CN218615607U - Press machine - Google Patents

Abstract

The utility model discloses a press, include: a mounting base; the pressure head switches the subassembly, and the downside of mount pad is located to pressure head switching subassembly along vertical direction movablely, and the pressure head switches the subassembly and includes: the switching piece is provided with a plurality of pressure heads, the pressure heads are suitable for extending downwards from the switching seat to apply pressure to a workpiece, the switching piece is movably arranged on the switching seat to switch the pressure heads, and the driving piece is arranged on the switching seat and is suitable for driving the switching piece to move relative to the switching seat; and the press-fitting driving assembly is arranged on the mounting seat, and the movable end of the press-fitting driving assembly penetrates through the switching seat and is separably matched with the switching piece along the vertical direction. According to the utility model discloses a press can accomplish the change of pressure head and exert pressure to the work piece through the expansion end of adjustment pressure equipment drive assembly and the contact state of driving piece, can simplify the expansion end of pressure equipment drive assembly and the cooperation structure of pressure head, improves and installs and remove efficiency, the later maintenance of still being convenient for.

Description

Press machine

Technical Field

The utility model belongs to the technical field of press device technique and specifically relates to a press is related to.

Background

The press equipment for production and assembly in the market at present mostly adopts a press matched with one set of pressing head tool, and along with the technical development progress, a press matched with two sets or more sets of pressing head tools is gradually derived to adapt to rapid production and increase the production efficiency. However, in practical application, two or more press head tools matched with one press machine are complex in design and multiple in moving steps, so that the production and assembly costs are high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a press, the press can accomplish the switching of a plurality of pressure heads, and simple structure is convenient for install and remove.

According to the utility model discloses a press, include: a mounting base; the pressure head switches the subassembly, the pressure head switches the subassembly and sets up in the downside of mount pad along vertical direction movablely, the pressure head switches the subassembly and includes: the switching mechanism comprises a switching seat, a switching piece and a driving piece, wherein the switching piece is provided with a plurality of pressure heads, the pressure heads are suitable for extending downwards from the switching seat to apply pressure to a workpiece, the switching piece is movably arranged on the switching seat to switch the pressure heads, and the driving piece is arranged on the switching seat and is suitable for driving the switching piece to move relative to the switching seat; and the movable end of the press-fitting driving assembly penetrates through the switching seat and is separably matched with the switching piece along the vertical direction.

According to the utility model discloses a press, the structure is that locate a plurality of pressure heads and switch the piece, switches the piece and switches the seat motion relatively under the drive of driving piece in order to accomplish the change of pressure head, and, the movable end of pressure equipment drive assembly can separately cooperate with switching piece, from this, can accomplish the change of pressure head and exert pressure to the work piece through adjusting the contact state of movable end and driving piece of pressure equipment drive assembly, the theory of action is comparatively simple, easily realizes; in addition, compare in the prior art and need compare the movable end of pressure equipment drive assembly and the mode that the pressure head after switching passes through mechanical connection, can simplify the cooperation structure of the movable end of pressure equipment drive assembly and pressure head, thereby reduce spare part quantity and simplify overall structure, improve and install and remove efficiency, reduce production manufacturing cost, the while still be convenient for later maintenance.

According to the utility model discloses a some embodiments, the press has first state and second state under the first state, pressure equipment drive assembly's expansion end is suitable for to press switch the piece, it is suitable for right to switch one of them pressure head on the piece pressure is exerted to the work piece under the second state, pressure equipment drive assembly's expansion end with switch the piece separation, the driving piece is suitable for the drive it is relative to switch the piece switch seat motion in order to switch the pressure head.

Further, the press-fitting driving assembly includes: the pressure rod is arranged on the upper side of the mounting seat and provided with a piston, and the piston movably penetrates through the mounting seat along the vertical direction; the floating head is positioned on the lower side of the mounting seat, one end of the floating head is connected with the free end of the piston, and the other end of the floating head penetrates through the switching seat and is detachably matched with the switching piece along the vertical direction.

Still further, the switch seat comprises: the switch comprises a top plate, a bottom plate and a spacer positioned between the top plate and the bottom plate, wherein the top plate, the bottom plate and the spacer are connected and jointly define a moving space, the switch is slidably arranged in the moving space along the horizontal direction, a pressure head extends downwards from the bottom plate, and the bottom end of a floating head penetrates through the top plate and extends into the moving space to be detachably matched with the switch.

Furthermore, it dodges the groove along radial inside sunken to float overhead being formed with, the roof card is gone into dodge the groove, it is greater than to dodge the groove in the height of vertical direction the thickness of roof plate under the second state, dodge the diapire in groove with the diapire contact of roof plate, dodge the roof in groove with interval between the roof of roof is greater than float the head with switch interval between the piece.

In some embodiments, a sliding groove extending in the length direction is formed in the base plate, an escape opening penetrating in the thickness direction is formed in the bottom wall of the sliding groove, the switching member is formed as a slider adapted to the sliding groove, the switching member is slidably disposed in the sliding groove, and when the switching member slides in the sliding groove in the length direction of the base plate, the plurality of pressing heads move in the escape opening along the length direction of the base plate with the switching member.

In some embodiments, the driving member is disposed on the spacer, and an output end of the driving member extends into the movable space and is connected to the switching member to drive the switching member to slide in the horizontal direction.

According to some embodiments of the present invention, the distance piece includes two, two the distance piece is located respectively switch the both sides of a slip direction, the pressure head switch assembly still includes: the two buffer limiting parts are respectively positioned on the two spacing pieces and in the movable space, and the two buffer limiting parts are suitable for respectively limiting the switching piece.

According to the utility model discloses a some embodiments, the switching piece includes: the moving block is movably arranged on the switching seat; the quick-change head, the quick-change head include with the pressure head one-to-one is a plurality of, the quick-change head is located the motion piece, every the quick-change head with correspond the pressure head can be dismantled and be connected.

In some embodiments, the press further comprises: the guide assembly comprises a plurality of guide bearings and a plurality of guide shafts, the guide bearings are arranged on the mounting seat at intervals and are symmetrically distributed on two sides of the press-fitting driving assembly, the guide shafts correspond to the guide bearings one to one, the bottom end of each guide shaft is connected with the switching seat, and each guide shaft movably penetrates through the corresponding guide bearing along the vertical direction.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic view of a press according to the present invention;

FIG. 2 is a schematic view of a ram switch assembly of the press shown in FIG. 1;

FIG. 3 is a partial schematic view of the ram switch assembly shown in FIG. 2;

fig. 4 is a schematic view of the press head switching assembly and press-fitting drive assembly of the press shown in fig. 1, with the press in fig. 4 in a second state.

Reference numerals:

a press 100:

the pressure head switching component 1 is provided with a pressure head switching component,

the switching base 11, the top plate 111, the spacer 112, the bottom plate 113, the sliding groove 1131, the escape opening 1132, the movable space 114,

a switching member 12, a moving block 121, a quick-change head 122, a coupling protrusion 123, a coupling block 124,

a driving part 13, a buffering limiting part 14,

a press-fitting driving component 2, a pressure lever 21, a floating head 22, an avoiding groove 221,

the guide assembly 3, the guide bearing 31, the guide shaft 32,

the pressure head 4, the connecting recess 41,

a plug pin 5 and a mounting seat 6 are quickly pulled out.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A press 100 according to an embodiment of the present invention is described below with reference to fig. 1-4.

According to the utility model discloses press 100, include: the device comprises a mounting seat 6, a pressure head switching assembly 1 and a press-fitting driving assembly 2.

Wherein, pressure head switching assembly 1 locates the downside of mount pad 6, and pressure head switching assembly 1 can move along vertical direction (be the up-down direction shown in fig. 1), and pressure head switching assembly 1 can include: a switch seat 11, a switch piece 12 and a driving piece 13. Wherein, a plurality of pressing heads 4 are arranged on the switching piece 12, and the plurality of pressing heads 4 are all suitable for extending downwards from the switching seat 11 to apply pressure to the workpiece. The switching member 12 is movably provided to the switching base 11 to switch the ram 4 for applying pressure to the workpiece, and for example, the movement form of the switching member 12 may be rotation, sliding, or the like. Here, the switching ram 4 refers to a mechanism that moves any one of a plurality of rams 4 provided on the switching member 12 to a position suitable for applying a pressing force to a workpiece by moving the switching member 12. The driving member 13 is disposed on the switch base 11, and the driving member 13 is adapted to drive the switch member 12 to move relative to the switch base 11. The press-fitting driving assembly 2 is arranged on the mounting seat 6, and the movable end of the press-fitting driving assembly 2 penetrates through the switching seat 11 and is detachably matched with the switching piece 12 along the vertical direction.

For example, as shown in fig. 1, the mounting seat 6 may be formed into a square flat plate shape, the ram switching assembly 1 is disposed at a lower side of the mounting seat 6, the ram switching assembly 1 is connected to the mounting seat 6 and is adapted to move in an up-and-down direction with respect to the mounting seat 6, the switching seat 11 may be formed into a square box shape, the switching member 12 may be disposed at an inner side of the switching seat 11, the switching member 12 is provided with two rams 4, the switching member 12 is movable with respect to the switching seat 11 so as to enable one of the two rams 4 to be opposite to the workpiece in the up-and-down direction, so that the ram 4 applies a pressure to the workpiece, one portion of the driving member 13 is disposed at an outer side of the switching seat 11, and the other portion is adapted to extend into an inner side of the switching seat 11 and is in transmission connection with the switching member 12, so that the driving member 13 can drive the switching member 12 to move to realize switching of the switching ram 4. And the movable end of the press-fitting driving component 2 penetrates through the switching seat 11 and is separably matched with the switching piece 12 along the vertical direction, so that the press-fitting driving component 2 can drive the whole press head switching component 1 to move along the vertical direction and can be abutted against or separated from the switching piece 12.

The working principle of the press 100 of the present embodiment is as follows: when the press fitting driving component 2 drives the press head switching component 1 to move downwards until the press head 4 is contacted with the workpiece, the movable end of the press fitting driving component 2 continues to move downwards, at this time, the switching seat 11 does not move downwards any more, but the movable end can continue to move downwards relative to the switching seat until the movable end abuts against the switching piece 12, at this time, the movable end of the press fitting driving component 2 can transmit pressure to the workpiece sequentially through the switching piece 12 and the press head 4, and meanwhile, the movable end is beneficial to limiting the switching piece 12 so as to prevent the press head 4 from shifting; when the pressure head 4 needs to be replaced, the movable end of the press-fitting driving assembly 2 can move upwards and be separated from the switching piece 12, and at the moment, the driving piece 13 drives the switching piece 12 to move relative to the switching seat 11, so that the pressure head 4 is switched.

According to the embodiment of the present invention, the pressing machine 100 is configured to locate a plurality of pressing heads 4 on the switching member 12, the switching member 12 is driven by the driving member 13 to move relative to the switching seat 11 to complete the replacement of the pressing heads 4, and the movable end of the press-fitting driving assembly 2 is detachably engaged with the switching member 12, so that the pressing heads 4 can be replaced and pressure can be applied to the workpiece by adjusting the contact state between the movable end of the press-fitting driving assembly 2 and the driving member 13, and the operation principle is simple and easy to implement; in addition, compare in the prior art need with the expansion end of pressure equipment drive assembly 2 and the mode of pressure head 4 after the switching through mechanical connection, can simplify the cooperation structure of the expansion end of pressure equipment drive assembly 2 and pressure head 4, thereby reduce spare part quantity and simplify overall structure, improve and install and remove efficiency, reduce production manufacturing cost, the later maintenance of still being convenient for simultaneously.

According to some embodiments of the utility model, press 100 has first state and second state, and under the first state, the expansion end of pressure equipment drive assembly 2 is suitable for supporting to press and switches piece 12, and one of them pressure head 4 on the piece 12 of switching is suitable for exerting pressure to the work piece, that is to say, under the first state, the expansion end of pressure equipment drive assembly 2 can loop through and switch piece 12, pressure head 4 and come to transmit and exert pressure to the work piece. In the second state, the movable end of the press-fitting driving assembly 2 is separated from the switching member 12, the movement of the switching member 12 is not limited by the press-fitting driving assembly 2, and the driving member 13 can drive the switching member 12 to move relative to the switching seat 11 to switch the pressure head 4. Therefore, the press 100 can replace the press head 4, and the whole structure is simple. It is to be understood that the second state is a normal state in which the press 100 does not apply pressure to the workpiece, and the first state is an operating state in which the press 100 applies pressure to the workpiece.

Further, referring to fig. 1, the press-fitting driving assembly 2 may include: a strut 21 and a floating head 22. The pressing rod 21 is arranged on the upper side of the mounting base 6, the pressing rod 21 is provided with a piston, the piston penetrates through the mounting base 6 in a movable mode in the vertical direction, the floating head 22 is located on the lower side of the mounting base 6, one end of the floating head 22 is connected with the free end of the piston, the other end of the floating head 22 penetrates through the switching base 11 and is detachably matched with the switching piece 12 in the vertical direction, in this way, when the pressing machine 100 applies pressure to a workpiece, the piston of the pressing rod 21 moves downwards and drives the switching base 11, the switching piece 12 and the pressing head 4 to integrally move downwards through the floating head 22, after the pressing head 4 is contacted with the workpiece, the piston continues to move downwards, the floating head 22 moves downwards relative to the switching base 11 and is abutted to the switching piece 12, in this way, the floating head 22 can transmit the pressure of the piston to the switching piece 12 and the pressing head 4 and finally to the workpiece, when the pressing head 4 needs to be replaced, the piston of the pressing rod 21 can move upwards and drive the floating head 22 to be separated from the switching piece 12 to be contacted with the switching piece 12, and the switching piece 12 can freely move under the driving of the pressing head 13, and then the replacement of the pressing head 4 can be completed.

Still further, with reference to fig. 1-3, the switch seat 11 may include: a top plate 111, a bottom plate 113, and a spacer 112, wherein the top plate 111 and the bottom plate 113 may be formed as a square plate, the spacer 112 is provided between the top plate 111 and the bottom plate 113 to space the top plate 111 and the bottom plate 113 apart, and the top plate 111, the spacer 112, and the bottom plate 113 are connected in a vertical direction, for example, the three may be connected by a bolt fastener sequentially passing through the top plate 111, the bottom plate 113, and the spacer 112 in the vertical direction. The top plate 111, the bottom plate 113, and the spacer 112 collectively define a movable space 114. The switch member 12 is slidably disposed in the movable space 114 in a horizontal direction (e.g., left and right directions as viewed in fig. 1), the pressure head 4 extends downward from the bottom plate 113, and the bottom end of the floating head 22 passes through the top plate 111 and extends into the movable space 114 to detachably engage with the switch member 12, e.g., the top plate 111 may be provided with a fitting hole from which the bottom end of the floating head 22 may be inserted into the movable space 114. Thus, the structure of the switching seat 11 and the matching structure of the switching seat 11 and the floating head 22 are simple, the assembly, disassembly and maintenance are convenient, and the switching seat 11 can protect the switching piece 12.

Further, referring to fig. 1 and 4, an avoiding groove 221 which is recessed inward in the radial direction is formed on the floating head 22, the top plate 111 is clamped into the avoiding groove 221, the height of the avoiding groove 221 in the vertical direction is greater than the thickness of the top plate 111, in the second state, the bottom wall of the avoiding groove 221 is in contact with the bottom wall of the top plate 111, and the distance a between the top wall of the avoiding groove 221 and the top wall of the top plate 111 is greater than the distance b between the floating head 22 and the switching member 12. In other words, in the non-operating state of the press 100, due to the self-weight of the ram switch assembly 1 and the ram 4, the bottom wall of the escape groove 221 and the bottom wall of the top plate 111 are in supporting engagement, so that a first gap is formed between the top wall of the escape groove 221 and the top wall of the top plate 111, and in this state, the bottom end of the ram 4 and the switch member 12 are in a mutually separated state and have a second gap, so that when the press 100 is turned to the operating state and applies pressure to the workpiece, after the ram 4 is in contact with the workpiece, the piston of the pressing rod 21 can continue to push the floating head 22 downward to move, at this time, the switch seat 11 will move upward relative to the floating head 22 to reduce the first gap, and the second gap is expanded, and the width a of the first gap is greater than the width b of the second gap, so that the floating head 22 can be ensured to have enough stroke to move downward and to be in contact with the switch member 12, thereby better transmitting the pressure. Meanwhile, as the floating head 22 is separably matched with the switching piece 12 and has no direct connection relation, parts for connection can be omitted, so that the integral structure is simplified, and the assembly and maintenance are convenient.

In some embodiments, referring to fig. 1 and 3, a sliding groove 1131 extending along a length direction (i.e., a left-right direction shown in fig. 3) is formed on the bottom plate 113, an escape opening 1132 penetrating along a thickness direction is formed on a bottom wall of the sliding groove 1131, the switching member 12 is formed as a slider adapted to the sliding groove 1131, the switching member 12 is slidably disposed in the sliding groove 1131, when the switching member 12 slides in the sliding groove 1131 along the length direction of the bottom plate 113, the plurality of plungers 4 move in the escape opening 1132 along the length direction of the bottom plate 113 along with the switching member 12, so that by providing the escape opening 1132, the plurality of plungers 4 can protrude from the switching seat 11 conveniently, and the movement of the bottom plate 113 interfering with the switching member 12 can be avoided, and in addition, the bottom plate 113 slides in the sliding groove 1131 on the switching member 12, the switching member 12 can be prevented from escaping of the switching member 12, and the stability of the sliding process can be improved.

In some embodiments, referring to fig. 1-3, the spacer 112 is formed in a block shape, the driving member 13 is disposed on the spacer 112, for example, the driving member 13 is disposed on a side of the spacer 112 facing away from the switching member 12, i.e., outside the movable space 114, and an output end of the driving member 13 extends into the movable space 114 and is in transmission connection with the switching member 12, so that the driving member 13 can drive the switching member 12 to slide along the horizontal direction, so that the driving member 13 is disposed on the spacer 112 and outside the movable space 114, thereby avoiding the driving member 13 occupying an inner space of the movable space 114, facilitating the reduction of the volume of the switching seat 11, and facilitating assembly and maintenance.

Alternatively, the driving member 13 is a cylinder, and the cylinder is disposed on a side of the spacer 112 facing away from the switching member 12, and a piston of the cylinder can extend into the moving space 114 through the spacer 112 to drive the switching member 12 to move.

According to some embodiments of the present invention, referring to fig. 2 and 3, the two spacers 112 may be included, the two spacers 112 are respectively located at two sides of the sliding direction of the switching member 12, and the pressure head switching assembly 1 may further include: the two buffering limiting parts 14, specifically, the buffering limiting parts 14 may be hydraulic buffering limiting sleeves, the two buffering limiting parts 14 are respectively located on the two spacing members 112 and located in the moving space 114, and the two buffering limiting parts 14 are adapted to respectively limit the position of the switching part 12, so that the driving part 13 can be limited to push the switching part 12 to slide left and right in the moving space 114, and it is ensured that the central axis of the pressure head 4 or the pressure head 4 is collinear with the central axis of the floating head 22.

According to some embodiments of the present invention, referring to fig. 1-4, the switching piece 12 may include: a motion block 121 and a quick-change head 122. Wherein, the moving block 121 is movably disposed on the switch seat 11, for example, the moving block 121 is slidably disposed in the sliding groove 1131 of the bottom plate 113 of the switch seat 11. The quick-change heads 122 include a plurality of heads corresponding to the pressing heads 4 one by one, the quick-change heads 122 are disposed on the moving block 121, and each quick-change head 122 is detachably connected to a corresponding pressing head 4. For example, the bottom end of the quick-change head 122 is formed with a connection convex portion 123, the top end of the pressure head 4 is formed with a connection concave portion 41, the connection convex portion 123 is matched with the connection concave portion 41, the connection convex portion 123 is formed with a first connection hole penetrating in the radial direction, the side wall of the connection concave portion 41 is formed with a first connection hole penetrating in the radial direction, and the quick-change head 122 and the pressure head 4 are connected by the quick-change latch 5 sequentially penetrating through the second connection hole and the first connection hole. Optionally, the axial one end of pulling out bolt 5 soon is equipped with the pull ring, and the other end is equipped with the marble, and the marble can avoid pressure head 4 in the motion process, pulls out bolt 5 soon and drops. An operator can hook the pull ring with fingers to insert and pull the quick-pull plug pin 5, so that the connection or the separation of the press head 4 and the quick-change head 122 is completed. Therefore, the press head 4 can be conveniently assembled and disassembled.

In a specific example, the switching member 12 may further include two connection blocks 124, the two connection blocks 124 are respectively disposed at two ends of the moving block 121 in the sliding direction, the connection blocks 124 may be bolted to the moving block 121, and the output end of the driving member 13 may be connected to the connection blocks 124 through a floating joint, so that the driving member 13 is in transmission connection with the moving block.

In some embodiments, referring to fig. 1, press 100 further comprises: a guide assembly 3. Specifically, direction subassembly 3 includes a plurality of guiding bearing 31 and a plurality of guiding axle 32, a plurality of guiding bearing 31 interval arrangements are in 6 and the symmetric distribution in pressure equipment drive assembly 2's both sides of mount pad, a plurality of guiding axle 32 and a plurality of guiding bearing 31 one-to-ones, the bottom of every guiding axle 32 all links to each other with switching seat 11, every guiding axle 32 all wears to locate corresponding guiding bearing 31 along vertical direction movablely, thus, when pressure equipment drive assembly 2 drive pressure head switching assembly 1 drives pressure head 4 and moves along the up-and-down direction, direction subassembly 3 can be for pressure head switching assembly 1 direction, prevent pressure head 4 and work piece dislocation, ensure that pressure head 4 can the direct alignment work piece, and simultaneously, be favorable to promoting the stability when pressure head switching assembly 1 moves.

In a specific example, the guide bearing 31 is a linear bearing, so that the guide bearing 31 is easy to obtain and convenient to replace later, and cost reduction is facilitated.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A press, characterized by comprising:

a mounting seat;

the pressure head switches the subassembly, the pressure head switches the subassembly and sets up in the downside of mount pad along vertical direction movablely, the pressure head switches the subassembly and includes: the switching mechanism comprises a switching seat, a switching piece and a driving piece, wherein the switching piece is provided with a plurality of pressure heads, the pressure heads are suitable for extending downwards from the switching seat to apply pressure to a workpiece, the switching piece is movably arranged on the switching seat to switch the pressure heads, and the driving piece is arranged on the switching seat and is suitable for driving the switching piece to move relative to the switching seat;

and the press-fitting driving assembly is arranged on the mounting seat, and the movable end of the press-fitting driving assembly penetrates through the switching seat and is detachably matched with the switching piece along the vertical direction.

2. The press of claim 1, wherein the press has a first state in which the movable end of the press-fit drive assembly is adapted to press against the switch and one of the rams on the switch is adapted to apply pressure to the workpiece, and a second state in which the movable end of the press-fit drive assembly is disengaged from the switch and the drive member is adapted to drive the switch relative to the switch block to switch the rams.

3. The press according to claim 2, wherein said press-fitting drive assembly comprises:

the pressure lever is arranged on the upper side of the mounting seat and provided with a piston, and the piston movably penetrates through the mounting seat along the vertical direction;

the floating head is positioned on the lower side of the mounting seat, one end of the floating head is connected with the free end of the piston, and the other end of the floating head penetrates through the switching seat and is detachably matched with the switching piece along the vertical direction.

4. The press of claim 3, wherein the switch block comprises: the switching piece is arranged in the movable space in a sliding way along the horizontal direction, the pressure head extends downwards from the bottom plate,

the bottom end of the floating head penetrates through the top plate and extends into the movable space to be detachably matched with the switching piece.

5. The press according to claim 4, wherein the floating head is formed with an avoiding groove which is recessed radially inward, the top plate is clamped into the avoiding groove, the height of the avoiding groove in the vertical direction is greater than the thickness of the top plate,

under the second state, the bottom wall of the avoiding groove is in contact with the bottom wall of the top plate, and the distance between the top wall of the avoiding groove and the top wall of the top plate is larger than the distance between the floating head and the switching piece.

6. The press of claim 4, wherein the bottom plate is formed with a sliding groove extending in a longitudinal direction, a bottom wall of the sliding groove is formed with an escape opening penetrating in a thickness direction, the switch member is formed as a slider adapted to the sliding groove, the switch member is slidably provided in the sliding groove,

when the switching piece slides in the sliding groove along the length direction of the bottom plate, the plurality of pressing heads move in the avoiding opening along the length direction of the bottom plate along with the switching piece.

7. The press of claim 4, wherein the driving member is disposed on the spacer, and an output end of the driving member extends into the movable space and is connected to the switching member to drive the switching member to slide in the horizontal direction.

8. The press of claim 4, wherein the spacers include two, the two spacers being located on both sides of the switch sliding direction, respectively, the ram switch assembly further comprising: the two buffer limiting parts are respectively positioned on the two spacing pieces and in the movable space, and the two buffer limiting parts are suitable for respectively limiting the switching piece.

9. The press of claim 1, wherein the switch comprises:

the moving block is movably arranged on the switching seat;

the quick-change head, the quick-change head include with the pressure head one-to-one a plurality of, the quick-change head is located the motion piece, every the quick-change head with correspond the pressure head can be dismantled and be connected.

10. The press of claim 1, further comprising: the guide assembly comprises a plurality of guide bearings and a plurality of guide shafts, the guide bearings are arranged on the mounting seat at intervals and are symmetrically distributed on two sides of the press-fitting driving assembly, the guide shafts correspond to the guide bearings one to one, the bottom end of each guide shaft is connected with the switching seat, and each guide shaft movably penetrates through the corresponding guide bearing along the vertical direction.

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