Crank arm forming die

Abstract

The utility model relates to the technical field of crank arm forming machining devices, in particular to a crank arm forming die. The device comprises a bottom frame, a lower mold, a fixing frame and a driving assembly, and a placing plate is rotationally arranged on the bottom frame; the lower die is arranged at the top end of the placing plate and comprises a lower die body part, a plurality of fixing rod parts arranged at the top end of the lower die body part and a discharging cone arranged on the lower die body part; the lower die body part is provided with a plurality of lower guide grooves and lower die grooves which are annularly distributed and communicated with one another; and the driving assembly is detachably arranged on the multiple fixing rod parts and is in driving connection with the upper mold. According to the utility model, the upper die is conveniently detached from the lower die so as to ensure the reuse times of the die, the use cost of the crank arm is ensured, the secondary processing position of the die is fixed through the plurality of lower guide grooves and the lower die grooves which are annularly distributed, and the points needing secondary grinding processing are small, so that the production efficiency is improved, and the production cost is reduced. Therefore, the production time of the crank arm is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crank arm forming processing device technical field, especially to a crank arm forming die. BACKGROUND

[0002] The hydraulic truck is a mechanical device which is used to lift and lower the pallet goods by driving the hydraulic system by manpower when the fork carried by the hydraulic truck is inserted into the pallet hole.

[0003] The Chinese patent with publication number CN217666166U discloses a crank arm forming forging die, which comprises a forging die body, a crank arm pouring groove is formed in the top of the forging die body, a quick cooling mechanism is arranged on the left side of the forging die body, and a uniform material mechanism is arranged at the bottom of the forging die body.

[0004] However, the above technical solution has the following disadvantages: when the crank arm is poured and formed through the die, the die is only a single-sided die, and the forging die body needs to be selected between one-time use or a large opening, which results in high production cost and long production time of the crank arm. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems in the background art and provides a crank arm forming die which can guarantee the reuse frequency of the die by detachably connecting the upper die from the lower die and fix the position of the die for secondary processing through the multiple lower material guide grooves and lower die grooves distributed along the ring shape, so as to reduce the production time and cost of the crank arm.

[0006] The utility model discloses a technical scheme, a crank arm forming die, include: the bottom frame is set up with the placement board on rotation, the lower mould is set up at the top of placement board, and the lower mould includes lower mould body part, sets up a plurality of fixed rod parts at the top of lower mould body part and sets up the discharge cone on the lower mould body part, and the lower mould body part has a plurality of lower material guide grooves and lower die grooves along annular distribution and intercommunication, the fixed frame is detachably set up on a plurality of fixed rod parts, and the fixed frame is slidably provided with the upper mould, and the upper mould has a blanking hole and a plurality of upper material guide grooves and upper die grooves along annular distribution, and the blanking hole is communicated with a plurality of upper material guide grooves and upper die grooves, and the drive assembly is detachably set up on a plurality of fixed rod parts, and the drive assembly is drivenly connected with the upper mould.

[0007] Preferably, the plurality of lower material guide grooves and lower die grooves are distributed one-to-one corresponding to the plurality of upper material guide grooves and the plurality of upper die grooves, and the bottom end faces of the plurality of lower material guide grooves are each inclined downward one-to-one corresponding to the plurality of lower die grooves.

[0008] Preferably, the upper mould is provided with a plugging column, the top end of the plugging column has a handle portion, and the bottom end of the plugging column is detachably provided with a sealing washer.

[0009] Preferably, the bottom frame is further provided with a motor, the bottom frame is further rotatably provided with a drive rod, the motor is drivingly connected with the drive rod, and the drive rod is provided with a plurality of eccentric wheels.

[0010] Preferably, the drive assembly includes a support frame provided on each of the plurality of fixed rod parts, a drive disc provided on the plurality of support frames, a plurality of hydraulic cylinders provided on the drive disc, a draw hook provided on the output end of each of the plurality of hydraulic cylinders, and a plurality of demolding rods provided annularly at the bottom end of the drive disc.

[0011] Preferably, the lower mould is provided with a copper pipe, and the copper pipe is respectively communicated with a cooling mechanism and a waste heat recovery mechanism at both ends.

[0012] Compared with the prior art, the utility model has the following beneficial technical effects:

[0013] The user pours the metal liquid into the upper mould and the lower mould through the blanking hole, the metal liquid flows between the plurality of upper material guide grooves and the plurality of lower material guide grooves under the action of its own weight, flows between the upper die groove and the lower die groove, and after forming on the outer surface of the crank arm, the user pulls the upper mould upward through the drive assembly, then increases the contact area of the crank arm with the external air, increases the cooling speed of the crank arm, and the cooling assembly inputs the liquid into the copper pipe for heat exchange with the crank arm, the heated liquid flows to the waste heat recovery assembly for recovery, and the energy utilization rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 The structure of the utility model embodiment is shown in the figure;

[0015] Fig. 2 It is a local schematic view of the embodiment of the utility model;

[0016] Fig. 3 It is a structural schematic view of the upper die, the lower die and the driving assembly in the embodiment of the utility model.

[0017] Reference signs: 1, chassis; limiting rod; 9, elastic piece; 10, lower die; 101, lower die body part; 1011, lower material guide groove; 1012, lower die groove; 102, material discharging cone; 103, fixed rod part; 11, copper pipe; 12, fixing frame; 13, upper die; 14, driving disc; 15, hydraulic cylinder; 16, plugging column; 17, sealing washer; 18, demolding rod; 19, support frame; 20, bolt; 21, top ring. Specific implementation

[0018] Embodiment one

[0019] As Figs. 1-3 shown, the crank arm forming die provided by the embodiment comprises a chassis 1, a lower die 10, a fixing frame 12 and a driving assembly, the chassis 1 is rotationally provided with a placing plate 7; the lower die 10 is arranged at the top end of the placing plate 7, the lower die 10 comprises a lower die body part 101, a plurality of fixed rod parts 103 arranged at the top end of the lower die body part 101, and a material discharging cone 102 arranged on the lower die body part 101; the lower die body part 101 has a plurality of lower material guide grooves 1011 and lower die grooves 1012 which are distributed in a ring shape and are interconnected.

[0020] The fixing frame 12 is detachably arranged on the plurality of fixed rod parts 103, the fixing frame 12 is slidingly provided with an upper die 13, the upper die 13 has a discharging hole, and a plurality of upper material guide grooves and upper die grooves which are distributed in a ring shape; the discharging hole is communicated with the plurality of upper material guide grooves and upper die grooves.

[0021] The driving assembly is detachably arranged on the plurality of fixed rod parts 103, and the driving assembly is drivingly connected with the upper die 13. The lower die 10 is provided with a copper pipe 11, and the copper pipe 11 is respectively communicated with a cooling mechanism and a waste heat recovery mechanism at both ends.

[0022] When the embodiment is used, the user pours the metal liquid into the upper die 13 and the lower die 10 through the discharging hole, the metal liquid passes through the plurality of upper material guide grooves and the lower material guide grooves 1011 under the action of its own weight, flows into the upper die grooves and the lower die grooves 1012, and is formed on the outer surface of the crank arm after forming, then the user pulls the upper die to move upward through the driving assembly, the contact area of the crank arm with the external air is increased, the cooling speed of the crank arm is increased, and the cooling assembly inputs the liquid into the copper pipe 11 to exchange heat with the crank arm, the heated liquid flows to the waste heat recovery assembly for recovery, and the energy utilization rate is improved.

[0023] Embodiment Two

[0024] As shown in Fig. 1 and Fig. 3 The crank arm forming die proposed in this embodiment is compared with the first embodiment. In this embodiment, the plurality of lower material guide grooves 1011 and the lower die grooves 1012 are distributed one-to-one with the plurality of upper material guide grooves and the plurality of upper die grooves. The bottom end faces of the plurality of lower material guide grooves 1011 are each gradually inclined downward toward the plurality of lower die grooves 1012. The upper die 13 is provided with a plugging column 16. The top end of the plugging column 16 has a handle part. The bottom end of the plugging column 16 is detachably provided with a sealing washer 17. The plugging column 16 is located at the lower hole to reduce the contact of the upper die 13 and the lower die 10 with the external environment when the crank arm is not produced, thereby improving the service life of the upper die 13 and the lower die 10.

[0025] When the embodiment is used, the gradual downward inclination of the lower material guide grooves 1011 can make the metal liquid flow into the lower die grooves 1012 under the action of its own weight, and make the air in the lower die grooves 1012 and the upper die grooves flow out of the upper die under heating, thereby avoiding air bubbles on the formed crank arm.

[0026] Embodiment Three

[0027] As shown in Figs. 1-3 The crank arm forming die proposed in this embodiment is compared with the first embodiment. In this embodiment, the bottom frame 1 is further provided with a motor 2. The bottom frame 1 is further rotatably provided with a driving rod 3. The motor 2 is drivingly connected with the driving rod 3. The driving rod 3 is provided with a plurality of eccentric wheels 4. The bottom frame 1 and the placement plate 7 are further provided with a plurality of elastic members 9. The plurality of elastic members 9 can automatically reset the mold after moving. The placement plate 7 is further provided with a limiting rod 8. The limiting rod 8 is slidingly connected with the bottom frame 1. The limiting rod 8 can avoid the placement plate 7 from rotating too large, causing the liquid in the mold to spill out.

[0028] The driving assembly includes a plurality of support frames 19 each provided on the plurality of fixed rod portions 103, a driving disc 14 provided on the plurality of support frames 19, a plurality of hydraulic cylinders 15 provided on the driving disc 14, a plurality of pull hooks each provided on the output end of the plurality of hydraulic cylinders 15, and a plurality of demolding rods 18 provided in a ring shape at the bottom end of the driving disc 14. The upper die 13 is further provided with a top ring 21. The pull hooks are detachably connected with the top ring 21.

[0029] In use, the motor 2 drives the driving rod 3 to drive the plurality of eccentric wheels 4 to rollingly contact the placing plate 7 in turn, so as to shake the metal liquid in the plate, avoid liquid not flowing to the position, and then when the arm pours, the hydraulic cylinder 15 drives the pull hook to hook the top ring 21 to drive the upper die 13 to move up and down, so as to reduce the time of close contact between workers and metal liquid, so as to protect the safety of users.

[0030] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to this, and various changes can be made within the knowledge range of the technical personnel in the technical field without departing from the purpose of the utility model.

Claims

1. A toggle arm forming die characterized by, The utility model relates to a kind of moulding machine, including: Chassis (1), which is rotatably provided with a placing plate (7) on it; Lower die (10) is provided at the top end of the placing plate (7), and the lower die (10) includes a lower die body portion (101), a plurality of fixed rod portions (103) provided at the top end of the lower die body portion (101), and a discharge cone (102) provided on the lower die body portion (101). The lower die body portion (101) has a plurality of lower guide grooves (1011) and lower die grooves (1012) distributed in a ring shape and interconnected with each other. A fixed frame (12) is detachably provided on the plurality of fixed rod portions (103), and the fixed frame (12) is slidably provided with an upper die (13). The upper die (13) has a discharge hole, a plurality of upper guide grooves and upper die grooves distributed in a ring shape, and the discharge hole is in communication with the plurality of upper guide grooves and upper die grooves. A drive assembly is detachably provided on the plurality of fixed rod portions (103), and the drive assembly is drivingly connected with the upper die (13).

2. A toggle arm forming die according to claim 1, wherein The plurality of lower guide grooves (1011) and lower die grooves (1012) are distributed one-to-one with the plurality of upper guide grooves and the plurality of upper die grooves, and the bottom end surfaces of the plurality of lower guide grooves (1011) are gradually inclined downward one-to-one toward the plurality of lower die grooves (1012).

3. A toggle arm forming die according to claim 2, wherein The upper die (13) is provided with a plug column (16) having a handle portion at the top end, and the bottom end of the plug column (16) is detachably provided with a sealing washer (17).

4. The swab arm forming die of claim 1, wherein, The chassis (1) is further provided with a motor (2) and a driving rod (3) rotatably provided thereon. The motor (2) is drivingly connected with the driving rod (3), and the driving rod (3) is provided with a plurality of eccentric wheels (4).

5. A toggle arm forming die according to claim 4, wherein The drive assembly includes a plurality of support frames (19) each provided on the plurality of fixed rod portions (103), a drive disc (14) provided on the plurality of support frames (19), a plurality of hydraulic cylinders (15) provided on the drive disc (14), a plurality of draw hooks each provided at the output end of the plurality of hydraulic cylinders (15), and a plurality of demolding rods (18) provided in a ring shape at the bottom end of the drive disc (14).

6. A toggle arm forming die according to claim 4, wherein The lower die (10) is provided with a copper pipe (11), and the two ends of the copper pipe (11) are respectively connected with a cooling mechanism and a waste heat recovery mechanism.

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