CN210816921U

CN210816921U - Rod blank stretching forging machine

Info

Publication number: CN210816921U
Application number: CN201921688273.4U
Authority: CN
Inventors: 苏超; 熊佳乐; 丁子浩; 曾缘园; 葛李龙
Original assignee: Hunan Jingzhuan Automation Technology Co ltd
Current assignee: Hunan Jingzhuan Automation Technology Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-06-23
Anticipated expiration: 2029-10-10

Abstract

The utility model belongs to the technical field of hardware and tools makes, concretely relates to rod class blank stretch forging machine, including table surface, last heating device and the clamping device of being equipped with of table surface, clamping device includes fixed part and removal portion, and fixed part and removal portion do not include the mounting fixture and the removal anchor clamps of two relative settings. The fixed clamp and the movable clamp are matched with and clamp two ends of the raw material rod through the opening and closing device. The moving part is connected with a driving device, and the driving device drives the moving part to do linear reciprocating motion along the central axis direction of the raw material rod. The utility model discloses simple structure, convenient operation heats the raw material rod through heating device, through the raw material rod both ends after the tight heating of clamping device, the fixed part is fixed raw material rod one end, and moving part passes through the drive arrangement drive, is reciprocating motion in baffle and fixed plate, realizes pressing from both sides tight, tensile, the process of unloading to raw material rod, and degree of automation is high, labour saving and time saving, and system base in-process potential safety hazard is little, and production efficiency is high.

Description

Rod blank stretching forging machine

Technical Field

The utility model belongs to the technical field of hardware and tools makes, especially, relate to a rod class blank stretch forging machine.

Background

The rod type hardware tools are general names of hardware tools, the appearance structures of the hardware tools are similar to those of the rod type hardware tools, most of the hardware tools work through special structures arranged at two ends, and a middle handheld part is slender, such as a single-end wrench, a double-end wrench, a solid wrench, a double offset ring spanner and the like.

For mature hardware tools, the price is low, how to improve the processing technology, improve the product quality and reduce the processing cost are important targets of all processing manufacturers, and how to realize efficient blank making in the processing of rod hardware tools is a necessary guarantee for efficient production.

The existing rod hardware tool manufacturing process is mostly made of round steel serving as a raw material through round steel blanking, pier nose heating, blank forging, mechanical cutting and grinding, and is various in process and low in work efficiency. The forging of the blank is the heavy of the whole process, the forging is not good, the consumption of raw materials is large, and the energy consumption is high.

The existing blank forging method is mainly characterized in that workers carry out manual forging through an air hammer and a hydraulic hammer, the automation degree is low, time and labor are wasted, in the forging process, the noise is high, the danger coefficient is high, and the production efficiency is low.

A small part of the raw materials are elongated to form blanks by matching the hydraulic press and the dies, but one set of dies can only manufacture one product. If a plurality of products are produced, a plurality of sets of dies need to be manufactured, and each set of die needs a hydraulic press matched with the die, so that the occupied area is large, and the production cost is high; if a plurality of sets of dies use one hydraulic press, the dies need to be frequently replaced, time and labor are wasted, the production efficiency is low, and the hydraulic press is not suitable for popularization and application.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of providing a blank making machine; in particular to a rod blank stretching and forging machine with simple structure, high automation degree, small occupied area, wide application range, low cost and high efficiency.

In order to solve the technical problem, the utility model discloses a technical scheme be: a bar blank stretching forging machine, which comprises a worktable, wherein a heating device is arranged on the worktable, the heating device heats the raw material rod and then sends the raw material rod into the clamping device, the clamping device comprises a fixed part and a movable part, the fixed part comprises a first clamp and a second clamp, the movable part comprises a third clamp and a fourth clamp, the second clamp is connected with the working table through a first opening and closing device, the third clamp is connected with the working table through a second opening and closing device, the first clamp and the second clamp are matched with each other through the first opening and closing device to clamp one end of the raw material rod, the third clamp and the fourth clamp are matched with each other through the second opening and closing device to clamp the other end of the raw material rod, the moving part is connected with a driving device, and the driving device drives the moving part to do linear reciprocating motion along the central axis direction of the raw material rod.

Furthermore, a shaping mold is arranged on the clamping device and comprises a first shaping mold and a second shaping mold, the first shaping mold and the second shaping mold are respectively arranged in a set, and the first shaping mold and the second shaping mold are respectively used for clamping and shaping two ends of the raw material rod.

Further, the first fixed die comprises a first fixed die and a first movable die, the first fixed die is arranged on the first clamp, the first movable die is arranged on the second clamp, the second fixed die comprises a second fixed die and a second movable die, the second fixed die is arranged on the fourth clamp, and the second movable die is arranged on the third clamp.

Furthermore, a travel switch is arranged on the working table surface and controls the reciprocating distance of the driving device.

Furthermore, a transmission device is arranged on the working table surface, and the transmission device transmits the raw material rod into the clamping device through the heating device.

Furthermore, a lifting device is arranged at the bottom of the clamping device and assists in clamping the raw material rod.

Further, a fixed plate and a movable plate are arranged on the workbench surface, the fixed plate and the movable plate are arranged in parallel, the fixed plate and the movable plate are perpendicular to the workbench surface respectively, the heating device is connected to one side of the fixed plate, a fixed portion is arranged on the other side of the fixed plate, a movable portion is arranged on one side of the movable plate, the driving device is connected to the other side of the movable plate, and the fixed portion and the movable portion are arranged between the fixed plate and the movable plate relatively.

Further, the first opening and closing device and the second opening and closing device have the same structure, the first opening and closing device comprises a first connecting plate, the cross section of the first connecting plate is L-shaped, the longitudinal section of the first connecting plate is U-shaped, the second clamp is arranged in a U-shaped groove of the first connecting plate, the fixed plate is arranged in the L-shaped groove of the first connecting plate, a connecting hole is formed in the end part of one side of the first connecting plate, which is parallel to the fixed plate, perpendicular to the fixed plate, of the first connecting plate, a first telescopic rod is arranged on one side of the first connecting plate, a connecting through hole is formed in the intersection of one end, close to the first clamp, of the second clamp and one end, close to the fixed plate, of the second clamp, the connecting hole is connected with the connecting through hole through a rotating shaft, one end, far away from the first clamp, of the second clamp is connected with the first telescopic rod, and the first telescopic rod and the,

in a first state, the first telescopic rod is contracted, the second clamp rotates along the rotating shaft in the direction away from the first clamp, the gap between the first clamp and the second clamp is increased, and the gap is larger than the diameter of the raw material rod;

in a second state, the first telescopic rod extends, the second clamp rotates along the direction that the rotating shaft is close to the first clamp, the gap between the first clamp and the second clamp is reduced, and the gap is smaller than the diameter of the raw material rod.

Furthermore, a baffle is vertically arranged on the working table surface, the baffle is parallel to the fixed plate and the movable plate respectively, the baffle is arranged between the movable plate and the driving device, and the movable plate is arranged between the fixed plate and the baffle.

Further, a guide post is arranged between the fixed plate and the baffle plate, the guide post penetrates through the movable plate, the movable plate is connected with the driving device, and the driving device penetrates through the baffle plate.

The utility model has the advantages and positive effects that:

1. the utility model discloses simple structure, convenient operation heats the raw material rod through heating device, through the raw material rod both ends after the tight heating of clamping device, the fixed part is fixed raw material rod one end, and moving part passes through the drive arrangement drive, is reciprocating motion in baffle and fixed plate, realizes pressing from both sides tight, tensile, the process of unloading to raw material rod, and degree of automation is high, labour saving and time saving, and system base in-process potential safety hazard is little, and production efficiency is high.

2. The utility model discloses a set up design mould on clamping device, can carry out tensile while to the raw material stick, stereotype to the raw material stick both ends, can stereotype both ends, also can stereotype one end, can stereotype for the board type, also can stereotype for spherical, can stereotype one, also can stereotype many. The shaping mold is simple in structure, low in manufacturing cost, convenient to install, capable of adjusting the shaping style and the shaping quantity of the shaping mold at any time according to the requirements of machined parts, wide in application range, high in practicability and suitable for popularization and application.

3. The utility model discloses a device that opens and shuts realizes a series of processes such as the material loading of raw material stick, clamp tightly, unload, and the clearance between the adjustable relative anchor clamps of device that opens and shuts is applicable to the raw material stick of multiple specification, and the installation of the design mould of being convenient for simultaneously has improved production efficiency, and the range of application is wide, and the practicality is strong.

4. The utility model discloses a clamping device is assisted to elevating gear presss from both sides tight raw material stick, and when raw material stick at the tight in-process of clamp, elevating gear risees, and elevating gear provides the supporting role to the raw material stick bottom surface, has reduced the influence that raw material stick self gravity caused, has improved and has pressed from both sides tight precision, treats that clamping device presss from both sides tight back, and elevating gear descends, and the movable plate of being convenient for removes, and elevating gear has improved raw material stick clamping efficiency machine and has pressed from both sides tight precision, provides the assurance for the qualification rate of tensile system base.

5. The utility model discloses a travel switch sets up drive arrangement's reciprocal stroke to the reciprocal stroke of control movable plate realizes setting up multiple specification to the control of raw material stick tensile length, is suitable for the pole class hardware and tools system base of multiple length, simple structure, convenient operation, low in production cost, and the range of application is wide, and production efficiency is high.

6. The utility model discloses a transmission realizes avoiding scalding the staff in the former excellent transportation of raw materials transportation to the transportation of heating former excellent, has reduced the potential safety hazard, has improved work efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is a second operation state diagram of the embodiment of the present invention.

Fig. 3 is a first operation state diagram of the embodiment of the present invention.

Fig. 4 is a third operating state diagram of the embodiment of the present invention.

Fig. 5 is a fourth operation state diagram according to the embodiment of the present invention.

Fig. 6 is a schematic structural view of a shaping mold according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of an opening and closing device according to an embodiment of the present invention.

Fig. 8 is a first operating state diagram of the opening and closing device according to the embodiment of the present invention.

Fig. 9 is a second operating state diagram of the opening and closing device according to the embodiment of the present invention.

Fig. 10 and 11 are schematic views of another structure of the opening and closing device according to the embodiment of the present invention.

The reference numbers illustrate:

1. working table top 2, driving device 3 and baffle

4. Guide post 5, moving plate 6, moving part

7. Clamping device 8, opening and closing device 9 and fixing part

10. Fixing plate 11, heating device 12 and heating pipe

13. Placing pipe 14, frame 15 and lifting device

16. Raw material rod 17, first clamp 18 and second clamp

19. Third clamp 20, fourth clamp 21, first opening and closing device

22. Second opening and closing device 23, first shaping mold 24 and second shaping mold

25. First fixed die 26, first movable die 27 and second fixed die

28. Second movable die 29, first connecting plate 30 and U-shaped groove

31. Connecting hole 32, first telescopic rod 33 and connecting through hole

34. Shaping groove 35, first telescopic link 36, first telescoping cylinder.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention provides a rod blank stretch forging machine, which is described in detail below with reference to the accompanying drawings.

As shown in figure 1, the bar-type blank stretch forging machine comprises a worktable surface 1, and preferably, a frame 14 is arranged below the worktable surface 1, and the frame 14 is high and suitable for an operator to operate. The worktable 1 is provided with a heating device 11, and the heating device 11 heats the raw material rod 16 and then sends the raw material rod into the clamping device 7. The heating device 11 is a variety of devices that accomplish heating of the feedstock bar 16. The heating device 11 provided by the embodiment comprises a placing pipe 13 and a heating pipe 12, wherein the heating pipe 12 is arranged on the outer surface of the placing pipe 13 in a disc shape, the placing pipe 13 is made of toughened glass, a raw material rod 16 is arranged in the placing pipe 13, and the raw material rod 16 inside is heated through the heating pipe 12.

Preferably, the table top 1 is provided with actuators, which are various means for transferring the raw material bar 16 from the heating means 11 into the clamping means 7. The purpose is to avoid scalding workers in the transportation process of the raw material rod 16, reduce the potential safety hazard and improve the working efficiency. The transmission may be a robotic arm. And various mechanical transmission devices matched with the push rod and the push plate can also be adopted.

As shown in fig. 2, the clamping device 7 comprises a fixed part 9 and a movable part 6, the fixed part 9 comprising a first clamp 17 and a second clamp 18, the movable part 6 comprising a third clamp 19 and a fourth clamp 20. The second clamp 18 is connected to the work surface 1 via a first opening and closing device 21, and the third clamp 19 is connected to the work surface 1 via a second opening and closing device 22. The first clamp 17 and the second clamp 18 are matched with each other through a first opening and closing device 21 to clamp one end of the raw material rod 16, and the third clamp 19 and the fourth clamp 20 are matched with each other through a second opening and closing device 22 to clamp the other end of the raw material rod 16. The moving section 6 is connected to the driving device 2, and the driving device 2 drives the moving section 6 to reciprocate linearly along the central axis direction of the raw material rod 16.

The driving device 2 is matched with the first opening and closing device 21 and the second opening and closing device 22, so that the first clamp 17, the second clamp 18, the third clamp 19 and the fourth clamp 20 have four static states.

As shown in fig. 3, in the first state, the driving device 2 is in the close position, the gap between the fixed part 9 and the moving part 6 is minimum, the first opening/closing device 21 and the second opening/closing device 22 are opened, the gap between the first clamp 17 and the second clamp 18 is opened to the maximum, and the gap between the third clamp 19 and the fourth clamp 20 is also opened to the maximum. The gap between the fixed part 9 and the moving part 6 is smaller than the length of the raw material rod 16, the gap between the first jig 17 and the second jig 18 is larger than the diameter of the raw material rod 16, and the gap between the third jig 19 and the fourth jig 20 is also larger than the diameter of the raw material rod 16. At this point, the raw material bar 16 is placed on the clamping device 7.

As shown in fig. 2, in the second state, the driving device 2 is in the close position, the gap between the fixed part 9 and the moving part 6 is minimum, the first opening and closing device 21 and the second opening and closing device 22 are closed, the gap between the first clamp 17 and the second clamp 18 is minimum, and the gap between the third clamp 19 and the fourth clamp 20 is also closed to be minimum. The gap between the fixed part 9 and the moving part 6 is smaller than the length of the raw material rod 16, the gap between the first jig 17 and the second jig 18 is smaller than the diameter of the raw material rod 16, and the gap between the third jig 19 and the fourth jig 20 is also smaller than the diameter of the raw material rod 16. At this time, the raw material bar 16 is clamped to the jig device 7.

As shown in fig. 4, in the third state, the driving device 2 is in the distal position, the gap between the fixed part 9 and the moving part 6 is the largest, the first opening and closing device 21 and the second opening and closing device 22 are closed, the gap between the first clamp 17 and the second clamp 18 is the smallest, and the gap between the third clamp 19 and the fourth clamp 20 is also closed to the smallest. The gap between the fixed part 9 and the moving part 5 is larger than the length of the raw material rod 16, the gap between the first jig 17 and the second jig 18 is smaller than the diameter of the raw material rod 16, and the gap between the third jig 19 and the fourth jig 20 is also smaller than the diameter of the raw material rod 16. At this time, the raw material bar 16 is clamped by the clamp 7 and stretched.

As shown in fig. 5, in the fourth state, the driving device 2 is in the distal position, the gap between the fixed part 9 and the moving part 6 is maximized, the first opening/closing device 21 and the second opening/closing device 22 are opened, the gap between the first clamp 17 and the second clamp 18 is maximized, and the gap between the third clamp 19 and the fourth clamp 20 is also maximized. The gap between the fixed part 9 and the moving part 6 is larger than the length of the raw material rod 16, the gap between the first jig 17 and the second jig 18 is larger than the diameter of the raw material rod 16, and the gap between the third jig 19 and the fourth jig 20 is also larger than the diameter of the raw material rod 16. At this time, the stretched raw material rod 16 is easily detached from the clamping device 7.

The above four states are alternately and cyclically changed to realize the drawing and blank-making of the raw material rod 16.

Preferably, the bottom of the clamping device 7 is provided with a lifting device 15, and the lifting device 15 assists the clamping device 7 in clamping the raw material rod 16. In the first state, when the raw material rod 16 is clamped, the lifting device 15 is lifted, the lifting device 15 provides a supporting effect for the bottom surface of the raw material rod 16, the influence caused by the gravity of the raw material rod 16 is reduced, and the clamping precision is improved. After the clamping device 7 is clamped, namely, when the clamping device is in the second state, the lifting device 15 descends, so that the moving plate 5 can move conveniently, the lifting device 15 improves the clamping precision of the raw material rod 16 clamping efficiency machine, and the qualification rate of stretching and blank making is guaranteed.

Preferably, a travel switch is arranged on the working table top 1, and the travel switch controls the reciprocating distance of the driving device 2. Also can set up stop device, restriction drive arrangement 2's reciprocal stroke to the reciprocal stroke of control removal portion 6 realizes setting up multiple specification to the control of 16 tensile length of raw material stick, is suitable for the rod class hardware and tools system base of multiple length, simple structure, convenient operation, low in production cost, the range of application is wide, and production efficiency is high.

Preferably, as shown in fig. 3, the clamping device 7 is provided with a shaping mold, and the shaping mold comprises a first shaping mold 23 and a second shaping mold 24. The first shaping mold 23 and the second shaping mold 24 are respectively arranged in a set, and the first shaping mold 23 and the second shaping mold 24 are respectively used for clamping and shaping two ends of the raw material rod 16.

As shown in fig. 4, the first fixing mold 23 includes a first fixed mold 25 and a first movable mold 26, the first fixed mold 25 being disposed on the first jig 17, and the first movable mold 26 being disposed on the second jig 18. The second fixing mold 24 includes a second fixed mold 28 and a second movable mold 27, the second fixed mold 28 being disposed on the fourth jig 20, and the second movable mold 27 being disposed on the third jig 19.

The sizing die may simultaneously stretch the feedstock bar 16 and size both ends of the feedstock bar 16. Preferably, the shaping mold is movably arranged on the clamp, so that the maintenance and the replacement are convenient. And the shaping mold has simple structure, low manufacturing cost and convenient installation. As shown in fig. 6, the shaping mold is provided with shaping grooves 34, and the shaping grooves 34 can shape both end portions of the raw material bar 16 during the drawing process. The shaping groove 34 is plural. The plurality of sizing grooves 34 include a variety of gauges. For example, the sizing die may simultaneously size both ends of the feedstock bar 16, or alternatively, may size one end of the feedstock bar 16; the shaping mold can shape the raw material rod 16 into a plate shape, a spherical shape and various shapes required by processing the raw material rod 16; the shaping mold may be configured to shape one raw material rod 16 or may be configured to shape a plurality of raw material rods 16. The shaping style and the shaping quantity of the shaping groove 34 can be adjusted at any time according to the requirements of the machined piece, the production cost is low, and the application range is wide.

As shown in fig. 1, a fixed plate 10, a moving plate 5 and a baffle 3 are vertically arranged on the working table 1, and the fixed plate 10, the moving plate 5 and the baffle 3 are respectively arranged in parallel. The moving plate 5 is arranged between the fixed plate 10 and the baffle plate 3, the guide posts 4 are arranged between the fixed plate 10 and the baffle plate 3, the guide posts 4 play a role in regulating the linear motion of the moving part 6 relative to the fixed part 9, one guide post 4 can be used, or a plurality of guide posts 4 can be used, and the guide posts 4 penetrate through the moving plate 5. One surface of the fixed plate 10 is connected with the heating device 11, the other surface of the fixed plate 10 is provided with the fixed part 9, one surface of the moving plate 5 is provided with the moving part 6, the other surface of the moving plate 5 is connected with the driving device 2, and the fixed part 9 and the moving part 6 are oppositely arranged between the fixed plate 10 and the moving plate 5. The moving plate 5 is connected with the driving device 2, and the driving device 2 penetrates through the baffle 3.

The driving device 2 is a device for driving the moving plate 5 to reciprocate, the driving device 2 can be a driving motor or a hydraulic rod, the hydraulic rod penetrates through the baffle 3 and is connected with the moving plate 5, and one or more hydraulic rods can be used.

The opening and closing device 8 is a device for realizing the movement of the second clamp 18 and the third clamp 19, so that the size of the gap between the first clamp 17 and the second clamp 18 or between the third clamp 19 and the fourth clamp 20 is changed, a series of processes such as feeding, clamping and discharging of the raw material rod 16 are realized, the opening and closing device 8 can adjust the gap between the opposite clamps, is suitable for the raw material rods 16 with various specifications, and is convenient for the installation of a shaping mold.

The opening and closing device 8 can have various structures, and the structure provided by the embodiment is that the first opening and closing device 21 and the second opening and closing device 22 have the same structure. As shown in fig. 7, the first opening and closing device 21 includes a first connection plate 29, the first connection plate 29 has an L-shaped cross section, and the first connection plate 29 has a U-shaped longitudinal section. The second clamp 18 is placed in the U-shaped recess 30 of the first connecting plate 29 and the fixing plate 10 is placed in the L-shape of the first connecting plate 29. The end of the first connecting plate 29 parallel to the fixing plate 10 is provided with a connecting hole 31, and the first connecting plate 29 is provided with a first telescopic rod 32 perpendicular to the fixing plate 10. A connecting through hole 33 is arranged at the intersection of one end of the second clamp 18 close to the first clamp 17 and one end of the second clamp 18 close to the fixing plate 10, and the connecting hole 31 is connected with the connecting through hole 33 through a rotating shaft. One end of the second clamp 18, which is far away from the first clamp 17, is connected with a first telescopic rod 32, and the first telescopic rod 32 and the rotating shaft enable the first clamp 17 and the second clamp 18 to have two states.

As shown in fig. 8, in the first state, the first telescopic rod is contracted, the second clamp is rotated in the direction away from the first clamp along the rotating axial direction, the gap between the first clamp and the second clamp is increased, and the gap is larger than the diameter of the raw material rod, so that the first opening and closing device is opened, and the raw material rod is conveniently clamped and falls off.

As shown in fig. 9, in the second state, the first telescopic rod 32 is extended, the second clamp 18 is rotated in a direction in which the rotational axis approaches the first clamp 17, the gap between the first clamp 17 and the second clamp 18 is reduced, the gap is smaller than the diameter of the raw material rod 16, the first opening and closing device 21 is closed, and the raw material rod 16 is clamped.

As shown in fig. 10 and 11, the first opening and closing device 8 may further include a first telescopic rod 35 and a first telescopic cylinder 36, one end of the first telescopic rod 35 is disposed in the first telescopic cylinder 36, the other end of the first telescopic rod 35 is connected to the second clamp 18, the second clamp 18 is disposed opposite to the first clamp 17, and the first clamp 17 and the second clamp 18 are separated and clamped by contraction and extension of the first telescopic rod 35.

The opening and closing device 8 can also be in a wedge-shaped mold structure and the like.

The utility model discloses a theory of operation is:

the raw material rod 16 heated by the heating device 11 is conveyed to the clamping device 7 via a driving device.

And opening the first opening and closing device 21 and the second opening and closing device 22, and installing the shaping die required for shaping two ends of the workpiece. The lifting device 15 is lifted, the lifting device 15 provides a supporting effect for the bottom surface of the raw material rod 16, the influence caused by the self gravity of the raw material rod 16 is reduced, and the clamping precision is improved. The first opening and closing device 21 and the second opening and closing device 22 are closed in cooperation with the lifting device 15, so that the raw material rod 16 is clamped and the lifting device 15 is lowered.

The driving device 2 drives the moving plate 5 to move in a direction away from the fixed plate 10, the moving plate 5 is sleeved on the guide post 4 to do linear motion, and when the moving plate 5 contacts the baffle 3, the linear motion stops. In the moving process of the moving plate 5, the moving part 6 clamps one end of the raw material rod 16 to perform stretching movement, after the linear movement is stopped, the first opening and closing device 21 and the second opening and closing device 22 are opened, and the stretched raw material rod 16 falls off from the clamping device 7.

The first opening and closing device 21 and the second opening and closing device 22 are always in an open state, the driving device 2 drives the moving plate 5 to move towards the direction close to the fixed plate 10, the moving plate 5 is sleeved on the guide post 4 to do linear motion, and when the moving part 6 moves to the initial position, the linear motion stops.

The above steps are repeated, and the blank making work can be continuously finished.

The first opening and closing device 21 and the second opening and closing device 22 operate according to the following principle:

the first telescopic rod 32 contracts, the second clamp 18 rotates along the direction of the rotating shaft away from the first clamp 17, the gap between the first clamp 17 and the second clamp 18 is increased, the gap is larger than the diameter of the raw material rod 16, and the first opening and closing device 21 is opened.

The first telescopic rod 32 extends, the second clamp 18 rotates along the direction that the rotating shaft approaches the first clamp 17, the gap between the first clamp 17 and the second clamp 18 is reduced, the gap is smaller than the diameter of the raw material rod 16, and the first opening and closing device 21 is closed.

The utility model has the advantages and positive effects that:

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a rod class blank stretch forging machine, includes table surface, its characterized in that: the material rod clamping device is characterized in that a heating device is arranged on the working table surface, the heating device heats a material rod and then sends the material rod to the clamping device, the clamping device comprises a fixing portion and a moving portion, the fixing portion comprises a first clamp and a second clamp, the moving portion comprises a third clamp and a fourth clamp, the second clamp is connected with the working table surface through a first opening and closing device, the third clamp is connected with the working table surface through a second opening and closing device, the first clamp and the second clamp are matched and clamped with the first opening and closing device, one end of the material rod is clamped by the third clamp, the third clamp and the fourth clamp are matched and clamped by the second opening and closing device, the other end of the material rod is connected with a driving device, and the driving device drives the moving portion to do linear reciprocating motion along the direction of the central axis of the material rod.

2. The bar stock stretch-forging machine according to claim 1, wherein: the clamping device is provided with a shaping mold, the shaping mold comprises a first shaping mold and a second shaping mold, the first shaping mold and the second shaping mold are respectively arranged in a set, and the first shaping mold and the second shaping mold are respectively opposite to the two ends of the raw material rod in a clamping and shaping mode.

3. The bar stock stretch-forging machine according to claim 2, wherein: the first fixed die comprises a first fixed die and a first movable die, the first fixed die is arranged on the first clamp, the first movable die is arranged on the second clamp, the second fixed die comprises a second fixed die and a second movable die, the second fixed die is arranged on the fourth clamp, and the second movable die is arranged on the third clamp.

4. A bar stock stretch-forging machine according to any one of claims 1 to 3, wherein: the working table is provided with a travel switch, and the travel switch controls the reciprocating distance of the driving device.

5. A bar stock stretch-forging machine according to any one of claims 1 to 3, wherein: and the transmission device is arranged on the working table surface and transmits the raw material rod into the clamping device through the heating device.

6. A bar stock stretch-forging machine according to any one of claims 1 to 3, wherein: and a lifting device is arranged at the bottom of the clamping device and assists in clamping the raw material rod.

7. A bar stock stretch-forging machine according to any one of claims 1 to 3, wherein: the heating device is characterized in that the workbench surface is provided with a fixed plate and a movable plate, the fixed plate and the movable plate are arranged in parallel, the fixed plate and the movable plate are perpendicular to the workbench surface respectively, one side of the fixed plate is connected with the heating device, the other side of the fixed plate is provided with a fixed part, one side of the movable plate is provided with a movable part, the other side of the movable plate is connected with the driving device, and the fixed part and the movable part are arranged between the fixed plate and the movable plate relatively.

8. The bar stock stretch-forging machine according to claim 7, wherein: the first opening and closing device and the second opening and closing device have the same structure, the first opening and closing device comprises a first connecting plate, the cross section of the first connecting plate is L-shaped, the longitudinal section of the first connecting plate is U-shaped, the second clamp is arranged in a U-shaped groove of the first connecting plate, the fixed plate is arranged in the L-shaped groove of the first connecting plate, the end part of the parallel surface of the first connecting plate and the fixed plate is provided with a connecting hole, the surface of the first connecting plate, which is perpendicular to the fixed plate, is provided with a first telescopic rod, the intersection of one end of the second clamp, which is close to the first clamp, and one end of the second clamp, which is close to the fixed plate, is provided with a connecting through hole, the connecting hole is connected with the connecting through hole through a rotating shaft, one end of the second clamp, which is far away from the first clamp, is connected with the first telescopic rod, and the first telescopic rod,

9. The bar stock stretch-forging machine according to claim 7, wherein: the worktable is characterized in that a baffle is vertically arranged on the worktable surface, the baffle is respectively parallel to the fixed plate and the movable plate, the baffle is arranged between the movable plate and the driving device, and the movable plate is arranged between the fixed plate and the baffle.

10. The bar stock stretch-forging machine according to claim 9, wherein: a guide post is arranged between the fixed plate and the baffle plate, the guide post penetrates through the movable plate, the movable plate is connected with the driving device, and the driving device penetrates through the baffle plate.