Mistake proofing device for short shaft of pin shaft
By using a fault-prevention device to detect bending of the shaft material and trigger the shaft cutting machine to stop, the problem of insufficient shaft length is solved, ensuring the quality of the shaft and the assembly quality.
Patent Information
- Application Number
- CN202520057271.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-10
AI Technical Summary
When cutting pins on a shaft cutting machine, the shaft material may be bent, causing the feeding to be delayed and resulting in insufficient pin length, which affects the assembly quality of subsequent products.
Design a fault-prevention device that uses a slider and a detection probe to detect whether the shaft material is bent. If it is bent, the shaft cutting machine will be stopped to avoid the production of short shafts.
This effectively avoids the problem of short pins caused by bending of the shaft material, ensures that the pin length is qualified, and ensures that subsequent assembly can proceed smoothly.
Smart Images
Figure CN223756011U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the chain manufacturing technical field, and in particular to a pin shaft short shaft error-proof device. BACKGROUND
[0002] The chain is a kind of transmission device composed of metal chain rings or rings, mainly used for mechanical transmission and traction. Among them, the pin shaft is the main accessory of the chain, and the pin shaft is usually cut into a set length size by a shaft cutting machine, and then processed.
[0003] If the length of the pin shaft is shorter than the set size, the pin shaft workpiece will be unqualified. However, in the process of cutting the shaft by the shaft cutting machine, the material roll of the pin shaft raw material is opened by pulling, and since the material roll has a small bending and is not easy to find, the shaft material will be stuck during the pulling process. Since the shaft material is stuck, the shaft material is not fed in time, and the pin shaft workpiece will be shorter than the set length when cutting, resulting in unqualified workpiece and affecting the subsequent product assembly work. CONTENT OF THE UTILITY MODEL
[0004] The present application discloses a pin shaft short shaft error-proof device, which aims to overcome the shortcomings of the prior art and stop the shaft cutting machine in time when the shaft material is bent, so as to avoid producing pin shaft workpieces with a length less than the set length standard.
[0005] In order to achieve the above purpose, the technical scheme of the present application is as follows:
[0006] A pin shaft short shaft error-proof device, comprising a base plate and a support seat, wherein the top end of the base plate is provided with a support seat, the top of the support seat is provided with a sliding hole penetrating in the front-rear direction, the sliding hole is slidably connected with a sliding block, the sliding block is provided with a through hole penetrating in the front-rear direction, the through hole is used to pass through the shaft material and gap fit with the shaft material, the outer wall of the sliding block is connected with the inner wall of the sliding hole through a spring, a detection probe is installed on the rear end inner wall of the sliding hole, and the detection probe is signal connected with the control system of the shaft cutting machine through a wire. In the initial state, the detection probe is opposite to the shaft material passing through the sliding block.
[0007] Preferably, the base plate is of rectangular structure, and the four corners of the base plate are respectively provided with connecting holes, the base plate is connected with the surface of the rack on one side of the shaft cutting machine through first bolts penetrating the connecting holes, and the shaft material passes through the through hole before entering the shaft cutting machine.
[0008] Preferably, the cross-sectional shape of the through hole is the same as that of the shaft material, and the inner diameter of the through hole is greater than the outer diameter of the shaft material by 0.1-0.2mm.
[0009] Preferably, the sliding hole is a stepped hole structure, comprising a large-diameter hole at the front end and a small-diameter hole integrally connected to the rear end of the large-diameter hole, the sliding block is a stepped shaft structure, comprising a large-diameter section at the front end and a small-diameter section integrally connected to the rear end of the large-diameter section, the outer surface of the large-diameter section is in clearance fit with the inner surface of the large-diameter hole, the outer surface of the small-diameter section is in clearance fit with the inner wall of the small-diameter hole, the spring is sleeved on the small-diameter section, and the front end of the spring is connected with the rear end edge of the large-diameter section, and the rear end of the spring is connected with the rear end hole wall edge of the large-diameter hole.
[0010] Preferably, the support seat is a "T" shaped structure, comprising a cuboid seat body one at the front side and a cuboid seat body two at the rear side and integrally connected with the seat body one, the width of the seat body one is greater than the width of the seat body two, the large-diameter hole is arranged at the top of the seat body one, and the small-diameter hole is arranged at the top of the seat body two.
[0011] Preferably, the inner wall of the small-diameter hole is provided with a detection probe, the detection probe is a normally closed proximity switch, and the normally closed proximity switch is used in cooperation with the small-diameter section.
[0012] Preferably, a mounting hole is formed in the top of the side wall of the seat body two, a sealing plate is mounted on the mounting hole through a second bolt, the detection probe is fixedly arranged on the inner surface of the sealing plate, a wiring hole is formed in the center of the sealing plate, and the detection probe is signal-connected with a control system through a wire penetrating through the wiring hole.
[0013] The pin shaft short shaft error-proof device has the following beneficial effects:
[0014] The pin shaft short shaft error-proof device has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the present application, the drawings used in the embodiments are briefly introduced below, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application.
[0016] Figure 1 The left view structural schematic diagram of the present application;
[0017] Figure 2 The front view structural schematic diagram of the present application;
[0018] Figure 3 The right view structural schematic diagram of the present application;
[0019] Figure 4 The top view structural schematic diagram of the present application.
[0020] 1, bottom plate; 2, support seat; 2-1, seat body one; 2-2, seat body two; 3, sliding hole; 3-1, large diameter hole; 3-2, small diameter hole; 4, sliding block; 4-1, large diameter section; 4-2, small diameter section; 4-3, through hole; 5, detection probe; 6, sealing plate; 7, mounting hole; 8, spring; 9, connecting hole; 10, wiring hole; 11, shaft material; 12, first bolt. DETAILED DESCRIPTION
[0021] The technical solutions in the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.
[0022] The following embodiments can be understood as explaining the partial structure of the present application separately, or as explaining the larger range of structure of the present application through the combination of multiple embodiments.
[0023] The pin shaft short shaft error-proof device of the present application, as shown in Figures 1-4 , comprises a bottom plate 1 and a support seat 2. The upper end of the bottom plate 1 is provided with the support seat 2. The top of the support seat 2 is provided with a sliding hole 3 penetrating in the front-rear direction. A sliding block 4 is slidably connected in the sliding hole 3. The sliding block 4 is provided with a through hole 4-3 penetrating in the front-rear direction. The through hole 4-3 is used to pass through the shaft material 11 and gap fit with the shaft material 11. The outer wall of the sliding block 4 is connected with the inner wall of the sliding hole 3 through a spring 8. A detection probe 5 is installed on the rear end inner wall of the sliding hole 3. The detection probe 5 is signal connected with the control system of the shaft cutting machine through a wire. In the initial state, the detection probe 5 is opposite to the shaft material 11 passing through the sliding block 4. Since the outer diameter of the shaft material 11 is smaller than the outer diameter of the sliding block, the shaft material does not trigger the detection probe. However, when the front end of the shaft material appears to be bent, the bent part will be stuck at the front end of the through hole, thereby driving the sliding block to slide backward. At this time, the spring is compressed, the sliding block triggers the detection probe, and the shaft cutting machine stops. At this time, the bent part can be cut off or straightened after passing through the through hole, thereby avoiding the problem of producing short pin shafts.
[0024] In the embodiment, as shown in Figures 1-4 , the bottom plate 1 is a rectangular structure. The four corners of the bottom plate 1 are respectively provided with connecting holes 9. The bottom plate 1 is connected with the surface of the rack on one side of the shaft cutting machine through the first bolt 12 passing through the connecting hole 9. The shaft material 11 passes through the through hole 4-3 before entering the shaft cutting machine, thereby realizing the pre-detection of the bent part. Since the shaft material can still be pulled by the shaft cutting machine during the detection process, the spring is compressed, so there will be no short shafts. After the cutting action, the bent part is processed, thereby avoiding the subsequent appearance of short shafts.
[0025] In this embodiment, as shown in Figures 1-4 The cross-sectional shape of the through hole 4-3 is the same as that of the shaft, and the inner diameter of the through hole is 0.1-0.2mm larger than the outer diameter of the shaft.
[0026] In this embodiment, as shown in Figures 1-4 The sliding hole 3 is a stepped hole structure, including a large-diameter hole 3-1 at the front end and a small-diameter hole 3-2 integrally connected to the rear end of the large-diameter hole 3-1. The sliding block 4 is a stepped shaft structure, including a large-diameter section 4-1 at the front end and a small-diameter section 4-2 integrally connected to the rear end of the large-diameter section 4-1. The outer surface of the large-diameter section 4-1 is in clearance fit with the inner surface of the large-diameter hole 3-1. The outer surface of the small-diameter section 4-2 is in clearance fit with the inner wall of the small-diameter hole 3-2. The spring 8 is sleeved on the small-diameter section 4-2, and the front end of the spring 8 is connected to the rear end edge of the large-diameter section 4-1, and the rear end of the spring 8 is connected to the rear end hole wall edge of the large-diameter hole 3-1, as shown in Figure 1 When the sliding block slides backward, the spring is compressed, and after the bending part of the shaft is eliminated, the spring drives the sliding block to reset.
[0027] In this embodiment, as shown in Figures 1-4 The support seat 2 is a "T" shaped structure, including a cuboid seat body one 2-1 at the front side and a cuboid seat body two 2-2 at the rear side integrally connected to the seat body one 2-1. The width of the seat body one 2-1 is greater than that of the seat body two 2-2. The large-diameter hole 3-1 is arranged at the top of the seat body one 2-1, and the small-diameter hole 3-2 is arranged at the top of the seat body two 2-2.
[0028] In this embodiment, as shown in Figures 1-4 The inner wall of the small-diameter hole 3-2 is provided with a detection probe 5. The detection probe 5 is a normally closed proximity switch. The normally closed proximity switch is used in cooperation with the small-diameter section 4-2. When triggered, the control system receives the signal and closes the shaft cutting machine. Of course, the detection probe of the present application can also be replaced by other forms of sensors that can achieve the same function.
[0029] In this embodiment, as shown in Figures 1-4 The top of the side wall of the seat body two 2-2 is provided with a mounting hole 7. The mounting hole 7 is provided with a cover plate 6 through a second bolt. The detection probe 5 is fixedly arranged on the inner surface of the cover plate 6. The center of the cover plate 6 is provided with a wiring hole 10. The detection probe 5 is connected with the control system signal through the lead wire passing through the wiring hole 10. As common sense, the detection probe should avoid interference with the small-diameter section, so the working end of the detection probe is located in the mounting hole 7.
[0030] As shown in Figure 4As shown, in the working process of the new type, the shaft material passes through the material hole, when the bending part passes, the shaft material drives the sliding block to slide backward, triggers the detection probe, and then the shaft cutting machine stops, avoiding the production of short pin shaft. Since the shaft material passes through the device provided by the new type before entering the shaft cutting machine, the early detection of shaft bending is realized. Since the spring is arranged, the normal operation of the production pin shaft workpiece can be ensured during the detection of bending, and the length of the pin shaft is qualified.
Claims
1. A mistake-proofing device for a pin stub axle, characterized by: The utility model provides a cutting shaft machine, including bottom plate, support seat, bottom plate upper end is equipped with support seat, support seat top is along the front -back direction and is penetrated with slide hole, slide hole is connected with sliding block in the slide, sliding block is equipped with the through hole of passing material along the front -back direction, the through hole of passing material is used to pass through the shaft material and is matched with the clearance of shaft material, sliding block outer wall is connected with the inner wall of slide hole through spring, the rear end inner wall of slide hole is equipped with detection probe, detection probe is connected with the control system signal of cutting shaft machine through wire, in initial state, detection probe is opposite with the shaft material of passing through sliding block.
2. A pin stub error-proofing device as in claim 1, wherein: The bottom plate is of rectangular structure, and the four corners of the bottom plate are respectively provided with connecting holes.
3. A pin stub anti-error device as claimed in claim 2, characterised in that: The through hole of passing material is of the same cross-sectional shape as the shaft material, and the inner diameter of the through hole of passing material is greater than the outer diameter of the shaft material by 0.1-0.2 mm.
4. A pin shaft stub shaft error proofing device as claimed in claim 3, characterized in that: The slide hole is of stepped hole structure, including a large-diameter hole at the front end and a small-diameter hole integrally connected to the rear end of the large-diameter hole.
5. A pin shaft stub shaft error proofing device as claimed in claim 4, characterised in that: The support seat is of T-shaped structure, including a cuboid seat body one at the front side and a cuboid seat body two integrally connected to the rear side of the seat body one.
6. A pin shaft stub shaft error proofing device as claimed in claim 5, characterized in that: The small-diameter hole is provided with a detection probe on the inner wall thereof.
7. A pin shaft stub shaft error proofing device as claimed in claim 6, characterised in that: The seat body two side wall top is provided with a mounting hole, and the mounting hole is provided with a sealing plate through a second bolt. The detection probe is fixedly arranged on the inner surface of the sealing plate.