A fool-proof device for cutting pins of different lengths

Abstract

This invention discloses a fault-prevention device for cutting multiple pins of different lengths. It features an insertion template and a pressure plate. The insertion template is located on the upper surface of a stationary blade and has a first opening groove in the middle. The bottom surface of the groove has a shaped through hole, the shape of which matches the workpiece's shape and its position corresponds to the pin insertion holes and solid pin insertion holes. The bottom surface of the pressure plate has a third opening groove for engaging the insertion template. The pressure plate and mounting base are locked together by locking bolts. The upper surface of the pressure plate has multiple threaded holes, with tightening screws threaded into each hole to secure the stationary blade and the insertion template. This invention, by using a shaped through hole in the insertion template, ensures correct workpiece insertion direction. A fiber optic sensor detects workpiece positioning information; only when the workpiece is correctly inserted will the cylinder be activated to cut the pins. This effectively prevents incorrect pin cutting and workpiece misalignment leading to insufficient pin length tolerance, avoiding significant cost waste due to product scrap.

Description

Technical Field

[0001] This invention relates to the field of OSA optical module manufacturing technology, and in particular to a foolproof device for cutting multiple pins of different lengths for OSA optical modules. Background Technology

[0002] OSA optical modules require cutting of multiple pins, including both tube pins and solid pins. The required cutting lengths for tube pins and solid pins differ depending on the connection. Currently, the required length for each pin is manually identified, and each pin is cut with pliers. This method is inefficient, prone to pin identification errors, and may result in cutting lengths exceeding the specification tolerances, leading to incorrect pin length cutting, product scrap, and significant cost waste. Summary of the Invention

[0003] To address the shortcomings of existing technologies that rely on manual pin identification and pin trimming with pliers, resulting in low efficiency, pin identification errors, and excessively long pins exceeding tolerance requirements, this invention provides a fault-prevention device for trimming multiple pins of varying lengths. This device uses a template with irregularly shaped through-holes that conform to the workpiece's shape, ensuring correct insertion orientation. It eliminates the need for manual pin identification, effectively preventing product scrap caused by incorrect trimming. Furthermore, a fiber optic sensor detects proper insertion; only when the insertion is confirmed will the control system activate the cylinder to trim the pins, further preventing improper insertion that could lead to insufficient trimming length and product scrap, thus avoiding significant cost waste.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A foolproof device for cutting multiple pins of different lengths includes a work platform, a moving blade, a stationary blade, a mounting base, a cylinder, and a connecting block. The mounting base is installed on the middle of the flat surface of the work platform. The cylinder is installed in the middle of the left end of the mounting base, and the piston rod end of the cylinder is connected to the connecting block. The moving blade is installed on the connecting block. The right end of the mounting base has upward-extending square protrusions on both the front and rear sides, forming a groove between the two square protrusions. The stationary blade is engaged in the groove and fixedly connected to the mounting base. The stationary blade has a through groove with a basic rectangular cross-section. The upper side wall of this through groove has an upward-extending stepped groove that is shallower on the left and deeper on the right. The thickness of the upper side wall of the stepped groove is consistent with the length of the pin and solid pin after cutting. The moving blade is a long strip with a cross-sectional shape consistent with the internal cross-sectional shape of the stationary blade. Driven by the cylinder, the moving blade can move linearly along the through groove. The upper side wall of the stationary blade has pin insertion holes corresponding to multiple pins of the workpiece on the left side of the stepped groove. The right side of the groove is provided with a solid foot insertion hole corresponding to the solid foot. The feature is that it also includes an insertion template and a pressure plate. The insertion template is a rectangular flat plate disposed on the upper surface of the stationary blade. A first opening groove penetrating the left and right sides is provided in the middle of the upper side. A shaped through hole is provided on the bottom surface of the first opening groove. The shape of this shaped through hole matches the shape of the PIN foot end of the workpiece, and its position corresponds to the position of the pin insertion hole and the solid foot insertion hole. The pressure plate is a rectangular plate. A second opening groove penetrating the upper and lower sides is provided on the right end of the upper surface, and a third opening groove penetrating the left and right sides is provided on the bottom surface, used to engage the insertion template. The front and rear bottom plates of the pressure plate are respectively attached to the upper surface of the square protrusions on the front and rear sides of the right end of the mounting base, and the pressure plate is locked and fixed to the mounting base by locking bolts. The upper surface of the pressure plate is provided with multiple evenly distributed second threaded holes. A clamping screw is threaded into each of the second threaded holes. The lower end of the clamping screw presses against the upper surface of the insertion template, used to clamp and fix the stationary blade and the insertion template.

[0006] As a further improvement to this technology, it also includes an optical fiber sensor and a control system, the control system being mounted on the front side of the cylinder; the optical fiber sensor includes a modulator, two optical fibers and two sensing heads, the modulator being connected to the sensing heads via optical fibers;

[0007] The bottom surface of the insertion template is provided with a fourth opening groove that penetrates the front and rear side walls. The fourth opening groove is connected to the left side of the irregular through hole. The two sensing heads are respectively inserted into the fourth opening grooves on the front and rear sides to sense the workpiece insertion information. The lower front and rear sides of the right end face of the pressure plate are provided with bosses extending to the right. The bottom surfaces of the front and rear bosses are provided with fifth opening grooves that penetrate the fourth opening grooves. The modulator is installed on the right side of the control system. The fifth opening groove is used to install the optical fiber connecting the modulator and the sensing head.

[0008] The cylinder and fiber optic sensor are both connected to the control system. The fiber optic sensor sends the information of the workpiece being inserted into place to the control system. After receiving the information, the control system starts the cylinder to drive the moving blade to move linearly to the left, passing through the internal groove of the stationary blade to complete the cutting action.

[0009] As a further improvement to this technology, the inner sidewall of the irregular through hole is provided with an inwardly extending rectangular protrusion. The rectangular protrusion has rectangular grooves on both the left and right sides. The rectangular protrusion is used to cooperate with the trapezoidal groove on the outer circular surface of the workpiece. The inner sidewall of the irregular through hole is provided with an inwardly extending V-shaped protrusion. The V-shaped protrusion has arc-shaped grooves on both the front and rear sides. The V-shaped protrusion is used to cooperate with the V-shaped groove on the outer circular surface of the workpiece.

[0010] As a further improvement to this technology, the fitting clearance between the moving blade and the internal through groove of the stationary blade is set to 0.05 to 0.1 mm.

[0011] As a further improvement to this technology, both the insertion template and the pressure plate are made of S136 mold steel, and the surface hardness of the insertion template reaches HRC52.

[0012] As a further improvement to this technology, a material dropping plate is provided on the right side of the mounting base, and a material dropping groove is provided in the middle of the material dropping plate corresponding to the position of the stationary knife. The bottom surface of the material dropping groove is set as an inclined surface sloping downward to the right. A waste bin is provided on the right side of the material dropping plate for collecting the PIN waste material cut off.

[0013] Compared with existing technologies, the advantages of this invention are as follows: 1. By setting irregularly shaped through holes that match the shape of the workpiece through the insertion template, the correct insertion direction of the workpiece is ensured, eliminating the need for operators to manually identify the pins for insertion, effectively preventing product scrap caused by incorrect pin cutting; 2. Fiber optic sensors are used to detect the workpiece insertion position. Only when the workpiece insertion is detected in place will the control system activate the cylinder to cut the pins, effectively preventing the workpiece from being inserted out of place and causing the pin cutting length tolerance to not meet the requirements, resulting in product scrap and avoiding huge cost waste; 3. The cylinder drives the moving blade to move linearly in the through groove inside the stationary blade, realizing the cutting of multiple pins at once. The upper end of the cross-section of the through groove inside the stationary blade is provided with a stepped groove, and the upper sidewall of the stepped groove corresponds to the insertion of the pins and solid pins, thereby ensuring that the cutting length of both pins and solid pins meets the product requirements, greatly improving production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0015] Figure 2 This is an exploded structural diagram of the insertion template, pressure plate, and mounting base according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the mounting base structure according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the static blade structure according to an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the moving blade structure in an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the plug-in template structure according to an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of the fit between the irregular through hole and the workpiece in an embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram of the pressure plate structure in an embodiment of the present invention.

[0022] In the diagram: 1. Working platform; 2. Mounting base; 201. Square boss; 202. Slot; 203. First threaded hole; 3. Connecting block; 4. Moving tool; 5. Pressure plate; 501. Second opening slot; 502. Third opening slot; 503. Boss; 504. Fifth opening slot; 505. Second threaded hole; 506. Bolt mounting hole; 6. Clamping screw; 7. Insert template; 701. First opening slot; 702. Irregular through hole; 7021. Rectangular protrusion; 7022. Rectangular groove. 7023, V-shaped protrusion, 7024, arc-shaped groove, 703, fourth opening groove, 8, stationary knife, 801, through groove, 802, stepped groove, 803, pin insertion hole, 804, solid pin insertion hole, 9, workpiece, 901, trapezoidal groove, 902, V-shaped groove, 10, blanking plate, 1001, blanking chute, 11, fiber optic sensor, 1101, modulator, 1102, fiber optic cable, 1103, sensing head, 12, control system, 13, cylinder, 14, scrap bin. Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1 to 8As shown, this embodiment of the invention is used to cut an OSA optical module with three pins and one solid pin. It includes a working platform 1, a moving blade 4, a stationary blade 8, a mounting base 2, a cylinder 13, and a connecting block 3. The mounting base 2 is mounted on the upper center of the working platform 1. The cylinder 13 is mounted on the middle of the left end of the mounting base 2, and the piston rod end of the cylinder 13 is connected to the connecting block 3. The moving blade 4 is mounted on the connecting block 3. The right end of the mounting base 2 has upwardly extending square protrusions 201 on both the front and rear sides, forming a groove 202 between the two square protrusions 201. The stationary blade 8 is engaged in the groove 202 and fixedly connected to the mounting base 2. The stationary blade 8 has an internal cross-section. The basic shape of the through groove 801 is a rectangular through groove. The upper side wall of the through groove 801 is provided with an upward-extending stepped groove 802 that is shallow on the left and deep on the right. The thickness of the upper side wall of the stepped groove 802 is the same as the length of the tube foot and solid foot after the workpiece 9 is cut off. The moving knife 4 is a long strip with the same cross-sectional shape as the internal cross-sectional shape of the stationary knife 8. Driven by the cylinder 13, the moving knife 4 can move linearly along the through groove 801. The upper side wall of the stationary knife 8 is provided with tube foot insertion holes 803 corresponding to the three tube feet of the workpiece 9 on the left side of the stepped groove 802, and solid foot insertion holes 804 corresponding to the solid foot on the right side of the stepped groove 802.

[0025] This embodiment also includes a plug-in template 7 and a pressure plate 5. The plug-in template 7 is a rectangular flat plate, set on the upper surface of the stationary knife 8. A first opening groove 701 penetrating the left and right sides is provided in the middle of the upper side. An irregular through hole 702 is provided on the bottom surface of the first opening groove 701. The shape of the irregular through hole 702 matches the shape of the pin end of the workpiece 9, and its position corresponds to the position of the pin insertion hole 803 and the solid pin insertion hole 804. The pressure plate 5 is a rectangular plate. A second opening groove 501 penetrating the upper and lower sides is provided on the upper right end of the upper surface, and a third opening groove 502 penetrating the left and right sides is provided on the lower bottom surface for snapping the plug-in template 7. The front and rear bottom plates of the pressure plate 5 are respectively connected to the mounting base. 2. The upper surfaces of the square bosses 201 on the front and rear sides of the right end are fitted together. The upper surface of the square bosses 201 is provided with a first threaded hole 203 in the middle and on the inner side. The pressure plate 5 is provided with bolt mounting holes 506 at the corresponding positions of the first threaded holes 203. The square bosses 201 and the pressure plate 5 are connected by locking bolts through the bolt mounting holes 506 and the first threaded holes 203, thereby locking and fixing the pressure plate 5 and the mounting base 2. The upper surface of the pressure plate 5 is provided with 6 second threaded holes 505 arranged in two rows. The second threaded holes 505 are internally threaded with clamping screws 6. The lower end face of the clamping screws 6 is pressed against the upper surface of the insertion template 7 to tighten and fix the stationary knife 8 and the insertion template 7.

[0026] This embodiment also includes an optical fiber sensor 11 and a control system 12. The control system 12 is mounted on the front side of the cylinder 13. The optical fiber sensor 11 includes a modulator 1101, two optical fibers 1102 and two sensing heads 1103. The modulator 1101 is connected to the sensing heads 1103 through the optical fibers 1102.

[0027] The bottom surface of the insertion template 7 is provided with a fourth opening groove 703 that penetrates the front and rear side walls. The fourth opening groove 703 is connected to the left side of the irregular through hole 702. Two sensing heads 1103 are respectively inserted into the fourth opening grooves 703 on the front and rear sides to sense the insertion information of the workpiece 9. The lower ends of the front and rear sides of the right end face of the pressure plate 5 are provided with protrusions 503 extending to the right. The bottom surfaces of the front and rear protrusions 503 are provided with a fifth opening groove 504 that penetrates the fourth opening groove 703 at the corresponding positions. The modulator 1101 is installed on the right side face of the control system 12. The fifth opening groove 504 is used to install the optical fiber 1102 that connects the modulator 1101 and the sensing head 1103.

[0028] Cylinder 13 and fiber optic sensor 11 are both connected to control system 12. Fiber optic sensor 11 sends the information of the workpiece 9 being inserted into position to control system 12. After receiving the information, control system 12 starts cylinder 13, which drives the moving blade 4 to move linearly to the left, passing through the through groove 801 inside the stationary blade 8, and completing the foot cutting action.

[0029] The purpose of using the fiber optic sensor in this embodiment is that the control system 12 will only start the cylinder 13 to drive the moving blade 4 to perform the cutting action when it receives the workpiece 9's arrival information. This effectively prevents the workpiece 9 from being improperly inserted, which would cause the cutting length tolerance to fail to meet the requirements, resulting in product scrap and avoiding huge cost waste.

[0030] Preferably, the inner wall of the irregular through hole 702 is provided with an inwardly extending rectangular protrusion 7021 on the front side. The rectangular protrusion 7021 is provided with rectangular grooves 7022 on both the left and right sides. The rectangular protrusion 7021 is used to cooperate with the trapezoidal groove 901 on the outer circular surface of the workpiece 9. The inner wall of the irregular through hole 702 is provided with an inwardly extending V-shaped protrusion 7023 on the left side. The V-shaped protrusion 7023 is provided with arc-shaped grooves 7024 on both the front and rear sides. The V-shaped protrusion 7022 is used to cooperate with the V-shaped groove 902 on the outer circular surface of the workpiece 9.

[0031] In this embodiment, the rectangular bump 7021 and the V-shaped bump cooperate with the workpiece 9 to ensure that the workpiece 9 is inserted in the correct direction. This eliminates the need for operators to manually identify the pins for insertion, effectively preventing product scrap caused by incorrect pin cutting and avoiding huge cost waste.

[0032] Preferably, the fit clearance between the moving blade 4 and the internal through groove 801 of the stationary blade 8 is set to 0.05-0.1mm, so as to ensure the tolerance of the cutting length.

[0033] Preferably, both the insert template 7 and the pressure plate 5 are made of S136 mold steel, and the surface hardness of the insert template 7 reaches HRC52. S136 mold steel has excellent corrosion resistance, polishability, good wear resistance, and machinability. It also has excellent dimensional stability during hardening, thereby improving the service life of the insert template 7 and the pressure plate 5.

[0034] Preferably, the right side of the mounting base 2 is provided with a material dropping plate 10, and the middle of the material dropping plate 10 is provided with a material dropping groove 1001 corresponding to the position of the stationary knife 8. The bottom surface of the material dropping groove 1001 is set as an inclined surface sloping downward to the right. The right side of the material dropping plate 10 is provided with a waste bin 14 for collecting the cut-off PIN waste.

[0035] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and substitutions without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A foolproof device for cutting multiple pins of different lengths, comprising a work platform, a moving blade, a stationary blade, a mounting base, a cylinder, and a connecting block. The mounting base is installed on the middle of the flat surface of the work platform. The cylinder is installed at the middle of the left end of the mounting base. The piston rod end of the cylinder is connected to the connecting block. The moving blade is installed on the connecting block. The right end of the mounting base has upwardly extending square protrusions on both the front and rear sides, forming a groove between the two square protrusions. The stationary blade is engaged in the groove and fixedly connected to the mounting base. The stationary blade has a cross-sectional shape of... A rectangular through-slot has an upward-extending, stepped groove on its upper sidewall that is shallower on the left and deeper on the right. The thickness of the upper sidewall of the stepped groove is consistent with the length of the workpiece's cut-off tube and solid foot, respectively. The moving blade is a long strip with a cross-sectional shape consistent with the internal cross-sectional shape of the stationary blade. Driven by a cylinder, the moving blade can move linearly along the through-slot. The stationary blade has tube insertion holes corresponding to multiple tubes of the workpiece on the left side of the stepped groove and solid foot insertion holes corresponding to the solid foot on the right side of the stepped groove. The feature is: It also includes a plug-in template and a pressure plate. The plug-in template is a rectangular flat plate, which is set on the upper surface of the stationary knife. The upper side has a first opening groove in the middle that runs through the left and right sides. The bottom surface of the first opening groove has an irregular through hole. The shape of the irregular through hole matches the shape of the pin end of the workpiece, and the position corresponds to the position of the tube pin insertion hole and the solid foot insertion hole. The pressure plate is a rectangular plate. The upper right end of the upper surface has a second opening groove that runs through the upper and lower sides, and the lower bottom surface has a third opening groove that runs through the left and right sides, which is used to snap the plug-in template. The front and rear bottom plates of the pressure plate are respectively attached to the upper surface of the square protrusion on the front and rear sides of the right end of the mounting base, and the pressure plate is locked and fixed to the mounting base by locking bolts. The upper surface of the pressure plate has a plurality of second threaded holes arranged in an array. The second threaded holes are internally threaded with clamping screws. The lower end of the clamping screw presses against the upper surface of the plug-in template to clamp and fix the stationary knife and the plug-in template. It also includes a fiber optic sensor and a control system, the control system being mounted on the front side of the cylinder; the fiber optic sensor includes a modulator, two optical fibers and two sensing heads, the modulator being connected to the sensing heads via optical fibers; The bottom surface of the insertion template is provided with a fourth opening groove that penetrates the front and rear side walls. The fourth opening groove is connected to the left side of the irregular through hole. The two sensing heads are respectively inserted into the fourth opening grooves on the front and rear sides to sense the workpiece insertion information. The lower front and rear sides of the right end face of the pressure plate are provided with bosses extending to the right. The bottom surfaces of the front and rear bosses are provided with fifth opening grooves that penetrate the fourth opening grooves. The modulator is installed on the right side of the control system. The fifth opening groove is used to install the optical fiber connecting the modulator and the sensing head. The cylinder and fiber optic sensor are both connected to the control system. The fiber optic sensor sends the information of the workpiece being inserted into place to the control system. After receiving the information, the control system starts the cylinder to drive the moving blade to move linearly to the left, passing through the internal groove of the stationary blade to complete the cutting action.

2. The anti-foolproof device for cutting multiple pins of different lengths according to claim 1, characterized in that: The inner wall of the irregular through hole is provided with an inwardly extending rectangular protrusion on the front side. The rectangular protrusion has rectangular grooves on both the left and right sides. The rectangular protrusion is used to cooperate with the trapezoidal groove on the outer circular surface of the workpiece. The inner wall of the irregular through hole is provided with an inwardly extending V-shaped protrusion on the left side. The V-shaped protrusion has arc-shaped grooves on both the front and rear sides. The V-shaped protrusion is used to cooperate with the V-shaped groove on the outer circular surface of the workpiece.

3. The anti-foolproof device for cutting multiple pins of different lengths according to claim 1, characterized in that: The clearance between the moving blade and the internal through groove of the stationary blade is set to 0.05-0.1 mm.

4. The anti-foolproof device for cutting multiple pins of different lengths according to claim 1, characterized in that: Both the insertion template and the pressure plate are made of S136 mold steel, and the surface hardness of the insertion template reaches HRC52.

5. A foolproof device for cutting multiple pins of different lengths according to claim 1, characterized in that: The mounting base has a material discharge plate on its right side. The material discharge plate has a material discharge groove in the middle corresponding to the stationary blade. The bottom of the material discharge groove is a sloped surface that slopes downward to the right. A waste bin is provided on the right side of the material discharge plate to collect the PIN waste material that has been cut off.

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