiding column assemblies are arranged at the four corners of the upper workbench plate respectively. The upper workbench plate is guided through the four guide pillar assemblies and the push-pull guide pillar assembly, the guide precision can be effectively improved, and the problems that an existing limiting plate is large in guide pressure, prone to abrasion and unstable in guide are solved; and the lifting of the upper working table plate is controlled through the servo motor, so that the moving amplitude of the upper working table plate can be accurately controlled, and the problem of excessive punching or not-in-place punching in precise punching is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of punching machines, in particular to a five-guide column servo punching machine. Background Art

[0002] Existing punching machine as the instructions attached Figure 8-9 As shown, it includes a frame, on which a motor 90 is fixed. The motor drives a small pulley 91 to rotate, and the small pulley drives a flywheel 93 to rotate through a belt 92. A clutch 94 is provided on one side of the flywheel, and the output end of the clutch is connected to the crankshaft. The crankshaft drives a stamping table 96 to move up or down through a connecting rod mechanism, and the upper mold is fixed on the stamping table; a rectangular protrusion 95 is formed on the left and right ends of the stamping table, and the front side wall, rear side wall and outer side wall of each rectangular protrusion are clamped between three limit plates 97. When it is necessary to stamp a workpiece with higher precision or higher size requirements, such as a mobile phone film (the existing mobile phone film is divided into three layers: upper, middle and lower. The upper and lower layers cannot affect the middle layer when stamping, but the stamping size requirements are higher), the existing stamping machine cannot meet the requirements and is prone to over-stamping or under-stamping. The specific reasons are: the stamping table is driven by a crankshaft and a connecting rod mechanism, and the bottom dead point of the stamping table is the bottom dead point of the connecting rod journal of the crankshaft. The position of the bottom dead point is difficult to confirm, and the mold adjustment work is more troublesome; second, the rectangular protrusion of the stamping table and the limit plate are repeatedly rubbed, and the limit plate and the rectangular protrusion will wear, thereby causing a gap between the limit plate and the rectangular protrusion. The position of the stamping table is easy to shake and unstable during stamping, thereby affecting the stamping quality. Utility Model Content

[0003] The purpose of the utility model is to provide a five-guide column servo punch press, which guides the upper worktable through four guide column assemblies and one push-pull guide column assembly, which can effectively improve the guiding accuracy and solve the existing problems of large guiding pressure, easy wear and unstable guiding of the limit plate;

[0004] By controlling the lifting and lowering of the upper worktable platen through the servo motor, the movement range of the upper worktable platen can be accurately controlled, solving the problem of over-stamping or under-stamping in precision stamping.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A five-guide post servo punch press comprises a frame, a lower worktable fixed on the frame, and an upper worktable arranged just above the lower worktable, the upper worktable is provided with four guide post assemblies and a push-pull guide post assembly, the push-pull guide post assembly is arranged in the middle of the upper worktable and connected to a servo motor, the servo motor is fixed on the frame; the four guide post assemblies are respectively arranged at the four corners of the upper worktable, and the servo motor is electrically connected to a PLC controller.

[0007] Through the above technical solution, the lower mold is fixed on the lower working table, the upper mold is fixed on the lower bottom surface of the upper working table, and the workpiece to be stamped is placed on the lower mold;

[0008] The moving direction of the upper worktable can be accurately controlled by four guide pillar assemblies and one push-pull guide pillar assembly, which can effectively avoid the problem of the upper worktable tilting causing the mold to tilt;

[0009] At the same time, the upper worktable is driven by a servo motor to move, and the moving distance of the upper worktable can be accurately controlled to complete the stamping work of precision workpieces.

[0010] The utility model is further configured as follows: the guide column assembly includes a vertically arranged guide column, the lower end of the guide column is inserted into and fixed on the column connecting seat, and the column connecting seat is fixedly connected to the upper workbench; the middle part of the guide column is inserted into the guide sleeve, the guide sleeve is inserted into and fixed in the guide sleeve seat, and the guide sleeve seat is fixed on the frame;

[0011] The upper ends of the two guide columns on the left and the upper ends of the two guide columns on the right are respectively fixed on a corresponding balancing block, the balancing block is connected to the piston rod of the balancing cylinder, and the balancing cylinder is fixed on the frame.

[0012] Through the above technical solution, the balancing cylinder can balance the weight of the upper worktable and other components such as the upper mold on the upper worktable.

[0013] The utility model is further configured as follows: a first spiral groove and an annular groove are formed on the inner wall of the guide sleeve, the lower end of the first spiral groove is communicated with the annular groove, and the upper end of the first spiral groove extends to the upper end surface of the guide sleeve.

[0014] Through the above technical solution, the friction resistance between the guide sleeve and the guide column can be reduced by adding grease into the first spiral groove; and the subsequent grease can be added from the junction of the upper end of the first spiral groove and the upper end surface of the guide sleeve.

[0015] The utility model is further configured as follows: the push-pull guide column assembly includes a crankshaft rotatably connected to the upper end of the frame, and the rear end spindle of the crankshaft is connected to the servo motor through a planetary reducer; a crank connecting rod is rotatably connected to the crankshaft neck of the crankshaft, and a connecting rod pin is rotatably connected to the lower end of the crank connecting rod, the connecting rod pin is inserted and fixed to the upper end of the push-pull shaft, the push-pull shaft is inserted in the shaft sleeve, the shaft sleeve is inserted and fixed in the shaft sleeve seat, and the shaft sleeve seat is fixed to the frame;

[0016] The lower end of the push-pull shaft is connected to a ball head rod, the ball head of the ball head rod is clamped between the ball socket seat and the ball head pressing sleeve, the ball socket seat is inserted into the cylinder sleeve, and the cavity surrounded by the ball socket seat and the cylinder sleeve is filled with hydraulic oil. The cylinder sleeve is pressed against the upper work table; the cylinder sleeve is placed in the base, the base is fixedly connected to the upper work table, the upper end of the ball head pressing sleeve is against the pressing ring, and the pressing ring is fixedly connected to the base.

[0017] Through the above technical solution, the servo motor drives the crankshaft to rotate through the planetary reducer, the crankshaft connecting rod journal drives the push-pull shaft to move up and down in the shaft sleeve through the crank connecting rod and the connecting pin, the push-pull shaft drives the ball head rod to move up and down, the ball head rod drives the cylinder sleeve to move down through the ball socket seat and hydraulic oil, and the cylinder sleeve drives the upper worktable to move down; when the ball head rod moves up, the ball head rod drives the ball head pressing sleeve to move up, and the ball head pressing sleeve drives the upper worktable to move up through the base;

[0018] The crankshaft is driven to rotate by a servo motor, and the upper worktable can be moved up without the crankshaft connecting rod journal having to move to the bottom dead center. The servo motor can stop at any position and can also be reversed and moved up from any position.

[0019] The utility model is further configured as follows: a second spiral groove is formed on the inner wall of the sleeve, and both ends of the second spiral groove extend to the upper and lower end surfaces of the sleeve respectively;

[0020] A grease filling cap is fixed at the lower end of the shaft sleeve, and the grease filling cap is formed with a stepped hole that is larger at the top and smaller at the bottom. A filling hole is formed on the outer wall of the large hole at the upper end of the stepped hole, and a sealing ring is provided between the small hole at the lower end of the stepped hole and the push-pull shaft.

[0021] Through the above technical solution, external grease is added into the large hole at the upper end of the step hole through the filling hole, and then as the grease in the step hole increases, the grease will automatically enter the second spiral groove. Filling the second spiral groove with grease can reduce the sliding resistance between the sleeve and the push-pull shaft and reduce wear.

[0022] The outstanding effects of the utility model are:

[0023] Compared with the prior art, the upper worktable is guided by four guide post assemblies and one push-pull guide post assembly, which can effectively improve the guiding accuracy and solve the existing problems of high guiding pressure, easy wear and unstable guiding caused by the limit plate.

[0024] By controlling the lifting and lowering of the upper worktable platen through the servo motor, the movement range of the upper worktable platen can be accurately controlled, solving the problem of over-stamping or under-stamping in precision stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is the first cross-sectional view of the utility model;

[0027] Figure 3 It is a second cross-sectional view of the utility model;

[0028] Figure 4 for Figure 3 About the cross-sectional view of BB;

[0029] Figure 5 for Figure 2 A partial enlarged view of A;

[0030] Figure 6 It is a structural schematic diagram of the guide sleeve of the utility model;

[0031] Figure 7 for Figure 3 A partial enlarged view of C;

[0032] Figure 8 The punching machine structure of the prior art;

[0033] Fig. 9 It is a cross-sectional view of a punching machine in the prior art when viewed from above.

[0034] Reference numerals: 10, frame; 11, lower work table; 12, upper work table;

[0035] 20. Guide column assembly; 201. Guide column; 202. Column connecting seat; 203. Guide sleeve; 204. Guide sleeve seat; 205. Balance block; 206. Balance cylinder;

[0036] 2031, first spiral groove; 2032, annular groove;

[0037] 30. Push-pull guide column assembly; 301. Push-pull guide column assembly; 302. Planetary reducer; 303. Crank connecting rod; 304. Connecting rod; 305. Push-pull shaft; 306. Bushing; 307. Bushing seat; 308. Ball head rod; 309. Ball socket seat; 310. Ball head pressing sleeve; 311. Hydraulic oil; 312. Pressing ring; 313. Grease filling cap; 314. Sealing ring; 315. Base; 316. Cylinder liner;

[0038] 3061, second spiral groove;

[0039] 3131, step hole; 3132, filling hole;

[0040] 40. Servo motor;

[0041] 90. Motor; 91. Small pulley; 92. Belt; 93. Flywheel; 94. Clutch; 95. Rectangular protrusion; 96. Stamping table; 97. Limiting plate. DETAILED DESCRIPTION

[0042] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0043] The following references Figures 1 to 7 The utility model is described as follows:

[0044] A five-guide post servo punch press comprises a frame 10, a lower worktable 11 fixed on the frame 10, and an upper worktable 12 arranged just above the lower worktable 11, the upper worktable 12 is provided with four guide post assemblies 20 and a push-pull guide post assembly 30, the push-pull guide post assembly 30 is arranged in the middle of the upper worktable 12 and connected to a servo motor 40, the servo motor 40 is fixed on the frame 10; the four guide post assemblies 20 are respectively arranged at the four corners of the upper worktable 12. The servo motor is electrically connected to a PLC controller.

[0045] The lower die is fixed on the lower worktable, the upper die is fixed on the lower bottom surface of the upper worktable, and the workpiece to be stamped is placed on the lower die;

[0046] The moving direction of the upper worktable can be accurately controlled by four guide pillar assemblies and one push-pull guide pillar assembly, which can effectively avoid the problem of the upper worktable tilting causing the mold to tilt;

[0047] At the same time, the upper worktable is driven by a servo motor to move, and the moving distance of the upper worktable can be accurately controlled to complete the stamping work of precision workpieces.

[0048] The guide column assembly 20 includes a vertically arranged guide column 201, the lower end of the guide column 201 is inserted into and fixed on the column connecting seat 202, and the column connecting seat 202 is fixedly connected to the upper workbench 12; the middle part of the guide column 201 is inserted into the guide sleeve 203, and the guide sleeve 203 is inserted into and fixed in the guide sleeve seat 204, and the guide sleeve seat 204 is fixed on the frame 10;

[0049] The upper ends of the two guide columns 201 on the left and the upper ends of the two guide columns 201 on the right are respectively fixed to a corresponding balancing block 205 , and the balancing block 205 is connected to the piston rod of the balancing cylinder 206 , and the balancing cylinder 206 is fixed to the frame 10 .

[0050] The balancing cylinder can balance the weight of the upper worktable and the upper mold and other components on the upper worktable.

[0051] A first spiral groove 2031 and an annular groove 2032 are formed on the inner wall of the guide sleeve 203 . The lower end of the first spiral groove 2031 communicates with the annular groove 2032 , and the upper end of the first spiral groove 2031 extends to the upper end surface of the guide sleeve 203 .

[0052] Grease is added into the first spiral groove to reduce the friction resistance between the guide sleeve and the guide column; and the grease can be added later from the junction of the upper end of the first spiral groove and the upper end surface of the guide sleeve.

[0053] The push-pull guide column assembly 30 includes a crankshaft 301 rotatably connected to the upper end of the frame 10, and the rear end main shaft of the crankshaft 301 is connected to the servo motor 40 through a planetary reducer 302; a crank connecting rod 303 is rotatably connected to the crankshaft neck of the crankshaft 301, and a connecting rod pin 304 is rotatably connected to the lower end of the crank connecting rod 303, and the connecting rod pin 304 is inserted and fixed to the upper end of the push-pull shaft 305, and the push-pull shaft 305 is inserted and inserted in the shaft sleeve 306, and the shaft sleeve 306 is inserted and fixed in the shaft sleeve seat 307, and the shaft sleeve seat 307 is fixed on the frame 10;

[0054] The lower end of the push-pull shaft 305 is connected to a ball head rod 308, the ball head of the ball head rod 308 is clamped between the ball socket seat 309 and the ball head pressing sleeve 310, the ball socket seat 309 is inserted into the cylinder sleeve 316, and the cavity enclosed by the ball socket seat 309 and the cylinder sleeve 316 is filled with hydraulic oil 311, and the cylinder sleeve 316 is pressed against the upper workbench 12; the cylinder sleeve 316 is placed in the base 315, and the base 315 is fixedly connected to the upper workbench 12, and the upper end of the ball head pressing sleeve 310 is against the pressing ring 312, and the pressing ring 312 is fixedly connected to the base 315.

[0055] The servo motor drives the crankshaft to rotate through the planetary reducer, and the crankshaft connecting rod journal drives the push-pull shaft to move up and down in the shaft sleeve through the crank connecting rod and the connecting pin, and the push-pull shaft drives the ball head rod to move up and down, and the ball head rod drives the cylinder sleeve to move down through the ball socket seat and hydraulic oil, and the cylinder sleeve drives the upper worktable to move down; when the ball head rod moves up, the ball head rod drives the ball head pressing sleeve to move up, and the ball head pressing sleeve drives the upper worktable to move up through the base;

[0056] The crankshaft is driven to rotate by a servo motor, and the upper worktable can be moved up without the crankshaft connecting rod journal having to move to the bottom dead center. The servo motor can stop at any position and can also be reversed and moved up from any position.

[0057] A second spiral groove 3061 is formed on the inner wall of the shaft sleeve 306, and both ends of the second spiral groove 3061 extend to the upper and lower end surfaces of the shaft sleeve 306 respectively;

[0058] A grease filling cap 313 is fixed to the lower end of the shaft sleeve 306 , and the grease filling cap 313 is formed with a stepped hole 3131 which is larger at the top and smaller at the bottom. A filling hole 3132 is formed on the outer wall of the large hole at the upper end of the stepped hole 3131 , and a sealing ring 314 is provided between the small hole at the lower end of the stepped hole 3131 and the push-pull shaft 305 .

[0059] Grease from the outside is added to the large hole at the upper end of the step hole through the filling hole, and then as the grease in the step hole increases, the grease will automatically enter the second spiral groove. Filling the second spiral groove with grease can reduce the sliding resistance between the sleeve and the push-pull shaft and reduce wear.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A five-guide column servo punch press, comprising a frame (10), a lower work table (11) fixed to the frame (10), and an upper work table (12) arranged directly above the lower work table (11), characterized in that: The upper work table (12) is provided with four guide post assemblies (20) and a push-pull guide post assembly (30); the push-pull guide post assembly (30) is arranged in the middle of the upper work table (12) and is connected to a servo motor (40); the servo motor (40) is fixed on the frame (10); the four guide post assemblies (20) are respectively arranged at the four corners of the upper work table (12).

2. A five-guide column servo punch press according to claim 1, characterized in that: The guide column assembly (20) comprises a vertically arranged guide column (201), the lower end of the guide column (201) is inserted into and fixed on a column connecting seat (202), and the column connecting seat (202) is fixedly connected to the upper workbench (12); the middle part of the guide column (201) is inserted into a guide sleeve (203), the guide sleeve (203) is inserted into and fixed in a guide sleeve seat (204), and the guide sleeve seat (204) is fixed on the frame (10); The upper ends of the two guide columns (201) on the left and the upper ends of the two guide columns (201) on the right are respectively fixed to a corresponding balancing block (205), the balancing block (205) is connected to the piston rod of the balancing cylinder (206), and the balancing cylinder (206) is fixed to the frame (10).

3. A five-guide column servo punch press according to claim 2, characterized in that: A first spiral groove (2031) and an annular groove (2032) are formed on the inner wall of the guide sleeve (203); the lower end of the first spiral groove (2031) is in communication with the annular groove (2032); and the upper end of the first spiral groove (2031) extends to the upper end surface of the guide sleeve (203).

4. The five-guide column servo punch press according to claim 1, characterized in that: The push-pull guide column assembly (30) comprises a crankshaft (301) rotatably connected to the upper end of the frame (10); the rear end main shaft of the crankshaft (301) is connected to the servo motor (40) via a planetary reducer (302); a crank connecting rod (303) is rotatably connected to the crankshaft neck of the crankshaft (301); a connecting rod pin (304) is rotatably connected to the lower end of the crank connecting rod (303); the connecting rod pin (304) is inserted into and fixed to the upper end of the push-pull shaft (305); the push-pull shaft (305) is inserted into and fixed to the shaft sleeve (306); the shaft sleeve (306) is inserted into and fixed to the shaft sleeve seat (307); the shaft sleeve seat (307) is fixed to the frame (10); The lower end of the push-pull shaft (305) is connected to a ball head rod (308), the ball head of the ball head rod (308) is clamped between a ball socket seat (309) and a ball head pressing sleeve (310), the ball socket seat (309) is inserted into a cylinder sleeve (316), and a cavity enclosed by the ball socket seat (309) and the cylinder sleeve (316) is filled with hydraulic oil (311), and the cylinder sleeve (316) is pressed against the upper workbench (12); the cylinder sleeve (316) is placed in a base (315), the base (315) is fixedly connected to the upper workbench (12), and the upper end of the ball head pressing sleeve (310) is pressed against a pressing ring (312), and the pressing ring (312) is fixedly connected to the base (315).

5. A five-guide column servo punch press according to claim 4, characterized in that: A second spiral groove (3061) is formed on the inner wall of the shaft sleeve (306), and two ends of the second spiral groove (3061) extend to the upper and lower end surfaces of the shaft sleeve (306) respectively; A grease filling cap (313) is fixed to the lower end of the shaft sleeve (306), and the grease filling cap (313) is formed with a stepped hole (3131) that is larger at the top and smaller at the bottom. A filling hole (3132) is formed on the outer wall of the large hole at the upper end of the stepped hole (3131), and a sealing ring (314) is provided between the small hole at the lower end of the stepped hole (3131) and the push-pull shaft (305).

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