A through-shaft jig for connecting two single-unit rolls.

Abstract

This utility model discloses a through-shaft jig for connecting two rolled sheets, including a base with positioning seats for positioning the sheets and the shaft. The base also has two sets of X-axis adjustment assemblies located on the left and right sides of the positioning seats, respectively. Each X-axis adjustment assembly includes a left-right X-axis adjustment rail and an X-axis lead screw rotatably connected to the positioning seats. A Z-axis adjustment assembly is also located in front of the positioning seats on the base, and the Z-axis adjustment assembly further includes a Z-axis guide assembly. By setting the X-axis and Z-axis adjustment assemblies, and cooperating with a high-precision lead screw transmission mechanism and a guide rail and guide slider structure, this utility model can finely adjust the position of the ejector pin in the left-right and front-back directions, ensuring that the ejector pin can accurately align with the initial placement position of the shaft and can press the shaft completely into the rolled sheet with a stable motion trajectory, effectively improving the coaxiality and success rate of through-shaft assembly.

Description

Technical Field

[0001] This utility model relates to the field of hinge processing technology, and in particular to a through-shaft jig for connecting two single-unit rolled-up parts. Background Technology

[0002] A hinge, also known as a rotation hinge, is a mechanical device used to connect two parts and allow them to rotate relative to each other about an axis. Its typical structure consists of two leaves, each with a rolled-up portion. Relative rotation between the two leaves is achieved by inserting a shaft through the two rolled portions. In the hinge manufacturing process, reliably connecting the separately formed rolled portions via the shaft is the core process ensuring the hinge's function and performance.

[0003] Currently, this process generally relies on manual operation or simple assembly fixtures to complete the positioning of the roll and the insertion of the shaft. This traditional method has significant drawbacks: firstly, the positioning accuracy is low, and adjustment methods are limited, easily leading to eccentricity during shaft insertion; secondly, uneven force distribution between the roll and the shaft can easily cause assembly deviations. These problems not only reduce the assembly consistency and product qualification rate of the hinges but may also affect the smoothness of hinge rotation, structural rigidity, and fatigue life during use. Utility Model Content

[0004] The main purpose of this utility model is to effectively solve the problems in the background art and provide a through-shaft jig for connecting two single-unit rolls, which can achieve high precision, high efficiency and high adaptability in the through-shaft assembly of semi-finished hinges.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A through-shaft jig for connecting two single-unit rolls includes a base, on which a positioning seat for positioning the sheet and the shaft is provided;

[0007] The base is also provided with two sets of X-axis adjustment components located on the left and right sides of the positioning seat respectively. The X-axis adjustment components include X-axis adjustment rails arranged in the left and right directions and X-axis lead screws rotatably connected to the positioning seat. X-axis nut seats are fitted on the X-axis lead screws, and X-axis adjustment sliders that slide with the X-axis adjustment rails are connected to the bottom end of the X-axis nut seats.

[0008] The base is also equipped with a Z-axis adjustment assembly located in front of the positioning seat. The Z-axis adjustment assembly includes a Z-axis adjustment rail arranged in the front and back direction and a Z-axis lead screw rotatably connected to the positioning seat. A Z-axis nut seat is fitted on the Z-axis lead screw. A Z-axis adjustment slider that slides with the Z-axis adjustment rail is connected to the bottom end of the Z-axis nut seat. A telescopic frame is connected to the top end of the Z-axis nut seat. Telescopic arms are movably connected to both the left and right sides of the telescopic frame.

[0009] The Z-axis adjustment assembly also includes a Z-axis guide group, which includes a Z-axis guide slide rail connected to the top of the X-axis nut seat and arranged in the front-back direction. A Z-axis guide slider is slidably fitted on the Z-axis guide slide rail. A pin drive device is provided at the top of the Z-axis guide slider. A pin is connected to the output end of the pin drive device.

[0010] The Z-axis guide sliders in the two sets of Z-axis adjustment assemblies are respectively connected to the two telescopic arms.

[0011] Furthermore, the telescopic frame has a fixed section, and guide columns are provided on both the left and right sides of the fixed section;

[0012] The telescopic arm is L-shaped, with its lateral section slidably connected to the guide post and its longitudinal section connected to the Z-axis guide slider.

[0013] Furthermore, the lateral section of the telescopic arm is provided with a guide cavity with a large inner cavity and a small opening. The end of the guide post passes through the opening of the guide cavity, and the end is also connected to an anti-detachment head located in the inner cavity of the guide cavity.

[0014] Furthermore, the X-axis adjustment assembly also includes two sets of X-axis guide groups located on the front and rear sides of the X-axis adjustment track, respectively;

[0015] The X-axis guide assembly includes an X-axis guide slide rail, on which an X-axis guide slider connected to the Z-axis guide slide rail is slidably fitted.

[0016] Furthermore, one end of the X-axis lead screw is connected to an X-axis adjustment knob, and the other end of the X-axis lead screw is rotatably mounted on the side wall of the positioning seat.

[0017] One end of the Z-axis lead screw is connected to a Z-axis adjustment knob, and the other end of the Z-axis lead screw is rotatably mounted on the front wall of the positioning seat.

[0018] Furthermore, a mold base is detachably installed on the top of the positioning seat, and a sheet placement groove for placing sheet pieces is installed on the mold base. A shaft placement groove is provided on both sides of the sheet placement groove of the mold base.

[0019] The mold base is also equipped with a positioning and clamping mechanism for fixing the blades.

[0020] Furthermore, the mold base is provided with a limiting frame, and the front end and both sides of the limiting frame have limiting protrusions. The positioning and clamping mechanism is located behind the limiting frame.

[0021] The leaf placement slot is located in the area between the limiting frame and the positioning and pressing mechanism;

[0022] The two shaft placement slots are respectively located on the limiting protrusions at the left and right ends of the limiting frame.

[0023] Furthermore, the positioning and clamping mechanism includes a fixed base fixedly connected to the mold base and a positioning rod rotatably connected to the fixed base;

[0024] The positioning rod is fitted with a lower baffle and an upper baffle located above the lower baffle;

[0025] The positioning rod is also eccentrically fitted with a positioning pressure plate that can rotate circumferentially synchronously with the positioning rod and can move axially relative to the positioning rod. The positioning pressure plate is located between the upper baffle and the lower baffle. The positioning pressure plate has a short diameter end, a long diameter end opposite to the short diameter end, and two transition sections connecting the short diameter end and the long diameter end.

[0026] The positioning rod is also fitted with a butterfly-shaped spring piece located between the upper baffle and the positioning pressure plate. The butterfly-shaped spring piece acts on the positioning pressure plate, causing the positioning pressure plate to tend to move closer to the lower baffle.

[0027] Furthermore, the positioning plate has a guide slope at the bottom end of the transition section.

[0028] Furthermore, a rotating handle is provided at the top of the positioning rod.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. By setting up X-axis adjustment components and Z-axis adjustment components, and cooperating with high-precision lead screw transmission mechanism and guide slide rail and guide slider structure, the position of the ejector pin in the left and right and front and back directions can be finely adjusted respectively, ensuring that the ejector pin can be accurately aligned with the initial placement position of the shaft center, and can press the shaft center completely into the roll circle of the sheet with a stable motion trajectory, effectively improving the coaxiality and success rate of shaft center assembly;

[0031] 2. The design of the detachable mold base allows for flexible replacement of the appropriate mold base according to the thickness of different specifications of hinge semi-finished products, ensuring that the ejector pin is always aligned with the axis in the height direction, thus enhancing the adaptability of the equipment to different workpieces.

[0032] 3. The positioning seat is equipped with a dedicated blade placement slot and shaft placement slot, and combined with a rotatable positioning and clamping mechanism, by rotating the positioning rod, the long diameter end of the blade is pressed down smoothly under the synergistic action of the butterfly spring, providing a uniform and buffered clamping force, which not only effectively prevents the workpiece from shifting during the assembly process, but also avoids damaging the workpiece surface, and ensures the positional stability of the hinge semi-finished product during the shaft insertion process. Attached Figure Description

[0033] Figure 1 and Figure 2 This is a schematic diagram of a specific embodiment of the through-shaft jig for connecting two single-unit rolls according to the present invention.

[0034] Figure 3This is a schematic diagram of a specific embodiment of the Z-axis adjustment component in the through-shaft mandrel for connecting two single-unit rolls according to the present invention.

[0035] Figure 4 This is a structural schematic diagram of a specific embodiment of the telescopic frame in the through-shaft jig for connecting two single-unit rolls according to the present invention;

[0036] Figure 5 and Figure 6 This is a cross-sectional view of a specific embodiment of the telescopic frame in the through-shaft jig for connecting two single-unit rolls according to the present invention;

[0037] Figure 7 This is a structural schematic diagram of a specific embodiment of the through-shaft jig for connecting two single-unit rolled parts according to the present invention, which includes a mold base and a hinge semi-finished product.

[0038] Figures 8 to 10 This is a structural schematic diagram of a specific embodiment of the positioning seat and mold seat in the through-shaft jig for connecting two single-unit rolls according to the present invention;

[0039] Figure 11 This is a schematic diagram of a specific embodiment of the positioning and clamping mechanism in the through-shaft jig for connecting two single-unit rolls according to the present invention.

[0040] In the diagram: 1. Base; 2. Positioning seat; 3. Hinge semi-finished product; 31. Leaf A; 32. Leaf B; 33. Rolled A; 34. Rolled B; 35. Shaft; 36. Shaft head; 4. Ejector pin; 5. Positioning and clamping mechanism; 51. Fixed seat; 52. Positioning rod; 521. Linkage section; 522. Rotating section; 53. Lower baffle; 54. Positioning pressure plate; 55. Guide slope; 56. Rotating handle; 57. Butterfly spring; 58. Upper baffle; 59. Short diameter end; 510. Long diameter end; 511. Transition section; 6. X-axis adjustment assembly; 61. X-axis adjustment guide rail; 62. X-axis adjustment knob; 63. X 64. X-axis adjusting slider; 65. X-axis lead screw; 66. X-axis nut seat; 67. X-axis guide rail; 78. X-axis guide slider; 79. Z-axis adjusting assembly; 70. Z-axis adjusting guide rail; 71. Z-axis adjusting knob; 72. Z-axis adjusting slider; 73. Z-axis adjusting slider; 74. Z-axis lead screw; 75. Z-axis nut seat; 76. Z-axis guide rail; 77. Z-axis guide slider; 80. Telescopic frame; 81. Telescopic arm; 82. Fixed section; 83. Guide column; 84. Guide cavity; 85. Anti-detachment head; 90. Mold base; 91. Leaf placement slot; 92. Shaft placement slot; 93. Limiting frame; 94. Limiting protrusion; 10. Ejector pin drive device. Detailed Implementation

[0041] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0042] like Figures 1-11 As shown, the through-shaft jig for connecting two single-unit rolls includes a base 1, on which a positioning seat 2 for positioning the sheet and the shaft is provided;

[0043] The base 1 is also provided with two sets of X-axis adjustment components 6 located on the left and right sides of the positioning seat 2 respectively. The X-axis adjustment component 6 includes an X-axis adjustment rail 61 arranged in the left and right direction and an X-axis lead screw 64 rotatably connected to the positioning seat 2. An X-axis nut seat 65 is fitted on the X-axis lead screw 64, and an X-axis adjustment slider 63 that slides with the X-axis adjustment rail 61 is connected to the bottom end of the X-axis nut seat 65.

[0044] The base 1 is also provided with a Z-axis adjustment assembly 7 located in front of the positioning seat 2. The Z-axis adjustment assembly 7 includes a Z-axis adjustment rail 71 arranged in the front and back direction and a Z-axis lead screw 74 rotatably connected to the positioning seat 2. A Z-axis nut seat 75 is fitted on the Z-axis lead screw 74. A Z-axis adjustment slider 73 that slides with the Z-axis adjustment rail 71 is connected to the bottom end of the Z-axis nut seat 75. A telescopic frame 8 is connected to the top end of the Z-axis nut seat 75. Telescopic arms 81 are movably connected to both the left and right sides of the telescopic frame 8.

[0045] Z-axis adjustment assembly 7 also includes Z-axis guide assembly, Z-axis guide assembly includes Z-axis guide slide rail 76 connected to the top of X-axis nut seat 65 and arranged in the front and back direction, Z-axis guide slider 77 is slidably fitted on Z-axis guide slide rail 76, Z-axis guide slider 77 is provided at the top of Z-axis guide slider 77 and pin drive device 10 is provided at the output end of pin drive device 10 and pin 4 is connected to pin 4.

[0046] The Z-axis guide sliders 77 in the two sets of Z-axis adjustment components 7 are respectively connected to the two telescopic arms 81.

[0047] The hinge semi-finished product 3 applicable to this embodiment is as follows: Figure 7 As shown, the semi-finished hinge 3 includes a leaf piece A31 and a leaf piece B32. The rear end of the leaf piece A31 has a rolled circle A33, and the front end of the leaf piece B32 has two rolled circles B34 located on both sides of the rolled circle A33. The semi-finished hinge 3 also includes two shafts 35. The outer diameter of the shafts 35 is smaller than the inner diameter of the rolled circle B34 and larger than the inner diameter of the rolled circle A33.

[0048] In this embodiment, the ejector driving device 10 can be a cylinder, and the ejector 4 is used to act on the shaft 35.

[0049] In application, leaf A31 and leaf B32 are placed together on the positioning seat 2, so that the rolled circle A33 and the two rolled circles B34 are on the same axis. Then, the two shafts 35 are placed outside the two rolled circles B34. The position of the ejector pin 4 is then adjusted according to the specifications of the hinge semi-finished product 3. Specifically, the position of the ejector pin drive device 10 in the front-back direction of the positioning seat 2 can be adjusted by rotating the Z-axis lead screw 64, so that the ejector pin 4 is directly facing the shaft 35 and close to the shaft head 36. The position of the ejector pin drive device 10 in the left-right direction of the positioning seat 2 can be adjusted by rotating the X-axis lead screw 64, so that the ejector pin 4 can completely insert the shaft 35 into the rolled circles B34 and A33. After the position of the ejector pin 4 is adjusted by the X-axis adjustment component 6 and the Z-axis adjustment component 7, the two ejector pin drive devices 10 are activated simultaneously, so that the two ejector pins 4 can act inward on the shaft 35, so that they can be inserted into the rolled circles B34 and A33 in sequence. The shaft 35 is interference-fitted with the roll A33 and clearance-fitted with the roll B34. When the shaft 35 passes through the roll B34 and the roll A33, the relative rotation of the sheet A31 and the sheet B32 can be realized.

[0050] The telescopic frame 8 allows for simultaneous forward and backward movement of the two ejector pin drive devices 10; the Z-axis guide group enhances the stability of the forward and backward movement of the ejector pin drive device 10. This enables precise adjustment of the positions of the ejector pin drive device 10 and the ejector pin 4, ensuring pin insertion accuracy.

[0051] To further improve the stability of the relative rotation of sheet A31 and sheet B32, a spindle head 36 with an outer diameter larger than the inner diameter of the rolled B34 can be provided at the outer end of the spindle 35.

[0052] Preferably, the telescopic frame 8 has a fixed section 82, and guide posts 83 are provided on both the left and right sides of the fixed section 82;

[0053] The telescopic arm 81 is L-shaped, with its lateral section slidably connected to the guide post 83 and its longitudinal section connected to the Z-axis guide slider 77.

[0054] Preferably, the transverse section of the telescopic arm 81 is provided with a guide cavity 84 with a large inner cavity and a small opening. The end of the guide post 83 passes through the opening of the guide cavity 84, and the end is also connected to an anti-detachment head 85 located in the inner cavity of the guide cavity 84.

[0055] In this embodiment, the stability of the telescopic movement of the two telescopic arms 81 can be improved by setting the guide post 83 and the guide cavity 84, so as to meet the stability of the left and right movement of the ejector drive device 10.

[0056] Preferably, the X-axis adjustment assembly 6 further includes two sets of X-axis guide groups located on the front and rear sides of the X-axis adjustment track 61, respectively;

[0057] The X-axis guide assembly includes an X-axis guide slide rail 66, on which an X-axis guide slider 67 is slidably fitted and connected to the Z-axis guide slide rail 76.

[0058] In this embodiment, the stability of the left and right movement of the ejector pin drive device 10 can be improved by the cooperation of the X-axis guide slide rail 66 and the X-axis guide slider 67.

[0059] Preferably, one end of the X-axis lead screw 64 is connected to an X-axis adjustment knob 62, and the other end of the X-axis lead screw 64 is rotatably mounted on the side wall of the positioning seat 2;

[0060] One end of the Z-axis lead screw 74 is connected to the Z-axis adjustment knob 72, and the other end of the Z-axis lead screw 74 is rotatably mounted on the front wall of the positioning seat 2.

[0061] Thus, by setting the X-axis adjustment knob 62, the X-axis lead screw 64 can be rotated to adjust the left and right position of the ejector pin drive device 10; by setting the Z-axis adjustment knob 72, the Z-axis lead screw 74 can be rotated to adjust the front and rear position of the ejector pin drive device 10.

[0062] Preferably, a mold base 9 is detachably installed on the top of the positioning base 2, and a sheet placement groove 91 for placing the sheet 31 is installed on the mold base 9. A shaft placement groove 92 is provided on both sides of the sheet placement groove 91.

[0063] The mold base 9 is also equipped with a positioning and clamping mechanism 5 for fixing the leaf blade 31.

[0064] In this embodiment, the mold base 9 can be detachably connected to adjust the mold base 9 according to the thickness of the hinge semi-finished product 3, so as to ensure that the ejector pin 4 is always aligned with the corresponding axis height position.

[0065] The sheet placement slot 91 is used to place the combination of sheet A31 and sheet B32; the spindle placement slot 92 is used to place the spindle 35; the ejector pin 4 can be placed into the spindle placement slot 92 to eject the spindle 35 into the roll B34 and roll A33.

[0066] Preferably, the mold base 9 is provided with a limiting frame 93, and the front end and both left and right ends of the limiting frame 93 have limiting protrusions 94. The positioning and pressing mechanism 5 is located behind the limiting frame 93.

[0067] The sheet placement slot 91 is located in the area between the limiting frame 93 and the positioning and pressing mechanism 5;

[0068] The two shaft placement slots 92 are respectively located on the limiting protrusions 94 at the left and right ends of the limiting frame 93.

[0069] In this embodiment, the limiting frame 93 can quickly position the placement of page A31 and page B32.

[0070] Preferably, the positioning and clamping mechanism 5 includes a fixed base 51 fixedly connected to the mold base 9 and a positioning rod 52 rotatably connected to the fixed base 51;

[0071] A lower baffle 53 and an upper baffle 58 located above the lower baffle 53 are sleeved on the positioning rod 52;

[0072] The positioning rod 52 is also eccentrically sleeved with a positioning pressure plate 54 that can rotate circumferentially synchronously with the positioning rod 52 and can move axially relative to the positioning rod 52. The positioning pressure plate 54 is located between the upper baffle 58 and the lower baffle 53. The positioning pressure plate 54 has a short diameter end 59, a long diameter end 510 opposite to the short diameter end 59, and two transition sections 511 connecting the short diameter end 59 and the long diameter end 510.

[0073] The positioning rod 52 is also fitted with a butterfly-shaped spring piece 57 located between the upper baffle 58 and the positioning pressure plate 54. The butterfly-shaped spring piece 57 acts on the positioning pressure plate 54, causing the positioning pressure plate 54 to tend to move closer to the lower baffle 53.

[0074] In this embodiment, when placing sheet A31 and sheet B32, the positioning rod 52 is first rotated so that the short diameter end 59 is aligned with the limiting frame 93; when it is necessary to position sheet A31, the positioning rod 52 is rotated so that the long diameter end 510 is gradually aligned with the limiting frame 93. In this way, the long diameter end 510 can move upward to overcome the elastic effect of the butterfly spring sheet 57 to achieve the effect of pressing down sheet B32.

[0075] Among them, multiple butterfly-shaped springs 57 can be provided to act on the positioning pressure plate 54. The multiple butterfly-shaped springs 57 work together to provide a uniform and buffered clamping force, which not only ensures the firmness of the clamping, but also avoids damaging the surface of the workpiece.

[0076] The positioning rod 52 has a connecting section 521 that can move and cooperate with the positioning pressure plate 54 and a rotating section 522 that can rotate and cooperate with the fixed 51. The cross-section of the rotating section 522 can be circular, and the cross-section of the connecting section 521 can be non-circular. For example, the cross-section of the connecting section 521 can be hexagonal. In this way, when the positioning pressure plate 54 is sleeved on the connecting section 521, it can achieve the following: moving in the circumferential direction with the positioning rod 52 and moving relative to the positioning rod 52 in the axial direction.

[0077] Preferably, the positioning plate 54 has a guide slope 55 at the bottom end of the transition section 511. The guide slope 55 facilitates the rotation of the positioning rod 52 after the hinge semi-finished product 3 is placed.

[0078] To facilitate the rotation of the positioning rod 52, preferably, the top end of the positioning rod 52 is provided with a rotating handle 56.

[0079] The circuits, electronic components, and control modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0080] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A through shaft centering jig for connecting two single body roll-ends, characterized by, Includes a base (1), on which a positioning seat (2) for positioning the blades and the shaft is provided; The base (1) is also provided with two sets of X-axis adjustment components (6) located on the left and right sides of the positioning seat (2). The X-axis adjustment components (6) include an X-axis adjustment rail (61) arranged in the left and right directions and an X-axis lead screw (64) rotatably connected to the positioning seat (2). An X-axis nut seat (65) is fitted on the X-axis lead screw (64). The bottom end of the X-axis nut seat (65) is connected to an X-axis adjustment slider (63) that slides with the X-axis adjustment rail (61). The base (1) is also provided with a Z-axis adjustment assembly (7) located in front of the positioning seat (2). The Z-axis adjustment assembly (7) includes a Z-axis adjustment rail (71) arranged in the front and back direction and a Z-axis lead screw (74) rotatably connected to the positioning seat (2). A Z-axis nut seat (75) is fitted on the Z-axis lead screw (74). A Z-axis adjustment slider (73) that slides with the Z-axis adjustment rail (71) is connected to the bottom end of the Z-axis nut seat (75). A telescopic frame (8) is connected to the top end of the Z-axis nut seat (75). Telescopic arms (81) are movably connected to both the left and right sides of the telescopic frame (8). The Z-axis adjustment assembly (7) also includes a Z-axis guide assembly, which includes a Z-axis guide slide rail (76) connected to the top of the X-axis nut seat (65) and arranged in the front and back direction. A Z-axis guide slider (77) is slidably fitted on the Z-axis guide slide rail (76). A pin drive device (10) is provided at the top of the Z-axis guide slider (77), and a pin (4) is connected to the output end of the pin drive device (10). The Z-axis guide sliders (77) in the two sets of Z-axis adjustment assemblies (7) are connected to the two telescopic arms (81) respectively.

2. The through shaft centering jig for connecting two single body roll-ends according to claim 1, wherein The telescopic frame (8) has a fixed section (82), and guide columns (83) are provided on both the left and right sides of the fixed section (82); The telescopic arm (81) is L-shaped. The lateral section of the telescopic arm (81) is slidably connected to the guide post (83), and the longitudinal section of the telescopic arm (81) is connected to the Z-axis guide slider (77).

3. The through shaft centering jig for connecting two single body roll-overs according to claim 2, wherein, The telescopic arm (81) has a guide cavity (84) with a large inner cavity and a small opening in its transverse section. The end of the guide post (83) passes through the opening of the guide cavity (84) and is also connected to an anti-detachment head (85) located in the inner cavity of the guide cavity (84).

4. The through shaft centering jig for connecting two single body roll-overs according to claim 1, wherein The X-axis adjustment assembly (6) also includes two sets of X-axis guide groups located on the front and rear sides of the X-axis adjustment track (61), respectively. The X-axis guide assembly includes an X-axis guide slide rail (66), on which an X-axis guide slider (67) connected to the Z-axis guide slide rail (76) is slidably fitted.

5. The through shaft centering jig for connecting two single body roll-overs according to claim 1, wherein One end of the X-axis lead screw (64) is connected to an X-axis adjustment knob (62), and the other end of the X-axis lead screw (64) is rotatably mounted on the side wall of the positioning seat (2). One end of the Z-axis lead screw (74) is connected to a Z-axis adjustment knob (72), and the other end of the Z-axis lead screw (74) is rotatably mounted on the front wall of the positioning seat (2).

6. The through shaft centering jig for connecting two single body roll-ends according to any one of claims 1 to 5, wherein The top of the positioning seat (2) is detachably equipped with a mold seat (9), and the mold seat (9) is equipped with a sheet placement groove (91) for placing the sheet (31). The mold seat (9) is provided with a shaft placement groove (92) on both sides of the sheet placement groove (91). The mold base (9) is also provided with a positioning and clamping mechanism (5) for fixing the leaf blade (31).

7. The through shaft centering jig for connecting two single body roll-overs according to claim 6, wherein The mold base (9) is provided with a limiting frame (93), and the front end and the left and right ends of the limiting frame (93) are provided with limiting protrusions (94). The positioning and pressing mechanism (5) is located behind the limiting frame (93). The leaf placement slot (91) is located in the area between the limiting frame (93) and the positioning and pressing mechanism (5); The two said shaft placement slots (92) are located on the limiting protrusions (94) at the left and right ends of the limiting frame (93), respectively.

8. The through shaft centering jig for connecting two single body roll-overs according to claim 6, wherein, The positioning and pressing mechanism (5) includes a fixed seat (51) fixedly connected to the mold base (9) and a positioning rod (52) rotatably connected to the fixed seat (51); The positioning rod (52) is fitted with a lower baffle (53) and an upper baffle (58) located above the lower baffle (53); The positioning rod (52) is also eccentrically sleeved with a positioning pressure plate (54) that can rotate circumferentially synchronously with the positioning rod (52) and can move axially relative to the positioning rod (52). The positioning pressure plate (54) is located between the upper baffle (58) and the lower baffle (53). The positioning pressure plate (54) has a short diameter end (59), a long diameter end (510) opposite to the short diameter end (59), and two transition sections (511) connecting the short diameter end (59) and the long diameter end (510). The positioning rod (52) is also fitted with a butterfly-shaped spring piece (57) located between the upper baffle (58) and the positioning pressure plate (54). The butterfly-shaped spring piece (57) acts on the positioning pressure plate (54), causing the positioning pressure plate (54) to tend to move closer to the lower baffle (53).

9. The through shaft centering jig for connecting two single body roll-overs according to claim 8, wherein, The positioning plate (54) has a guide slope (55) at the bottom end of the transition section (511).

10. The through-shaft jig for connecting two single-unit rolled rolls according to claim 8, characterized in that, The top of the positioning rod (52) is provided with a rotating handle (56).

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