CN218395641U - Punch press fixing tool - Google Patents

Abstract

The utility model relates to the technical field of stamping processing, in particular to a punch fixing tool, which comprises two slide rails, two sliding frames and two limiting devices, wherein the two slide rails are symmetrically arranged, the two sliding frames are all arranged between the two slide rails in a sliding way, and the two limiting devices are respectively arranged on the two sliding frames; stop device includes splint, pinion rack and two locking mechanical system, logical groove has been seted up on the balladeur train, pinion rack part slides and sets up at logical inslot, the one end and the splint fixed connection of pinion rack, the top of pinion rack is provided with forward skewed tooth and reverse skewed tooth side by side, two locking mechanical system sets up respectively at the top of forward skewed tooth and reverse skewed tooth. The utility model discloses a stop device presss from both sides the work piece in real time tightly in stamping process to lift up the back at the cope match-plate pattern, hug closely the work piece, prevent that the work piece from kick-backing.

Description

Punch press fixing tool

Technical Field

The utility model relates to a stamping process technical field, especially a frock is fixed to punch press.

Background

Before the punch presses, a workpiece is generally required to be positioned and clamped to be positioned above the lower die, so that the workpiece is ensured not to be displaced and deflected in the process of pressing the upper die; in actual production, the upper die of most punching machines is retracted after falling to a dead point, the punching machine is subjected to plastic deformation and elastic deformation, a part is subjected to certain springback after a forming load is unloaded, the springback is that the shape of a deformation body is partially recovered after the load is unloaded, the shape and the size of the part are not in accordance with the shape and the size of the working surface of a punching die, so that the size of the part is not in a tolerance range, and the assembly precision of a product is influenced; the fixing tool of the punch press in the prior art can only realize the positioning and clamping of a workpiece before punch forming, and cannot keep the shape of the workpiece after an upper die leaves the workpiece.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a frock is fixed to punch press.

The purpose of the utility model is realized through the following technical scheme: a punch fixing tool comprises two slide rails, two sliding frames and two limiting devices, wherein the two slide rails are symmetrically arranged, the two sliding frames are connected with the two slide rails in a sliding mode, and the two limiting devices are arranged on the two sliding frames respectively;

stop device includes splint, pinion rack and two locking mechanical system, logical groove has been seted up on the balladeur train, pinion rack part slides and sets up at logical inslot, the one end and the splint fixed connection of pinion rack, the top of pinion rack is provided with forward skewed tooth and reverse skewed tooth side by side, two locking mechanical system sets up respectively in the top of forward skewed tooth and reverse skewed tooth. The workpieces with different sizes are fixed by moving the sliding frame; through forward skewed tooth and reverse skewed tooth and locking mechanical system, make the pinion rack can follow the spout and switch between the unidirectional movement between two directions to realize that stamping forming in-process from lasting the fastening to the work piece, prevent that the work piece from kick-backing, and the separation of work piece and frock.

Specifically, locking mechanical system includes slider, inserted block and ejector pin, the balladeur train is in the spout that the intercommunication led to the groove is all seted up to forward skewed tooth with the top of reverse skewed tooth, the slider slides and sets up in the spout, the inserted block sets up the bottom at the slider, the ejector pin sets up the top at the slider, the one end of ejector pin is worn to extend outside the balladeur train. The one-way locking of the forward helical teeth and the reverse helical teeth is realized through the insert blocks; through slider and spout cooperation, to the inserted block direction, through mentioning the ejector pin, realize the separation that inserted block and skewed tooth are connected.

Specifically, the top of ejector pin all is provided with the sleeve of perpendicular to ejector pin, wear to be equipped with the dead lever in the sleeve, the top of balladeur train is provided with the fixed block, be provided with two fixed slots on the fixed block, two the fixed slot with two the dead lever one-to-one. Through inserting the fixed slot with the one end of dead lever, realize the fixed of inserted block to locking mechanical system after with the skewed tooth separation.

Specifically, the top of the sleeve is provided with a pull ring. One hand is used for hooking the pull ring to lift the ejector rod, and the other hand is used for pushing the fixed rod, so that the operation of fixing the locking mechanism is more labor-saving and faster.

Specifically, two splint all are provided with a plurality of vertical lines in relative one side. The vertical lines increase the friction between the clamping plate and the workpiece, and avoid displacement and deflection in the stamping process.

Specifically, the balladeur train is in splint one side has all seted up the guide slot, it is provided with the guide arm to slide in the guide slot, the one end and the splint of guide arm are connected. The guide rod ensures that the clamping plate moves along a straight line, and the inclination of the local stress at one end of the clamping plate is avoided.

Specifically, a spring groove is formed in one side of the clamping plate of the sliding frame, and a push plate spring is connected between the bottom of the spring groove and the clamping plate. The spring pushes the clamping plate to enable the clamping plate to be automatically attached to the workpiece in the punch forming process.

Specifically, a pressing spring is connected between the top of the sliding groove and the sliding block. The push-down spring provides extra pushing force for the sliding block, and the insertion block can fall between the helical teeth.

Specifically, one slide rail is rotatably provided with a lead screw, one end of the lead screw is fixedly connected with a hand wheel, the lead screw is in threaded connection with one sliding frame, and the lead screw is in reverse threaded connection with the other sliding frame. By rotating the hand wheel, the two sliding frames synchronously move oppositely or oppositely, so that the workpiece is ensured to be positioned in the center of the die in the process of adjusting the distance between the sliding frames.

Specifically, one side of the toothed plate is provided with a handle. The toothed plate is pulled through the handle, so that force can be exerted conveniently to overcome the elastic force of the push plate spring.

The utility model has the advantages of it is following:

the utility model clamps and fixes the workpiece through the clamping plate of the limiting device, thereby preventing the workpiece from displacement and deflection in the stamping process; the positive oblique teeth of the toothed plate and the insert blocks of the locking mechanism are locked in a one-way mode, so that the clamping plates are tightly attached to the workpiece in the punch forming process, and when the upper die is separated from the workpiece, the clamping plates on the two sides still keep clamping the workpiece, and the workpiece is prevented from rebounding and deforming; the positive oblique teeth of the toothed plate are unidirectionally locked with the insert blocks of the locking mechanism, so that the toothed plate cannot move reversely after being reset, and the clamping plate is prevented from blocking the placement of a workpiece; the two sliding frames synchronously move in opposite directions or move in reverse directions by rotating the hand wheel so as to adapt to workpieces with different sizes and ensure that the workpieces are positioned between the upper die and the lower die.

Drawings

Fig. 1 is a schematic structural view of the punch fixing tool of the present invention;

fig. 2 is a top view of the punch fixing tool of the present invention;

fig. 3 is a side view of the punch fixing tool of the present invention;

fig. 4 is a schematic structural view of the locking mechanism and the forward helical teeth of the present invention;

fig. 5 is a schematic structural view of the locking mechanism and the reverse helical teeth of the present invention;

in the figure: 1-sliding rail, 2-sliding frame, 3-limiting device, 4-clamping plate, 5-toothed plate, 6-locking mechanism, 7-through groove, 8-forward oblique tooth, 9-reverse oblique tooth, 10-sliding block, 11-insert block, 12-ejector rod, 13-sliding groove, 14-sleeve, 15-fixing rod, 16-fixing block, 17-fixing groove, 18-pull ring, 19-vertical line, 20-guide groove, 21-guide rod, 22-spring groove, 23-push plate spring, 24-downward pressing spring, 25-lead screw, 26-hand wheel and 27-handle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1 to 5, the device comprises two slide rails 1, two carriages 2 and two limiting devices 3, wherein the two slide rails 1 are symmetrically arranged, the two carriages 2 are both connected with the two slide rails 1 in a sliding manner, and the two limiting devices 3 are respectively arranged on the two carriages 2;

stop device 3 includes splint 4, pinion rack 5 and two locking mechanical system 6, logical groove 7 has been seted up on the balladeur train 2, pinion rack 5 part slides and sets up in leading to the inslot 7, the one end and the splint 4 fixed connection of pinion rack 5, the top of pinion rack 5 is provided with forward skewed tooth 8 and reverse skewed tooth 9 side by side, two locking mechanical system 6 sets up respectively in the top of forward skewed tooth 8 and reverse skewed tooth 9.

In the scheme, two slide rails 1 are fixedly arranged on two sides of a lower die of a punch press, two sliding frames 2 are respectively slid to two sides of the lower die of the punch press, the two slide rails 1 and the two sliding frames 2 form a square shape together, a workpiece is placed between the two sliding frames 2, the two sliding frames 2 are moved, and after clamping plates 4 on two sides clamp the workpiece, the two sliding frames 2 are fixed to finish the fixation of the workpiece before punching; at the moment, one side of the clamping plate 4 is tightly attached to the sliding frame 2, the other side of the clamping plate is tightly attached to the workpiece, one locking mechanism 6 is connected with the forward helical teeth 8, and the other locking mechanism 6 is not contacted with the reverse helical teeth 9; the workpiece deforms along with the pressing of the upper die of the punch press, the edge of the workpiece contracts towards the center of the workpiece to a certain extent, a gap is formed between the clamping plate 4 and the workpiece, the toothed plate 5 is pushed to enable the clamping plate 4 to be in contact with the workpiece again, the workpiece is formed into a formed part after being subjected to punch forming, the workpiece is subjected to not only plastic deformation but also elastic deformation in the punch forming process, the workpiece can rebound normally after the upper die is separated from the workpiece, but the forward inclined teeth 8 are unidirectionally locked by the locking mechanism 6, so that the clamping plate 4 connected with the toothed plate 5 can only slide towards the workpiece, the rebound of the formed workpiece is prevented by the clamping plate 4, the workpiece keeps the standard shape after being subjected to punch forming, further processing of the formed part by workers is facilitated to solve the rebound force, and the size precision of the finally formed workpiece is improved; when the formed part is taken down, the locking at the forward oblique teeth 8 is released, the reverse oblique teeth 9 are locked in one direction through the locking mechanism 6, so that the toothed plate 5 only can slide to one side far away from the formed part, the toothed plate 5 is pulled outwards, the clamping plates 4 at two sides loosen the formed part, and the formed part can be separated from the tool; because the reverse helical teeth 9 are unidirectionally locked by the locking mechanism 6, the clamping plate 4 cannot slide towards the center of the tool, so that the next workpiece is prevented from being placed, and the tool is convenient to put into use again.

Further, locking mechanical system 6 includes slider 10, inserted block 11 and ejector pin 12, balladeur train 2 is in the spout 13 that the logical groove 7 of intercommunication was all seted up to forward skewed tooth 8 with reverse skewed tooth 9's top, slider 10 slides and sets up in spout 13, inserted block 11 sets up the bottom at slider 10, ejector pin 12 sets up the top at slider 10, the one end of ejector pin 12 is worn to extend outside balladeur train 2. In the scheme, one side of the oblique teeth of the positive oblique teeth 8, which is close to the clamping plate 4, is an inclined plane, and one side of the oblique teeth, which is far away from the clamping plate 4, is a vertical plane; one side of the oblique teeth of the reverse oblique teeth 9, which is close to the splint 4, is a vertical surface, and the side, which is far away from the splint 4, is an oblique surface; one side of the insert block 11 adjacent to the inclined plane is a cambered surface; the insert 11 can only move up and down along the sliding chute 13 along with the sliding block 10, in the stamping process, the insert 11 is inserted into an inclined tooth space of the positive inclined tooth 8, the toothed plate 5 moves towards a workpiece, the insert 11 slides to a position between the other pair of inclined teeth along the inclined plane of the inclined teeth, and falls under the action of gravity, the process of reciprocating is carried out until the clamping plate 4 is attached to the workpiece, and when the workpiece rebounds, the insert 11 is attached to the vertical surface of the inclined teeth to clamp the toothed plate 5; when the tool is reset, the toothed plate 5 can only slide towards the outer side of the tool, the movement between the insert 11 and the reverse helical teeth 9 is consistent with the movement between the forward helical teeth 8 in the vertical direction, and the insert 11 can be drawn out from the helical teeth by upwards lifting the ejector rod 12 so as to switch the movable direction of the toothed plate 5.

Further, the top end of the ejector rod 12 is provided with a sleeve 14 perpendicular to the ejector rod 12, fixing rods 15 penetrate through the sleeve 14, the top of the carriage 2 is provided with a fixing block 16, the fixing block 16 is provided with two fixing grooves 17, and the two fixing grooves 17 correspond to the two fixing rods 15 one to one. In the scheme, the ejector rod 12 is lifted upwards, when the fixed rod 15 is over against the fixed groove 17, the inserted block 11 is positioned above the helical teeth of the forward helical teeth 8 and the reverse helical teeth 9 and does not interfere with the moving path of the helical teeth, at the moment, the fixed rod 15 is inserted into the fixed groove 17, the locking mechanism 6 is fixed with the fixed block 16, and the corresponding teeth are in contact locking; and in the stamping process, the locking mechanism 6 at the top of the forward helical tooth 8 is fixed with the fixed block 16, and in the resetting process, the locking mechanism 6 at the top of the reverse helical tooth 9 is fixed with the fixed block 16.

Further, the top of the sleeve 14 is provided with a pull ring 18. In this scheme, catch on the pull ring 18 through one hand and mention ejector pin 12, the fixed lever 15 is pushed into fixed slot 17 to another hand, and convenient operation is laborsaving.

Further, the two clamping plates 4 are provided with a plurality of vertical lines 19 on opposite sides. In this scheme, the vertical slot on splint 4 increases the frictional force between splint 4 and the work piece, prevents that the work piece from taking place to deflect and slide, does not influence the ascending normal perk of work piece edge in stamping process simultaneously.

Further, the sliding frame 2 is provided with a guide groove 20 on one side of the clamping plate 4, a guide rod 21 is slidably arranged in the guide groove 20, and one end of the guide rod 21 is connected with the clamping plate 4. In this scheme, guide arm 21 can only follow and slide between the guide slot 20, makes splint 4 more stable at the removal in-process, avoids leading to splint 4's one end to take place the slope because of local atress.

Furthermore, the carriage 2 is provided with a spring groove 22 on one side of the clamping plate 4, and a push plate spring 23 is connected between the bottom of the spring groove 22 and the clamping plate 4. In this scheme, before the punching press, balladeur train 2 is hugged closely to splint 4, and push pedal spring 23 is compression state, contracts in spring groove 22, and in the punching press process, along with the edge of work piece shrinks to the work piece center gradually, splint 4 hugs closely the work piece edge all the time under push pedal spring 23's promotion.

Further, a pressing spring 24 is connected between the top of the sliding groove 13 and the sliding block 10. In this scheme, the pressure spring 24 provides the extra holding down force except gravity for slider 10 and inserted block 11, under the circumstances that does not hinder cardboard normal movement, guarantees that inserted block 11 can block in between the skewed tooth.

Furthermore, a screw rod 25 is rotatably arranged on the first slide rail 1, a hand wheel 26 is fixedly connected to one end of the screw rod 25, and the screw rod 25 is in threaded connection with the first sliding frame 2 and in reverse threaded connection with the other sliding frame 2. In this scheme, because the screw thread direction of two balladeur train 2 and lead screw 25 junction is opposite, so when lead screw 25 rotated, two balladeur train 2 moved to opposite direction in step, through rotating hand wheel 26, can adjust the interval between two balladeur train 2 to press from both sides tightly and fix the work piece of not unidimensional, increased application scope, because two balladeur train 2 are synchronous motion, so when adjusting 2 intervals of balladeur train, guaranteed that its centre of pressing from both sides is the center of mould all the time.

Further, a handle 27 is disposed on one side of the toothed plate 5. In this scheme, through grabbing handle 27 pulling pinion rack 5, conveniently exert oneself, help overcoming push pedal spring 23's elasticity, with splint 4 pulling to hugging closely balladeur train 2 department, accomplish the reseing of splint 4.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.

Claims (10)

1. The utility model provides a frock is fixed to punch press which characterized in that: the sliding rail device comprises two sliding rails (1), two sliding carriages (2) and two limiting devices (3), wherein the two sliding rails (1) are symmetrically arranged, the two sliding carriages (2) are both connected with the two sliding rails (1) in a sliding manner, and the two limiting devices (3) are respectively arranged on the two sliding carriages (2);

stop device (3) are including splint (4), pinion rack (5) and two locking mechanical system (6), logical groove (7) have been seted up on balladeur train (2), pinion rack (5) part slides and sets up in leading to groove (7), the one end and splint (4) fixed connection of pinion rack (5), the top of pinion rack (5) is provided with forward skewed tooth (8) and reverse skewed tooth (9) side by side, two locking mechanical system (6) set up respectively in the top of forward skewed tooth (8) and reverse skewed tooth (9).

2. The fixed frock of punch press of claim 1, characterized in that: locking mechanical system (6) are including slider (10), inserted block (11) and ejector pin (12), balladeur train (2) are in the spout (13) that the logical groove (7) were led to in intercommunication are all seted up to forward skewed tooth (8) with the top of reverse skewed tooth (9), slider (10) slide and set up in spout (13), inserted block (11) set up the bottom at slider (10), ejector pin (12) set up the top at slider (10), the one end of ejector pin (12) is worn to extend outside balladeur train (2).

3. The fixed frock of punch press of claim 2, characterized in that: the top of ejector pin (12) all is provided with sleeve (14) of perpendicular to ejector pin (12), wear to be equipped with dead lever (15) in sleeve (14), the top of balladeur train (2) is provided with fixed block (16), be provided with two fixed slots (17) on fixed block (16), two fixed slot (17) and two dead lever (15) one-to-one.

4. The fixed frock of punch press of claim 3, characterized in that: the top of the sleeve (14) is provided with a pull ring (18).

5. The fixed frock of punch press of claim 1, characterized in that: two splint (4) all are provided with a plurality of vertical lines (19) in relative one side.

6. The fixed frock of punch press of claim 1, characterized in that: the sliding frame (2) is arranged on one side of the clamping plate (4), a guide groove (20) is formed in one side of the clamping plate (4), a guide rod (21) is arranged in the guide groove (20) in a sliding mode, and one end of the guide rod (21) is connected with the clamping plate (4).

7. The fixed frock of punch press of claim 6, characterized in that: a spring groove (22) is formed in one side of the clamping plate (4) of the sliding frame (2), and a push plate spring (23) is connected between the bottom of the spring groove (22) and the clamping plate (4).

8. The fixed frock of punch press of claim 2, characterized in that: a pressing spring (24) is connected between the top of the sliding groove (13) and the sliding block (10).

9. The fixed frock of punch press of claim 1, characterized in that: one slide rail (1) is provided with a screw rod (25) in a rotating manner, one end of the screw rod (25) is fixedly connected with a hand wheel (26), the screw rod (25) is in threaded connection with one sliding frame (2), and the screw rod (25) is in reverse threaded connection with the other sliding frame (2).

10. The fixed frock of punch press of claim 1, characterized in that: one side of the toothed plate (5) is provided with a handle (27).

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