A reciprocating mechanism with adjustable stroke

Abstract

The present invention discloses a reciprocating mechanism with adjustable stroke, which comprises a housing, and a reciprocating transmission assembly and an adjustment assembly are arranged inside the housing; the reciprocating transmission assembly includes an input gear, an output gear, a transmission gear ring, and an output reciprocating rod. Two sections of internal gears are arranged on the inner side wall of the transmission gear ring along the axial direction, and the two sections of internal gears are respectively meshed with the input gear and the output gear. An adjustment slider is slidably arranged in the radial chute of the output gear. The adjustment slider rotates together by the rotation of the output gear, and the output reciprocating rod is driven to reciprocate linearly by the output sliding column on the adjustment slider; the adjustment assembly includes an adjustment gear, and the adjustment gear is meshed with the output internal gear of the transmission gear ring. A spiral chute is opened at one end of the adjustment gear, and the input sliding column of the adjustment slider is slidably matched with the spiral chute; a limit separation assembly, an elastic member, and an adjustment driving assembly are also arranged inside the housing. The advantages of the present invention are as follows: the stroke of the reciprocating mechanism can be adjusted, and the adjustment process is simple, convenient, and fast.

Description

Technical Field

[0001] The present invention relates to a mechanical device, and particularly to a reciprocating mechanism with adjustable stroke. Background Art

[0002] Reciprocating mechanisms are widely used in the production process. In the prior art, after the reciprocating mechanism is produced, its stroke is fixed and cannot be adjusted in size, so the applicable occasions are limited. If the stroke is adjusted by other motion mechanisms, the conversion and adjustment operation process is very cumbersome and the adjustment accuracy is low. Summary of the Invention

[0003] The object of the present invention is to overcome the deficiencies of the prior art and provide a reciprocating mechanism with adjustable stroke, so as to realize the adjustable stroke of the reciprocating mechanism, thus being able to adapt to more occasions, and the adjustment process is simple, convenient and fast.

[0004] The present invention is realized by the following technical solutions:

[0005] A reciprocating mechanism with adjustable stroke, comprising a housing, wherein a reciprocating transmission assembly and an adjustment assembly are arranged in the housing;

[0006] The reciprocating transmission assembly includes an input gear, an output gear, a transmission gear ring, an output reciprocating rod, and an adjustment slider. The input gear, the output gear, and the transmission gear ring are all coaxially and slidably installed in the housing. Two sections of internal gears are arranged on the inner side wall of the transmission gear ring along the axial direction. The two sections of internal gears are respectively an input internal gear and an output internal gear. The input internal gear meshes with the input gear, and the output internal gear meshes with the output gear. A radial chute is formed on the output gear, and the adjustment slider is slidably arranged in the radial chute. The output reciprocating rod is slidably arranged on the housing. The axial direction of the output reciprocating rod is perpendicular to the axial direction of the output gear. A reciprocating chute is arranged in the middle section of the output reciprocating rod. The extending direction of the reciprocating chute is perpendicular to the output reciprocating rod. An output sliding column is arranged on the side of the adjustment slider facing the output gear. The output sliding column is slidably matched with the reciprocating chute. By rotating the output gear, the adjustment slider is driven to rotate together, and the output reciprocating rod is driven to reciprocate linearly along a straight line by the output sliding column on the adjustment slider;

[0007] The adjusting assembly includes an adjusting gear which is coaxially and slidably installed with the output gear and is located between the input gear and the output gear. The adjusting gear meshes with the output internal gear of the transmission gear ring. The end face of the adjusting gear facing the output gear is the adjusting end face, and a spiral chute is formed on the adjusting end face of the adjusting gear. At least one input sliding column is provided on the side of the adjusting slider facing the adjusting gear, and the input sliding column is slidably matched with the spiral chute. A limiting and separating assembly, an elastic member and an adjusting driving assembly are further arranged in the housing. The limiting and separating assembly and the elastic member are respectively located at both axial ends of the transmission gear ring. In the natural state, the transmission gear ring is elastically pressed against the limiting and separating assembly by the elastic member. The transmission gear ring is pushed by the limiting and separating assembly to move axially, so as to realize the separation of the transmission gear ring from the output gear and the input gear. At this time, the transmission gear ring is driven to rotate by the adjusting driving assembly, so as to drive the adjusting gear to rotate.

[0008] As a preferred scheme of the above reciprocating mechanism, the limiting and separating assembly includes a separating cam, a separator and a separating handle. The separating cam is fixed on an operating shaft which is rotatably installed on the housing and is coaxial with the output gear. The outer end of the operating shaft extends out of the housing and is fixed with the separating handle. The separator is slidably installed on the housing. A convex portion matched with the separating cam is arranged at the outer end of the separator, and the inner end of the separator presses against the end face of the transmission gear ring. By rotating the separating handle, the operating shaft and the separating cam are driven to rotate. Under the cooperation of the separating cam and the convex portion of the separator, the separator is driven to move along the axial direction of the output gear.

[0009] As a preferred scheme of the above reciprocating mechanism, the adjusting driving assembly includes an adjusting shaft which is rotatably installed on the housing and extends along the radial direction of the transmission gear ring. The inner end of the adjusting shaft extends into the housing and is fixedly installed with an adjusting driving gear. A ring of end face teeth is arranged at one end of the transmission gear ring close to the elastic member. In the natural state, the adjusting driving gear is disengaged from the end face teeth of the transmission gear ring. When the transmission gear ring moves towards the end close to the elastic member and is disengaged from the output gear and the input gear, the adjusting driving gear meshes with the end face teeth of the transmission gear ring.

[0010] As a preferred scheme of the above reciprocating mechanism, the input gear is fixed on an input shaft which is rotatably installed on the housing. One end of the transmission gear ring is provided with an end panel, and a central hole is formed in the end panel of the transmission gear ring. The transmission gear ring is slidably sleeved on the input shaft through the central hole of the end panel. The elastic member is slidably sleeved on the input shaft, and both ends of the elastic member are elastically pressed against the end panel of the transmission gear ring and the inner wall of the housing respectively.

[0011] As a preferred scheme of the above reciprocating mechanism, the output gear is fixed on an output shaft which passes through the central hole of the adjusting gear and is slidably installed in the input shaft hole at the end face of the input shaft.

[0012] As a preferred embodiment of the reciprocating mechanism described above, the separator includes a sliding shaft and a limiting frame. The sliding shaft is a square shaft and is slidably installed in the square groove of the housing. The outer end of the sliding shaft extends outside the housing and is fixedly connected to the protruding portion. The inner end of the sliding shaft extends into the housing and is fixedly connected to the limiting frame. The main body of the limiting frame is a cross, and the four ends of the cross are provided with limiting plates extending towards the direction of the transmission gear ring. The end portions of the four limiting plates respectively press against the end faces of the transmission gear ring.

[0013] As a preferred embodiment of the reciprocating mechanism described above, a separating cam sleeve is fixedly installed outside the housing. The separating cam sleeve covers the protruding portion of the separator. The separating cam is located inside the separating cam sleeve. The operating shaft is slidably arranged on the separating cam sleeve. The outer end of the operating shaft extends outside the separating cam sleeve and is connected to the separating handle.

[0014] As a preferred embodiment of the reciprocating mechanism described above, the elastic member is a spring.

[0015] As a preferred embodiment of the reciprocating mechanism described above, the housing is formed by the upper half housing and the lower half housing being connected in an up-and-down mating manner. Both ends of the output reciprocating rod respectively extend out from the reciprocating movement sliding grooves formed by the mating of the upper half housing and the lower half housing.

[0016] The present invention has the following advantages compared with the prior art:

[0017] In the reciprocating transmission assembly of the stroke-adjustable reciprocating mechanism provided by the present invention, through the adjustment slider arranged in the radial sliding groove of the output gear, which cooperates with the reciprocating sliding groove in the middle section of the output reciprocating rod, the output reciprocating rod can be driven to reciprocate linearly along a straight line by the rotation of the output gear. In its adjustment assembly, a coaxial adjustment gear is arranged between the input gear and the output gear, and two internal gears are arranged on the inner side wall of the transmission gear ring. One of them meshes with the input gear, and the other meshes with both the output gear and the adjustment gear at the same time. By pushing the transmission gear ring to move axially through the limit separation assembly, the separation of the transmission gear ring from the output gear and the input gear is realized. At this time, by driving the transmission gear ring to rotate through the adjustment driving assembly, the adjustment gear is driven to rotate. Then, under the cooperation of the spiral sliding groove of the adjustment gear and the input sliding column of the adjustment slider, the adjustment slider is driven to move radially along the radial sliding groove of the output gear, thereby realizing the adjustment of the reciprocating movement stroke of the output reciprocating rod, so that the reciprocating mechanism can adapt to more occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a perspective view of the present invention after removing the upper half housing.

[0019] Figure 2 is an exploded perspective view of the present invention.

[0020] Figure 3It is a three-dimensional assembly drawing of the present invention after removing the outer shell and the transmission gear ring.

[0021] Figure 4 It is a three-dimensional assembly drawing of the output reciprocating rod, output gear, and adjusting gear of the present invention.

[0022] Figure 5 It is Figure 4 the three-dimensional explosion diagram of.

[0023] Reference numerals in the figure: 1 upper half shell, 2 lower half shell, 3 input gear, 4 output gear, 5 transmission gear ring, 6 output reciprocating rod, 7 adjusting slider, 8 radial chute, 9 reciprocating movement chute, 10 reciprocating chute, 11 output slide post, 12 adjusting gear, 13 spiral chute, 14 input slide post, 15 spring, 16 separating cam, 17 separator, 18 separating handle, 19 operating shaft, 20 convex portion, 21 sliding shaft, 22 limiting frame, 23 square groove, 24 limiting plate, 25 separating cam sleeve, 26 adjusting shaft, 27 adjusting handwheel, 28 adjusting drive gear, 29 end face teeth, 30 input shaft, 31 output shaft, 32 input shaft hole. Specific embodiments

[0024] The embodiments of the present invention will be described in detail below. These embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present invention is not limited to the following embodiments.

[0025] Refer to Figures 1 to 5 , this embodiment discloses a stroke-adjustable reciprocating mechanism, including a housing, and a reciprocating transmission assembly and an adjusting assembly are provided inside the housing. The housing is formed by the upper half shell 1 and the lower half shell 2 being connected in an up-and-down mating manner.

[0026] The reciprocating transmission assembly includes an input gear 3, an output gear 4, a transmission gear ring 5, an output reciprocating rod 6, and an adjustment slider 7. The input gear 3, the output gear 4, and the transmission gear ring 5 are all coaxially and slidably installed in the housing. Two internal gears are provided along the axial direction on the inner side wall of the transmission gear ring 5. The two internal gears are respectively an input internal gear and an output internal gear. The input internal gear meshes with the input gear 3, and the output internal gear meshes with the output gear 4. A radial chute 8 is formed on the output gear 4. The adjustment slider 7 is slidably arranged in the radial chute 8. The output reciprocating rod 6 is slidably arranged on the housing. Both ends of the output reciprocating rod 6 respectively extend out from the reciprocating movement chutes 9 formed by the upper half housing 1 and the lower half housing 2. The axial direction of the output reciprocating rod 6 is perpendicular to the axial direction of the output gear 4. A reciprocating chute 10 is provided in the middle section of the output reciprocating rod 6. The extending direction of the reciprocating chute 10 is perpendicular to the output reciprocating rod 6. An output sliding column 11 is provided on one side of the adjustment slider 7 facing the output gear 4. The output sliding column 11 is slidably matched with the reciprocating chute 10. By rotating the output gear 4, the adjustment slider 7 is driven to rotate together. The output reciprocating rod 6 is driven to reciprocate linearly by the output sliding column 11 on the adjustment slider 7.

[0027] The adjustment assembly includes an adjustment gear 12. The adjustment gear 12 is coaxially and slidably installed with the output gear 4 and is located between the input gear 3 and the output gear 4. The adjustment gear 12 meshes with the output internal gear of the transmission gear ring 5. The end face of the adjustment gear 12 facing the output gear 4 is an adjustment end face. A spiral chute 13 is formed on the adjustment end face of the adjustment gear 12. At least one input sliding column 14 is provided on one side of the adjustment slider 7 facing the adjustment gear 12. The input sliding column 14 is slidably matched with the spiral chute 13. In this embodiment, two input sliding columns 14 are provided on one side of the adjustment slider 7 facing the adjustment gear 12. The two input sliding columns 14 are respectively slidably matched with two adjacent turns on the spiral chute 13. A limit separation assembly, an elastic member, and an adjustment driving assembly are further provided in the housing. The limit separation assembly and the elastic member are respectively located at both ends of the transmission gear ring 5 in the axial direction. The elastic member is a spring 15. In the natural state, the transmission gear ring 5 is elastically pressed against the limit separation assembly by the elastic member. By pushing the transmission gear ring 5 to move axially through the limit separation assembly, the transmission gear ring 5 is disengaged from the output gear 4 and the input gear 3. At this time, the transmission gear ring 5 is driven to rotate by the adjustment driving assembly, so as to drive the adjustment gear 12 to rotate.

[0028] The limit separation assembly includes a separation cam 16, a separator 17, and a separation handle 18. The separation cam 16 is fixed on an operating shaft 19. The operating shaft 19 is rotatably installed on the housing, and the operating shaft 19 is coaxial with the output gear 4. The outer end of the operating shaft 19 extends out of the housing and is fixed with the separation handle 18. The separator 17 is slidably installed on the housing. A convex portion 20 that cooperates with the separation cam 16 is provided at the outer end of the separator 17. The inner end of the separator 17 abuts against the end face of the transmission gear ring 5. By rotating the separation handle 18, the operating shaft 19 and the separation cam 16 are driven to rotate. Under the cooperation of the separation cam 16 and the convex portion 20 of the separator 17, the separator 17 is driven to move axially along the output gear 4.

[0029] The separator 17 includes a sliding shaft 21 and a limit frame 22. The sliding shaft 21 is a square shaft. The sliding shaft 21 is slidably installed in a square groove 23 of the housing. The outer end of the sliding shaft 21 extends out of the housing and is fixedly connected to the convex portion 20. The inner end of the sliding shaft 21 extends into the housing and is fixedly connected to the limit frame 22. The main body of the limit frame 22 is a cross. Limiting plates 24 extending towards the transmission gear ring 5 are provided at the four ends of the cross. The end parts of the four limiting plates 24 respectively abut against the end face of the transmission gear ring 5. A separation cam sleeve 25 is fixed on the outer side of the housing. The separation cam sleeve 25 covers the convex portion 20 of the separator 17. The separation cam 16 is located inside the separation cam sleeve 25. The operating shaft 19 is slidably arranged on the separation cam sleeve 25. The outer end of the operating shaft 19 extends out of the separation cam sleeve 25 and is connected to the separation handle 18.

[0030] The adjustment driving assembly includes an adjustment shaft 26. The adjustment shaft 26 is rotatably installed on the housing, and the adjustment shaft 26 extends along the radial direction of the transmission gear ring 5. The outer end of the adjustment shaft 26 extends out of the housing and is connected with an adjustment handwheel 27. The inner end of the adjustment shaft 26 extends into the housing and is fixedly installed with an adjustment driving gear 28. A ring of end face teeth 29 is provided at one end of the transmission gear ring 5 close to the elastic member. In the natural state, the adjustment driving gear 28 is disengaged from the end face teeth 29 of the transmission gear ring 5; when the transmission gear ring 5 moves towards the end close to the elastic member and the transmission gear ring 5 is disengaged from the output gear 4 and the input gear 3, the adjustment driving gear 28 meshes with the end face teeth 29 of the transmission gear ring 5.

[0031] The input gear 3 is fixed on an input shaft 30. The input shaft 30 is rotatably installed on the housing. The output gear 4 is fixed on an output shaft 31. The output shaft 31 passes through the central hole of the adjustment gear 12 and is slidably installed in an input shaft hole 32 on the end face of the input shaft 30. One end of the transmission gear ring 5 is provided with an end panel. A central hole is opened on the end panel of the transmission gear ring 5. The transmission gear ring 5 is slidably sleeved on the input shaft 30 through the central hole of the end panel. The elastic member is slidably sleeved on the input shaft 30. The two ends of the elastic member respectively elastically abut against the end panel of the transmission gear ring 5 and the inner wall of the housing.

[0032] The working process of the reciprocating mechanism provided in this embodiment is as follows:

[0033] For the convenience of description, in the following description, the axial direction of the input shaft 30 is the left - right direction, the axial direction of the output reciprocating rod 6 is the front - back direction, the spring 15 is located on the right side of the transmission gear ring 5, and the limit separation assembly is located on the left side of the transmission gear ring 5.

[0034] When the reciprocating mechanism is working normally, under the action of the spring 15, the transmission gear ring 5 is in the left - most limit position. At this time, the transmission gear ring 5 is meshed with the input gear 3, the adjusting gear 12, and the output gear 4. The circumferential positions of the output gear 4 and the adjusting gear 12 remain relatively unchanged. And under the radial limiting action of the spiral chute 13 on the adjusting gear 12 on the input slide post 14 of the adjusting slider 7, the radial position of the adjusting slider 7 in the radial chute 8 of the output gear 4 remains unchanged, so the distance between the output slide post 11 on the adjusting slider 7 and the axis of the output gear 4 remains unchanged. When power is input from the input shaft 30, the input shaft 30 drives the input gear 3 to rotate. When the input gear 3 rotates, the meshed transmission gear ring 5, adjusting gear 12, and output gear 4 rotate together. The adjusting slider 7 installed on the output gear 4 rotates around the axis with the output gear 4. Under the cooperation of the output slide post 11 on the adjusting slider 7 and the reciprocating chute 10 of the output reciprocating rod 6, the output slide post 11 on the adjusting slider 7 drives the output reciprocating rod 6 to perform linear reciprocating motion.

[0035] When it is necessary to adjust the stroke of the reciprocating movement of the output reciprocating rod 6, rotate the separation handle 18 to drive the separation cam 16 to rotate. Under the combined action of the separation cam 16 and the convex part 20 of the separator 17, the separator 17 moves to the right and pushes the transmission gear ring 5 to move axially to the right, so that the output internal gear of the transmission gear ring 5 is disengaged from the output gear 4, and at the same time the input internal gear is disengaged from the input gear 3. Then the output gear 4 stops rotating and the output reciprocating rod 6 stops reciprocating. At this time, the output internal gear of the transmission gear ring 5 is engaged with the adjusting gear 12, and the end face teeth 29 of the transmission gear ring 5 are engaged with the adjusting drive gear 28. Rotate the adjusting handwheel 27, and the adjusting drive gear 28 drives the transmission gear ring 5 to rotate. The transmission gear ring 5 drives the adjusting gear 12 to rotate around the axis of the output gear 4. The input sliding column 14 of the adjusting slider 7 drives the adjusting slider 7 to move radially in the radial sliding groove 8 of the output gear 4 under the action of the spiral sliding groove 13 of the adjusting gear 12, so as to change the distance between the output sliding column 11 on the adjusting slider 7 and the axis of the output gear 4, that is, the rotation radius of the output sliding column 11 of the adjusting slider 7 around the axis of the output gear 4 changes. Then reset the separation handle 18. Under the action of the spring 15, the transmission gear ring 5 resets and the separator 17 resets. Then the transmission gear ring 5 is separated from the adjusting drive gear 28, and the transmission gear ring 5 is engaged with the input gear 3, the adjusting gear 12 and the output gear 4. At this time, the adjustment of the radial position of the adjusting slider 7 in the adjustment sliding groove of the output gear 4 is completed.

[0036] After adjustment, when the input shaft 30 rotates, the input gear 3, the adjusting gear 12, the output gear 4 and the transmission gear ring 5 that are engaged together rotate together. The adjusting slider 7 installed on the output gear 4 rotates with the output gear 4. The output sliding column 11 on the adjusting slider 7 with the changed radial position drives the output reciprocating rod 6 to reciprocate, and then the stroke of the reciprocating movement of the output reciprocating rod 6 will change.

[0037] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reciprocating mechanism with adjustable stroke, comprising a housing, characterized in that: A reciprocating transmission assembly and an adjustment assembly are provided inside the housing; The reciprocating transmission assembly includes an input gear (3), an output gear (4), a transmission gear ring (5), an output reciprocating rod (6), and an adjustment slider (7). The input gear (3), output gear (4), and transmission gear ring (5) are all coaxially and slidably installed inside the housing. Two internal gears are provided along the axial direction on the inner side wall of the transmission gear ring (5). The two internal gears are respectively an input internal gear and an output internal gear. The input internal gear meshes with the input gear (3), and the output internal gear meshes with the output gear (4). A radial chute (8) is formed on the output gear (4). The adjustment slider (7) is slidably arranged in the radial chute (8). The output reciprocating rod (6) is slidably arranged on the housing. The axial direction of the output reciprocating rod (6) is perpendicular to the axial direction of the output gear (4). A reciprocating chute (10) is provided in the middle section of the output reciprocating rod (6). The extending direction of the reciprocating chute (10) is perpendicular to the output reciprocating rod (6). An output sliding column (11) is provided on the side of the adjustment slider (7) facing the output gear (4). The output sliding column (11) is slidably matched with the reciprocating chute (10). By rotating the output gear (4), the adjustment slider (7) is driven to rotate together. The output reciprocating rod (6) is driven to reciprocate linearly by the output sliding column (11) on the adjustment slider (7); The adjustment assembly includes an adjustment gear (12). The adjustment gear (12) is coaxially and slidably installed with the output gear (4) and is located between the input gear (3) and the output gear (4). The adjustment gear (12) meshes with the output internal gear of the transmission gear ring (5). The end face of the adjustment gear (12) facing the output gear (4) is an adjustment end face. A spiral chute (13) is formed on the adjustment end face of the adjustment gear (12). At least one input sliding column (14) is provided on the side of the adjustment slider (7) facing the adjustment gear (12). The input sliding column (14) is slidably matched with the spiral chute (13); A limit separation assembly, an elastic member, and an adjustment driving assembly are also provided inside the housing. The limit separation assembly and the elastic member are respectively located at both ends of the axial direction of the transmission gear ring (5). In the natural state, the transmission gear ring (5) is elastically pressed against the limit separation assembly by the elastic member; By pushing the transmission gear ring (5) to move axially through the limit separation assembly, the separation of the transmission gear ring (5) from the output gear (4) and the input gear (3) is realized. At this time, the transmission gear ring (5) is driven to rotate through the adjustment driving assembly, thereby driving the adjustment gear (12) to rotate.

2. The reciprocating mechanism with adjustable stroke according to claim 1, characterized in that: The limiting and separating assembly includes a separating cam (16), a separator (17), and a separating handle (18). The separating cam (16) is fixed on an operating shaft (19). The operating shaft (19) is rotatably installed on the housing, and the operating shaft (19) is coaxial with the output gear (4). The outer end of the operating shaft (19) extends out of the housing and is fixed with the separating handle (18). The separator (17) is slidably installed on the housing. A protruding portion (20) cooperating with the separating cam (16) is provided at the outer end of the separator (17). The inner end of the separator (17) presses against the end face of the transmission gear ring (5). By rotating the separating handle (18), the operating shaft (19) and the separating cam (16) are driven to rotate. Under the cooperation of the separating cam (16) and the protruding portion (20) of the separator (17), the separator (17) is driven to move axially along the output gear (4).

3. The reciprocating mechanism with adjustable stroke according to claim 1, characterized in that: The adjusting and driving assembly includes an adjusting shaft (26). The adjusting shaft (26) is rotatably installed on the housing, and the adjusting shaft (26) extends along the radial direction of the transmission gear ring (5). The inner end of the adjusting shaft (26) extends into the housing and is fixedly installed with an adjusting driving gear (28). A ring of end face teeth (29) is provided at one end of the transmission gear ring (5) close to the elastic member. In the natural state, the adjusting driving gear (28) is disengaged from the end face teeth (29) of the transmission gear ring (5); when the transmission gear ring (5) moves towards the end close to the elastic member and the transmission gear ring (5) is disengaged from the output gear (4) and the input gear (3), the adjusting driving gear (28) meshes with the end face teeth (29) of the transmission gear ring (5).

4. The reciprocating mechanism with adjustable stroke according to claim 1, characterized in that: The input gear (3) is fixed on an input shaft (30). The input shaft (30) is rotatably installed on the housing. One end of the transmission gear ring (5) is provided with an end panel. A central hole is opened in the end panel of the transmission gear ring (5). The transmission gear ring (5) is slidably sleeved on the input shaft (30) through the central hole of the end panel. The elastic member is slidably sleeved on the input shaft (30). The two ends of the elastic member respectively press against the end panel of the transmission gear ring (5) and the inner wall of the housing elastically.

5. The reciprocating mechanism with adjustable stroke according to claim 4, characterized in that: The output gear (4) is fixed on an output shaft (31). The output shaft (31) passes through the central hole of the adjusting gear (12) and is slidably installed in the input shaft hole (32) on the end face of the input shaft (30).

6. The reciprocating mechanism with adjustable stroke according to claim 2, characterized in that: The separator (17) includes a sliding shaft (21) and a limiting frame (22). The sliding shaft (21) is a square shaft. The sliding shaft (21) is slidably installed in the square groove (23) of the housing. The outer end of the sliding shaft (21) extends out of the housing and is fixedly connected to the protruding portion (20). The inner end of the sliding shaft (21) extends into the housing and is fixedly connected to the limiting frame (22). The main body of the limiting frame (22) is a cross. Limiting plates (24) extending towards the direction of the transmission gear ring (5) are provided at the four ends of the cross. The end parts of the four limiting plates (24) respectively press against the end face of the transmission gear ring (5).

7. The reciprocating mechanism with adjustable stroke according to claim 6, characterized in that: A separation cam sleeve (25) is fixedly arranged on the outer side of the housing. The separation cam sleeve (25) covers outside the convex part (20) of the separator (17). The separation cam (16) is located inside the separation cam sleeve (25). The operating shaft (19) is slidably arranged on the separation cam sleeve (25). The outer end of the operating shaft (19) extends outside the separation cam sleeve (25) and is connected to the separation handle (18).

8. The reciprocating mechanism with adjustable stroke according to claim 1, characterized in that: The elastic member is a spring (15).

9. The reciprocating mechanism with adjustable stroke according to claim 1, characterized in that: The housing is formed by the upper half housing (1) and the lower half housing (2) which are connected in an up-and-down mating manner. Both ends of the output reciprocating rod (6) extend out from the reciprocating movement chutes (9) formed by the mating of the upper half housing (1) and the lower half housing (2).

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