CN216068821U - Safety stop lever device of press machine - Google Patents

Abstract

The utility model relates to the technical field of safety of stamping equipment, in particular to a safety stop lever device of a press machine. The device is symmetrically arranged on two diagonal upright posts of a die testing press, and when the device is started, the stop lever is placed between the upper surface of the workbench and the lower surface of the slide block to support the upper die slide block to prevent the upper die slide block from falling. The device specifically comprises a supporting seat, a sliding arm, a rotating arm and a stop lever, wherein the sliding arm is horizontally arranged on the supporting seat in a sliding manner, and one end of the rotating arm is hinged with the sliding arm and horizontally rotates around a hinged end; the other end of the rotating arm is movably connected with a blocking rod, and the blocking rod is vertically arranged and used for safe support. The device is suitable for the structural design of manual operation, simple in structure, convenient to operate, capable of adjusting the three degrees of freedom of horizontal sliding, rotation and height adjustment, flexible in adjusting the placement position of the stop lever and suitable for safety protection of presses and dies with different specifications.

Description

Safety stop lever device of press machine

Technical Field

The utility model relates to the technical field of safety of stamping equipment, in particular to a safety stop lever device of a press machine.

Background

The automobile body shell plate belongs to a stamping part and is formed by punching a corresponding die driven by a press machine. The die is divided into an upper die and a lower die, the upper die and the lower die are respectively fixed on a slide block and a workbench of the press machine through clamping mechanisms, the slide block is connected with a transmission mechanism, and the slide block is driven by a motor to reciprocate up and down along a guide rail on the side surface of the upright post, so that the stamping process of the plate is realized. When workers enter the die to operate, the sliding block is strictly prevented from falling to harm the personal safety of the workers. The mould testing press machine generally adopts anti-falling devices which are symmetrically arranged on two diagonal upright posts of the mould testing press machine, when the device is started, a supporting part is placed between the upper surface of a workbench and the lower surface of a sliding block, and the upper mould sliding block is supported to prevent the upper mould sliding block from falling. At present, the position of some safety stop rods cannot be adjusted, and if the size of a mold is too large, the safety stop rods interfere with the mold and cannot play a supporting role.

Chinese patent publication No. CN102092149A discloses a press ram anti-falling device in 2011, 06, 15, wherein an upper hanging plate assembly, an air cylinder assembly and a travel switch are fixedly connected in front of and behind an upper cross beam of a press, and a safety bolt is connected with an air cylinder rod of the air cylinder assembly; the front and the back of the sliding block are fixedly provided with a lower bent plate component; two sets of safety bolt jacks are arranged on the upper hanging plate component, two long grooves are formed in the lower bent plate component, and safety bolts are mounted on the stand columns of the press machine. This scheme relies on the intensity rigidity of safety bolt to come as the support, has certain risk, but also need constantly adjust the cylinder in order to adapt to the installation, and the structure is complicated, and operating efficiency is low moreover.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problems of safety and operability in the prior art, and provides a safety stop lever device of a press machine, which has three degrees of freedom, can flexibly adjust the placement position of the safety stop lever through manual operation, and effectively prevents a die from falling.

In order to solve the technical problems, the utility model adopts the technical scheme that:

a safety stop lever device of a press machine comprises a supporting seat, a sliding arm, a rotating arm and a stop lever, wherein the sliding arm is horizontally arranged on the supporting seat in a sliding mode, one end of the rotating arm is hinged with the sliding arm and horizontally rotates around the hinged end; the other end of the rotating arm is movably connected with a blocking rod, and the blocking rod is vertically arranged and used for safe support.

The stop lever is integrally supported between the upper die and the lower die of the press machine, so that the rigidity of the stop lever is kept enough, and when workers enter the die to operate, the sliding block is effectively prevented from falling to harm the personal safety of the workers. The transverse moving distance of the stop lever in the horizontal direction is adjusted through the sliding arm, and the transverse moving distance of the stop lever is adjusted through the rotating arm on one hand, and on the other hand, the supporting position of the stop lever can be flexibly adjusted to avoid interference. Meanwhile, the stop lever is movably connected with the rotating arm, so that the height adjustment is flexible and convenient.

Preferably, the number of the sliding arms is two or more, and the sliding arms are arranged in the same direction and are respectively hinged with the rotating arms. The horizontal connection strength of the rotating arm and the stop lever can be effectively enhanced by adopting a plurality of groups of sliding arms, and the deformation is reduced. The sliding arms are kept horizontally aligned and move synchronously.

As one of the preferable schemes, the supporting seat is provided with a sliding rail, the sliding rail is arranged corresponding to the sliding arm, and the sliding arm is in sliding fit with the sliding rail. The supporting seat is provided with a sliding rail, and the sliding arm slides back and forth along the sliding rail, preferably a straight sliding rail.

As one preferable scheme, the slide rail is equipped with a plurality of slide blocks, and the slide arm is fixedly connected with the slide blocks and is connected with the slide rail in a sliding manner through the slide blocks. Each slide rail is provided with a plurality of slide blocks, the slide blocks are in sliding fit with the slide rails, and meanwhile, the slide arms are fixedly connected with the slide blocks and driven to slide by the slide blocks. The slider can be usually matched with the slide rail by adopting a linear bearing.

As one of the preferable schemes, the rotating arm comprises a connecting end and a fixed end which are integrally connected, the connecting end is hinged with the sliding arm, and the fixed end is used for connecting the fixed stop lever. The connecting end of the rotating arm is hinged corresponding to the sliding arm, the fixed end of the rotating arm is far away from the hinged position, and the blocking rod is vertically and movably arranged at the fixed end.

As one preferable scheme, the fixing end is of a semi-hollow cylindrical structure on the whole. Adopt half hollow out construction can weight reduction to the stiff end can also be equipped with the handle, and manual pulling stiff end can stimulate the rotor arm whole to rotate and the sliding arm slides.

Preferably, the fixing end is provided with a through hole for assembling a stopper rod, and the stopper rod penetrates through and is clamped in the through hole. The stop lever is sleeved in the through hole at the fixed end of the rotating arm, and the stop lever and the through hole are in clearance fit.

As one preferable scheme, the stop lever is sleeved with a buffer spring, the stop lever is provided with a step, and the buffer spring is clamped between the step and the rotating arm. The buffer spring is mainly used for avoiding direct collision between the stop lever and the rotating arm, and the step is usually arranged on the upper part of the stop lever, so that the smooth clamping spring is ensured not to fall off, and meanwhile, the stop lever is also clamped on the rotating arm.

As one preferable scheme, the stop lever is further connected with an extension lever, and the extension lever is detachably connected with the stop lever. Aiming at the condition of a large-sized press machine or a large supporting distance, when the length of the stop lever is insufficient, the extension lever is adopted to lengthen, so that the supporting height and the supporting strength are ensured.

As one preferable scheme, the extension rod is in threaded connection with the stop rod; the top or the bottom of the stop rod is provided with a threaded hole, and the outer wall of the extension rod is provided with an external thread. The extension rod and the gear rod are both of circular tube structures and are connected and assembled through threads.

Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses a safety stop lever device of a press machine, 1) the safety stop lever device is suitable for the structural design of manual operation, and has simple structure and convenient operation; 2) the three degrees of freedom of horizontal sliding, rotation and height adjustment are provided, the position of the stop lever is flexibly adjusted, and the safety protection device can adapt to the safety protection of presses and dies with different specifications; 3) the whole rod is protected and supported, sufficient strength and rigidity are ensured, safety risks caused when the die and the press slide block are connected abnormally are effectively prevented, and the operation safety of workers in a die area is improved.

Drawings

FIG. 1 is a state diagram of an embodiment of the present invention in use.

Fig. 2 is a schematic view of the overall installation of the embodiment of the present invention.

Fig. 3 is an overall structural view of the embodiment of the present invention.

Fig. 4 is a view showing a structure of a rotating arm according to an embodiment of the present invention.

The device comprises a support base 1, a sliding arm 2, a rotating arm 3, a lever 4, a sliding rail 5, a sliding block 6, a connecting end 31, a fixed end 32, a through hole 7, a buffer spring 8, a step 9 and an extension rod 10.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:

examples

As shown in fig. 1-2, the present embodiment provides a safety stopper device for a press machine, which is symmetrically installed at two diagonal columns of a die press machine, and when the device is activated, a supporting portion is placed between the upper surface of a worktable and the lower surface of a slide 6, and supports an upper die slide 6 to prevent it from falling.

As shown in fig. 3, the device comprises a supporting seat 1, a sliding arm 2, a rotating arm 3 and a blocking rod 4, wherein the sliding arm 2 is horizontally arranged on the supporting seat 1 in a sliding manner, one end of the rotating arm 3 is hinged to the sliding arm 2 and horizontally rotates around a hinged end, meanwhile, the other end of the rotating arm 3 is movably connected with the blocking rod 4, and the blocking rod 4 is vertically arranged and used for safe supporting.

Specifically, a plurality of cushion blocks with threaded holes are welded on the upright post of the press machine, the supporting seat 1 is fixed on each cushion block through bolts, the height and the extensible length of the stop lever 4 are determined by the supporting seat 1, and the installation position of the stop lever needs to be carefully calculated. Usually, a travel switch is installed on the support base 1 to detect whether the slide arm 2 moves forward or backward to a proper position.

In this embodiment, the number of the sliding arms 2 is two, and the sliding arms 2 are arranged in the same direction and aligned with each other and are respectively hinged to the rotating arms 3. The horizontal connection strength of the rotating arm 3 and the stop lever 4 can be effectively enhanced by adopting a plurality of groups of sliding arms 2, and the deformation is reduced. Specifically, the supporting seat 1 is provided with a sliding rail 5, the sliding rail 5 is equipped with two sliding blocks 6, and the sliding arm 2 is fixed on each sliding block 6 through a bolt and is connected with the sliding rail 5 in a sliding manner through the sliding block 6.

In order to reduce the friction force in the sliding process, the sliding blocks 6 adopt linear bearings, and because the bending moment generated on the sliding arms 2 when the stop lever is completely pulled out is large, in order to ensure the structural safety, the double sliding arms 2 and the single sliding arm 2 are adopted to be provided with the two sliding blocks 6. In order to prevent the sliding arm 2 from falling during operation, the sliding rail 5 is provided with a hard forward and backward limiting position, and in order to realize forward and backward in-place detection of the stop lever, the sliding arm 2 is also provided with an auxiliary detection block.

In addition, as shown in fig. 4, the rotating arm 3 includes a connecting end 31 and a fixing end 32 integrally connected, the connecting end 31 is hinged to the sliding arm 2, and the fixing end 32 is used for connecting the fixed stop lever 4. Specifically, the fixing end 32 is a semi-hollow cylindrical structure, the fixing end 32 is provided with a through hole 7 for assembling the blocking rod 4, and the blocking rod 4 penetrates through and is clamped in the through hole 7. The fixed end 32 is pulled manually, so that the rotating arm 3 can be pulled to rotate integrally and the sliding arm 2 can be pulled to slide.

In order to improve the support stability of the gear lever 4, the rotating arm 3 is of a double-arm structure corresponding to the double-sliding arm 2. The longer the swivel arm 3, the more positions the bar 4 can extend into the press. In order to prevent the stop lever 4 from interfering with the press slide 6 after retracting, the total length of the rotating arm 3 and the sliding arm 2 cannot exceed the width of the upright column, and the total length of the rotating arm 3 and the sliding arm 2 needs to be designed after strength and flexibility verification, wherein the length of the rotating arm 3 is 536mm, and the section ruler of the rotating arm 3 is 20 multiplied by 120 mm.

Meanwhile, the hinged part of the rotating arm 3 and the sliding arm 2 is fastened by a bolt, so that the phenomenon that one side of the stop lever 4 is too drooped to incline is prevented. In order to reduce the friction force during manual operation, the hinge joint adopts a double-bearing structure, and the type of the bearing is 51108 in the example.

In addition, the gear lever 4 plays a main integral supporting role, and in order to reduce weight, a circular tube structure is adopted, and Q235 is selected as a material. Generally, the blocking rod 4 selects a small plane of a non-molded surface on a mold as a supporting surface, the longer the blocking rod 4 is, the larger the supporting space is, and meanwhile, the stroke of the slide block 6 and the mold filling height need to be considered, so that the blocking rod 4 is ensured not to be too long to cause interference with an upper mold and a lower mold. The length of the gear lever 4 is 1000 mm. The design of the section size of the stop lever 4 needs to check the support load according to a mechanical model, the outer diameter of the stop lever 4 is 100mm, the inner diameter of the stop lever 4 is 50mm, and the stop lever can support 461.3kN weight under the condition that the safety coefficient takes 3, thereby meeting the support load requirement of field equipment

Meanwhile, the step 9 is arranged at the upper part of the stop lever 4, and the step 9 enables the stop lever 4 to be clamped on the through hole 7 of the fixed end 32 of the rotating arm 3, so that the stop lever does not fall off. Meanwhile, the gear lever 4 is sleeved with a buffer spring 8, the buffer spring 8 is clamped between the step 9 and the rotating arm 3, and the buffer spring 8 is mainly used for avoiding direct collision between the gear lever 4 and the rotating arm 3.

Aiming at the condition of a large-sized press or a large supporting distance, when the length of the stop lever 4 is insufficient, the stop lever 4 is also connected with an extension rod 10, and the extension rod is detachably connected with the stop lever 4. The extension rod and the gear rod 4 are both of circular tube structures and are in threaded connection, specifically, a threaded hole is formed in the bottom of the gear rod 4, and the outer wall of the extension rod is provided with matched external threads.

In practical application, the press machine also adopts a plurality of detection switches to detect the position of the gear lever 4, and a detection signal is added to a press machine control program, so that the safety coefficient is further improved. The staff uses, firstly pulls out the gear lever 4 manually until the in-position detection signal passes, and then puts the gear lever 4 on the supportable plane of the mould through the rotating arm 3.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A safety stop lever device of a press machine is characterized in that: comprises a supporting seat (1), a sliding arm (2), a rotating arm (3) and a stop lever (4), wherein the sliding arm (2) is horizontally arranged on the supporting seat (1) in a sliding manner,

one end of the rotating arm (3) is hinged with the sliding arm (2) and horizontally rotates around the hinged end; the other end of the rotating arm (3) is movably connected with a blocking rod (4), and the blocking rod (4) is vertically arranged and used for safe support.

2. The press safety stop lever device of claim 1, wherein: the number of the sliding arms (2) is two or more, and the sliding arms (2) are arranged in the same direction and are respectively hinged with the rotating arms (3).

3. A press safety stop lever device according to claim 1 or 2, characterized in that: the supporting seat (1) is provided with a sliding rail (5), the sliding rail (5) is arranged corresponding to the sliding arm (2), and the sliding arm (2) is in sliding fit with the sliding rail (5).

4. A safety stop lever device for a press according to claim 3, wherein: the sliding rail (5) is provided with a plurality of sliding blocks (6), and the sliding arm (2) is fixedly connected with the sliding blocks (6) and is in sliding connection with the sliding rail (5) through the sliding blocks (6).

5. A press safety stop lever device according to claim 1 or 2, characterized in that: the rotating arm (3) comprises a connecting end (31) and a fixed end (32) which are connected integrally, the connecting end (31) is hinged to the sliding arm (2), and the fixed end (32) is used for being connected with a fixed stop lever (4).

6. The press safety stop lever device of claim 5, wherein: the whole fixed end (32) is of a semi-hollow cylindrical structure.

7. The press safety stop lever device of claim 6, wherein: the fixed end (32) is provided with a through hole (7) for assembling the blocking rod (4), and the blocking rod (4) penetrates through and is clamped in the through hole (7).

8. The press safety stop lever device of claim 7, wherein: the buffer spring (8) is sleeved on the gear lever (4), the gear lever (4) is provided with a step (9), and the buffer spring (8) is clamped between the step (9) and the rotating arm (3).

9. The press safety stop lever device of claim 1, wherein: the gear lever (4) is further connected with an extension rod (10), and the extension rod is detachably connected with the gear lever (4).

10. The press safety stop lever device of claim 9, wherein: the extension rod is in threaded connection with the stop rod (4); the top or the bottom of the stop rod (4) is provided with a threaded hole, and the outer wall of the extension rod is provided with an external thread.

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