Die height adjusting device for punching machine

Abstract

The utility model relates to a die height adjusting device for a punching machine, and belongs to the technical field of punching equipment. The die height adjusting device comprises a machine tool body, a connecting rod mechanism, a sliding block mechanism and a rotating mechanism, the connecting rod mechanism comprises a first eccentric shaft connected with the rotating mechanism and a crank, one end of the crank is arranged on the first eccentric shaft in a sleeving mode, and the other end of the crank is fixed to the sliding block mechanism. The die height adjusting mechanism is arranged on the sliding block mechanism and comprises a second eccentric shaft, an adjusting assembly and an adjusting driving part, wherein the other end of the crank is arranged on the second eccentric shaft in a sleeved mode, the second eccentric shaft rotates through the adjusting assembly, and the adjusting driving part drives the adjusting assembly to rotate. The die height adjusting device has the effect of adjusting the die height of the punching machine and is compact in structure, stable in transmission and high in adjusting precision.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of stamping equipment, in particular to a die height adjusting device for a punch press. BACKGROUND

[0002] The punch press is a metal processing equipment, which has the characteristics of high rigidity, high precision, reliable operation and automatic production, and is widely used in the fields of electronics, communication and automobile.

[0003] The punch press mainly relies on the rotation of the connecting rod driven by the crankshaft to reciprocate to drive the slider and the upper die set to reciprocate up and down. The patent with the publication number CN220973442U discloses a punch press die height adjusting structure, which comprises a lead screw seat, the inner bottom wall of the lead screw seat is fixedly connected with a shaft sleeve, the inner wall of the shaft sleeve is movably connected with a lead screw shaft, the outer surface of the lead screw shaft is threadedly connected with a moving seat, one side of the moving seat is fixedly connected with a fixed seat, and the inner wall of the lead screw seat is fixedly connected with a sliding rail.

[0004] The above-mentioned patent adopts the lead screw sliding principle to realize the height adjustment of the upper pressing die. In view of the related technology in the above-mentioned patent, the application provides another device capable of realizing die height adjustment. CONTENT OF THE UTILITY MODEL

[0005] In order to realize the die height adjustment of the punch press, the application provides a die height adjusting device for a punch press.

[0006] The application provides a die height adjusting device for a punch press, which adopts the following technical scheme:

[0007] A die height adjusting device for a punch press, comprising a machine tool body, a connecting rod mechanism, a slider mechanism and a rotating mechanism, the connecting rod mechanism comprising a first eccentric shaft connected with the rotating mechanism and a crank, one end of the crank being sleeved on the first eccentric shaft and the other end being fixed with the slider mechanism, further comprising a die height adjusting mechanism arranged on the slider mechanism, the die height adjusting mechanism comprising a second eccentric shaft for sleeving the other end of the crank, an adjusting assembly rotating with the second eccentric shaft and an adjusting driving piece driving the adjusting assembly to rotate.

[0008] By adopting the above technical scheme, the connecting rod mechanism of the punch press is a crank slider structure, the die height adjusting mechanism comprises a second eccentric shaft, an adjusting assembly and an adjusting driving piece, the two ends of the crank are eccentrically sleeved on the slider mechanism and the die height adjusting mechanism respectively, the adjusting driving piece drives the adjusting assembly to rotate, the adjusting assembly drives one end of the crank to rotate on the second eccentric shaft, the other end of the crank also rotates on the second eccentric shaft, the overall height of the crank changes, so that the overall height of the slider mechanism also changes, the height adjustment of the die on the slider mechanism is realized, the structure of the die height adjusting mechanism is simple, the assembly is convenient, and the adjusting precision is high.

[0009] Optionally, the adjusting assembly comprises an adjusting worm rotatably mounted on the slider mechanism, an adjusting worm wheel engaged with the adjusting worm, and a first transmission member connecting the adjusting worm and the adjusting driving member.

[0010] By adopting the above technical scheme, the specific structure of the adjusting assembly is disclosed, the adjusting assembly adopts the worm and gear mode to drive the second eccentric shaft to rotate, and has the advantages of compact structure, stable transmission, and small occupied space.

[0011] Optionally, the first transmission member comprises a first transmission gear provided on an output shaft of the adjusting driving member, a second transmission gear provided on an end of the adjusting worm, and a first transmission chain.

[0012] By adopting the above technical scheme, the gear and chain cooperation mode is adopted, and has the advantages of stable and reliable transmission, high transmission precision, and strong overload capacity, and has the advantages of convenient assembly and adjustment.

[0013] Optionally, an outer diameter of the first transmission gear is smaller than that of the second transmission gear.

[0014] By adopting the above technical scheme, the first transmission gear is driven as a driving wheel, the first transmission gear is smaller than the second transmission gear, so that the second transmission gear is increased in torque, the adjusting precision is improved, and the second transmission gear is decelerated, so that the adjusting precision is improved.

[0015] Optionally, the second eccentric shaft is provided with an eccentric through hole penetrating through two end faces, and the slider mechanism is rotatably mounted with an adjusting fixed shaft fixed with the eccentric through hole.

[0016] By adopting the above technical scheme, the second eccentric shaft is mounted on the slider mechanism through the adjusting fixed shaft, the whole connection of the second eccentric shaft and the slider mechanism is realized, and when the crank changes in height, the adjusting fixed shaft (i.e. the slider mechanism) is driven to adjust.

[0017] Optionally, the slider mechanism is provided with a positioning plate for mounting two ends of the adjusting fixed shaft, and two positioning plates are provided with mounting through holes.

[0018] By adopting the above technical scheme, the adjusting fixed shaft is arranged on the positioning plate, so that the structure of the adjusting assembly is more compact and stable in transmission.

[0019] Optionally, the second eccentric shaft is provided with a mounting portion for mounting the adjusting worm wheel, and the mounting portion is coaxially arranged with the adjusting fixed shaft.

[0020] By adopting the technical scheme, the adjusting worm gear is installed in cooperation with the mounting portion, so that the adjusting worm gear has good rotation stability, and the mounting portion and the adjusting fixed shaft are coaxially arranged, so that the adjusting worm gear can rotate by itself and does not produce eccentric motion.

[0021] Optionally, the height adjusting mechanism further comprises a monitoring assembly for monitoring the adjusting height, the monitoring assembly comprising a rotating seat rotatably arranged on the slider mechanism, a sensor arranged on the rotating seat, and a second transmission member connecting the rotating seat and the adjusting assembly.

[0022] By adopting the technical scheme, the monitoring assembly is arranged, so that the rotation data of the adjusting assembly can be monitored, and the specific adjusting height can be output by the sensor, so that the staff can accurately adjust the height.

[0023] Optionally, the second transmission member comprises a third transmission gear arranged at the other end of the adjusting worm gear, a fourth transmission gear arranged on the rotating seat, and a second transmission chain.

[0024] By adopting the technical scheme, the second transmission member is also a chain wheel transmission mode, which has the effects of compact structure, high transmission precision, and stable transmission performance.

[0025] Optionally, the third transmission gear and the fourth transmission gear have the same outer diameter.

[0026] By adopting the technical scheme, the third transmission gear and the fourth transmission gear have the same outer diameter, so that the third transmission gear and the fourth transmission gear have the same rotation speed, the sensor directly calculates the specific adjusting value through the rotation number of the fourth transmission gear, simplifies the conversion process, and has high accuracy.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The present application adjusts the height of the mold through the height adjusting mechanism, one end of the adjusting assembly drives the crank to rotate, the other end of the crank also rotates on the second eccentric shaft, the overall height of the crank changes, the overall height of the slider mechanism also changes, the height of the mold is adjusted, the structure is compact, and the assembly is convenient;

[0029] 2. The present application drives the second eccentric shaft to rotate in the form of a worm gear, so that the overall transmission is stable and has high transmission precision;

[0030] 3. The present application can monitor the rotation data of the adjusting assembly through the arrangement of the monitoring assembly, so that the staff can accurately adjust the height. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0032] Figure 2 is Figure 1 is a sectional view of A-A in FIG. 1.

[0033] Figure 3 is a structural schematic diagram of a slider mechanism and a die height adjusting mechanism of an embodiment of the present application.

[0034] Figure 4 is a sectional schematic diagram of an adjusting assembly of an embodiment of the present application.

[0035] Figure 5 is a structural schematic diagram of a first transmission member of an embodiment of the present application.

[0036] Figure 6 is a structural schematic diagram of a monitoring assembly of an embodiment of the present application.

[0037] BRIEF DESCRIPTION OF THE DRAWINGS Label 1, machine tool body; 2, connecting rod mechanism; 21, first eccentric shaft; 211, driving part; 212, first eccentric part; 22, crank; 3, slider mechanism; 31, slider seat; 311, mounting chamber; 312, positioning plate; 3121, mounting through hole; 313, adjusting fixed shaft; 314, fixed plate; 32, stamping die; 4, rotating mechanism; 41, rotating driving member; 42, gear transmission group; 5, die height adjusting mechanism; 51, second eccentric shaft; 511, eccentric through hole; 512, mounting part; 513, second eccentric part; 514, adjusting gap; 52, adjusting assembly; 521, adjusting worm; 522, adjusting worm wheel; 523, first transmission member; 5231, first transmission gear; 5232, second transmission gear; 5233, first transmission chain; 53, adjusting driving member; 54, monitoring assembly; 541, rotating seat; 542, sensor; 543, second transmission member; 5431, third transmission gear; 5432, fourth transmission gear; 5433, second transmission chain. DETAILED DESCRIPTION

[0038] The following will be described in detail below with reference to the accompanying Figures 1-6 The present application will be described in further detail.

[0039] The present application discloses a die height adjusting device for a punch press.

[0040] Reference Figure 1 and Figure 2 A die height adjusting device for a punch press, comprising a machine tool body 1, a connecting rod mechanism 2, a slider mechanism 3, a rotating mechanism 4 and a die height adjusting mechanism 5.

[0041] The connecting rod mechanism 2 comprises a first eccentric shaft 21 and a crank 22 fixedly sleeved on the first eccentric shaft 21. The rotating mechanism 4 is a driving source of the first eccentric shaft 21, which comprises a rotating driving member 41 and a gear transmission set 42. The rotating driving member 41 is a rotating motor fixed on the top of the machine tool body 1, and the gear transmission set 42 comprises two driving gears engaged and used for amplifying torque. The first eccentric shaft 21 has a driving part 211 coaxially fixed with the driving gear with a large outer diameter and a first eccentric part 212 for mounting the crank 22.

[0042] The slider mechanism 3 is fixed at the bottom of the crank 22, and the slider mechanism 3 comprises a slider seat 31 mounted on the machine tool body 1 in a lifting manner and a stamping die 32 arranged at the bottom of the slider seat 31. The die height adjusting mechanism 5 is arranged on the slider seat 31 and used for adjusting the height of the crank 22 in an initial state, so as to adjust the height of the stamping die 32.

[0043] Referring to Figure 2 and Figure 3 , the die height adjusting mechanism 5 comprises a second eccentric shaft 51, an adjusting assembly 52, an adjusting driving member 53 and a monitoring assembly 54. The bottom of the crank 22 is fixedly sleeved on the second eccentric shaft 51, the second eccentric shaft 51 is fixed on the adjusting assembly 52, and the rotation of the second eccentric shaft 51 is realized through the adjusting assembly 52.

[0044] Referring to Figure 4 , the top of the slider seat 31 has a mounting cavity 311 for mounting the die height adjusting mechanism 5. Two positioning plates 312 are fixedly mounted in the mounting cavity 311 at intervals, and the adjusting fixed shaft 313 is fixed on the positioning plate 312. The two positioning plates 312 each have a mounting through hole 3121 penetrating through the two side end faces and for inserting the adjusting fixed shaft 313, and the fixed plate 314 is arranged on the opening side of the mounting through hole 3121. The fixed plate 314 and the adjusting fixed shaft 313 are fixed with the positioning plate 312, that is, the adjusting fixed shaft 313 is fixed with the positioning plate 312 through the fixed plate 314.

[0045] The second eccentric shaft 51 has an eccentric through hole 511 rotationally matched with the adjusting fixed shaft 313. The length of the second eccentric shaft 51 is matched with the distance between the two positioning plates 312.

[0046] In combination with Figure 4 and Figure 5 , the adjusting assembly 52 comprises an adjusting worm 521 rotationally mounted on the slider seat 31, an adjusting worm gear 522 matched with the adjusting worm 521 and a first transmission member 523 connecting the adjusting worm 521 and the adjusting driving member 53. The adjusting worm 521 is located below the second eccentric shaft 51 as a whole, and both ends thereof are rotationally mounted on the slider seat 31 through bearings.

[0047] The second eccentric shaft 51 is integrally provided with a mounting portion 512 for mounting the adjusting worm 522. The portion of the second eccentric shaft 51 where the crank 22 is mounted is defined as a second eccentric portion 513, the outer diameter of the mounting portion 512 is greater than that of the second eccentric portion 513, and the mounting portion 512 is coaxially arranged with the adjusting fixed shaft 313. The second eccentric shaft 51 and the adjusting fixed shaft 313 are eccentrically arranged, so that an adjusting gap 514 is formed between the side wall of the mounting portion 512 and the side wall of the second eccentric portion 513.

[0048] The adjusting drive 53 is a rotary motor which is fixed to the side wall of the slide block seat 31 by bolts. The first transmission member 523 includes a first transmission gear 5231 fixed to the output shaft of the adjusting drive 53, a second transmission gear 5232 fixed to the end of the adjusting worm 521, and a first transmission chain 5233 engaging the two transmission gears.

[0049] The first transmission gear 5231 and the second transmission gear 5232 are both located on the outer side wall of the slide block seat 31, and the outer diameter of the first transmission gear 5231 is greater than that of the second transmission gear 5232.

[0050] Referring to Figure 6 The monitoring assembly 54 is used to monitor the number of rotations of the adjusting worm 521 to obtain the adjusting data of the second eccentric shaft 51. The monitoring assembly 54 includes a rotating seat 541 rotatably mounted on the slide block seat 31, a sensor 542 mounted in the rotating seat 541, and a second transmission member 543 connecting the rotating seat 541 and the adjusting worm 521.

[0051] The rotating seat 541 and the adjusting drive 53 are located on opposite side walls of the slide block seat 31, and both are located in the mounting chamber 311. The sensor 542 is an optical sensor of the prior art, which is used to monitor the number of rotations of the rotating seat 541. The sensor 542 transmits signals to the control system of the punch press, and finally outputs specific adjusting values.

[0052] The second transmission member 543 includes a third transmission gear 5431 fixed to the other end of the adjusting worm 521, a fourth transmission gear 5432 fixed to the end of the rotating seat 541, and a second transmission chain 5433 engaging the two gears. In order to simplify the output process, the outer diameters of the third transmission gear 5431 and the fourth transmission gear 5432 are consistent, so that the rotating seat 541 and the adjusting worm 521 are at the same rotational speed.

[0053] The implementation principle of the die height adjusting device for the punch is as follows: when the height of the stamping die 32 needs to be adjusted, the adjusting driving member 53 is started, the adjusting worm wheel 522 is driven to rotate through the first transmission member 523, the second eccentric shaft 51 is driven to rotate by the adjusting worm wheel 522, the crank 22 is eccentrically rotated, the slide block mechanism 3 is driven to rise and fall as a whole, and the height adjustment of the stamping die 32 is realized. The worker adjusts the precision of the stamping die 32 according to the data output by the monitoring assembly 54.

[0054] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A die height adjusting device for a punch press, comprising a machine tool body (1), a connecting rod mechanism (2) and a slider mechanism (3) and a rotating mechanism (4), the connecting rod mechanism (2) comprising a first eccentric shaft (21) connected with the rotating mechanism (4) and a crank (22), one end of the crank (22) being sleeved on the first eccentric shaft (21) and the other end being fixed with the slider mechanism (3), characterized in that, The mold height adjusting mechanism (5) is arranged on the slider mechanism (3), and comprises a second eccentric shaft (51) sleeved with the other end of the crank (22), an adjusting assembly (52) rotating with the second eccentric shaft (51), and an adjusting driving member (53) driving the adjusting assembly (52) to rotate.

2. A die height adjustment device for a punch press as defined in claim 1 wherein, The adjusting assembly (52) comprises an adjusting worm (521) rotatably arranged on the slider mechanism (3), an adjusting worm wheel (522) meshing with the adjusting worm (521), and a first transmission member (523) connecting the adjusting worm (521) and the adjusting driving member (53).

3. A die height adjustment device for a punch press as defined in claim 2 wherein, The first transmission member (523) comprises a first transmission gear (5231) arranged on an output shaft of the adjusting driving member (53), a second transmission gear (5232) arranged on an end of the adjusting worm (521), and a first transmission chain (5233).

4. A die height adjustment device for a punch press as defined in claim 3 wherein, The outer diameter of the first transmission gear (5231) is smaller than that of the second transmission gear (5232).

5. A die height adjustment device for a punch press as defined in claim 2 wherein, The second eccentric shaft (51) is provided with an eccentric through hole (511) penetrating through two end faces, and the slider mechanism (3) is provided with an adjusting fixing shaft (313) matched with the eccentric through hole (511).

6. A die height adjustment device for a punch press as defined in claim 5 wherein, The slider mechanism (3) is provided with a positioning plate (312) for mounting two ends of the adjusting fixing shaft (313), and each of the two positioning plates (312) is provided with a mounting through hole (3121).

7. A die height adjustment device for a punch press as defined in claim 5 wherein, The second eccentric shaft (51) is provided with a mounting portion (512) for mounting the adjusting worm wheel (522), and the mounting portion (512) is coaxially arranged with the adjusting fixing shaft (313).

8. A die height adjustment device for a punch press as defined in claim 2 wherein, The monitoring assembly (54) for monitoring the adjusting height comprises a rotating seat (541) rotatably arranged on the slider mechanism (3), a sensor (542) arranged on the rotating seat (541), and a second transmission member (543) connecting the rotating seat (541) and the adjusting assembly (52).

9. A die height adjustment device for a punch press as defined in claim 8 wherein, The second transmission member (543) comprises a third transmission gear (5431) arranged on the other end of the adjusting worm (521), a fourth transmission gear (5432) arranged on the rotating seat (541), and a second transmission chain (5433).

10. A die height adjustment device for a punch press as defined in claim 9 wherein, The third transmission gear (5431) and the fourth transmission gear (5432) have the same outer diameter.

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