Reciprocating variable diameter drive wheel arrangement

Abstract

The invention discloses a reciprocating variable diameter transmission wheel device, which comprises a composite wheel surface, a guide clamping base, a synchronous chuck and an involute cam; the involute cam is fixed on a wheel frame, and a transmission shaft passes through the involute cam; the synchronous chuck is sleeved on the transmission shaft, and the synchronous chuck is provided with a plurality of synchronous guide slots; the guide clamping base is fixed on the transmission shaft, and the guide clamping base forms a plurality of sleeves; the composite wheel surface is composed of a plurality of arc surfaces, the concave center of each arc surface has a radial rod extending to the wheel core and is inserted into a sleeve of the guide clamping base, a reset spring is arranged between the corresponding arc surface and the sleeve, a guide block is further arranged on the radial rod of each arc surface and located in the corresponding synchronous guide slot, and the radial rod of one of the arc surfaces is lengthened to form a driving rod, and the inner end of the driving rod always abuts against the involute cam. The device realizes uniform acceleration rotation of variable diameter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical transmission, in particular to a reciprocating variable-diameter transmission wheel device, which can be used in automatic processing production in injection molding processing and other industries, and provides uniform acceleration movement. BACKGROUND

[0002] With the continuous development of science and technology, especially the wide application of computers, production and manufacturing have put forward higher and higher requirements for automation technology, and automation has developed towards complex system control and advanced intelligent control, and has been widely applied to national defense, scientific research and economy and other fields, realizing larger-scale automation.

[0003] As known, even in automatic processing production, the application of mechanical transmission devices is still the most extensive. Automatic processing production cannot be separated from various transmission wheel structures. Among them, the common variable-diameter transmission wheel is mainly a cam structure. At present, there is no variable-diameter transmission device that can realize uniform acceleration in the industry. Therefore, the present application is produced based on the inventor's long-term manufacturing and processing experience, and the mechanical transmission device is intensively researched, and a special device that can realize uniform acceleration transmission is specially designed. SUMMARY

[0004] The purpose of the present application is to provide a reciprocating variable-diameter transmission wheel device to realize uniform acceleration transmission.

[0005] In order to achieve the above purpose, the solution of the present application is as follows:

[0006] The reciprocating variable-diameter transmission wheel device comprises a composite wheel surface, a guide clamping seat, a synchronous chuck and an involute cam. The involute cam is fixed on a wheel frame, and a transmission shaft penetrates through the involute cam. The synchronous chuck is sleeved on the transmission shaft, and the synchronous chuck is distributed with a plurality of synchronous guide grooves. The guide clamping seat is fixed on the transmission shaft, and the guide clamping seat forms a plurality of sleeves corresponding to the synchronous guide grooves of the synchronous chuck. The composite wheel surface is composed of a plurality of arc surfaces, the concave center of each arc surface has a radial rod extending to the wheel core, the radial rod of each arc surface is inserted into one sleeve of the guide clamping seat, and a reset spring is arranged between the corresponding arc surface and the sleeve. Each radial rod is also provided with a guide block, and the guide block on each radial rod is located in the synchronous guide groove of the corresponding synchronous chuck. The radial rod of one arc surface is lengthened to form a driving rod, and the inner end of the driving rod always abuts against the involute cam. The transmission shaft drives the guide clamping seat to rotate, and the guide clamping seat drives the arc surface of the composite wheel surface to rotate through the sleeve and the radial rod. The driving rod and the involute cam cooperate to make the corresponding arc surface of the driving rod rise or fall, and the guide block and the synchronous guide groove cooperate to make all the arc surfaces rise and fall synchronously, so as to realize the uniform acceleration rotation of the variable-diameter.

[0007] The involute cam is heart-shaped, has a top concave recess and a bottom convex apex, and the left and right wheel surfaces of the recess and the apex are involute curved surfaces, and the lower surface of the recess forms an axle hole for the transmission shaft to pass through.

[0008] The guide holder is multi-prong-shaped, has several prongs radiating outward from the center, and the outer end of each prong forms a sleeve.

[0009] The synchronous guide groove is arc-shaped and extends from the center to the edge of the synchronous chuck.

[0010] The composite wheel surface has two reset small springs connected to the corresponding sleeve for each arc-shaped surface, the two reset small springs are symmetrically located on the two sides of the radial rod, and one end of the reset small spring is connected to the sleeve and the other end is connected to the inner concave surface of the arc-shaped surface.

[0011] The inner concave surface of each arc-shaped surface forms a rib, and the two ends of the reset small spring are fixed on the sleeve and the rib.

[0012] The rib of each arc-shaped surface forms a lug, and the sleeve also forms a lug, and the two ends of the reset small spring are fixed on the lugs of the sleeve and the rib.

[0013] The wheel frame adopts a triangular support.

[0014] The wheel frame has a fixed cam, one side of the fixed cam is fixed with the wheel frame, the other side of the fixed cam is fixed with the involute cam, and the transmission shaft penetrates the fixed cam and the involute cam.

[0015] After the above scheme is adopted, when the reciprocating variable diameter wheel assembly of the present application works, the guide holder is driven to rotate by the transmission shaft, the rotating guide holder drives all the arc-shaped surfaces of the composite wheel surface to rotate through the cooperation of the sleeve and the radial rod, at this time, the rotating drive rod cooperates with the involute cam, so that the drive rod is gradually pushed outwards or gradually falls inwards along the involute cam, the drive rod drives the corresponding arc-shaped surface to rise or fall, at the same time, the synchronous chuck drives all the arc-shaped surfaces to keep synchronous rising and falling motion through the cooperation of the guide block and the synchronous guide groove, in the whole process, the uniform acceleration is generated by the design of the involute, so that the uniform acceleration transmission of variable diameter is realized, and based on the design of the involute, the uniform acceleration is controllable, which can meet the requirements of various uniform acceleration motions, and has high applicability. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present application;

[0017] Figure 2 is Figure 1 a front view of

[0018] Figure 3 is Figure 2Structure diagram of the guiding holder without the wheel frame;

[0019] Figure 4 is Figure 2 Rear view of the wheel frame;

[0020] Figure 5 is Figure 2 Rear view of the wheel frame and the fixed cam;

[0021] Figure 6 is Figure 1 Structure diagram of the synchronizing chuck without the wheel frame;

[0022] Figure 7 is Figure 1 Structure diagram of the guiding holder and the synchronizing chuck without the wheel frame;

[0023] Figure 8 Structure diagram of the guiding holder of the present application;

[0024] Figure 9 Structure diagram of the synchronizing chuck of the present application;

[0025] Figure 10 Structure diagram of the wheel frame of the present application.

[0026] Explanation of the reference numerals:

[0027] Transmission shaft 1;

[0028] Wheel frame 2, fixed cam 21;

[0029] Guiding holder 3, sleeve 31, reset small spring 32, lug 33;

[0030] Synchronizing chuck 4, synchronizing guide slot 41;

[0031] Involute cam 5, recess 51, heart tip 52, involute curved surface 53, shaft hole 54;

[0032] Arc surface 6, radial rod 61, driving rod 61A, guide block 62, rib 63, lug 64. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are the preferred embodiments of the present application, and should not be seen as excluding other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0034] The reciprocating variable-diameter transmission wheel device disclosed in the present application comprises a transmission shaft, a wheel frame, a guiding holder, a synchronizing chuck, and an involute cam. Figures 1 to 10As shown, it comprises a composite wheel face, a guide holder 3, a synchronous chuck 4 and an involute cam 5.

[0035] The involute cam 5 is fixed on the wheel frame 2, and the transmission shaft 1 passes through the corresponding involute cam 5.

[0036] The synchronous chuck 4 is sleeved on the transmission shaft 1, and the synchronous chuck 4 is provided with a plurality of synchronous guide grooves 41. The synchronous guide grooves 41 are preferably designed in an arc shape, and the arc-shaped synchronous guide grooves 41 extend from the center to the edge of the synchronous chuck 4.

[0037] The guide holder 3 is fixed on the transmission shaft 1 and rotates with the transmission shaft 1, and the guide holder 3 forms a plurality of sleeves 31 corresponding to the synchronous guide grooves 41 of the synchronous chuck 4.

[0038] The composite wheel face is composed of a plurality of arc faces 6, and the specific number of the arc faces 6 is not limited by the drawings. The number of the arc faces 6 is consistent with the number of the synchronous guide grooves 41 and the number of the sleeves 31, so as to ensure the linkage between the components. The concave center of each arc face 6 has a radial rod 61 extending to the wheel core.

[0039] The radial rod 61 of each arc face 6 is inserted into one sleeve 31 of the guide holder 3. On the one hand, the radial rod 61 can be fixed by the guide holder 3, so that a plurality of arc faces 6 can be combined into a composite wheel face, and a plurality of arc faces 6 can rotate with the guide holder 3 driven by the transmission shaft 1, so as to realize the rotation of the entire reciprocating variable-diameter transmission wheel device. On the other hand, the radial rod 61 of the arc face 6 can slide in the sleeve 31, so as to realize the expansion and reduction of the diameter of the entire reciprocating variable-diameter transmission wheel device.

[0040] A reset small spring 32 is arranged between each arc face 6 and the corresponding sleeve 31, so that the radial rod 61 can be reset after sliding in the sleeve 31 by means of the reset small spring 32. That is, the diameter of the entire reciprocating variable-diameter transmission wheel device can be reduced by means of the reset small spring 32 after expansion.

[0041] The radial rod 61 of each arc face 6 also has a guide block 62, and the guide block 62 on each radial rod 61 is located in the synchronous guide groove 41 of the corresponding synchronous chuck 4. In this way, when the radial rod 61 of one arc face 6 slides, it can drive the radial rods 61 of other arc faces 6 to slide together by means of the synchronous guide groove 41, so that all the arc faces 6 move synchronously, realizing the uniform expansion and uniform reduction of the entire composite wheel face. The radial rod 61 of one arc face 6 is lengthened to form a driving rod 61A, and the inner end of the driving rod 61A always abuts against the involute cam 5. By means of the involute profile of the involute cam 5, the driving rod 61A can be lifted outward or dropped inward, thereby realizing the variable-diameter effect.

[0042] In operation, the guiding clamping seat 3 is rotated by the transmission shaft 1, and the plurality of arc surfaces 6 of the composite wheel surface are rotated with the guiding clamping seat 3 by the cooperation of the radial rod 61 and the sleeve 31. The driving rod 61A is gradually lifted outward or falls inward along the involute cam 5, and the corresponding arc surface 6 of the driving rod 61A is lifted and lowered, by the cooperation of the driving rod 61A and the involute cam 5. At the same time, all the arc surfaces 6 are kept synchronous lifting and lowering by the cooperation of the guide block 62 and the synchronous guide groove 41, driven by the synchronous chuck 4. Thus, the uniform diameter change of the reciprocating variable diameter wheel assembly is realized. In the whole process of operation, the uniform acceleration is generated by the design of the involute, so that the uniform acceleration transmission of the variable diameter is realized. Moreover, the uniform acceleration is controllable based on the design of the involute, which can meet the requirements of various uniform acceleration motions, and has high applicability.

[0043] The involute cam 5 is preferably heart-shaped, has a top recess 51 and a bottom convex heart apex 52, and the left and right wheel surfaces of the recess 51 and the heart apex 52 are involute curved surfaces 53. The bottom of the recess 51 forms an axle hole 54 for the transmission shaft 1 to pass through. The shape of the involute cam 5 is different, and different diameter change effects and different uniform accelerations can be obtained.

[0044] The guiding clamping seat 3 is preferably multi-claw-shaped, simple in structure, light in weight, low in energy consumption, and more conducive to transmission. Specifically, the guiding clamping seat 3 has a plurality of claws radiating outward from the center, and the outer end of each claw forms a sleeve 31.

[0045] The composite wheel surface has two reset small springs 32 connected to the corresponding sleeve 31 for each arc surface 6 to ensure uniform diameter change and avoid deflection. The two reset small springs 32 are symmetrically located on both sides of the radial rod 61, one end of the reset small spring 32 is connected to the sleeve 31, and the other end is connected to the inner concave surface of the arc surface 6. Further, the inner concave surface of each arc surface 6 forms a rib 63, and the two ends of the reset small spring 32 are fixed on the sleeve 31 and the rib 63. The rib 63 strengthens the arc surface 6, and facilitates the installation of the reset small spring 32. Further, the rib 63 of each arc surface 6 forms a lug 64, and the sleeve 31 also forms a lug 33. The two ends of the reset small spring 32 are fixed on the lug 33 of the sleeve 31 and the lug 64 of the rib 63.

[0046] The wheel frame 2 preferably adopts a triangular support, and the top of the triangular support is installed with the reciprocating variable diameter transmission wheel device through the transmission shaft 1. The triangular support is simple in structure and stable. Further, the wheel frame 2 also has a fixed cam 21, one side of the fixed cam 21 is fixed with the wheel frame 2, and the other side of the fixed cam 21 is fixed with the involute cam 5. The transmission shaft 1 penetrates the fixed cam 21 and the involute cam 5, so that the transmission shaft 1 can be reinforced, and the interference between components can be avoided.

[0047] In the claims, specification, and drawings of the present disclosure, terms used for the expressions "include" and "have", and their conjugates, are intended to designate "including but not limited to", unless otherwise noted.

[0048] In the present specification, orientation terms such as upper, lower, left, right, front, rear, front surface, rear surface, top, bottom, etc. mentioned or possibly mentioned are defined with respect to the configuration shown in the drawings, and are relative concepts, and thus can be changed accordingly depending on different positions, different use states, etc. Therefore, these or other orientation terms should not be interpreted as limiting terms.

[0049] The above description is merely the preferred embodiments of the present application, and is not intended to limit the design of the present application. Any equivalent changes made according to the key design of the present application shall fall within the scope of protection of the present application.

Claims

1. A reciprocating variable diameter transmission wheel device, characterized in that: The system includes a composite wheel surface, a guide chuck, a synchronizing chuck, and an involute cam. The involute cam is fixed to the wheel frame, and the drive shaft passes through the involute cam. The synchronizing chuck is fitted onto the drive shaft and has several synchronizing guide grooves. The guide chuck is fixed to the drive shaft and forms several sleeves corresponding to the synchronizing guide grooves of the synchronizing chuck. The composite wheel surface is composed of several arc-shaped surfaces, each with a radial rod extending towards the wheel center at the concave center. The radial rod of each arc-shaped surface is inserted into a sleeve of the guide chuck, and a reset pin is provided between the corresponding arc-shaped surface and the sleeve. The spring has a guide block on each radial rod of the arc surface, and the guide block on each radial rod is located in the synchronous guide groove of the corresponding synchronous chuck. The radial rod of one of the arc surfaces is extended to form a drive rod, and the inner end of the drive rod always abuts against the involute cam. The transmission shaft drives the guide chuck to rotate, and the guide chuck drives the arc surface of the compound wheel to rotate through the sleeve and the radial rod. The drive rod and the involute cam make the arc surface corresponding to the drive rod rise or fall. The guide block and the synchronous guide groove make all the arc surfaces rise and fall synchronously, realizing uniform acceleration rotation with variable diameter.

2. The reciprocating variable diameter transmission wheel device as described in claim 1, characterized in that: The involute cam is heart-shaped, with a recessed top and a convex bottom. The wheel surfaces on the left and right sides of the recess and the convex bottom are involute curved surfaces, and a shaft hole is formed on the bottom of the recess for the drive shaft to pass through.

3. The reciprocating variable diameter transmission wheel device as described in claim 1, characterized in that: The guide holder is multi-claw shaped, with several claws radiating outward from the center, and the outer end of each claw forms a sleeve.

4. The reciprocating variable diameter transmission wheel device as described in claim 1, characterized in that: The synchronous guide groove is arc-shaped and extends from the center of the synchronous chuck to the edge.

5. The reciprocating variable diameter transmission wheel device as described in claim 1, characterized in that: The composite wheel surface has two small return springs connected to the corresponding sleeve on each arc surface. The two small return springs are symmetrically located on both sides of the radial rod. One end of the small return spring is connected to the sleeve and the other end is connected to the concave surface of the arc surface.

6. The reciprocating variable diameter transmission wheel device as described in claim 1, characterized in that: The concave surface of each arc-shaped surface forms a rib, and the two ends of the reset spring are fixed to the sleeve and the rib.

7. The reciprocating variable diameter transmission wheel device as described in claim 6, characterized in that: Lugs are formed on the ribs of each arc-shaped surface, and lugs are also formed on the sleeve. The two ends of the reset spring are fixed on the lugs of the sleeve and the ribs.

8. The reciprocating variable diameter transmission wheel device as described in claim 1, characterized in that: All wheel frames use triangular brackets.

9. The reciprocating variable diameter transmission wheel device as described in claim 1, characterized in that: The wheel frame has a fixed cam, one side of which is fixed to the wheel frame, and the other side of which is fixed to an involute cam. The drive shaft passes through the fixed cam and the involute cam.

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