Cylinder type spinning thinning mechanism capable of feeding materials in reciprocating mode

Abstract

The utility model discloses a cylinder type spinning thinning mechanism capable of feeding in a reciprocating mode. The cylinder type spinning thinning mechanism comprises a reciprocating feeding assembly and a spinning thinning assembly. The spinning and thinning assembly comprises a spinning roller for spinning the blank and a driving device for driving the spinning roller to move; the reciprocating feeding assembly is provided with a fixed mold and a reciprocating driving part, and the reciprocating driving part drives the fixed mold to enter or leave the spinning range of the spinning roller; the fixed mold is used for bearing a blank, and the surface of the fixed mold is in a target shape required to be formed by the blank; the driving device drives the spinning roller to be close to or away from the blank and drives the spinning roller to move along the surface of the fixed mold so as to extrude the blank and stretch the blank along the surface of the fixed mold for forming; and a preset distance is kept between the spinning roller and the surface of the fixed mold. According to the scheme, the belt pulley forming efficiency is higher, and machining is more convenient.

Description

Technical Field

[0001] The utility model relates to a processing technology for a pulley of an agricultural machine, in particular to a barrel-type spinning and thinning mechanism capable of reciprocating feeding. Background Art

[0002] Most large cylindrical parts are formed by multiple stretching, which requires multiple sets of molds to complete. The mold cost is high. In addition, cylindrical products require different thicknesses inside, and sometimes several machines are needed to complete the processing. The process is complicated and the cost is high, and no improvement or breakthrough has been made.

[0003] Referring to the prior art patent document, the timing signal spinning pulley (CN212762000U), the disclosed solution is to process and form it by stretching and turning. This solution has a complicated process and low efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a drum-type spinning thinning mechanism with reciprocating feeding, which can make the pulley forming efficiency higher and the processing more convenient.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A cylindrical spinning and thinning mechanism with reciprocating feeding, comprising a reciprocating feeding component and a spinning and thinning component; the spinning and thinning component comprises a rotary wheel for spinning the blank and a driving device for driving the rotary wheel to move; the reciprocating feeding component is provided with a fixed mold and a reciprocating driving component, and the reciprocating driving component drives the fixed mold to enter or leave the spinning range of the rotary wheel; the fixed mold is used to carry the blank, and the surface of the fixed mold is the target shape required for the blank to be formed; the driving device drives the rotary wheel to approach or move away from the blank and drives the rotary wheel to move along the surface of the fixed mold to extrude the blank and stretch the blank along the surface of the fixed mold; the rotary wheel maintains a preset distance from the surface of the fixed mold.

[0006] As a further improvement of the present invention, the driving device includes a rotating driving member for driving the rotating wheel to rotate and a moving driving member for driving the rotating wheel to move closer to or away from the fixed mold.

[0007] As a further improvement of the present invention, the fixed mold is provided with a positioning structure for fixing the blank. The positioning structure includes a mounting portion arranged on the fixed mold and a connecting piece cooperating with the mounting portion. The connecting piece passes through the blank and is connected to the mounting portion to fix the blank on the fixed mold.

[0008] As a further improvement of the present invention, the mounting portion is a mounting hole, the connecting member is a bolt, a through hole is provided on the blank at a position corresponding to the mounting hole, and the bolt passes through the through hole and is threadedly connected to the mounting hole.

[0009] As a further improvement of the present invention, the end of the rotating wheel corresponding to the blank is provided with an arc structure, and at least the surface corresponding to the stretching direction of the blank is provided with a transition portion, which is an inclined surface or an arc-shaped transition surface to extrude and push the blank to stretch.

[0010] As a further improvement of the present invention, the reciprocating feeding assembly includes a base, a telescopic support structure installed on the base, a support platform arranged on the telescopic support structure, and a feed drive installed on the base for driving the telescopic support structure to move; the fixed mold is installed on the support platform, and the feed drive drives the support platform and the fixed mold to reciprocate by driving the telescopic support structure to move. The transmission direction of the reciprocating feeding includes the up and down longitudinal direction and the left and right horizontal direction.

[0011] As a further improvement of the present invention, the telescopic support structure is a scissors-type bracket, the bottom of the scissors-type bracket is slidably connected to the base, the feed drive member includes a horizontal drive member and an inclined drive member, one end of the horizontal drive member is connected to the base, and the other end is connected to the bottom of the scissors-type bracket, and the inclined drive member is connected to the middle or top of the scissors-type bracket.

[0012] As a further improvement of the present invention, when the horizontal driving member is working, the inclined driving member is in a non-working state and forms a constraint on the scissors fork bracket, so that the scissors fork bracket generates horizontal movement and up and down lifting movement at the same time under the drive of the horizontal driving member; when the inclined driving member is working, the horizontal driving member is in a non-working state and forms a constraint on the scissors fork bracket, so that the scissors fork bracket generates horizontal movement and up and down lifting movement at the same time under the drive of the inclined driving member.

[0013] A spinning thinning device comprises a bracket, an air cooling mechanism mounted on the bracket, and a barrel-type spinning thinning mechanism as described above mounted in the bracket, wherein the air cooling mechanism is used to cool a spinning wheel and a blank.

[0014] The beneficial effects of this utility model are that the reciprocating feed assembly drives the fixed die in and out of the spinning range, and the spinning thinning assembly's roller moves along the surface of the fixed die to extrude the billet, achieving a single stretch forming of the billet to the target shape. Compared to existing processes that require multiple sets of dies for multiple stretchings and several turning passes for differentiated wall thicknesses, this reduces the number of dies used, eliminates subsequent turning steps, and reduces die costs and material waste. The reciprocating feed design improves operational convenience, and the preset spacing between the roller and the die helps reduce billet cracking, thereby improving forming efficiency and quality to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2This is a schematic diagram of the three-dimensional structure of the reciprocating drive component of the utility model;

[0017] Figure 3 This is a schematic diagram of the main structure of the reciprocating drive component of the present utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the reciprocating drive component of the utility model (partial telescopic support structure is hidden);

[0019] Figure 5 This is a schematic diagram of the main structure of the reciprocating drive component of the present invention (partial telescopic support structure is hidden).

[0020] Figure numbers: 1. Re-feeding assembly; 11. Fixed mold; 111. Positioning structure; 12. Reciprocating drive component; 121. Base; 122. Telescopic support structure; 123. Support platform; 124. Feed drive component; 1241. Horizontal drive component; 1242. Tilt drive component; 2. Spinning and thinning assembly; 21. Rotating wheel; 211. Transition part; 22. Drive device; 3. Air cooling mechanism. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0022] Reference Figure 1-5 As shown, a cylindrical spinning thinning mechanism with reciprocating feeding includes a reciprocating feeding component 1 and a spinning thinning component 2; the spinning thinning component 2 includes a rotating wheel 21 for spinning the blank and a driving device 22 for driving the rotating wheel 21 to move; the reciprocating feeding component 1 is provided with a fixed mold 11 and a reciprocating driving component 12, and the reciprocating driving component 12 drives the fixed mold 11 to enter or leave the spinning range of the rotating wheel 21; the fixed mold 11 is used to carry the blank, and the surface of the fixed mold 11 is the target shape required for the blank to be formed; the driving device 22 drives the rotating wheel 21 to approach or move away from the blank and drives the rotating wheel 21 to move along the surface of the fixed mold 11 to extrude the blank and stretch the blank along the surface of the fixed mold 11; the rotating wheel 21 maintains a preset distance from the surface of the fixed mold 11.

[0023] The fixed die 11 of the reciprocating feeding assembly 1 is connected to the reciprocating drive component 12 via bolts or a snap-fit ​​mechanism. The blank is placed on the surface of the fixed die 11 and conforms to its target shape. The reciprocating drive component 12 (e.g., a hydraulic cylinder) is connected to the fixed die 11 via a piston rod, driving the fixed die 11 along a guide rail to enter the spinning range of the roller 21. The drive device 22 of the spinning thinning assembly 2 is connected to the roller 21 via a drive shaft. When the blank is in place, the drive device 22 first drives the roller 21 radially toward the blank to a preset distance (this distance is set according to the target thickness of the blank, and this preset distance can be adjusted to change the thickness of the blank at different locations during forming). Then, it drives the roller 21 to move along the surface of the fixed die 11 (i.e., the surface of the blank to be formed). Under the extrusion action of the rotating wheel 21, the blank is stretched along the surface of the fixed mold 11, and the effect of multiple stretching in the traditional process can be achieved in one molding. To a certain extent, the number of molds used is reduced, and the problem of blank cracking caused by multiple stretching is alleviated. At the same time, since there is no need for subsequent multiple turning, the processing process can be shortened, the molding efficiency is improved, and the processing thickness is easy to control.

[0024] Preferably, the drive device 22 includes a rotating drive member for driving the rotating wheel 21 to rotate and a movable drive member for driving the rotating wheel 21 toward or away from the fixed mold 11. The rotating drive member of the drive device 22 (such as a servo motor) is connected to the axle of the rotating wheel 21 via a coupling, and can drive the rotating wheel 21 to rotate about its own axis; the slider of the movable drive member (such as a ball screw) is fixedly connected to the mounting seat of the rotating drive member, and the rotation of the screw drives the slider and the rotating wheel 21 radially toward or away from the fixed mold 11. When the rotating wheel 21 rotates, it contacts the blank and generates rolling friction. Compared with sliding friction, it is easier to evenly deform the blank and reduce scratches on the blank surface. The movable drive member can accurately adjust the distance between the rotating wheel 21 and the blank, making the control of the preset spacing more precise, thereby improving the uniformity of the blank thickness to a certain extent.

[0025] To ensure more stable fixation of the blank, the fixed mold 11 is provided with a positioning structure 111 for fixing the blank. The positioning structure 111 includes a mounting portion provided on the fixed mold 11 and a connector that cooperates with the mounting portion. The connector passes through the blank and connects to the mounting portion to fix the blank to the fixed mold 11. The mounting portion is a mounting hole, and the connector is a bolt. The blank is provided with a through hole at a position corresponding to the mounting hole. The bolt passes through the through hole and is threadedly connected to the mounting hole.

[0026] The mounting portion of the fixed mold 11 can be configured as a boss or screw hole, and the connector can be a pin or bolt, which is removably fixed to the mounting portion through a clearance fit or threaded connection. After the blank is placed in the fixed mold 11, the connector passes through the blank's pre-set positioning hole and connects to the mounting portion, fastening the blank to the surface of the fixed mold 11. This positioning structure 111 can limit the blank's circumferential rotation and axial displacement during the spinning process, reducing forming deviations caused by loosening of the blank, and to a certain extent improving the dimensional accuracy of the product. At the same time, the detachable design of the connector facilitates the assembly and disassembly of the blank, improving operational convenience.

[0027] Of course, a spline can be provided on the end surface of the fixed die 11 to further limit the rotation of the blank, thereby improving the stability of the processing.

[0028] In order to facilitate the stretching of the blank, the end of the rotating wheel 21 corresponding to the blank is provided with an arc structure, and at least the surface corresponding to the stretching direction of the blank is provided with a transition portion 211, which is an inclined surface or an arc-shaped transition surface to squeeze and push the blank to stretch.

[0029] The curved structure of the roller 21 matches the target curved profile of the billet end, with a radius slightly larger than the target radius of the billet end. A transition portion 211 connects the curved structure to the outer circumference of the roller 21 and can also be an inclined surface. As the roller 21 moves along the billet's stretching direction, the transition portion 211 first contacts and gradually squeezes the billet, gradually increasing the force applied to the billet from a point to the surface, reducing stress concentration and alleviating the risk of cracking at the billet end. The curved structure also ensures that the billet end is formed more closely to the target shape, reducing subsequent finishing steps and improving forming quality.

[0030] In an optional solution, the reciprocating feeding assembly 1 includes a base 121, a telescopic support structure 122 installed on the base 121, a support platform 123 arranged on the telescopic support structure 122, and a feed drive 124 installed on the base 121 for driving the telescopic support structure 122 to move; the fixed mold 11 is installed on the support platform 123, and the feed drive 124 drives the telescopic support structure 122 to move, thereby driving the support platform 123 and the fixed mold 11 to reciprocate, and the transmission direction of the reciprocating feeding includes the up and down longitudinal direction and the left and right horizontal direction.

[0031] The base 121 of the reciprocating feed assembly 1 can be placed or fixed to the ground. The telescopic support structure 122 (e.g., a folding frame) is hinged at its bottom to the base 121 and at its top to the support platform 123. The cylinder of the feed drive 124 (e.g., an electric push rod) is hinged to the base 121, and the piston rod is hinged to the middle of the telescopic support structure 122. When the feed drive 124 extends or retracts, it drives the telescopic support structure 122 to expand or contract, thereby driving the support platform 123 and the fixed mold 11 to reciprocate in the vertical or horizontal directions. This structure allows for flexible adjustment of the spatial position of the fixed mold 11, allowing the blank to adapt to the processing requirements of the rotating wheel 21 at different heights or horizontal positions, expanding the scope of application of the mechanism and improving the versatility of the equipment to a certain extent.

[0032] As an embodiment with a simple structure, the telescopic support structure 122 is a scissors-type bracket, the bottom of the scissors-type bracket is slidably connected to the base 121, and the feed drive member 124 includes a horizontal drive member 1241 and an inclined drive member 1242. One end of the horizontal drive member 1241 is connected to the base 121, and the other end is connected to the bottom of the scissors-type bracket, and the inclined drive member 1242 is connected to the middle or top of the scissors-type bracket.

[0033] As shown in the figure, the scissors bracket is composed of multiple groups of cross-hinged connecting rods. One end of the bottom connecting rod is slidably connected to the base 121, and the other end is slidably connected to the slide rail of the base 121 through a slider; the cylinder body of the horizontal driving member 1241 (such as a cylinder or hydraulic rod) is fixed to the base 121, and the piston rod is connected to the connecting rod at the sliding end; the cylinder body of the tilting driving member 1242 (such as a cylinder or hydraulic rod) is hinged to the base 121, and the piston rod is connected to the scissors bracket. When the horizontal driving member 1241 is extended or retracted, it can push the slider to slide along the slide rail to expand or retract the scissors bracket; when the tilting driving member 1242 is extended or retracted, it can directly push the scissors bracket to move and assist in adjusting the height of the bracket. The scissors bracket has good structural stability, can provide more uniform support force, reduce the shaking of the support platform 123 during movement, and improve the stability of feeding to a certain extent. Especially when the following solution is adopted:

[0034] When the horizontal driving member 1241 is working, the inclined driving member 1242 is in a non-working state and forms a constraint on the scissors fork bracket, so that the scissors fork bracket generates horizontal movement and up and down lifting movement at the same time under the drive of the horizontal driving member 1241; when the inclined driving member 1242 is working, the horizontal driving member 1241 is in a non-working state and forms a constraint on the scissors fork bracket, so that the scissors fork bracket generates horizontal movement and up and down lifting movement at the same time under the drive of the inclined driving member 1242.

[0035] When horizontal driver 1241 is operating, the piston rod of tilt driver 1242 is locked (non-operating state), and its connection point with the scissor bracket is fixed. When horizontal driver 1241 pushes the slider to slide, the scissor bracket is forced to move horizontally and rise and fall simultaneously due to the constraint of tilt driver 1242. Similarly, when tilt driver 1242 is operating, the slider of horizontal driver 1241 is locked. When tilt driver 1242 pushes the scissor bracket, the bracket is constrained in the horizontal direction by the slider, thereby achieving simultaneous horizontal movement and rise and fall. This collaborative working method can achieve complex motions with a single driver, reducing the difficulty of synchronous control of the driver, improving the adjustment accuracy of the feed position to a certain extent, and reducing the control complexity of the equipment.

[0036] The above introduces a cylindrical spinning thinning mechanism that can feed reciprocatingly. Its application in spinning thinning equipment can constitute the following scheme: a spinning thinning equipment, including a bracket, an air cooling mechanism 3 installed on the bracket, and a cylindrical spinning thinning mechanism as above installed in the bracket, and the air cooling mechanism 3 is used to cool the rotating wheel 21 and the blank.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A cylindrical spinning thinning mechanism capable of reciprocating feeding, characterized in that: It includes a reciprocating feeding component and a spinning and thinning component; the spinning and thinning component includes a rotary wheel for spinning the blank and a driving device for driving the rotary wheel to move; the reciprocating feeding component is provided with a fixed mold and a reciprocating driving component, and the reciprocating driving component drives the fixed mold to enter or leave the spinning range of the rotary wheel; the fixed mold is used to carry the blank, and the surface of the fixed mold is the target shape required for the blank to be formed; the driving device drives the rotary wheel to approach or move away from the blank and drives the rotary wheel to move along the surface of the fixed mold to extrude the blank and stretch the blank along the surface of the fixed mold; the rotary wheel maintains a preset distance from the surface of the fixed mold.

2. The barrel-type spinning thinning mechanism according to claim 1, characterized in that: The driving device comprises a rotating driving member for driving the rotating wheel to rotate and a moving driving member for driving the rotating wheel to approach or move away from the fixed mold.

3. The barrel-type spinning thinning mechanism according to claim 1, characterized in that: The fixed mold is provided with a positioning structure for fixing the blank. The positioning structure includes a mounting portion provided on the fixed mold and a connecting piece cooperating with the mounting portion. The connecting piece passes through the blank and is connected to the mounting portion to fix the blank on the fixed mold.

4. The barrel-type spinning thinning mechanism according to claim 3, characterized in that: The mounting portion is a mounting hole, the connecting piece is a bolt, a through hole is provided on the blank at a position corresponding to the mounting hole, and the bolt passes through the through hole and is threadedly connected to the mounting hole.

5. The barrel-type spinning thinning mechanism according to claim 1, characterized in that: The end of the rotating wheel corresponding to the blank is provided with an arc structure, and at least the surface corresponding to the stretching direction of the blank is provided with a transition portion, and the transition portion is an inclined surface or an arc-shaped transition surface to push the blank to stretch by extrusion.

6. The barrel-type spinning thinning mechanism according to claim 1, characterized in that: The reciprocating feeding assembly includes a base, a telescopic support structure installed on the base, a support platform arranged on the telescopic support structure, and a feed drive installed on the base for driving the telescopic support structure to move; the fixed mold is installed on the support platform, and the feed drive drives the telescopic support structure to move, thereby driving the support platform and the fixed mold to reciprocate, and the transmission direction of the reciprocating feeding includes the up and down longitudinal direction and the left and right horizontal direction.

7. The barrel-type spinning thinning mechanism according to claim 6, characterized in that: The telescopic support structure is a scissor bracket, the bottom of the scissor bracket is slidably connected to the base, the feed drive member includes a horizontal drive member and an inclined drive member, one end of the horizontal drive member is connected to the base, and the other end is connected to the bottom of the scissor bracket, and the inclined drive member is connected to the middle or top of the scissor bracket.

8. The barrel-type spinning thinning mechanism according to claim 7, characterized in that: When the horizontal driving member is working, the inclined driving member is in a non-working state and constrains the scissors fork bracket, so that the scissors fork bracket generates horizontal movement and up and down lifting motion simultaneously under the drive of the horizontal driving member; when the inclined driving member is working, the horizontal driving member is in a non-working state and constrains the scissors fork bracket, so that the scissors fork bracket generates horizontal movement and up and down lifting motion simultaneously under the drive of the inclined driving member.

9. A spinning thinning device, characterized in that: It comprises a bracket, an air cooling mechanism installed on the bracket, and a barrel-type spinning thinning mechanism as described in any one of claims 1 to 8 installed in the bracket, wherein the air cooling mechanism is used to cool the rotating wheel and the blank.

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