CN213079936U - Valve cover reverse extrusion die structure - Google Patents

Abstract

The utility model discloses a valve gap backward extrusion mould structure, include: the base the upper end of base is provided with the rolling disc through the pivot rotation be provided with driven gear in the pivot the upper end one side of base is provided with servo gear motor be provided with the driving gear with driven gear intermeshing on servo gear motor's the motor shaft the upper end of rolling disc evenly is provided with three die carrier down along the circumferencial direction the upper end of die carrier is provided with the location die sleeve down from up having set gradually pressure piece and die down in the location die sleeve the upper end of die is provided with the uide bushing be provided with the mold core in the die be provided with the valve gap in the mold core the gliding material pole that is provided with in the pressure piece, the upper end and the valve gap of material pole are mutually supported.

Description

Valve cover reverse extrusion die structure

Technical Field

The utility model relates to a mould especially relates to a valve gap is anti-crowded mould structure.

Background

In the oil extraction function, the gate valve is very important as a part for realizing the on-off and flow control of a pipeline system, and the valve cover is an important part for connecting the valve body and the valve rod (valve rod hand wheel) in the gate valve. The traditional valve cover processing mode adopts a machining mode for production, and the processing is time-consuming and labor-consuming, so that the processing cost is high and is gradually replaced by a valve cover reverse extrusion die. At present, the feeding, the backward extrusion and the blanking of the valve cover backward extrusion die are all carried out on the same die, the processing time is long, the working efficiency is low, meanwhile, the existing valve cover backward extrusion die adopts a lower part material returning mode (namely, the valve cover formed by upwards ejecting a material returning rod in a lower die frame), sometimes, the valve cover is adhered to the material returning rod and a punch at the same time after the backward extrusion forming, and the valve cover is easily stretched due to the direct material returning, so that the quality of the valve cover is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the valve cover reverse extrusion die structure is high in working efficiency.

In order to solve the technical problem, the utility model discloses a technical scheme is: valve gap backward extrusion mould structure includes: the material discharging device comprises a base, a rotating disc is arranged at the upper end of the base in a rotating mode through a rotating shaft, a driven gear is arranged on the rotating shaft, a servo speed reducing motor is arranged on one side of the upper end of the base, a driving gear meshed with the driven gear is arranged on a motor shaft of the servo speed reducing motor, three lower die frames are uniformly arranged at the upper end of the rotating disc in the circumferential direction, a positioning die sleeve is arranged at the upper end of each lower die frame, a pressure block and a female die are sequentially arranged in the positioning die sleeve from bottom to top, a guide sleeve is arranged at the upper end of the female die, a die core is arranged in the female die, a valve cover is arranged in the die core, a material discharging rod is arranged in the pressure block in a sliding mode, the upper end of the material discharging rod is matched with the valve cover, the lower end of the material discharging rod is connected with a, the rotary disc is provided with a frame, the frame at the upper end of one lower frame is provided with an upper hydraulic cylinder, the lower end of a lower hydraulic rod of the upper hydraulic cylinder is provided with an upper die frame, the lower end of the upper die frame is provided with a punch sleeve in sliding fit with a guide sleeve, a punch matched with a valve cover is arranged in the punch sleeve, the lower end of the punch is sequentially provided with a conical cavity communicated with the outside, a mandril sliding cavity communicated with the conical cavity and a piston limiting cavity communicated with the mandril sliding cavity from bottom to bottom, the conical cavity is internally provided with a conical ejector block matched with the conical cavity, the mandril matched with the mandril sliding cavity is arranged in the mandril sliding cavity in a sliding way, a piston matched with the piston limiting cavity is arranged in the piston limiting cavity in a sliding way, the lower end of the mandril is connected with the conical ejector block, and the upper end of the mandril is connected, the device comprises an ejector rod, a piston, a plunger die frame, a plunger rod sliding cavity, a plunger piston, a plunger rod, a plunger piston limiting cavity, a return spring, a plunger chip, an air inlet channel and an air compressor, wherein the return spring is arranged in the plunger piston limiting cavity between the ejector rod sliding cavity and the plunger piston, the lower end of the return spring is abutted against the plunger chip, the upper end of the plunger piston limiting cavity is internally provided.

The utility model has the advantages that: above-mentioned valve gap is anti-extrudees mould structure, novel structure, adopt three lower mould frame can freely rotate on the rolling disc and cooperate the use with single last mould frame, utilize one of them lower mould frame to carry out the valve gap of valve gap upset extruded time on other two lower mould frames and carry out material loading and unloading, the process gap is short, high work efficiency, and simultaneously, increase on the drift and can prevent the valve gap adhesion after the upset at the in-process that the drift resets with automatic ejector pin structure, the material returned is effectual, prevent effectively that the valve gap is stretched by the drift, the quality of valve gap is protected.

Drawings

Fig. 1 is the structure schematic diagram of the valve cover reverse extrusion die structure of the utility model.

Fig. 2 is a schematic top view of the arrangement of the lower mold frame on the rotary disk in fig. 1.

Fig. 3 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1. the device comprises a base, 2, a rotating shaft, 3, a rotating disc, 4, a driven gear, 5, a servo speed reduction motor, 6, a motor shaft, 7, a driving gear, 8, a lower die frame, 9, a positioning die sleeve, 10, a pressure block, 11, a female die, 12, a guide sleeve, 13, a die core, 14, a valve cover, 15, a material returning rod, 16, a lower hydraulic cylinder, 17, a lower hydraulic rod, 18, a frame, 19, an upper hydraulic cylinder, 20, a lower hydraulic rod, 21, an upper die frame, 22, a punch sleeve, 23, a punch, 24, a conical cavity, 25, a push rod sliding cavity, 26, a piston limiting cavity, 27, a conical push block, 28, a push rod, 29, a piston, 30, a reset spring, 31, an air inlet channel, 32, an air compressor, 33 and an air inlet pipe.

Detailed Description

The following detailed description of the present invention will be made in conjunction with the accompanying drawings and specific embodiments.

As shown in fig. 1, 2 and 3, the valve cover backward extrusion die structure includes: the die comprises a base 1, a rotating disc 3 is rotatably arranged at the upper end of the base 1 through a rotating shaft 2, a driven gear 4 is arranged on the rotating shaft 2, a servo speed reduction motor 5 is arranged on one side of the upper end of the base 1, a driving gear 7 meshed with the driven gear 4 is arranged on a motor shaft 6 of the servo speed reduction motor 5, three lower die frames 8 are uniformly arranged at the upper end of the rotating disc 3 along the circumferential direction, a positioning die sleeve 9 is arranged at the upper end of the lower die frames 8, a pressure block 10 and a female die 11 are sequentially arranged in the positioning die sleeve 9 from bottom to top, a guide sleeve 12 is arranged at the upper end of the female die 11, a die core 13 is arranged in the female die 11, a valve cover 14 is arranged in the die core 13, a material returning rod 15 is arranged in the pressure block 10 in a sliding manner, the upper end of the material returning rod 15 is matched with the valve cover 14, and the lower end of the material returning rod 15 is, the lower hydraulic cylinder 16 is arranged in the rotating disc 3, a frame 18 is arranged on the rotating disc 3, an upper hydraulic cylinder 19 is arranged on the frame 18 at the upper end of one lower die carrier 8, an upper die carrier 21 is arranged at the lower end of a lower hydraulic rod 20 of the upper hydraulic cylinder 19, a punch sleeve 22 in sliding fit with the guide sleeve 12 is arranged at the lower end of the upper die carrier 21, a punch 23 in mutual fit with the valve cover 14 is arranged in the punch sleeve 22, a conical cavity 24 in mutual communication with the outside, a push rod sliding cavity 25 in mutual communication with the conical cavity 24 and a piston limiting cavity 26 in mutual communication with the push rod sliding cavity 25 are sequentially arranged at the lower end of the punch 23 from bottom to bottom, a conical push block 27 in mutual fit with the conical cavity 24 is arranged in the conical cavity 24, a push rod 28 in mutual fit with the push rod sliding cavity 25 is arranged in a sliding manner, and a piston 29 in mutual fit with the piston limiting cavity 26 is arranged in a sliding manner, the lower end of the ejector rod 28 is connected with the conical ejector block 27, the upper end of the ejector rod 28 is connected with the piston 29, a return spring 30 is arranged in a piston limiting cavity 26 between the ejector rod sliding cavity 25 and the piston 29, the lower end of the return spring 30 abuts against the punch 23, the upper end of the return spring 30 abuts against the piston 29, an air inlet channel 31 communicated with the punch 23 is arranged in the punch 23 at the upper end of the piston limiting cavity 26, an air compressor 32 is arranged on the upper die frame 21, and the air compressor 32 is connected with the air inlet channel 31 through an air inlet pipe 33.

When the valve cover backward extrusion die structure is used, a first valve cover 14 to be upset is placed into a die core 13 on a left lower die frame 8, a servo speed reduction motor 5 is started, a motor shaft 6 of the servo speed reduction motor 5 drives a driving gear 7 to rotate, the driving gear 7 drives a driven gear 4 meshed with the driving gear to rotate, the driven gear 4 drives a rotating shaft 2 to rotate 120 degrees clockwise, at the moment, a lower die frame 8 provided with the first valve cover 14 to be upset rotates to the position right below an upper die frame 21, an upper hydraulic cylinder 19 is started, an upper hydraulic rod 20 of the upper hydraulic cylinder 19 pushes the upper die frame 21 downwards, the upper die frame 21 drives a punch head sleeve 22 and a punch head 23 to downwards move and extend into a guide sleeve 12 and a female die 11 to upset and extrude the first valve cover 14 to be upset, after extrusion is completed, an air compressor 32 is started, and the air compressor 32 sends compressed air into a piston limit cavity 26 through an air inlet pipe 33 and an air inlet channel 31, thereby pushing the piston 29 to move downwards, the piston 29 pushing the ejector rod 28 and the conical ejector block 27 to move downwards and extruding the return spring 30, the upper die carrier 21 resetting, the conical ejector block 27 pushing the first upset valve cover 14 to separate from the punch 23, after the upper die carrier 21 resetting, the air compressor 32 stopping working, the return spring 30 resetting, continuing to start the servo reducing motor 5, the motor shaft 6 of the servo reducing motor 5 driving the driving gear 7 to rotate, the driving gear 7 driving the driven gear 4 engaged with the driving gear to rotate, the driven gear 4 driving the rotating shaft 2 to rotate 120 degrees clockwise for the second time, at this time, utilizing the middle lower die carrier 8 to carry out upsetting extrusion time on the valve cover 14, simultaneously carrying out loading on the valve cover 14 on the left lower die carrier 8 and carrying out blanking on the valve cover 14 on the right lower die carrier 8, during blanking, the lower hydraulic rod 17 of the lower hydraulic cylinder 16 pushing the stripper rod 15 to slide upwards in the pressure, the material returning rod 15 pushes the upset valve cover 14 to move upwards for demoulding.

Above-mentioned valve gap is anti-extrudees mould structure, novel structure, adopt three lower mould frame can freely rotate on the rolling disc and cooperate the use with single last mould frame, utilize one of them lower mould frame to carry out the valve gap of valve gap upset extruded time on other two lower mould frames and carry out material loading and unloading, the process gap is short, high work efficiency, and simultaneously, increase on the drift and can prevent the valve gap adhesion after the upset at the in-process that the drift resets with automatic ejector pin structure, the material returned is effectual, prevent effectively that the valve gap is stretched by the drift, the quality of valve gap is protected.

Claims (1)

1. Valve gap backward extrusion mould structure, its characterized in that: the method comprises the following steps: the die comprises a base (1), a rotating disc (3) is rotatably arranged at the upper end of the base (1) through a rotating shaft (2), a driven gear (4) is arranged on the rotating shaft (2), a servo speed reduction motor (5) is arranged on one side of the upper end of the base (1), a driving gear (7) meshed with the driven gear (4) is arranged on a motor shaft (6) of the servo speed reduction motor (5), three lower die frames (8) are uniformly arranged at the upper end of the rotating disc (3) along the circumferential direction, a positioning die sleeve (9) is arranged at the upper end of each lower die frame (8), a pressure block (10) and a concave die (11) are sequentially arranged in the positioning die sleeve (9) from bottom to top, a guide sleeve (12) is arranged at the upper end of the concave die (11), a die core (13) is arranged in the concave die (11), and a valve cover (14) is arranged in the die core (, the material returning device is characterized in that a material returning rod (15) is arranged in the pressure block (10) in a sliding mode, the upper end of the material returning rod (15) is matched with a valve cover (14), the lower end of the material returning rod (15) is connected with a lower hydraulic rod (17) of a lower hydraulic cylinder (16), the lower hydraulic cylinder (16) is arranged in a rotating disc (3), a rack (18) is arranged on the rotating disc (3), an upper hydraulic cylinder (19) is arranged on the rack (18) at the upper end of one lower die carrier (8), an upper die carrier (21) is arranged at the lower end of a lower hydraulic rod (20) of the upper hydraulic cylinder (19), a punch head sleeve (22) in sliding fit with a guide sleeve (12) is arranged at the lower end of the upper die carrier (21), a punch head (23) matched with the valve cover (14) is arranged in the punch head sleeve (22), and a conical cavity (24) and a valve cover (14) which are communicated with the outside are sequentially arranged at the lower end of the punch head, The device comprises a push rod sliding cavity (25) communicated with a conical cavity (24) and a piston limiting cavity (26) communicated with the push rod sliding cavity (25), wherein a conical top block (27) matched with the conical cavity (24) is arranged in the conical cavity (24), a push rod (28) matched with the push rod sliding cavity (25) is arranged in the push rod sliding cavity (25) in a sliding manner, a piston (29) matched with the piston limiting cavity (26) is arranged in the piston limiting cavity (26) in a sliding manner, the lower end of the push rod (28) is connected with the conical top block (27), the upper end of the push rod (28) is connected with the piston (29), a return spring (30) is arranged in the piston limiting cavity (26) between the push rod sliding cavity (25) and the piston (29), the lower end of the return spring (30) is abutted against a punch (23), the upper end of the return spring (30) is abutted against the piston (29), and an air inlet channel (31) communicated with the piston limiting cavity (23) is arranged in the upper end of the The upper die carrier (21) is provided with an air compressor (32), and the air compressor (32) is connected with an air inlet channel (31) through an air inlet pipe (33).

Images