Stable step error probe structure
By integrating guide pins, sliding pins, and sensor step error probes into the mold, the problems of low material utilization and high mold cost in the prior art are solved, thereby improving the stability and safety of the mold.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI WALS TECH CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-12
AI Technical Summary
现有步距感应装置在模具生产中存在材料利用率低、模具制造成本高、结构易卡死及安全隐患等问题。
A stable step distance detection pin structure is adopted, integrating guide pins, sliding pins, springs and sensors in the upper mold. Through the cooperation of guide pins and sliding pins, accurate detection of step distance and accurate transmission of false signals are achieved.
It improves material utilization, reduces mold costs and manufacturing difficulty, enhances mold stability and safety, reduces adverse risks, and simplifies mold debugging and maintenance.
Smart Images
Figure CN224231002U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, and in particular to a stable step pitch detection pin structure. Background Technology
[0002] In recent years, with the increasingly fierce competition in the automotive market, major automakers have turned their attention to the body panels and related stamped parts of the car itself, collectively referred to as components, in their research and development of new models. These components are becoming more complex, stronger, and produced in larger quantities, and the quality requirements for them are also getting higher and higher. Correspondingly, the requirements for mold manufacturing are also increasing significantly. Therefore, in the mold production process, the simplification and cost reduction of molds are particularly important.
[0003] The existing progressive die pitch sensing device is installed on the outside of the strip, with a notch punched on one side as a pre-feeding notch. During production, after the strip advances one pitch, if the sensing notch is exactly aligned with the sensing device, the alarm will not be triggered, indicating that the strip advance is correct. Otherwise, it indicates an error in the strip advance, and the press will stop working after the sensing signal is transmitted. The use of the existing pitch sensing device has the following disadvantages: because the sensing notch needs to be punched in advance, the strip needs to be widened without affecting the quality of the parts, resulting in a decrease in material utilization; an additional notching punch is required, leading to an increase in the number of die steps and an increase in die manufacturing costs; the existing pitch sensing device itself is a sliding sensing device with a short-stroke spring as the return force source, which is prone to jamming during operation, causing sensing failure and even safety hazards during the parts production process.
[0004] To address this, we propose a stable step-point error probe structure. Utility Model Content
[0005] In response to the shortcomings of the existing production technology, the applicant provides a stable step pitch error detection pin structure. By installing the step pitch error detection pin structure in the upper mold, the product strip layout width is reduced, the material utilization rate is improved, and mold space is saved and the cost and mold manufacturing difficulty are reduced during the structural design process.
[0006] The technical solution adopted in this utility model is as follows:
[0007] A stable pitch error detector structure is used in a mold, which includes an upper mold and a lower mold. The pitch error detector structure includes:
[0008] Guide pins, sliding pins, springs, and sensors;
[0009] The upper mold has a first through hole and a second through hole, the diameter of the first through hole being larger than the diameter of the second through hole. The lower mold has a fourth through hole, and the center lines of the first through hole, the second through hole, and the fourth through hole coincide. The upper mold also has a third through hole that intersects and communicates with the second through hole. A step is provided between the first through hole and the second through hole.
[0010] The guide pin is movably disposed in the first through hole and the second through hole. The guide pin includes an integrally formed first section, a second section and a third section. The diameter of the first section is larger than the diameter of the second section. The first section is restricted by a step between the first through hole and the second through hole. A spring is disposed above the guide pin in the first through hole.
[0011] The second section is provided with an annular groove, the two sides of which are arc-shaped. A sliding pin is movably disposed in the third through hole. One end of the sliding pin is arc-shaped and is located in the annular groove of the second section. The sensor is located below the upper mold and is located at the other end of the sliding pin.
[0012] Its further features are:
[0013] The top of the first through hole is provided with an internal thread, and a stop plug is provided in the internal thread.
[0014] The product strip is located above the lower mold, and the product strip is provided with pitch process holes.
[0015] The sensor is fixedly connected to the upper mold via a connecting block. The upper mold is also provided with a guide tube, and the connecting block and the guide tube are respectively located on both sides of the bottom of the upper mold.
[0016] The lower mold is provided with guide posts, which are movably disposed in the guide tube.
[0017] The diameter of the second segment is larger than that of the third segment, and the second and third segments are connected by an arc segment.
[0018] The annular groove is located at one end of the second section near the first section.
[0019] Before the upper and lower molds are closed, the spring is in a compressed state and can be further compressed.
[0020] The spring is a rectangular spring.
[0021] The sensor is a press-type sensor and has rebound pressure.
[0022] The beneficial effects of this utility model are as follows:
[0023] This utility model features a compact and reasonable structure, and is easy to operate. The guide pin is movably positioned in the first and second through holes of the upper mold, while the sliding pin is movably positioned in the third through hole of the upper mold. A spring is installed above the first section within the first through hole. The sensor is located at the bottom of the connecting block, with its contact point positioned close to the sliding pin. Installing the step-pitch error detection pin structure in the upper mold reduces the product strip layout width, improves material utilization, saves mold space, and reduces costs and mold manufacturing difficulty during structural design. During mold production, it significantly extends mold life and reduces adverse risks and hidden dangers, facilitating on-site mold debugging and maintenance, and improving mold stability.
[0024] In addition, this utility model also has the following advantages:
[0025] (1) In the first state, initially, the upper and lower dies are open, and the sensor does not transmit a signal. When the die starts to work, the product strip begins to advance according to the predetermined step distance. The product strip punches out the step distance process hole according to the initial position of the die. When the step distance process hole advances one step distance with the product strip, the upper and lower dies close. The center line of the step distance process hole of the product strip coincides with the center line of the fourth through hole of the lower die. The third section of the guide pin is inserted into the step distance process hole and the fourth through hole of the lower die. Then the step distance advances correctly, and the guide pin will not drive the sliding pin to move. The sliding pin will not trigger the sensor, and the sensor will not send out a false signal.
[0026] (2) In the second state, initially, the upper and lower dies are open, and the sensor does not transmit a signal. When the die starts working, the product strip begins to advance according to the predetermined step distance. The product strip punches the step distance process hole according to the initial position of the die. When the step distance process hole advances one step distance with the product strip, the upper and lower dies close. The center line of the step distance process hole of the product strip does not coincide with the center line of the fourth through hole of the lower die, so that the third section of the guide pin cannot be inserted. When the upper and lower dies are closed, the guide pin is pushed up. The guide pin moves upward in the first and second through holes. The guide pin presses the spring upward. The annular groove of the second section of the guide pin drives the sliding pin to move towards the sensor side. The sliding pin triggers the sensor's contact point. The sensor transmits an error signal for the advance step distance. The punch press stops working, and the erroneous delivery detection is completed. After the mold is opened, the guide pin returns to its initial position under the elastic force of the spring, and the sliding pin returns to its initial position under the spring pressure of the sensor. The entire structure is restored to its initial position, preparing for a new round of error detection. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the error detection probe structure of this utility model. Figure 1 .
[0028] Figure 2 This is a schematic diagram of the error detection probe structure of this utility model. Figure 2 .
[0029] Figure 3 for Figure 1 The main view.
[0030] Figure 4 This is a schematic diagram of the error detection probe structure of this utility model after it is set in the mold.
[0031] Figure 5 for Figure 4 A cross-sectional schematic diagram.
[0032] Figure 6 for Figure 5 A schematic diagram after removing the probe structure.
[0033] Figure 7 This is a schematic diagram of the guide pin of this utility model after it is inserted into the pitch process hole of the product strip.
[0034] Among them: 100, upper mold; 110, first through hole; 120, second through hole; 130, connecting block; 140, guide tube; 150, third through hole; 200, lower mold; 210, fourth through hole; 220, guide post; 300, stop screw plug; 400, spring; 500, guide pin; 510, first section; 520, second section; 530, third section; 600, sliding pin; 700, sensor; 800, product strip. Detailed Implementation
[0035] The specific embodiments of this utility model are described below with reference to the accompanying drawings.
[0036] like Figures 1-7 As shown, a stable step pitch detection pin structure is installed in the mold. The step pitch detection pin structure includes a stop screw 300, a spring 400, a guide pin 500, a sliding pin 600, and a sensor 700.
[0037] The mold includes an upper mold 100 and a lower mold 200. The upper mold 100 is located above the lower mold 200. A guide post 220 is provided at the top of the lower mold 200. A guide tube 140 and a connecting block 130 are provided at the bottom of the upper mold 100. The guide post 220 is movably disposed in the guide tube 140.
[0038] The guide tube 140 and the connecting block 130 are respectively located on both sides of the bottom of the upper mold 100.
[0039] The upper mold 100 has a first through hole 110 and a second through hole 120, which is located below the first through hole 110. The first through hole 110 and the second through hole 120 are connected, and the diameter of the first through hole 110 is larger than the diameter of the second through hole 120. A step is provided between the first through hole 110 and the second through hole 120.
[0040] The upper mold 100 is provided with a third through hole 150 on one side of the second through hole 120, and the third through hole 150 intersects and communicates with the second through hole 120.
[0041] In one embodiment, the third through hole 150 intersects the second through hole 120 perpendicularly.
[0042] A fourth through hole 210 is provided in the lower mold 200.
[0043] In one embodiment, the center lines of the first through hole 110, the second through hole 120, and the fourth through hole 210 coincide.
[0044] In one embodiment, the center line of the second through hole 120 is perpendicular to the center line of the third through hole 150.
[0045] The guide pin 500 includes an integrally formed first section 510, a second section 520, and a third section 530. The second section 520 is located between the first section 510 and the third section 530. The diameter of the first section 510 is larger than the diameter of the second section 520, and the diameter of the second section 520 is larger than the diameter of the third section 530. The second section 520 and the third section 530 are connected by an arc-shaped section. An annular groove is provided at the end of the second section 520 near the first section 510, and the two sides of the annular groove are arc-shaped.
[0046] One end of the sliding pin 600 is curved.
[0047] The guide pin 500 is inserted into the first through hole 110. The second segment 520 of the guide pin 500 passes through the second through hole 120. The first segment 510 of the guide pin 500 is located in the first through hole 110 and is restricted by the step between the first through hole 110 and the second through hole 120. The third segment 530 of the guide pin 500 exits through the second through hole 120.
[0048] In one embodiment, before the upper mold 100 and the lower mold 200 are closed, the spring 400 is in a slightly compressed state, and the spring force of the spring 400 pushes the guide pin 500 downward, so that the first section 510 of the guide pin 500 makes contact with the step between the first through hole 110 and the second through hole 120.
[0049] In one embodiment, spring 400 is a rectangular spring.
[0050] In one embodiment, sensor 700 is a press-type sensor that has a rebound pressure and can be quickly reset.
[0051] A spring 400 is installed above the first section 510 within the first through hole 110. The top of the first through hole 110 has an internal thread that matches the retaining plug 300. The retaining plug 300 is connected to the internal thread of the first through hole 110. The guide pin 500 can move within the first through hole 110 and the second through hole 120. A sliding pin 600 is movably installed in the third through hole 150. One arc-shaped end of the sliding pin 600 is located in the annular groove of the second section 520. A sensor 700 is installed at the bottom of the connecting block 130, with the contact point of the sensor 700 positioned close to the sliding pin 600.
[0052] The step error detection probe structure in this application includes two states;
[0053] In the first state, initially, the upper mold 100 and lower mold 200 are open, and the sensor 700 does not transmit a signal. When the mold starts working, the product strip 800 begins to advance according to the predetermined step distance. The product strip 800 punches a step distance process hole according to the initial position of the mold. When the step distance process hole advances one step distance with the product strip 800, the upper mold 100 and lower mold 200 close. The center line of the step distance process hole of the product strip 800 coincides with the center line of the fourth through hole 210 of the lower mold 200. The third segment 530 of the guide pin 500 is inserted into the step distance process hole and the fourth through hole 210 of the lower mold 200. Then the step distance advances correctly, and the guide pin 500 will not drive the sliding pin 600 to move. The sliding pin 600 will not trigger the sensor 700, and the sensor 700 will not send out any false signals.
[0054] In the second state, initially, the upper mold 100 and lower mold 200 are open, and the sensor 700 does not transmit a signal. After the mold starts working, the product strip 800 begins to advance according to a predetermined step distance. The product strip 800 punches a step distance process hole based on the initial position of the mold. When the step distance process hole advances one step distance with the product strip 800, the upper mold 100 and lower mold 200 close. The center line of the step distance process hole of the product strip 800 does not coincide with the center line of the fourth through hole 210 of the lower mold 200, causing the guide pin 500 to... The third segment 530 cannot be inserted. When the upper die 100 and lower die 200 are closed, the guide pin 500 is pushed up. The guide pin 500 moves upward within the first through hole 110 and the second through hole 120, pressing the spring 400 upward. The annular groove of the second segment 520 of the guide pin 500 drives the sliding pin 600 to move towards the sensor 700. The sliding pin 600 triggers the contact of the sensor 700, and the sensor 700 transmits a progressive step error signal. The punch press stops working, and the error detection is completed. After the die is opened, the guide pin 500 returns to its initial position under the elastic force of the spring 400, and the sliding pin 600 returns to its initial position under the rebound pressure of the sensor 700. The entire structure returns to its initial position, preparing for a new round of error detection.
[0055] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.
Claims
1. A stable step-pitch error detection pin structure, applied in a mold, the mold comprising an upper mold (100) and a lower mold (200), characterized in that, The step error detection probe structure includes: Guide pin (500), sliding pin (600), spring (400) and sensor (700); The upper mold (100) is provided with a first through hole (110) and a second through hole (120), the diameter of the first through hole (110) is larger than the diameter of the second through hole (120), and the lower mold (200) is provided with a fourth through hole (210). The center lines of the first through hole (110), the second through hole (120) and the fourth through hole (210) coincide. The upper mold (100) is also provided with a third through hole (150) that intersects and communicates with the second through hole (120). A step is provided between the first through hole (110) and the second through hole (120). A guide pin (500) is movably disposed in the first through hole (110) and the second through hole (120). The guide pin (500) includes an integrally formed first section (510), a second section (520) and a third section (530). The diameter of the first section (510) is larger than the diameter of the second section (520). The first section (510) is restricted by a step between the first through hole (110) and the second through hole (120). A spring (400) is disposed above the guide pin (500) in the first through hole (110). The second section (520) is provided with an annular groove, the two sides of which are arc-shaped. A sliding pin (600) is movably disposed in the third through hole (150). One end of the sliding pin (600) is arc-shaped and is located in the annular groove of the second section (520). A sensor (700) is disposed below the upper mold (100) and is located at the other end of the sliding pin (600).
2. The stable step-point error detection probe structure as described in claim 1, characterized in that: The top of the first through hole (110) is provided with an internal thread, and a stop plug (300) is provided in the internal thread.
3. The stable step-age error detection probe structure as described in claim 1, characterized in that: A product strip (800) is provided above the lower mold (200), and the product strip (800) is provided with pitch process holes.
4. The stable step-point error detection probe structure as described in claim 3, characterized in that: The sensor (700) is fixedly connected to the upper mold (100) via a connecting block (130). The upper mold (100) is also provided with a guide tube (140). The connecting block (130) and the guide tube (140) are respectively located on both sides of the bottom of the upper mold (100).
5. The stable step error detection probe structure as described in claim 4, characterized in that: The lower mold (200) is provided with a guide post (220), which is movably disposed in the guide tube (140).
6. A stable step error detection probe structure as described in any one of claims 2-5, characterized in that: The diameter of the second segment (520) is larger than that of the third segment (530), and the second segment (520) and the third segment (530) are connected by an arc segment.
7. The stable step error detection probe structure as described in claim 1, characterized in that: The annular groove is located at one end of the second section (520) near the first section (510).
8. A stable step error detection probe structure as described in any one of claims 3, 5, and 7, characterized in that: Before the upper mold (100) and lower mold (200) are closed, the spring (400) is in a compressed state and the spring (400) can be further compressed.
9. The stable step error detection probe structure as described in claim 1, characterized in that: The spring (400) is a rectangular spring.
10. A stable step error detection probe structure as described in claim 9, characterized in that: The sensor (700) is a press-type sensor and has a rebound pressure.