CN110884184A

CN110884184A - Crank press

Info

Publication number: CN110884184A
Application number: CN201911332991.2A
Authority: CN
Inventors: 朱建随; 卢冉峰
Original assignee: Hubei Tengwei Electronic Technology Co Ltd
Current assignee: Hubei Tengwei Electronic Technology Co Ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-03-17

Abstract

The invention relates to the technical field of automobile part processing, and discloses a crank press which comprises a bed body, a crankshaft rotationally connected to the bed body, a power mechanism used for driving the crankshaft to rotate, a sliding block arranged on the bed body in a sliding mode, and a connecting rod, wherein one end of the connecting rod is hinged with the crankshaft, and the other end of the connecting rod is hinged with the sliding block. The invention has the following advantages and effects: when workpieces such as automobile parts are machined, the power mechanism drives the crankshaft to rotate, and the crankshaft drives the sliding block to reciprocate through the connecting rod, so that the workpieces are punched. Set up the location bracket in the slider below, reciprocal linear motion is also done to the location bracket, avoids the slider actual motion stroke to be greater than and sets for the stroke, makes the slider motion steady, and the punching press adds the precision height in man-hour, and the workman can observe guide pillar and location bracket visually simultaneously, judges whether deviation appears in slider stroke and motion state, can effectively improve the punching press and add the yields in man-hour.

Description

Crank press

Technical Field

The invention relates to the technical field of automobile part processing, in particular to a crank press.

Background

Automobile parts, as the basis of the automotive industry, are essential factors supporting the continued healthy development of the automotive industry. Stamping is one of the common processes in the processing of automobile parts, and applies external force to materials by a press and a die to cause the materials to generate plastic deformation or separation, thereby obtaining workpieces with required shapes and sizes. The crank press is cold stamping equipment, and a crank connecting rod is used as a working mechanism. In the process of processing automobile parts, equipment is easy to age after long-term use of a crank press, and particularly after a sliding block and a bed body are abraded and a crankshaft and a connecting rod are abraded, the sliding block stamping stroke is not accurate, and the problem of poor quality of the automobile parts after stamping is easily caused.

Disclosure of Invention

The invention aims to provide a crank press which has the effect of improving the stamping stroke precision.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a crank press, includes the bed body, rotate the bent axle of connecting in the bed body, be used for the drive bent axle pivoted power unit, slide set up in the slider of the bed body, one end with the bent axle is articulated mutually and the other end with slider articulated connecting rod mutually, the bed body be equipped with rotate be provided with the lead screw, install in the bed body is used for the drive lead screw pivoted servo motor and speed reducer, the lead screw cover is equipped with nut assembly, the guide hole has been seted up to the slider, nut assembly is provided with the guide pillar that passes the guide hole, the guide pillar is fixed with and is located the location bracket of slider below.

Through adopting above-mentioned technical scheme, crank press during operation, power unit drive bent axle rotates, the bent axle passes through the connecting rod and drives the slider and be reciprocating motion, servo motor's output shaft links to each other with the input shaft of speed reducer, the output shaft of speed reducer links to each other with the lead screw, servo motor and speed reducer drive lead screw rotate, the lead screw drives the nut subassembly motion, and then drive the guide pillar, the motion of location bracket, the reciprocating motion is done along with the slider to the location bracket, when slider downstream breaks through and sets for the stroke, the location bracket contacts and holds the slider, avoid the slider to continue to slide downwards, in order to improve the punching stroke accuracy, the slider motion is steady when adding man-hour to automobile parts, the.

The invention is further provided with: the bed body is fixed with the guide rail, nut component lateral wall sliding connection in the guide rail.

The invention is further provided with: the guide pillar lateral wall has seted up the holding tank, the holding tank supplies the guide rail is placed.

The invention is further provided with: and a positioning ring is fixed on the inner wall of the guide hole, and a first coating is arranged on the outer wall of the guide pillar.

By adopting the technical scheme, after the side wall of the sliding block is abraded with the bed body, the sliding block deflects along the horizontal direction, the positioning ring at the guide hole is contacted with the outer wall of the guide pillar in the moving process of the sliding block, the first coating on the outer wall of the guide pillar is scraped, a worker can visually observe that the first coating on the outer wall of the guide pillar is scraped, and the sliding block can be judged to deflect when moving.

The invention is further provided with: the sliding block is fixedly provided with an upper die, the bed body is fixedly provided with a workbench, the workbench is hinged with a die holder, and the die holder is fixedly provided with a lower die.

By adopting the technical scheme, the workpiece to be processed is arranged on the lower die, and the sliding block and the upper die move downwards to process the workpiece.

The invention is further provided with: the die holder is hinged with a first hook portion, an elastic element used for driving the first hook portion to abut against the die holder is arranged on the die holder, a second hook portion is arranged on the guide post, the second hook portion slides over the first hook portion when the guide post moves downwards, and the second hook portion hooks the first hook portion and then drives the die holder to turn over when the guide post moves upwards.

By adopting the technical scheme, when the sliding block and the lower die move downwards, the workpiece is punched, the guide pillar moves downwards, and the hook part II slides over the hook part I. When the sliding block and the upper die move upwards, the second hook part on the guide pillar hooks the first hook part on the die holder to drive the die holder and the lower die to overturn, a workpiece on the lower die is separated from the lower die to finish automatic discharging, manual discharging of workers is avoided, and safety of the crank press during use is improved. And after the second hook part of the guide pillar is separated from the first hook part of the die holder, the die holder is reset under the action of gravity.

The invention is further provided with: the workbench is hinged with a swing arm, one end of the swing arm is fixedly provided with a buffer spring, the workbench is provided with a through hole, and the workbench is provided with a positioning assembly; after the die holder is turned and then contacts with and pushes the swing arm to turn, the buffer spring passes through the through hole and then is positioned below the die holder, and the swing arm is fixed by the positioning assembly.

Through adopting above-mentioned technical scheme, the die holder upset back contact promotes the swing arm upset, and the buffer spring of swing arm passes and lies in the die holder below behind the through-hole, and the die holder contacts with buffer spring when resetting under self gravity, avoids the direct striking of die holder to form the noise of dazzling on the workstation.

The invention is further provided with: the workbench is provided with mounting holes distributed on one side of the swing arm, the positioning assembly comprises a positioning block inserted in the mounting holes, and a positioning spring, one end of the positioning spring is fixed on the inner wall of the mounting hole, the other end of the positioning spring is fixed on the positioning block, the positioning block is provided with a guide surface, and the guide surface drives the positioning block to move towards the inside of the mounting hole after being stressed when the swing arm is turned.

Through adopting above-mentioned technical scheme, overturn after the swing arm receives the thrust of die holder, after the spigot surface on the locating piece contacted with the swing arm, the swing arm was kept away from to the guide locating piece, after the swing arm motion passed through locating piece department, behind the positioning spring drive locating piece motion, the locating piece blockked the swing arm and resets, realized the effect with the swing arm location.

The invention is further provided with: and the upper end surface of the positioning bracket is provided with a second coating.

Through adopting above-mentioned technical scheme, when the actual motion stroke of slider is greater than predetermineeing the stroke, when the slider moved to the bottom, on striking the location bracket, the workman observes the wearing and tearing of coating two visually after, can judge that the actual motion stroke of slider surpasss the settlement stroke.

The invention is further provided with: the power mechanism comprises a motor.

The invention has the beneficial effects that: when workpieces such as automobile parts are machined, the power mechanism drives the crankshaft to rotate, and the crankshaft drives the sliding block to reciprocate through the connecting rod, so that the workpieces are punched. Set up the location bracket in the slider below, reciprocal linear motion is also done to the location bracket, avoids the slider actual motion stroke to be greater than and sets for the stroke, makes the slider motion steady, and the punching press adds the precision height in man-hour, and the workman can observe guide pillar and location bracket visually simultaneously, judges whether deviation appears in slider stroke and motion state, can effectively improve the punching press and add the yields in man-hour.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic view of the connection relationship of the lead screw, nut assembly, guide post and slide block of the present invention.

Fig. 3 is a first schematic view of the state of the swing arm and the die holder of the invention.

FIG. 4 is a second schematic view of the state of the swing arm and the die holder of the present invention.

Fig. 5 is a schematic diagram of the position relationship between the swing arm and the workbench of the present invention.

Fig. 6 is an enlarged view of fig. 5 at a.

Fig. 7 is a schematic structural view of the positioning assembly of the present invention.

In the figure, 1, bed body; 11. a power mechanism; 12. a crankshaft; 13. a connecting rod; 14. a guide rail; 2. a slider; 21. a guide hole; 3. a lead screw; 31. a nut assembly; 32. a guide post; 321. a second hook part; 33. a positioning bracket; 4. a work table; 41. a table body; 42. positioning seats; 421. mounting holes; 43. a through hole; 44. a notch; 5. a servo motor; 51. a speed reducer; 6. a positioning assembly; 61. positioning blocks; 611. a guide surface; 612. a positioning spring; 7. swinging arms; 71. a buffer spring; 8. a die holder; 81. a lower die; 82. a first hook part; 83. an elastic element.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Example (b): a crank press is shown in figure 1 and comprises a bed body 1, a crankshaft 12 rotationally connected to the bed body 1, a power mechanism 11 used for driving the crankshaft 12 to rotate, a sliding block 2 arranged on the bed body 1 in a sliding mode, and a connecting rod 13, wherein one end of the connecting rod is hinged to the crankshaft 12, the other end of the connecting rod is hinged to the sliding block 2, and the power mechanism 11 is an electric motor. An upper die is installed on the sliding block 2, a workbench 4 is fixed on the bed body 1, a die holder 8 is hinged on the workbench 4, and a lower die 81 is installed on the die holder 8. When the crank press works, a workpiece is placed at the lower die 81, the power mechanism 11 drives the crankshaft 12 to rotate, the crankshaft 12 drives the sliding block 2 to reciprocate through the connecting rod 13, and when the sliding block 2 moves downwards, the upper die on the sliding block 2 contacts and presses the workpiece, so that the workpiece is pressed and processed.

As shown in fig. 1 and 2, a screw 3 rotationally connected with the bed body 1, a servo motor 5 and a speed reducer 51 fixedly mounted on the bed body 1 are mounted on the bed body 1, an output shaft of the servo motor 5 is connected with an input shaft of the speed reducer 51, and an output shaft of the speed reducer 51 is connected with the screw 3. The cover is equipped with nut assembly 31 on the lead screw 3, is fixed with the guide rail on the bed body 1, and nut assembly 31 imbeds in the guide rail. The slide block 2 is provided with a guide hole 21, a guide post 32 is fixed on the outer wall of the nut component 31, and the guide post 32 penetrates through the guide hole 21 downwards. The guide post 32 is fixed with a positioning bracket 33, and the positioning bracket 33 is positioned below the sliding block 2. The inner wall of the guide hole 21 is fixed with a positioning ring, the outer wall of the guide post 32 is provided with a first coating, and the upper end surface of the positioning bracket 33 is provided with a second coating.

As shown in fig. 2 and 3, a second hook 321 is fixed on the guide post 32, a first hook 82 is hinged on the die holder 8, an elastic element 83 is further fixed on the die holder 8, the elastic element 83 is a spring, one end of the elastic element 83 is fixed on the die holder 8, and the other end of the elastic element 83 is fixed on the first hook 82, the die holder 8 includes a blocking portion located above the first hook 82, and the elastic element 83 elastically drives the second hook 321 to abut against the blocking portion. When the nut component 31 moves downwards, the guide post 32 is driven to descend, and the second hook portion 321 slides over the first hook portion 82 and is located below the first hook portion 82. When the nut component 31 moves upwards, the guide pillar 32 is driven to ascend, the first hook portion 82 is hooked by the second hook portion 321 in the ascending process, the die holder 8 is driven to overturn, the processed workpiece slides down from the lower die 81, and automatic discharging is achieved. When the second hook 321 is separated from the first hook 82, the die holder 8 moves downward under the action of its own weight to reset.

As shown in fig. 3 and 4, a swing arm 7 is hinged in the workbench 4, and the workbench 4 is provided with a through hole 43 and a notch 44. One end of the swing arm 7 is fixed with a buffer spring 71, and the other end of the swing arm passes through the notch 44 and then is positioned above the workbench 4. As shown in fig. 3 to 7, a positioning assembly 6 is further disposed at the working table 4, the working table 4 includes a table body 41 and two positioning seats 42 fixed on the table body 41, the two positioning seats 42 are distributed at two sides of the swing arm 7, a mounting hole 421 is formed in a side wall of one of the positioning seats 42, the positioning assembly 6 includes a positioning block 61 inserted in the mounting hole 421, a positioning spring 612 having one end fixed to the positioning block 61 and the other end fixed to an inner wall of the mounting hole 421, and the positioning block 61 is provided with a guide surface 611. When the die holder 8 is turned upwards, the die holder 8 contacts and pushes the swing arm 7 to turn, and the swing arm 7 contacts the guide surface 611 of the positioning block 61 and pushes the positioning block 61 to move towards the mounting hole 421. After the swing arm 7 slides over the positioning block 61, the positioning block 61 moves under the elastic force of the positioning spring 612 and then resets, the side wall of one side of the swing arm 7 abuts against the inner wall of the notch 44, the side wall of the other side of the swing arm 7 is blocked by the positioning block 61, the swing arm 7 is fixed at the moment, the buffer spring 71 on the swing arm 7 penetrates through the through hole 43 of the workbench 4 and then is positioned below the die holder 8, and the die holder 8 contacts with the buffer spring 71 in the process of downward movement and resetting under the action of self gravity, so that the generation of large noise caused by direct impact on the workbench 4.

When the crank press works: the power mechanism 11 drives the crankshaft 12 to rotate, the crankshaft 12 drives the sliding block 2 to do reciprocating motion through the connecting rod 13, the output shaft of the servo motor 5 is connected with the input shaft of the speed reducer 51, the output shaft of the speed reducer 51 is connected with the lead screw 3, the servo motor 5 and the speed reducer 51 drive the lead screw 3 to rotate, the lead screw 3 drives the nut assembly 31 to move, further, the guide pillar 32 and the positioning bracket 33 are driven to move, the positioning bracket 33 does reciprocating motion along with the sliding block 2, when the sliding block 2 moves downwards to break through a set stroke, the positioning bracket 33 contacts and supports the sliding block 2, the sliding block 2 is prevented from continuing to slide downwards, the stamping stroke accuracy is improved, the sliding block 2 moves stably when an automobile part is.

Claims

1. The utility model provides a crank press which characterized in that: the automatic lathe comprises a lathe body (1), a crankshaft (12) rotationally connected to the lathe body (1), a power mechanism (11) used for driving the crankshaft (12) to rotate, a sliding block (2) slidably arranged on the lathe body (1), a connecting rod (13) with one end hinged to the crankshaft (12) and the other end hinged to the sliding block (2), wherein a lead screw (3) rotatably arranged on the lathe body (1), a servo motor (5) and a speed reducer (51) mounted on the lathe body (1) and used for driving the lead screw (3) to rotate are arranged, a nut component (31) is sleeved on the lead screw (3), a guide hole (21) is formed in the sliding block (2), a guide pillar (32) penetrating through the guide hole (21) is arranged on the nut component (31), and a positioning bracket (33) located below the sliding block (2) is fixed on the guide pillar (.

2. A crank press according to claim 1, characterized in that: the bed body (1) is fixed with a guide rail, and the side wall of the nut component (31) is connected in the guide rail (14) in a sliding manner.

3. A crank press according to claim 1, characterized in that: a positioning ring is fixed on the inner wall of the guide hole (21), and a first coating is arranged on the outer wall of the guide post (32).

4. A crank press according to claim 1, characterized in that: the utility model discloses a lathe, including bed body (1), slider (2), bed body (1) are fixed with the mould, be fixed with workstation (4) on the slider (2), workstation (4) articulate has die holder (8), be fixed with lower mould (81) on die holder (8).

5. A crank press according to claim 4, characterized in that: the die holder (8) is hinged with a first hook portion (82), an elastic element (83) used for driving the first hook portion (82) to abut against the die holder (8) is arranged on the die holder (8), the guide pillar (32) is provided with a second hook portion (321), the second hook portion (321) slides over the first hook portion (82) when the guide pillar (32) moves downwards, and the second hook portion (321) hooks the first hook portion (82) and then drives the die holder (8) to turn when the guide pillar (32) moves upwards.

6. A crank press according to claim 5, characterized in that: the workbench (4) is hinged with a swing arm (7), one end of the swing arm (7) is fixed with a buffer spring (71), the workbench (4) is provided with a through hole (43), and the workbench (4) is provided with a positioning assembly (6); after the die holder (8) is turned over and then contacts with and pushes the swing arm (7) to turn over, the buffer spring (71) passes through the through hole (43) and then is positioned below the die holder (8), and the swing arm (7) is fixed by the positioning assembly (6).

7. A crank press according to claim 6, characterized in that: the workbench (4) is provided with mounting holes (421) distributed on one side of the swing arm (7), the positioning assembly (6) comprises a positioning block (61) inserted into the mounting hole (421), and a positioning spring (612) with one end fixed on the inner wall of the mounting hole (421) and the other end fixed on the positioning block (61), the positioning block (61) is provided with a guide surface (611), and the guide surface (611) is driven by force to move towards the mounting hole (421) when the swing arm (7) is turned.

8. A crank press according to claim 1, characterized in that: and a second coating is arranged on the upper end surface of the positioning bracket (33).

9. A crank press according to claim 1, characterized in that: the power mechanism (11) comprises a motor.