Three-way connector double-head punching device

By designing an automated double-head punching device for the three-way connector, automatic installation, pressing and punching of the three-way connector are achieved, solving the problems of low efficiency and troublesome loading and unloading in the existing technology, improving processing efficiency and reducing manual labor.

CN223368261UActive Publication Date: 2025-09-23ZHUJI LINGYU FITNESS MASCH MFG CO LTD
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Patent Information

Application Number
CN202422743006.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-12
Publication Date
2025-09-23
Estimated Expiration
2034-11-12

AI Technical Summary

Technical Problem

The existing three-way connector has low processing efficiency, troublesome loading and unloading, complicated manual operation, and it is difficult to complete the double-end drilling task efficiently.

Method used

A double-head punching device for a three-way connector is designed. It adopts an automated forward and backward moving mechanism and a pressing mechanism, combined with a punching device, to realize the automatic installation, pressing and punching of the three-way connector. It can complete the processing of two connecting blocks at one time and automatically unload the materials.

Benefits of technology

The processing efficiency of the three-way connector is improved, the manual labor is reduced, the loading and unloading is convenient, and the efficient double-head punching operation is realized.

✦ Generated by Eureka AI based on patent content.

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Abstract

The three-way connector double-head punching device comprises a machine frame, a blanking through groove is formed in the middle of the front portion of a top plate of the machine frame, side transverse beams extending front and back are fixed to the left portion and the right portion of the top face of the top plate of the machine frame, and horizontal guide plates extending front and back are fixed to the top faces of the side transverse beams. Vertical extending parts are formed on the top faces of the opposite wall faces of the two horizontal guide plates, the bottom face of a to-be-machined three-way connector is pressed against the top face of the top plate of the rack, and the left side wall and the right side wall of a main body of the to-be-machined three-way connector are tightly attached to or close to the inner side walls of the two vertical extending parts. The three-way connector can be inserted between the two vertical extending parts to be installed, automatic punching can be achieved, punching can be conducted on two connecting blocks of the three-way connector at a time, machining can be completed at a time, automatic discharging is achieved, the machining efficiency is high, assembling and disassembling are convenient, and the manual labor amount is greatly reduced.
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Description

Technical field:

[0001] The utility model relates to the technical field of hardware processing, and more specifically to a double-head punching device for a three-way connector. Background technology:

[0002] Some existing three-way connectors, such as Figure 1 As shown, connecting blocks are formed on the left and right sides of the main body, and vertical through holes need to be formed on the top surface of the connecting blocks;

[0003] The existing method is to manually place it on the drilling machine, then fix the pressure block with bolts, press the pressure block against the top surface of the corresponding part of the tee connector, tighten it and fix it, and then drill a hole. It can only process one hole at a time, and its processing efficiency is low. Moreover, after the processing is completed, it needs to be changed and fixed again. Its loading and unloading is quite troublesome and the efficiency is very low.

[0004] Moreover, after the processing is completed, the three-way connector needs to be disassembled, which makes assembly and disassembly troublesome and has poor effect. Utility model content:

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a double-head punching device for a three-way connector, which can insert the three-way connector between two vertical extensions for installation, can automatically punch holes, and can punch holes on two connecting blocks of the three-way connector at a time, completing the processing at one time and automatically unloading the materials, has high processing efficiency, is convenient for loading and unloading, and greatly reduces the amount of manual labor.

[0006] The solution of the utility model to solve the technical problem is:

[0007] A double-head punching device for a three-way connector includes a frame, a blanking slot is formed in the middle of the front portion of the top plate of the frame, side transverse beams extending forward and backward are fixed to the left and right portions of the top surface of the top plate of the frame, horizontal guide plates extending forward and backward are fixed to the top surfaces of the side transverse beams, vertical extensions are formed on the top surfaces of the opposing walls of the two horizontal guide plates, the bottom surface of the three-way connector to be processed is pressed against the top surface of the top plate of the frame, and the left and right side walls of the main body are closely attached to or close to the inner side walls of the two vertical extensions;

[0008] A positioning groove is formed in the middle of the top surface of the top plate of the frame at the rear of the blanking groove, and a lifting cylinder is fixed to the bottom surface of the top plate of the frame just below the positioning groove. The end of the push rod of the lifting cylinder extends out of the through hole in the middle of the bottom surface of the positioning groove and is fixed with a limit block, which cooperates with the positioning groove. A guide positioning block is fixed to the lower part of the front side wall of the limit block, and the guide positioning block is inserted into the vertical guide groove formed in the middle of the front side wall of the positioning groove and cooperates with the vertical guide groove;

[0009] A forward and backward moving mechanism is installed on the top surface of the two vertical extensions, an upper support frame is fixed on the main moving block of the forward and backward moving mechanism, a pressing mechanism is fixed on the upper support frame, and vertical pressing blocks are fixed on the front and rear of the bottom surface of the lifting block of the pressing mechanism, and the vertical pressing blocks correspond to the top surfaces of the front and rear of the main body of the three-way connector;

[0010] A punching rack is fixed on the top surface of the top plate of the frame at the outer side of the middle part of the two horizontal guide plates, and a punching device is installed on the punching rack. The drill bit of the punching device is facing the vertical through hole formed on the corresponding horizontal guide plate, and the vertical through hole corresponds to the connecting block formed on the left or right wall of the three-way connector to be processed.

[0011] The left and right side walls of the limit block are tightly attached to or close to the left and right side walls of the positioning groove, the left and right side walls of the guide positioning block are tightly attached to or close to the left and right side walls of the vertical guide groove, and the front side wall of the top of the vertical guide groove is formed with an upper groove extending forward. The front part of the fixed plate is in the upper groove and fixed on the bottom surface of the upper groove, and the rear part of the fixed plate is above the vertical guide groove and corresponds to the top surface of the guide positioning block.

[0012] The forward and backward moving mechanism includes a rodless cylinder and guide rails extending forward and backward. The guide rails are fixed on the top surface of the vertical extension part on one side, and the rodless cylinder is fixed on the top surface of the vertical extension part on the other side. One of the support plates of the upper support frame is fixed on the upper main moving block of the rodless cylinder, and a slider is fixed on the bottom surface of the other support plate of the upper support frame. The guide rails are inserted into the slide groove formed in the middle of the bottom surface of the slider.

[0013] The top of the lifting plate is fixed with a plurality of guide rods, and the guide rods are inserted into the guide through holes formed on the top plate of the upper support frame. The bottom surface of the first lifting plate is fixed with a lower support frame, and the middle part of the top surface of the bottom plate of the lower support frame is fixed with a secondary pressing cylinder. The bottom end of the push rod of the secondary pressing cylinder extends out of the bottom surface of the bottom plate of the lower support frame and is fixed with a lifting block extending front and back. The front and rear parts of the bottom surface of the lifting block are fixed with vertical pressing blocks, and the bottom surface of the vertical pressing block is fixed with an anti-sliding block, and the bottom surface of the anti-sliding block presses against the top surfaces of the front and rear parts of the main body of the corresponding three-way connector;

[0014] The punching device includes a main lifting cylinder fixed on the top surface of the top plate of the punching frame, the bottom end of the push rod of the main lifting cylinder extends out of the bottom surface of the corresponding top plate of the punching frame and is fixed with a processing lifting plate, the bottom surface of the processing lifting plate is fixed with a drilling motor, the bottom of the drilling motor is fixed with a drill bit, the top surface of the processing lifting plate is fixed with an upper guide rod, and the upper guide rod is inserted into the guide through hole on the top plate of the punching frame.

[0015] The outstanding effects of the utility model are:

[0016] Compared with the existing technology, it can insert the three-way connector between the two vertical extensions for installation. It can be pressed and automatically punched. It can punch holes on the two connecting blocks of the three-way connector at one time, complete the processing at one time, and automatically unload the materials. It has high processing efficiency, convenient loading and unloading, and greatly reduces the amount of manual labor. Description of the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of the processed tee connector;

[0018] Figure 2 It is a partial structural diagram of the utility model;

[0019] Figure 3 yes Figure 2 A partial enlarged view of

[0020] Figure 4 yes Figure 2 a partial enlarged view of another part;

[0021] Figure 5 This is a partial cross-sectional view of the utility model at a different angle. Specific implementation method:

[0022] For example, see Figures 1 to 5 As shown, a three-way connector double-head punching device includes a frame 10, and a blanking groove 11 is formed in the front middle part of the top plate of the frame 10. A material receiving box or material receiving barrel can be placed under the blanking groove 11 to receive products dropped from the blanking groove 11.

[0023] The left and right parts of the top surface of the top plate of the frame 10 are fixed with side transverse beams 12 extending forward and backward, and the top surface of the side transverse beams 12 is fixed with horizontal guide plates 13 extending forward and backward. The top surfaces of the opposite walls of the two horizontal guide plates 13 are formed with vertical extension parts 14. The bottom surface of the three-way connector 100 to be processed is pressed against the top surface of the top plate of the frame 10, and a self-lubricating layer 141 is fixed on the inner side wall of the vertical extension part 14. The left and right side walls of the main body of the three-way connector 100 to be processed are close to or close to the inner side walls of the two self-lubricating layers 141 (there is a spacing of less than 2 mm between the left and right side walls of the main body of the three-way connector 100 and the corresponding inner side walls of the self-lubricating layer 141 to ensure that the main body of the three-way connector 100 can move along the spacing between the two self-lubricating layers 141, and at the same time, ensure that the offset error is within a controllable range).

[0024] Furthermore, a positioning groove 15 is formed in the middle of the top surface of the top plate of the frame 10 at the rear of the blanking through groove 11, and a lifting cylinder 16 is fixed to the bottom surface of the top plate of the frame 10 just below the positioning groove 15, and the end of the push rod of the lifting cylinder 16 extends out of the through hole in the middle of the bottom surface of the positioning groove 15 and is fixed with a limiting block 17, which cooperates with the positioning groove 15, and the outer wall of the limiting block 17 is tightly attached to the corresponding inner wall of the positioning groove 15. This structure makes it possible for the limiting block 17 to be lifted and lowered without a gap between its outer wall and the corresponding inner wall of the positioning groove 15 (when the limiting block 17 is lifted, it will not be completely moved out of the positioning groove 15), so that external waste will not be stuck between the outer wall of the limiting block 17 and the inner wall of the positioning groove 15, thereby ensuring normal lifting;

[0025] A guide positioning block 171 is fixed to the lower portion of the front side wall of the limiting block 17. The guide positioning block 171 is inserted into and matched with the vertical guide groove 151 formed in the middle portion of the front side wall of the positioning groove 15.

[0026] A forward and backward moving mechanism 20 is mounted on the top surfaces of the two vertical extensions 14. An upper support frame 30 is fixed to the main moving block 21 of the forward and backward moving mechanism 20. A pressing mechanism 40 is fixed to the upper support frame 30. Vertical pressing blocks 42 are fixed to the front and rear portions of the bottom surface of the lifting block 41 of the pressing mechanism 40. The vertical pressing blocks 42 correspond to the top surfaces of the front and rear portions of the main body of the three-way connector 100.

[0027] A punching rack 50 is fixed on the top surface of the top plate of the frame 10 at the outer side of the middle part of the two horizontal guide plates 13, and a punching device is installed on the punching rack 50. The drill bit of the punching device is facing the vertical through hole 131 formed on the corresponding horizontal guide plate 13, and the vertical through hole 131 corresponds to the connecting block 101 formed on the left or right wall of the three-way connector 100 to be processed.

[0028] The left and right side walls of the guide positioning block 171 are tightly attached to or close to the left and right side walls of the vertical guide groove 151. The front side wall of the top of the vertical guide groove 151 is formed with an upper groove extending forward. The front part of the fixing plate 152 is in the upper groove and fixed on the bottom surface of the upper groove. The outer side wall of the fixing plate 152 is tightly attached to the corresponding inner side wall of the upper groove. The rear part of the fixing plate 152 is above the vertical guide groove 151 and corresponds to the top surface of the guide positioning block 171. The front wall surface of the limit block 17 is tightly attached to the rear wall surface of the fixing plate 152.

[0029] Furthermore, the forward and backward moving mechanism 20 includes a rodless cylinder 22 and a guide rail 23 extending forward and backward. The guide rail 23 is fixed on the top surface of the vertical extension part 14 on one side, and the rodless cylinder 22 is fixed on the top surface of the vertical extension part 14 on the other side. One of the support plates of the upper support frame 30 is fixed on the upper main moving block 21 of the rodless cylinder 22, and a slider 31 is fixed on the bottom surface of the other support plate of the upper support frame 30. The guide rail 23 is inserted into the slide groove formed in the middle of the bottom surface of the slider 31.

[0030] The bottom surface of the lifting plate 44 is fixed with a plurality of guide rods, which are inserted into the guide through holes formed on the top plate of the upper support frame 30. The bottom surface of the first-stage lifting plate 44 is fixed with a lower support frame 45, and the middle part of the top surface of the bottom plate of the lower support frame 45 is fixed with a secondary pressing cylinder 46. The bottom end of the push rod of the secondary pressing cylinder 46 extends out of the bottom surface of the bottom plate of the lower support frame 45 and is fixed with a lifting block 41 extending front and back. The front and rear parts of the bottom surface of the lifting block 41 are fixed with vertical pressing blocks 42. The bottom surface of the vertical pressing block 42 is fixed with an anti-sliding block 421. The bottom surface of the anti-sliding block 421 presses against the top surface of the front and rear parts of the main body of the corresponding three-way connector 100.

[0031] An upper guide rod is fixed to the top surface of the lifting block 41 , and the upper guide rod is inserted into a vertical guide through hole formed on the bottom plate of the lower support frame 45 .

[0032] Furthermore, vertical support columns 60 are fixed on the top surfaces of the vertical extension portions 14 at the front and rear of the rodless cylinder 22, and limiting connection blocks 61 are fixed on the upper relative wall surfaces of the two vertical support columns 60. A second proximity switch 2 is fixed on the two limiting connection blocks 61, and the sensing ends of the two second proximity switches 2 extend out of the inner end surfaces of the corresponding limiting connection blocks 61, and are inserted into the middle through holes of the elastic blocks 62 fixed on the inner end surfaces of the corresponding limiting connection blocks 61. The sensing ends of the second proximity switches 2 do not extend out of the outer end of the middle through hole, and the sensing ends of the second proximity switch 2 face the front side wall or rear side wall of the corresponding support plate of the upper support frame 30.

[0033] The punching device includes a main lifting cylinder 51 fixed on the top surface of the top plate of the punching frame 50. The bottom end of the push rod of the main lifting cylinder 51 extends out of the bottom surface of the corresponding top plate of the punching frame 50 and is fixed with a processing lifting plate 52. The bottom surface of the processing lifting plate 52 is fixed with a drilling motor 53, and the bottom of the drilling motor 53 is fixed with a drill bit. The top surface of the processing lifting plate 52 is fixed with an upper guide rod, and the upper guide rod is inserted into the guide through hole on the top plate of the punching frame 50.

[0034] A lower groove is formed on the top surface of the horizontal guide plate 13 corresponding to the processing lifting plate 52 , and a vertical through hole 131 is formed on the bottom surface of the lower groove.

[0035] An elastic anti-collision sheet 3 is fixed on the top surface of the outer side of the lower groove, and the processing lifting plate 52 faces the corresponding elastic anti-collision sheet 3.

[0036] All cylinders in this embodiment are connected to the corresponding control valves of the pneumatic system through connecting pipes, and their operation is controlled by the pneumatic system. The pneumatic system includes components such as an air pump, an air storage tank, a control valve (which is a solenoid valve). It is a conventional structure and will not be described in detail here. All electrical equipment in its pneumatic system and all electrical equipment in this embodiment are electrically connected to the control host through electrical connecting lines and are controlled by the control host. It is a conventional structure and will not be described in detail here.

[0037] When the present embodiment is in use, the main body of the three-way connector 100 to be processed is extended from the rear into between the two self-lubricating layers 141 and moved forward so that the front section is pressed against the rear side wall of the limit block 17. It is generally impossible to push it any further manually, indicating that it has moved into place. At this time, the rear wall surface of the corresponding support plate of the upper support frame 30 is pressed against the front wall surface of the elastic block 62 at the rear and is sensed by the sensing end of the second proximity switch 2 at the rear, indicating that the rear upper support frame 30 is now directly above the main body of the installed three-way connector 100. At this time, the operation button on the control host is manually controlled (pressed once, the corresponding processing is completed once), and the push rod of the upper pressing cylinder 43 is pushed. At the same time, the push rod of the secondary pressing cylinder 46 is also pushed, so that the bottom surface of the anti-sliding block 421 is pressed against the top surface of the front and rear of the main body of the corresponding three-way connector 100, pressing it. At this time, the vertical through hole 131 and the three-way connector to be processed are aligned. The connecting blocks 101 formed on the left or right wall of the through-connector 100 correspond to each other up and down, and then, the drilling motor 53 is operated and the push rod of the main lifting cylinder 51 is pushed, so that the drill bit rotates and descends to drill the middle of the corresponding connecting block 101. At this time, a first vertical through hole is formed on the top plate of the frame 10 directly below the drill bit. When the drill bit descends, it passes through the bottom surface of the connecting block 101 and can be in the corresponding first vertical through hole, and its waste can also fall from the first vertical through hole. Moreover, a plurality of discharge slots are formed on the inner side walls of the bottom of the two side transverse beams 12, and the waste in the processing can be discharged from the discharge slots to prevent the waste from accumulating on the top surface of the top plate of the frame 1 between the two side transverse beams 12. Moreover, after a certain period of use, when the equipment stops running, the waste and water can be discharged from the discharge slots by flushing the top surface of the top plate of the frame 1 between the two side transverse beams 12.

[0038] After the machining is completed, the push rod of the main lifting cylinder 51 retracts and the drilling motor 53 stops running. Then, the push rod of the secondary pressing cylinder 46 retracts, so that the bottom surface of the anti-sliding block 421 no longer presses against the front and rear top surfaces of the main body of the corresponding three-way connector 100. Then, the push rod of the lifting cylinder 16 retracts, causing the limit block 17 to descend. After it falls into place, the top surface of the limit block 17 is flush with the top surface of the top plate of the frame 10. Then, the main moving block 21 of the rodless cylinder 22 moves forward, so that the vertical pressing block 42 at the rear pushes the vertical connector in the middle of the top surface of the three-way connector 100 to move forward until it is in the blanking slot 11 and automatically falls into the material receiving box or material receiving barrel below to achieve material receiving, while the main moving block 21 continues to move forward until the sensing end of the second proximity switch 2 at the front senses the front side wall of the corresponding support plate of the upper support frame 30, indicating that the main moving block 21 has moved forward into place and the machining is completed.

[0039] Then, the push rod of the lifting cylinder 16 pushes, so that the limit block 17 is lifted, and it is pressed against the bottom surface of the fixed plate 152 by the top surface of the guide positioning block 171 to achieve limiting. At this time, the bottom of the limit block 17 is still in the positioning groove 15. At the same time, the main moving block 21 of the rodless cylinder 22 moves backward, so that the rear wall surface of the corresponding support plate of the upper support frame 30 is against the front wall surface of the elastic block 62 at the rear, and is sensed by the sensing end of the second proximity switch 2 at the rear, indicating that it has returned to its position.

[0040] Then, the new three-way connector 100 that needs to be processed is placed between the two self-lubricating layers 141, and then pressed against the rear wall surface of the limit block 17. At this time, press the operation button of the control host to process the three-way connector 100 at this time. The processing is convenient, effective, efficient, and greatly reduces the amount of manual labor.

[0041] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

Claims

1. A three-way connector double-end punching device, comprising a frame (10), characterized in that: A blanking slot (11) is formed in the middle of the front portion of the top plate of the frame (10), side transverse beams (12) extending forward and backward are fixed to the left and right portions of the top surface of the top plate of the frame (10), horizontal guide plates (13) extending forward and backward are fixed to the top surface of the side transverse beams (12), vertical extension portions (14) are formed on the top surfaces of the opposite walls of the two horizontal guide plates (13), the bottom surface of the three-way connector (100) to be processed is pressed against the top surface of the top plate of the frame (10), and the left and right side walls of the main body thereof are in close contact with or close to the inner side walls of the two vertical extension portions (14); A positioning groove (15) is formed in the middle of the top surface of the top plate of the frame (10) at the rear of the blanking groove (11), and a lifting cylinder (16) is fixed to the bottom surface of the top plate of the frame (10) directly below the positioning groove (15). The end of the push rod of the lifting cylinder (16) extends out of the through hole in the middle of the bottom surface of the positioning groove (15) and is fixed with a limiting block (17). The limiting block (17) cooperates with the positioning groove (15). A guide positioning block (171) is fixed to the lower part of the front side wall of the limiting block (17). The guide positioning block (171) is inserted into the vertical guide groove (151) formed in the middle of the front side wall of the positioning groove (15) and cooperates with the vertical guide groove (151); A front-to-back moving mechanism (20) is installed on the top surface of the two vertical extension parts (14); an upper support frame (30) is fixed on the main moving block (21) of the front-to-back moving mechanism (20); a pressing mechanism (40) is fixed on the upper support frame (30); vertical pressing blocks (42) are fixed on the front and rear parts of the bottom surface of the lifting block (41) of the pressing mechanism (40); the vertical pressing blocks (42) correspond to the top surfaces of the front and rear parts of the main body of the three-way connector (100); A punching rack (50) is fixed on the top surface of the top plate of the frame (10) at the outer side of the middle part of the two horizontal guide plates (13), and a punching device is installed on the punching rack (50). The drill bit of the punching device faces the vertical through hole (131) formed on the corresponding horizontal guide plate (13), and the vertical through hole (131) corresponds to the connection block (101) formed on the left or right wall of the three-way connector (100) to be processed.

2. A three-way connector double-end punching device according to claim 1, characterized in that: A self-lubricating layer (141) is fixed on the inner side wall of the vertical extension portion (14), and the left and right side walls of the main body of the three-way connector (100) to be processed are closely attached to or close to the inner side walls of the two self-lubricating layers (141).

3. The double-end punching device for a three-way connector according to claim 1, characterized in that: The left and right side walls of the guide positioning block (171) are in close contact with or close to the left and right side walls of the vertical guide groove (151); the front side wall of the top of the vertical guide groove (151) is formed with an upper groove extending forward; the front part of the fixing plate (152) is located in the upper groove and fixed on the bottom surface of the upper groove; the rear part of the fixing plate (152) is located above the vertical guide groove (151) and corresponds to the top surface of the guide positioning block (171).

4. A three-way connector double-end punching device according to claim 1, characterized in that: The forward and backward moving mechanism (20) includes a rodless cylinder (22) and a guide rail (23) extending forward and backward, wherein the guide rail (23) is fixed on the top surface of the vertical extension portion (14) on one side, and the rodless cylinder (22) is fixed on the top surface of the vertical extension portion (14) on the other side. One of the support plates of the upper support frame (30) is fixed on the main moving block (21) on the upper part of the rodless cylinder (22), and a slider (31) is fixed on the bottom surface of the other support plate of the upper support frame (30). The guide rail (23) is inserted into a slide groove formed in the middle part of the bottom surface of the slider (31).

5. The double-end punching device for a three-way connector according to claim 1, characterized in that: The pressing mechanism (40) includes an upper pressing cylinder (43) fixed to the middle of the top surface of the top plate of the upper support frame (30), the bottom end of the push rod of the upper pressing cylinder (43) extends out of the bottom surface of the top plate of the upper support frame (30) and is fixed with a first-level lifting plate (44), a plurality of guide rods are fixed to the top surface of the first-level lifting plate (44), the guide rods are inserted into the guide through holes formed on the top plate of the upper support frame (30), the bottom surface of the first-level lifting plate (44) is fixed with a lower support frame (45), and the lower support frame (45) is fixed to the bottom surface of the lower support frame (45). 5) is fixed to the middle of the top surface of the bottom plate of the lower support frame (45), the bottom end of the push rod of the secondary pressing cylinder (46) extends out of the bottom surface of the bottom plate of the lower support frame (45) and is fixed with a lifting block (41) extending forward and backward, the front and rear parts of the bottom surface of the lifting block (41) are fixed with vertical pressing blocks (42), the bottom surface of the vertical pressing block (42) is fixed with an anti-sliding block (421), and the bottom surface of the anti-sliding block (421) is pressed against the top surface of the front and rear parts of the main body of the corresponding three-way connector (100); An upper guide rod is fixed on the top surface of the lifting block (41), and the upper guide rod is inserted into a vertical guide through hole formed on the bottom plate of the lower support frame (45).

6. A three-way connector double-end punching device according to claim 4, characterized in that: Vertical support columns (60) are fixed on the top surfaces of the vertical extensions (14) at the front and rear of the rodless cylinder (22), and limit connection blocks (61) are fixed on the upper relative wall surfaces of the two vertical support columns (60). Second proximity switches (2) are fixed on the two limit connection blocks (61), and the sensing ends of the two second proximity switches (2) extend out of the inner end surfaces of the corresponding limit connection blocks (61) and are inserted into the middle through holes of the elastic blocks (62) fixed on the inner end surfaces of the corresponding limit connection blocks (61). The sensing ends of the second proximity switches (2) face the front side wall or the rear side wall of the corresponding support plate of the upper support frame (30).

7. The double-end punching device for a three-way connector according to claim 1, characterized in that: The punching device comprises a main lifting cylinder (51) fixed on the top surface of the top plate of the punching frame (50), the bottom end of the push rod of the main lifting cylinder (51) extends out of the bottom surface of the corresponding top plate of the punching frame (50) and is fixed with a processing lifting plate (52), the bottom surface of the processing lifting plate (52) is fixed with a drilling motor (53), the bottom of the drilling motor (53) is fixed with a drill bit, the top surface of the processing lifting plate (52) is fixed with an upper guide rod, and the upper guide rod is inserted into the guide through hole on the top plate of the punching frame (50).

8. A three-way connector double-end punching device according to claim 7, characterized in that: The top surface of the horizontal guide plate (13) corresponding to the processing lifting plate (52) is formed with a lower groove, and the bottom surface of the lower groove is formed with a vertical through hole (131).

9. A three-way connector double-end punching device according to claim 8, characterized in that: An elastic anti-collision piece (3) is fixed on the top surface of the outer side of the lower groove, and the processing lifting plate (52) faces the corresponding elastic anti-collision piece (3).