Axis distance positioning mechanism and binding machine

Abstract

The axis distance positioning mechanism comprises a guide shaft arranged between a top plate and a base and further comprises a positioning assembly used for fixing the guide shaft to the top plate and the base, and the positioning assembly at least comprises two positioning plates; the end part of the guide shaft penetrates through the top plate and the base and is matched with the positioning assembly; and any end part of the guide shaft is matched with any two adjacent positioning plates in different ways. The guide shafts penetrate through the top plate and the base to be directly matched with the stacked and matched positioning plates in an open mode, the axis distance of the two guide shafts can be accurately adjusted without assistance of third-party accessories, and the guide shafts can be safely and stably placed between the top plate and the base; during machining, the precision of the center distance between the guide shafts and sliding blocks matched with the guide shafts, the precision of the center distance between the top plate and the guide shafts and the precision of the center distance between the base and the guide shafts do not need to be considered, and the precision of the axis distance between the adjacent guide shafts can be guaranteed only by guaranteeing the center distance between the locating plate and the guide shafts.

Description

Technical Field

[0001] The present application belongs to the technical field of auxiliary tooling for binding machines, and in particular relates to an axis center distance positioning mechanism and a binding machine. Background Art

[0002] In existing hole punching and binding machines, the guide assembly that controls the punching process is typically fixed to the top plate and base using a fixed assembly method, such as a nut that directly engages the end of the guide shaft to secure it to the top plate and base. However, this method can loosen the nut where the guide shaft end fits over time, leading to deviations in the center-to-center distances between adjacent guide shafts. This can cause the slider to slide up and down along the guide shaft, leading to jamming and directly affecting the punching and binding effect. Summary of the Invention

[0003] The present application provides an axial center distance positioning mechanism, namely a binding machine with this positioning mechanism, which solves the technical problem that the guide shafts in the existing fixed assembly method easily cause the axial center distances between adjacent guide shafts to deviate, resulting in poor punching and binding effects.

[0004] To solve at least one of the above technical problems, the technical solution adopted in this application is:

[0005] A center-to-center distance positioning mechanism includes a guide shaft placed between a top plate and a base, and is characterized in that it also includes a positioning assembly for fixing the guide shaft on the top plate and the base, and the positioning assembly includes at least two positioning plates; the end of the guide shaft passes through the top plate and the base and cooperates with the positioning assembly; and any end of the guide shaft cooperates with any two adjacent positioning plates in a different manner.

[0006] Furthermore, the diameters of the matching holes in the top plate and the base that match the guide shaft are larger than the diameter of the guide shaft.

[0007] Furthermore, the fitting manner between any end portion of the guide shaft and any two adjacent positioning plates includes interference fit and clearance fit.

[0008] Furthermore, the cooperation modes between any one of the positioning plates and the two guide shafts are different; and the cooperation between any one of the positioning plates and the guide shafts includes interference fit and clearance fit.

[0009] Furthermore, the order of the cooperation between the guide shaft and the two positioning plates on the side close to the top plate and the order of the cooperation between the guide shaft and the two positioning plates on the side close to the base may be the same or different.

[0010] Furthermore, the center distance between the through holes on the positioning plate that cooperate with the guide shaft is the same as the center distance between the guide shafts.

[0011] Furthermore, the positioning plate, the top plate and the base are all connected and fixed via positioning pins; and all the positioning pins are arranged between adjacent guide shafts.

[0012] Furthermore, it also includes a slider disposed on the two guide shafts, wherein a groove is formed in the middle of the sliding hole where the slider cooperates with the guide shaft, and the groove passes through the sliding hole and opens outward;

[0013] Preferably, an arcuate groove is further constructed on the slider, and the arcuate groove is located between the two guide shafts and is arranged on both sides of the width of the slider; a gear bar is provided on one side of the slider.

[0014] Furthermore, the top plate and the base are connected and fixed by a plurality of vertical rods, and a connecting plate for connecting the vertical rods and the top plate is provided on a side close to the guide shaft, and the connecting plate is arranged on the opposite side of the gear bar.

[0015] A binding machine is provided with the positioning mechanism described above.

[0016] The present application designs an axial center distance positioning mechanism and a binding machine, in which the guide shaft passes through the top plate and the base and directly engages with the overlapping positioning plates in an open manner. Without the assistance of third-party accessories, the axial center distance of the two guide shafts can be accurately adjusted so that the guide shaft can be safely and stably placed between the top plate and the base. During processing, there is no need to consider the accuracy of the center distance between the guide shaft and the slider it cooperates with, the center distance between the top plate and the guide shaft, and the center distance between the base and the guide shaft. It is only necessary to ensure the center distance between the positioning plate and the guide shaft to ensure the accuracy of the axial center distance between adjacent guide shafts. The assembly is simple and easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of an axis center distance positioning mechanism in this application;

[0018] Figure 2 is an exploded view of the positioning mechanism in this application;

[0019] Figure 3 is a bottom view of the positioning mechanism in this application;

[0020] Figure 4 is a front view of the positioning mechanism in this application;

[0021] Figure 5 It is a rear view of the positioning mechanism in this application.

[0022] In the picture:

[0023] 10. Top plate 20, base 30, guide shaft

[0024] 40. Positioning assembly 41. Positioning plate 1 42. Positioning plate 2

[0025] 43, positioning pin 50, slider 51, groove

[0026] 52, arc groove 60, gear bar 70, vertical pole

[0027] 80. Continuous board DETAILED DESCRIPTION

[0028] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] This embodiment proposes an axis distance positioning mechanism, such as Figure 1-5 As shown, it includes two guide shafts 30 placed between the top plate 10 and the base 20, as well as a positioning assembly 40 for fixing the guide shafts 30 on the top plate 10 and the base 20, a slider 50 cooperating with the two guide shafts 30, a gear 60 placed behind the slider 50 driven by an external motor, and a plurality of vertical rods 70 for supporting and fixing the top plate 10 and the base 20 horizontally.

[0030] like Figure 1 As shown, the positioning assembly 40 includes at least two positioning plates. In this embodiment, two positioning plates are required for the guide shaft 30 to mate with the top plate 10, and two positioning plates are required for the guide shaft to mate with the base 20. Positioning plate 1 41 is located on the side of the positioning assembly 40 closest to the top plate 10 and base 20, while positioning plate 2 42 is located on the side away from the top plate 10 and base 20. That is, each end of the guide shaft 30 is provided with positioning plate 1 41 and positioning plate 2 42, with positioning plate 1 41 positioned on the inner side and positioning plate 2 42 positioned on the outer side. The center distance between the through holes on all positioning plates that mate with the guide shafts 30 is the same as the axial center distance between the two guide shafts 30.

[0031] like Figure 2 As shown, both the top plate 10 and the base 20 are provided with mating holes through which the guide shaft 30 passes. The diameters of the mating holes are larger than the diameter of the guide shaft 30, with a diameter difference of 1-2 mm. This means that the guide shaft has a clearance fit with both the top plate 10 and the base 20. Furthermore, the center-to-center distance between the two mating holes in the top plate 10 is the same as the axial center distance of the guide shaft 30 and the center-to-center distance between the two sliding holes in the slider. This design facilitates the precise positioning of the guide shaft 30 by the positioning plate in the positioning assembly without interfering with the positioning assembly 40's mating with the guide shaft 30.

[0032] At the same time, the matching modes between any end of each guide shaft 30 and any adjacent positioning plate 1 41 and positioning plate 2 42 are different, wherein the matching modes between any end of the guide shaft 30 and any adjacent positioning plate 1 41 and positioning plate 2 42 include interference fit and clearance fit. That is to say, for the positioning plates 1 41 and 2 42 on one side of the top plate 10 that match the two guide shafts 30, one through hole thereon is an interference fit with the guide shaft 30, and the other through hole is a clearance fit with the guide shaft 30; and the center distance between the two through holes is the same as the center distance between the two guide shafts 30. At the same time, in the positioning plates 1 41 and 2 42, whether the through holes are interference fit or clearance fit with the guide shaft, they are all non-superimposed structures. That is, if the left through hole in the positioning plate 41 and the guide shaft are an interference fit, and the right through hole and the guide shaft are a clearance fit; then the left through hole in the positioning plate 42 and the guide shaft are a clearance fit, and the right through hole and the guide shaft are an interference fit; correspondingly, if the left through hole in the positioning plate 41 and the guide shaft are a clearance fit, and the right through hole and the guide shaft are an interference fit; then the left through hole in the positioning plate 42 and the guide shaft are an interference fit, and the right through hole and the guide shaft are a clearance fit.

[0033] like Figure 2 As shown, positioning plate 1 41 and positioning plate 2 42 are fixedly connected to top plate 10 and base 20, respectively, via positioning pins 43. All positioning pins 43 are positioned between adjacent guide shafts, i.e., between adjacent through-holes. The positions of the upper and lower positioning pins 43 are fixed, ensuring that the center-to-center distance between the two guide shafts 30 is precisely aligned. The positioning pins 43 can stably secure the stacked positioning plates 1 41 and 2 42 to top plate 10 and base 20, respectively, while maintaining a precise center-to-center distance between the two guide shafts 30.

[0034] like Figure 3 As shown, on one side of the base 20, the cooperation between the two guide shafts 30 and the positioning plate 1 41 and the positioning plate 2 42 is the same as the above-mentioned cooperation method, that is, if the left through hole in the positioning plate 1 41 and the guide shaft are an interference fit, and the right through hole and the guide shaft are a clearance fit; then the left through hole in the positioning plate 2 42 and the guide shaft are a clearance fit, and the right through hole and the guide shaft are an interference fit; correspondingly, if the left through hole in the positioning plate 1 41 and the guide shaft are a clearance fit, and the right through hole and the guide shaft are an interference fit; then the left through hole in the positioning plate 2 42 and the guide shaft are an interference fit, and the right through hole and the guide shaft are a clearance fit.

[0035] This open-type, cross-staggered arrangement not only allows for precise adjustment of the center-to-center distance between the two guide shafts 30, but also reduces the risk of wobble. Furthermore, without the need for third-party accessories, the center-to-center distance between the two guide shafts can be precisely adjusted, allowing the two guide shafts 30 to be safely and securely placed between the top plate 10 and the base 20. During machining, there is no need to consider the accuracy of the center-to-center distances between the guide shafts 30 and the slider 50, the center-to-center distances between the top plate 10 and the two guide shafts, or the center-to-center distances between the base 20 and the two guide shafts 30. The accuracy of the center-to-center distances between adjacent guide shafts can be guaranteed by simply ensuring the accuracy of the center-to-center distances between the first and second positioning plates 41 and 42 and the two guide shafts 30. This makes assembly simple and easy to machine.

[0036] like Figure 4 As shown, the upper and lower ends of the guide shaft 30 need to pass through the top plate 10 and the base 20, and at the same time penetrate the thickness of the positioning plate 1 41 and the positioning plate 2 42, and be protruded on the outer end surface of the positioning plate 2 42.

[0037] Furthermore, each positioning plate can have different fits with the two guide shafts 30, i.e., the fit between each positioning plate and the guide shaft 30 can include both an interference fit and a clearance fit. Specifically, for positioning plate 1 41 and positioning plate 2 42 , their through holes can have the same fit with the two guide shafts 30, i.e., if one through hole has an interference fit with one guide shaft 30, the other through hole has a clearance fit with the other guide shaft 30.

[0038] Furthermore, the order of the matching modes of the guide shaft 30 on the side close to the top plate 10 and the positioning plate 1 41 and the positioning plate 2 42 may be the same as or different from the order of the matching modes of the guide shaft 30 on the side close to the base 20 and the positioning plate 1 41 and the positioning plate 2 42. That is, on the side of the top plate 10, for the left guide shaft 30, if the matching mode of the positioning plate 1 41 and the positioning plate 2 42 is a clearance fit, then the matching mode of the positioning plate 2 42 and the positioning plate 2 42 is an interference fit; for the right guide shaft 30, the matching modes of the positioning plate 1 41 and the positioning plate 2 42 are an interference fit and a clearance fit, respectively. At this time, for the left guide shaft 30 on the side of the base 20, the matching mode order can be the same as that on the side of the top plate 10, that is, the matching mode order of the positioning plate 1 41 and the positioning plate 2 42 and the positioning plate 2 42 can be a clearance fit and an interference fit, respectively; accordingly, the matching mode order of the right guide shaft 30 and the positioning plate 1 41 and the positioning plate 2 42 is an interference fit and a clearance fit, respectively. Of course, the order of this fit can also be different, that is, the order of the fit between the positioning plate 1 41 and the positioning plate 2 42 and the left guide shaft 30 can be an interference fit and a clearance fit, respectively; correspondingly, the order of the fit between the right guide shaft 30 and the positioning plate 1 41 and the positioning plate 2 42 can be a clearance fit and an interference fit, respectively. Regardless of the fit order, as long as the positioning plates 1 41 and 2 42 that fit the same end guide shaft are arranged in a cross-staggered arrangement, the two ends of the guide shaft can be accurately and stably adjusted to the axial center distance, thereby ensuring that the slider 50 can slide freely and smoothly along the height direction of the guide shaft 30, and thus the binding operation can be guaranteed.

[0039] like Figure 2 As shown, the slider 50 is mounted on the two guide shafts 30. A groove 51 is formed in the center of the sliding hole where the slider 50 and the guide shaft 30 meet. The groove 51 extends through the sliding hole and opens outward. This structure facilitates maintenance of the slider 50. Due to the long sliding hole, lubricant can be applied not only to the sliding holes at the top and bottom of the slider 50, but also through the groove 51, ensuring that the lubricant penetrates all the sliding holes.

[0040] Furthermore, an arc groove 52 is constructed on the slider 50. The arc groove 52 is located between the two guide shafts 30 and is configured on both sides of the width of the slider 50, that is, the arc groove 52 is constructed between the two sliding holes. The groove 51 and the arc groove 52 can reduce the weight of the sliding hole 50 and save material costs.

[0041] like Figure 5 As shown, a gear bar 60 is also provided on one side of the slider 50, and the gear bar 60 is arranged along the height direction of the slide hole 50, so as to cooperate with the gear on the output end of the drive motor, thereby driving the slider 50 to move up and down along the height direction of the guide shaft 30.

[0042] like Figure 1 As shown, the top plate 10 and the base 20 are connected and fixed by a plurality of vertical rods 70. In this embodiment, there are three vertical rods 70 arranged at the same height, located at three corners of the top plate 10 and the base 20. At one corner, a half-height vertical rod 70 is provided, that is, the half-height vertical rod 70 is provided on the side closest to the guide shaft 30. It is connected to the top plate 10 via a connecting plate 80, and the connecting plate 80 is arranged on the opposite side of the gear bar 60.

[0043] A binding machine is provided with the positioning mechanism described above.

[0044] The present application designs an axial center distance positioning mechanism and a binding machine, wherein the guide shaft passes through the top plate and the base and directly engages with the overlapping positioning plates in an open manner. Without the assistance of third-party accessories, the axial center distance of the two guide shafts can be accurately adjusted so that the guide shaft can be safely and stably placed between the top plate and the base. During processing, there is no need to consider the accuracy of the center distance between the guide shaft and the slider it cooperates with, the center distance between the top plate and the guide shaft, and the center distance between the base and the guide shaft. It is only necessary to ensure the center distance between the positioning plate and the guide shaft to ensure the accuracy of the axial center distance between adjacent guide shafts. The assembly is simple and easy to process.

[0045] The above embodiments of the present application are described in detail. The contents described are only preferred embodiments of the present application and should not be considered to limit the scope of implementation of the present application. All equivalent changes and improvements made within the scope of the present application should still fall within the scope of the patent application.

Claims

1. A shaft center distance positioning mechanism, comprising a guide shaft disposed between a top plate and a base, characterized in that: It also includes a positioning assembly for fixing the guide shaft to the top plate and the base, the positioning assembly including at least two positioning plates; the end of the guide shaft passes through the top plate and the base and cooperates with the positioning assembly; and any end of the guide shaft cooperates with any two adjacent positioning plates in a different manner; The matching methods include interference fit and clearance fit; for any end of the same guide shaft, among the two positioning plates matching it: the through hole of one positioning plate has an interference fit with the guide shaft, and the through hole of the other positioning plate has a clearance fit with the guide shaft.

2. The axis center distance positioning mechanism according to claim 1, characterized in that: The diameters of the matching holes in the top plate and the base that match the guide shaft are larger than the diameter of the guide shaft.

3. The axis center distance positioning mechanism according to claim 1, characterized in that: The cooperation mode between any one of the positioning plates and the two guide shafts is different; and the cooperation between any one of the positioning plates and the guide shafts includes interference fit and clearance fit; among the two through holes on any one of the positioning plates: one of the through holes has an interference fit with one guide shaft, and the other through hole has a clearance fit with the other guide shaft.

4. The axis center distance positioning mechanism according to any one of claims 1 to 3, characterized in that: The order of the cooperation between the guide shaft and the two positioning plates on the side close to the top plate and the order of the cooperation between the guide shaft and the two positioning plates on the side close to the base may be the same or different.

5. The axis center distance positioning mechanism according to claim 4, characterized in that: The center distance between the through holes on the positioning plate that match the guide shafts is the same as the center distance between the guide shafts.

6. The axis center distance positioning mechanism according to any one of claims 1-3 and 5, characterized in that: The positioning plate, the top plate and the base are all connected and fixed via positioning pins; all the positioning pins are arranged between adjacent guide shafts.

7. The axis center distance positioning mechanism according to claim 1, characterized in that: It also includes a sliding block arranged on the two guide shafts, and a groove is constructed in the middle of the sliding hole where the sliding block cooperates with the guide shaft. The groove passes through the sliding hole and is opened outward.

8. The axis center distance positioning mechanism according to claim 7, characterized in that: An arcuate groove is also constructed on the slider. The arcuate groove is located between the two guide shafts and is arranged on both sides of the width of the slider. A gear bar is arranged on one side of the slider.

9. The axis center distance positioning mechanism according to claim 8, characterized in that: The top plate and the base are connected and fixed by a plurality of vertical rods, and a connecting plate for connecting the vertical rods and the top plate is provided on a side close to the guide shaft, and the connecting plate and the gear bar are arranged on the opposite side.

10. A binding machine, characterized in that: The device is provided with a positioning mechanism as described in any one of claims 1 to 9.

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