Automatic clamping device for bridge steel mould production

Abstract

The invention discloses an automatic clamping device for bridge steel die production, and belongs to the technical field of bridge steel die production, the automatic clamping device comprises a forging press and an execution module, the execution module comprises a clamping piece and a driving piece, the clamping piece comprises an electric parallel clamping jaw, and two movable jaws of the electric parallel clamping jaw are both provided with tail end structures. After stress generated in the forging process of a blank acts on the tail end structure, in the process of driving the main plug component in the tail end structure to elastically retract, the main plug component continuously extrudes and injects insulation driving liquid into the auxiliary plug cavity through the connecting channel, and therefore the auxiliary plug component capable of elastically stretching out and drawing back is driven to be tightly pressed on the surface of the blank being forged; through the elastic deformation capacity of the clamping piece, the clamping piece can better adapt to the stress effect of the blank in the forging process, damage to the clamping device caused by stress concentration is effectively avoided, meanwhile, additional clamping compensation can be conducted on the blank, and therefore stable clamping of the blank in the forging process is guaranteed, and the production quality of the bridge steel die is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge steel mould production, and more specifically, to an automatic clamping device for bridge steel mould production. Background Art

[0002] As a temporary support measure, bridge steel formwork is an indispensable and important tool for bridge construction and has been widely used in the field of modern construction. Whether it is a large-scale infrastructure construction project such as highways, railways, urban rail transit, or water conservancy and electricity, bridge steel formwork plays a huge role.

[0003] In the manufacturing of bridge steel molds, key stress-bearing parts such as the main beams and cross beams in bridge steel molds are large in size and need to withstand large bending moments and shear forces. They need to be produced using forging technology to ensure their overall performance and safety.

[0004] The production of forgings in bridge steel molds is to clamp and flip the forgings being forged on the forging operating table with a clamping device, so as to complete the comprehensive forging operation of the forgings. However, in the process of forging metal blanks of bridge steel molds with existing forging equipment, due to the effect of stress, the clamping device in the forging equipment is prone to plastic deformation when clamping the blank being hammered and forged, and when the clamping device is under the effect of forging stress for a long time, it is also easy to cause cracks or sudden fractures in the clamping device, resulting in the interruption of the forging process, resulting in a decrease in the production efficiency of the bridge steel mold, and it will also pose a safety threat to the operators, posing a great safety hazard.

[0005] In view of this, we propose an automatic clamping device for bridge steel mold production. Summary of the invention

[0006] Technical problem to be solved: The purpose of the present invention is to provide an automatic clamping device for bridge steel mold production, which solves the technical problems raised in the above-mentioned background technology.

[0007] Technical solution: The technical solution of the present invention provides an automatic clamping device for bridge steel mold production, including a forging machine and an execution module, the execution module includes a clamping member and a driving member for driving the clamping member to move, the clamping member includes an electric parallel clamping jaw, and both movable jaws of the electric parallel clamping jaw are provided with an end structure, the end structure includes an insulating end seat connected to the movable jaw of the electric parallel clamping jaw, and the insulating end seat is respectively provided with a main plug cavity, a secondary plug cavity and a connecting channel, and the main plug cavity and the secondary plug cavity are connected through the connecting channel;

[0008] A main plug component is sealed and slidably inserted in the end opening of the main plug cavity, and the main plug cavity is also filled with an insulating driving liquid. The main plug component includes a V-shaped groove, and an elastically retractable secondary plug component is sealed and slidably inserted in the secondary plug cavity. The outer wall of the insulating end seat is respectively provided with a first schematic unit and a second schematic unit at positions corresponding to the main plug cavity and the V-shaped groove. The first schematic unit includes a switch fixed terminal and a switch spring sheet that are located in the main plug cavity and arranged relatively, and the switch spring sheet is connected to the main plug component. The second schematic unit includes a forced sliding rod that is slidably inserted on the inner wall of the heat-insulating pressure cylinder seat and has an end extending into the V-shaped groove and abutting against the inner wall of the V-shaped groove, and a fixed switch terminal connected to the insulating end seat, and a spring sheet mechanism is connected to the forced sliding rod;

[0009] When the main plug member is completely retracted into the main plug cavity, the switch movable spring contacts the switch fixed terminal and triggers the first signal unit to open;

[0010] When the main plug member retracts and the V-shaped groove drives the spring mechanism to contact the fixed switch terminal, the second signal unit is triggered to open. When the spring mechanism disengages from the V-shaped groove, the spring mechanism disengages from the fixed switch terminal.

[0011] As an optional solution of the technical solution of the document of the present invention, the main plug component includes a heat-insulating pressure cylinder seat that is sealed and slides in the end opening of the main plug cavity, and a V-shaped groove ring is arranged on the side wall of the heat-insulating pressure cylinder seat;

[0012] One end of the heat-insulating pressure cylinder seat extending into the main plug cavity is connected to a first pressure spring, and the other end of the first pressure spring is connected to the end of the main plug cavity.

[0013] As an optional solution of the technical solution of the document of the present invention, the first schematic unit also includes a first schematic light, and the first schematic light is connected to the side wall of the insulating end seat;

[0014] The switch fixed terminal is located inside the main plug cavity, and one end of the switch fixed terminal away from the switch movable spring is connected to the end of the main plug cavity;

[0015] The switch moving spring is connected to the end of the inner cavity of the heat-insulating pressure cylinder seat.

[0016] As an optional solution of the technical solution of the document of the present invention, the switch movable spring and the switch fixed terminal are electrically connected to the first indicator light, and when the switch movable spring moves toward the direction of the switch fixed terminal and contacts the end of the switch fixed terminal, the first indicator light in the first indicator unit is triggered to turn on.

[0017] As an optional solution of the technical solution of the document of the present invention, when the first pressure spring in the main plug component is in an initial relaxed state, the switch movable spring piece and the switch fixed terminal do not contact each other.

[0018] As an optional solution of the technical solution of the document of the present invention, the second schematic unit also includes a second schematic light connected to the side wall of the insulating end seat;

[0019] The spring mechanism includes a side insulating frame connected to the side wall of the forced sliding rod;

[0020] A passive switch spring piece that cooperates with the fixed switch terminal is connected to the side wall of the side insulating frame;

[0021] The side insulating frame is also connected with a return spring.

[0022] As an optional solution of the technical solution of the document of the present invention, a movable cavity connected to the atmosphere is opened on the side wall of the insulating end seat, and a dustproof net is connected to the side wall of the insulating end seat, and the dustproof net is blocked at the end opening of the movable cavity;

[0023] One end of the forced sliding rod away from the V-shaped groove penetrates into the movable groove, and the forced sliding rod is slidably connected in the movable groove;

[0024] One end of the return spring away from the side insulating frame is connected to the end of the movable groove;

[0025] The fixed switch terminal is connected to the side wall of the movable groove, and the side wall surface of the fixed switch terminal is flush with the side wall surface of the movable groove.

[0026] As an optional solution of the technical solution of the document of the present invention, the free end of the passive switch spring is closely attached to the side wall surface of the active groove;

[0027] The passive switch spring and the fixed switch terminal are both electrically connected to the second indicator light, and when the passive switch spring moves toward the fixed switch terminal and contacts the fixed switch terminal, the second indicator light in the second indicator unit is triggered to turn on;

[0028] During the retraction of the main plug member, the passive switch spring moves toward the fixed switch terminal, and when the end of the forced sliding rod close to the V-shaped groove is disengaged from the V-shaped groove, the free end of the passive switch spring is disengaged from the side wall surface of the fixed switch terminal;

[0029] When the return spring in the spring mechanism is in an initial relaxed state, the passive switch spring and the fixed switch terminal are not in contact with each other.

[0030] As an optional solution of the technical solution of the document of the present invention, the auxiliary plug component includes a reciprocating plug that slides in a sealing manner inside the auxiliary plug cavity;

[0031] A reverse pressure rod is slidably inserted into the opening at the end of the reciprocating plug, and a second pressure spring is connected to one end of the reverse pressure rod extending into the inner cavity of the reciprocating plug, and one end of the reverse pressure rod away from the second pressure spring extends out of the auxiliary plug cavity, and one end of the second pressure spring away from the reverse pressure rod is connected to the end of the inner cavity of the reciprocating plug;

[0032] When the main plug member is completely retracted into the main plug cavity, the reciprocating plug does not extend out of the auxiliary plug cavity.

[0033] As an optional solution of the technical solution of the present invention, the driving member includes a longitudinal linear motor and two symmetrically arranged guide slides, and the longitudinal linear motor is located between the two guide slides;

[0034] Each guide slide is slidably connected to a slide seat, and the guide slide's mover seat and the two slide seats are commonly connected to a transverse linear motor, and the angle between the transverse linear motor and the longitudinal linear motor is 90°;

[0035] An electric telescopic rod is connected to the mover seat of the transverse linear motor, a fixed bracket is connected to the free end of the electric telescopic rod, and a reduction servo motor is connected to the fixed bracket;

[0036] The fixed end of the electric parallel clamp is rotatably connected to a side of the fixed bracket away from the reduction servo motor through a rotating shaft, and the output shaft of the reduction servo motor is connected to the end of the rotating shaft.

[0037] Beneficial effects: One or more technical solutions provided in the technical solution of the present application have at least the following technical effects or advantages: 1. When the blank used for producing the bridge steel mold is clamped by the clamping member, after the stress generated by the blank during the forging process acts on the terminal structure, the main plug component in the terminal structure is driven to undergo elastic retreat. During the process, the main plug component continuously squeezes and injects the insulating driving liquid into the secondary plug cavity through the connecting channel, thereby driving the elastically retractable secondary plug component to press tightly against the surface of the blank being forged, so that the clamping member can better adapt to the stress of the blank during the forging process through its elastic deformation ability, effectively avoiding damage to the clamping device due to stress concentration, and can also perform additional clamping compensation on the blank, thereby ensuring stable clamping of the blank during the forging process and ensuring the production quality of the bridge steel mold.

[0038] 2. After the blank is clamped between the two end structures in the electric parallel clamps, the blank is continuously clamped by the electric parallel clamps. When the clamping force of the end structure on the blank is within a preset range, the main plug member continuously elastically retreats into the main plug cavity. After the V-groove drives the spring mechanism to contact the fixed switch terminal, the second schematic unit is triggered to open, and after the end of the sliding rod close to the V-groove is forced to disengage from the V-groove, the free end of the passive switch spring is disengaged from the side wall surface of the fixed switch terminal, and the second schematic unit is closed. Through the prompt of the second schematic unit, the operator can ensure that the clamping force on the blank is always maintained within the optimal range during the manufacturing process of the bridge steel mold, and avoid the main plug member retracting beyond the preset range during the blank forging process, resulting in the main plug member completely retreating into the main plug cavity when the clamping member clamps the blank, and causing the end structure to fail to absorb the blank stress, resulting in plastic deformation or even cracks or fractures of the clamping member, thereby ensuring the production and processing quality of the bridge steel mold.

[0039] 3. When the forging of the billet is completed, the billet is further clamped by the electric parallel clamps. When the main plug component is completely retracted into the main plug cavity, the switch moving spring contacts the switch fixed terminal and triggers the first indicator light in the first indicator unit to turn on, reminding the staff to move the billet to the next workstation through the execution module, and during the movement of the billet, the billet can be clamped more stably, reducing the risk of the billet falling off and improving the safety of operation.

[0040] 4. After the forging of the blank is completed and the blank is moved by the execution module, when the switch fixed terminal and the switch movable spring are in contact and trigger the first indicator light to turn on, the connected switch fixed terminal and the switch movable spring are cooled by the insulating driving liquid in the main plug cavity, which can effectively reduce the working temperature of the switch fixed terminal and the switch movable spring in the first indicator unit, avoid overheating of the switch movable spring and the switch fixed terminal in a closed environment during the operation of the first indicator unit, and improve the stability and safety of the operation of the first indicator unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0042] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram of part A.

[0043] Figure 3 For the present invention Figure 1 A partial enlarged schematic diagram of part B.

[0044] Figure 4 It is a side view of the overall structure of the present invention.

[0045] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram of part C in the middle.

[0046] Figure 6 It is a bottom view structural diagram of the execution module in the present invention.

[0047] Figure 7 It is a cross-sectional view of the terminal structure in the present invention.

[0048] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of part D in the middle.

[0049] Fig. 9 For the present invention Figure 7 A partial enlarged schematic diagram of part E in the middle.

[0050] Fig.10 For the present invention Fig. 9 A partial enlarged schematic diagram of part F in the middle.

[0051] Description of the numbers in the figure:

[0052] 10. Forging press;

[0053] 201, longitudinal linear motor; 202, guide slide; 203, transverse linear motor; 204, reduction servo motor; 205, electric telescopic rod;

[0054] 301, electric parallel clamp; 302, insulating end seat; 303, heat-insulating pressure cylinder seat; 304, reverse pressure rod; 305, first indicator light; 306, second indicator light; 307, switch fixed terminal; 308, insulating driving liquid; 309, reciprocating cylinder plug; 310, switch dynamic spring; 311, connecting channel; 312, forcing slide rod; 313, fixed switch terminal; 314, side insulating frame; 315, passive switch spring. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Reference Figures 1 to 7 The embodiment of the present invention provides an automatic clamping device for bridge steel mold production, including a forging machine 10 and an execution module, the execution module includes a clamping member and a driving member for driving the clamping member to move, the clamping member includes an electric parallel clamp 301, and the two movable jaws of the electric parallel clamp 301 are provided with an end structure, the end structure includes an insulating end seat 302 connected to the movable jaw of the electric parallel clamp 301, and the insulating end seat 302 is made of insulating and heat-insulating materials, and the insulating end seat 302 is respectively provided with a main plug cavity, a secondary plug cavity and a connecting channel 311, and the main plug cavity and the secondary plug cavity are connected through the connecting channel 311;

[0059] A main plug component is sealed and slidably inserted in the end opening of the main plug cavity, and the main plug cavity is also filled with an insulating driving liquid 308, which is an insulating cooling liquid. The main plug component includes a V-shaped groove, and an elastically retractable secondary plug component is sealed and slidably inserted in the secondary plug cavity. The outer wall of the insulating end seat 302 is respectively provided with a first schematic unit and a second schematic unit at positions corresponding to the main plug cavity and the V-shaped groove. The first schematic unit includes a switch fixed terminal 307 and a switch spring 310 that are located in the main plug cavity and arranged oppositely, and the switch spring 310 is connected to the main plug component. The second schematic unit includes a forced sliding rod 312 that is slidably inserted on the inner wall of the heat-insulating pressure cylinder seat 303 and whose end extends into the V-shaped groove and is in contact with the inner wall of the V-shaped groove, and a fixed switch terminal 313 connected to the insulating end seat 302, and a spring mechanism is connected to the forced sliding rod 312;

[0060] When the main plug member is completely retracted into the main plug cavity, the switch spring 310 contacts the switch fixed terminal 307 and triggers the first signal unit to open;

[0061] When the main plug member retracts and the V-shaped groove drives the spring mechanism to contact the fixed switch terminal 313, the second signal unit is triggered to open. When the spring mechanism disengages from the V-shaped groove, the spring mechanism disengages from the fixed switch terminal 313.

[0062] When the blank used in the production of bridge steel molds is clamped by the clamping member, the stress generated by the blank during the forging process acts on the terminal structure, driving the main plug component in the terminal structure to undergo elastic retreat. The main plug component continuously squeezes and injects the insulating driving liquid 308 into the secondary plug cavity through the connecting channel 311, thereby driving the elastically retractable secondary plug component to press tightly against the surface of the blank being forged, so that the clamping member can better adapt to the stress of the blank during the forging process through its elastic deformation ability, effectively avoid damage to the clamping device due to stress concentration, and perform additional clamping compensation on the blank, thereby ensuring stable clamping of the blank during the forging process and ensuring the production quality of the bridge steel mold.

[0063] Reference Figure 1 , Figure 2 , Figure 4 and Figure 6 , an embodiment of the present invention provides an automatic clamping device for bridge steel mold production, wherein the driving member includes a longitudinal linear motor 201 and two symmetrically arranged guide slides 202, and the longitudinal linear motor 201 is located between the two guide slides 202;

[0064] Each guide slide 202 is slidably connected to a slide seat, and the movable seat of the guide slide 202 and the two slide seats are commonly connected to a transverse linear motor 203, and the angle between the transverse linear motor 203 and the longitudinal linear motor 201 is 90°;

[0065] The movable seat of the horizontal linear motor 203 is connected to an electric telescopic rod 205, which is preferably a servo electric cylinder. The free end of the electric telescopic rod 205 is connected to a fixed bracket, which is connected to a reduction servo motor 204.

[0066] The fixed end of the electric parallel clamp 301 is rotatably connected to a side of the fixed bracket away from the reduction servo motor 204 through a rotating shaft, and the output shaft of the reduction servo motor 204 is connected to the end of the rotating shaft.

[0067] The position of the clamping member is finely adjusted in the vertical direction by driving the telescopic electric telescopic rod 205 , and the electric parallel clamping jaws 301 in the clamping member are driven to rotate by the reduction servo motor 204 .

[0068] Reference Figure 7, an embodiment of the present invention provides an automatic clamping device for bridge steel mold production, the main plug component includes a heat-insulating pressure cylinder seat 303 that is sealed and slidable in the end opening of the main plug cavity, and a V-shaped groove ring is arranged on the side wall of the heat-insulating pressure cylinder seat 303, and the heat-insulating pressure cylinder seat 303 is made of insulating and heat-insulating materials;

[0069] One end of the heat-insulating pressure cylinder seat 303 extending into the main plug cavity is connected to a first pressure spring, and the other end of the first pressure spring is connected to the end of the main plug cavity.

[0070] Reference Figure 7 and Figure 8 , an embodiment of the present invention provides an automatic clamping device for bridge steel mold production, the first schematic unit also includes a first schematic light 305, and the first schematic light 305 is connected to the side wall of the insulating end seat 302;

[0071] The switch fixed terminal 307 is located inside the main plug cavity, and one end of the switch fixed terminal 307 away from the switch movable spring 310 is connected to the end of the main plug cavity;

[0072] The switch spring 310 is connected to the inner end of the heat-insulating pressure cylinder seat 303;

[0073] The switch spring 310 and the switch fixed terminal 307 are both electrically connected to the first indicator light 305, and when the switch spring 310 moves toward the switch fixed terminal 307 and contacts the end of the switch fixed terminal 307, the first indicator light 305 in the first indicator unit is triggered to turn on;

[0074] When the first pressure spring in the main plug member is in an initial relaxed state, the switch movable spring 310 and the switch fixed terminal 307 are not in contact with each other.

[0075] Reference Figure 7 , Fig. 9 and Fig.10 , the embodiment of the present invention provides an automatic clamping device for bridge steel mold production, the second schematic unit also includes a second schematic light 306 connected to the side wall of the insulating end seat 302;

[0076] The spring mechanism includes a side insulating frame 314 connected to the side wall of the forced sliding rod 312;

[0077] A passive switch spring 315 that cooperates with the fixed switch terminal 313 is connected to the side wall of the side insulating frame 314;

[0078] The side insulating frame 314 is also connected with a return spring;

[0079] The side wall of the insulating end seat 302 is provided with an active cavity connected to the atmosphere, and the side wall of the insulating end seat 302 is also connected to a dustproof net, and the dustproof net blocks the opening at the end of the active cavity;

[0080] One end of the forced sliding rod 312 away from the V-shaped groove penetrates into the movable groove, and the forced sliding rod 312 is slidably connected in the movable groove;

[0081] One end of the return spring away from the side insulating frame 314 is connected to the end of the movable groove;

[0082] The fixed switch terminal 313 is connected to the side wall of the movable groove, and the side wall surface of the fixed switch terminal 313 is flush with the side wall surface of the movable groove;

[0083] The free end of the passive switch spring 315 is in close contact with the side wall surface of the movable groove;

[0084] The passive switch spring 315 and the fixed switch terminal 313 are both electrically connected to the second indicator light 306, and when the passive switch spring 315 moves toward the fixed switch terminal 313 and contacts the fixed switch terminal 313, the second indicator light 306 in the second indicator unit is triggered to turn on;

[0085] During the retraction of the main plug member, the passive switch spring 315 moves toward the fixed switch terminal 313, and when the end of the forced sliding rod 312 close to the V-shaped groove is disengaged from the V-shaped groove, the free end of the passive switch spring 315 is disengaged from the side wall surface of the fixed switch terminal 313;

[0086] When the return spring in the spring mechanism is in an initial relaxed state, the passive switch spring 315 and the fixed switch terminal 313 are not in contact with each other.

[0087] When the blank is clamped between the two end structures in the electric parallel clamp 301, the blank is continuously clamped by the electric parallel clamp 301. When the clamping force of the end structure on the blank is within a preset range, the main plug member continuously retracts elastically into the main plug cavity. After the V-groove drives the spring mechanism to contact the fixed switch terminal 313, the second schematic unit is triggered to open, and after the end of the sliding rod 312 close to the V-groove is forced to disengage from the V-groove, the free end of the passive switch spring 315 is in contact with the fixed switch terminal 313. The side wall surface is disengaged and the second schematic unit is closed. Through the prompt of the second schematic unit, the operator can ensure that the clamping force for the blank is always maintained within the optimal range during the manufacturing process of the bridge steel mold, so as to avoid the main plug component retracting beyond the preset range during the blank forging process, resulting in the main plug component completely retreating into the main plug cavity when the clamping part clamps the blank, and causing the end structure to fail in absorbing the blank stress, resulting in plastic deformation or even cracks or fractures in the clamping part, thereby ensuring the production and processing quality of the bridge steel mold.

[0088] When the forging of the billet is completed, the billet is further clamped by the electric parallel clamp 301. When the main plug component is completely retracted into the main plug cavity, the switch movable spring 310 contacts the switch fixed terminal 307 and triggers the first indicator light 305 in the first indicator unit to turn on, reminding the staff to move the billet to the next workstation through the execution module, and in the process of billet movement, the billet can be clamped more stably, reducing the risk of the billet falling off and improving the safety of operation.

[0089] After the forging of the blank is completed and the blank is moved by the execution module, when the switch fixed terminal 307 and the switch movable spring 310 are in contact and trigger the first indicator light 305 to turn on, the connected switch fixed terminal 307 and the switch movable spring 310 are cooled by the insulating driving liquid 308 located in the main plug cavity, which can effectively reduce the operating temperature of the switch fixed terminal 307 and the switch movable spring 310 in the first indicator unit, avoid overheating of the switch movable spring 310 and the switch fixed terminal 307 in a closed environment during the operation of the first indicator unit, and improve the stability and safety of the operation of the first indicator unit.

[0090] Reference Figure 7 , the embodiment of the present invention provides an automatic clamping device for bridge steel mold production, the auxiliary plug component includes a reciprocating cylinder plug 309 that seals and slides inside the auxiliary plug cavity;

[0091] A reverse pressure rod 304 is slidably inserted into the opening at the end of the reciprocating plug 309, and a second pressure spring is connected to one end of the reverse pressure rod 304 extending into the inner cavity of the reciprocating plug 309. One end of the reverse pressure rod 304 away from the second pressure spring extends out of the auxiliary plug cavity, and one end of the second pressure spring away from the reverse pressure rod 304 is connected to the end of the inner cavity of the reciprocating plug 309.

[0092] The reciprocating barrel plug 309 and the reverse pressure rod 304 are both made of heat-insulating material;

[0093] When the main plug member is completely retracted into the main plug cavity, the reciprocating plug 309 does not extend out of the auxiliary plug cavity.

[0094] When the blank used in the production of bridge steel molds is clamped by the clamping part, the stress generated by the blank during the forging process acts on the terminal structure, driving the main plug component in the terminal structure to undergo elastic retreat. The main plug component continuously squeezes and injects the insulating driving liquid 308 into the secondary plug cavity through the connecting channel 311, thereby driving the secondary plug component to move toward the blank. When the reverse pressure rod 304 contacts the surface of the blank, under the action of the elastic force of the second pressure spring that is continuously squeezed and compressed, the reverse pressure rod 304 is tightly pressed against the surface of the blank being forged, thereby achieving additional clamping compensation for the blank.

[0095] After the forging of the blank is completed and the blank is further clamped by the electric parallel clamp 301, when the main plug component gradually retracts into the main plug cavity, the reverse pressure rod 304 gradually retracts into the reciprocating plug 309, and after the main plug component is completely retracted into the main plug cavity, the reverse pressure rod 304 also completely retracts into the reciprocating plug 309.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic clamping device for bridge steel mold production, characterized in that: The invention comprises a forging machine (10) and an execution module, wherein the execution module comprises a clamping member and a driving member for driving the clamping member to move, wherein the clamping member comprises an electric parallel clamping jaw (301), wherein two movable jaws of the electric parallel clamping jaw (301) are each provided with an end structure, wherein the end structure comprises an insulating end seat (302) connected to the movable jaws of the electric parallel clamping jaw (301), wherein a main plug cavity, a secondary plug cavity and a connecting channel (311) are respectively provided on the insulating end seat (302), and the main plug cavity and the secondary plug cavity are connected via the connecting channel (311); A main plug component is sealed and slidably inserted in the end opening of the main plug cavity, and the main plug cavity is also filled with an insulating driving liquid (308). The main plug component includes a V-shaped groove, and an elastically retractable secondary plug component is sealed and slidably inserted in the secondary plug cavity. The outer wall of the insulating end seat (302) is respectively provided with a first schematic unit and a second schematic unit at positions corresponding to the main plug cavity and the V-shaped groove. The first schematic unit includes a switch fixed terminal (307) and a switch spring (310) located in the main plug cavity and arranged oppositely, and the switch spring (310) is connected to the main plug component. The second schematic unit includes a forced sliding rod (312) slidably inserted on the inner wall of the heat-insulating pressure cylinder seat (303) and the end of which extends into the V-shaped groove and is in contact with the inner wall of the V-shaped groove, and a fixed switch terminal (313) connected to the insulating end seat (302), and a spring mechanism is connected to the forced sliding rod (312); When the main plug member is completely retracted into the main plug cavity, the switch movable spring (310) contacts the switch fixed terminal (307) and triggers the first signal unit to open; When the main plug member retracts and the V-shaped groove drives the spring mechanism to contact the fixed switch terminal (313), the second signal unit is triggered to open, and when the spring mechanism disengages from the V-shaped groove, the spring mechanism disengages from the fixed switch terminal (313).

2. The automatic clamping device for bridge steel mold production according to claim 1 is characterized in that: The main plug component comprises a heat-insulating pressure-applying cylinder seat (303) sealingly sliding in the end opening of the main plug cavity, and the V-shaped groove ring is arranged on the side wall of the heat-insulating pressure-applying cylinder seat (303); A first pressure spring is connected to one end of the heat-insulating pressure cylinder seat (303) extending into the main plug cavity, and the other end of the first pressure spring is connected to the end of the main plug cavity.

3. The automatic clamping device for bridge steel mold production according to claim 2 is characterized in that: The first signal unit also includes a first signal light (305), and the first signal light (305) is connected to the side wall of the insulating end seat (302); The switch fixed terminal (307) is located inside the main plug cavity, and one end of the switch fixed terminal (307) away from the switch movable spring (310) is connected to the end of the main plug cavity; The switch spring (310) is connected to the inner cavity end of the heat-insulating pressure cylinder seat (303).

4. The automatic clamping device for bridge steel mold production according to claim 3 is characterized in that: The switch movable spring (310) and the switch fixed terminal (307) are both electrically connected to the first indicator light (305), and when the switch movable spring (310) moves toward the switch fixed terminal (307) and contacts the end of the switch fixed terminal (307), the first indicator light (305) in the first indicator unit is triggered to turn on.

5. The automatic clamping device for bridge steel mold production according to claim 3 is characterized in that: When the first pressure spring in the main plug component is in an initial relaxed state, the switch movable spring (310) and the switch fixed terminal (307) are not in contact with each other.

6. The automatic clamping device for bridge steel mold production according to claim 2 is characterized in that: The second indicator unit also includes a second indicator light (306) connected to the side wall of the insulating end seat (302); The spring mechanism comprises a side insulating frame (314) connected to the side wall of the forcing slide rod (312); A passive switch spring (315) that cooperates with the fixed switch terminal (313) is connected to the side wall of the side insulating frame (314); The side insulating frame (314) is also connected to a return spring.

7. The automatic clamping device for bridge steel mold production according to claim 6 is characterized in that: The side wall of the insulating end seat (302) is provided with an active cavity connected to the atmosphere, and the side wall of the insulating end seat (302) is also connected to a dustproof net, and the dustproof net blocks the end opening of the active cavity; One end of the forced sliding rod (312) away from the V-shaped groove penetrates into the movable groove, and the forced sliding rod (312) is slidably connected in the movable groove; One end of the return spring away from the side insulating frame (314) is connected to the end of the movable groove; The fixed switch terminal (313) is connected to the side wall of the movable groove, and the side wall surface of the fixed switch terminal (313) is flush with the side wall surface of the movable groove.

8. The automatic clamping device for bridge steel mold production according to claim 6 is characterized in that: The free end of the passive switch spring (315) is in close contact with the side wall surface of the movable groove; The passive switch spring (315) and the fixed switch terminal (313) are both electrically connected to the second indicator light (306), and when the passive switch spring (315) moves toward the fixed switch terminal (313) and contacts the fixed switch terminal (313), the second indicator light (306) in the second indicator unit is triggered to turn on; During the retraction of the main plug member, the passive switch spring (315) moves toward the fixed switch terminal (313), and when the end of the forcing slide bar (312) close to the V-shaped groove is separated from the V-shaped groove, the free end of the passive switch spring (315) is separated from the side wall surface of the fixed switch terminal (313); When the return spring in the spring mechanism is in an initial relaxed state, the passive switch spring (315) and the fixed switch terminal (313) are not in contact with each other.

9. The automatic clamping device for bridge steel mold production according to claim 2 is characterized in that: The auxiliary plug component comprises a reciprocating plug (309) sealingly sliding inside the auxiliary plug cavity; A reverse pressure rod (304) is slidably inserted into the opening at the end of the reciprocating plug (309), and a second pressure spring is connected to one end of the reverse pressure rod (304) extending into the inner cavity of the reciprocating plug (309), and one end of the reverse pressure rod (304) away from the second pressure spring extends out of the auxiliary plug cavity, and one end of the second pressure spring away from the reverse pressure rod (304) is connected to the end of the inner cavity of the reciprocating plug (309); When the main plug member is completely retracted into the main plug cavity, the reciprocating plug (309) does not extend out of the auxiliary plug cavity.

10. The automatic clamping device for bridge steel mold production according to claim 1 is characterized in that: The driving member comprises a longitudinal linear motor (201) and two symmetrically arranged guide slides (202), and the longitudinal linear motor (201) is located between the two guide slides (202); Each of the guide slides (202) is slidably connected to a slide seat, and a mover seat of the guide slide (202) and the two slide seats are commonly connected to a transverse linear motor (203), and the included angle between the transverse linear motor (203) and the longitudinal linear motor (201) is 90°; The mover seat of the transverse linear motor (203) is connected to an electric telescopic rod (205), the free end of the electric telescopic rod (205) is connected to a fixed bracket, and the fixed bracket is connected to a reduction servo motor (204); The fixed end of the electric parallel clamp (301) is rotatably connected to a side of the fixed bracket away from the reduction servo motor (204) via a rotating shaft, and the output shaft of the reduction servo motor (204) is connected to the end of the rotating shaft.

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