A treadmill metal handrail processing device

Abstract

The present application relates to the field of metal processing technology, and specifically to a treadmill metal handrail processing device. The processing device is used to perform punching processing on the metal handrail, including an extrusion die set on a workbench for placing the metal handrail, and a hydraulic cylinder for driving the extrusion die to punch holes in the metal handrail; the extrusion die includes an outer mold assembly, an inner mold assembly, an extrusion assembly, a transverse pressing device, a pushing device, and a longitudinal pressing device. The processing device described in this case drives the transverse pressing device and the longitudinal pressing device to perform sequential punching of the handrail side beam in the transverse and longitudinal directions through the displacement of a hydraulic cylinder; this case can also adjust the downward damping of the longitudinal pressing device to ensure that the longitudinal pressing device can effectively rebound and reset automatically.

Description

Technical Field

[0001] The present application relates to the technical field of metal processing, and in particular to a treadmill metal handrail processing device. Background Art

[0002] Treadmills are commonly used fitness equipment. In order to meet the needs of online shopping, it is urgent to develop foldable treadmills with foldable armrests. Folding the armrests during transportation greatly reduces the space occupied by transportation, and users can quickly pull up the armrests for use after receiving the goods.

[0003] The installation of the treadmill metal handrail is inseparable from the punching operation, and the existing equipment does not have a punching device that is particularly suitable for the treadmill handrail. Therefore, it is necessary to design a processing device suitable for multi-hole punching of the metal handrail. Summary of the invention

[0004] A treadmill metal handrail processing device is used for punching holes on the metal handrail, comprising an extrusion die arranged on a workbench for placing the metal handrail, and a hydraulic cylinder for driving the extrusion die to punch holes on the metal handrail;

[0005] The extrusion die comprises:

[0006] The outer mold assembly includes a rectangular outer mold base, an active inner cavity provided at the left half of the outer mold base, and a transverse pressure plug hole provided at the lower right half of the active inner cavity. The outer mold assembly also includes an inner mold front hole formed from front to back at the right half of the outer mold base, the left side of the inner mold front hole is connected to the transverse pressure plug hole, and the right side of the inner mold front hole is provided with a discharge plug hole opening downward. The outer mold assembly also includes a transverse pressure side hole provided at the middle of the left side of the active inner cavity and a top pressure plug hole provided at the upper right half of the active inner cavity.

[0007] The inner mold assembly is arranged at the rear end of the inner mold front hole, and includes an inner mold insert handle, an upper groove arranged on the upper end surface of the inner mold insert handle, and an inner mold horizontal hole arranged in the middle of the inner mold insert handle and aligned with the horizontal pressure insert hole;

[0008] The extrusion assembly is arranged in the outer mold assembly and is used to press holes on the metal handrail. The extrusion assembly includes:

[0009] The horizontal pressure device includes a horizontal pressure main rod arranged through the horizontal pressure side hole, a horizontal pressure longitudinal plate arranged on the right side of the horizontal pressure main rod, a horizontal pressure rod arranged below the right side of the horizontal pressure longitudinal plate and inserted into the horizontal pressure insertion hole, a horizontal insertion tube formed above the horizontal pressure longitudinal plate, and a rotation-stopping plug block arranged in the horizontal insertion tube;

[0010] The pushing device comprises a pushing slider slidably arranged in the top pressure socket, a lower notch formed on the right side of the lower end surface of the pushing slider, an active inclined surface inclined from the upper right to the lower left formed on the left side of the lower notch, a right narrow hole formed in the middle of the right side of the pushing slider, an adjusting mandrel formed on the left side of the pushing slider and inserted into the horizontal inserting tube, a screw plug hole formed in the adjusting mandrel, an adjusting screw rotatably arranged in the screw plug hole, and a rotation-stopping side hole provided on the hole wall of the screw plug hole and plugged with a rotation-stopping plug block, wherein the stop end of the rotation-stopping plug block is formed with an incomplete thread engaged with the adjusting screw;

[0011] A longitudinal pressure device, comprising a longitudinal pressure blind hole provided at the lower end surface of the top pressure plug hole, a longitudinal pressure through hole formed on the left side of the lower end surface of the longitudinal pressure blind hole and connected to the front hole of the inner mold, a spring push rod provided in the longitudinal pressure blind hole, a longitudinal pressure plug block slidably inserted in the longitudinal pressure blind hole, a longitudinal pressure rod provided at the lower left side of the longitudinal pressure plug block and inserted into the longitudinal pressure through hole, and an internal narrow column provided on the upper end surface of the longitudinal pressure plug block and inserted into the right narrow hole, wherein the longitudinal pressure rod and the internal narrow column are further formed with an internal threaded hole that passes through from top to bottom and is sleeved in the spring push rod, a compression spring is further provided in the internal narrow column, and an external threaded rod that abuts against the compression spring is screwed to the upper end of the internal narrow column;

[0012] The transverse pressure main rod is connected with the hydraulic cylinder.

[0013] As a further implementation:

[0014] The right side of the screw rod insertion hole is enlarged to form an enlarged circular cavity, and the right end of the adjusting screw rod is enlarged to form an enlarged terminal that matches the enlarged circular cavity.

[0015] As a further implementation:

[0016] An upper adjustment hole for accommodating an external threaded rod is arranged above the top pressure socket.

[0017] As a further implementation:

[0018] The upper left part of the movable inner cavity is also provided with an adjustment left hole for accommodating the insertion of the adjustment screw rod.

[0019] As a further implementation:

[0020] The upper end of the external threaded rod is provided with a cross socket or a slotted socket.

[0021] As a further implementation:

[0022] The anti-rotation plug blocks are provided on the inner wall of the horizontal plug tube, one upper and one lower, with a total of two;

[0023] The anti-rotation side holes are also provided with two in total, one above and one below, on the wall of the screw rod insertion hole.

[0024] Beneficial effects:

[0025] The treadmill metal handrail processing device described in this case is used to punch holes in the metal handrail of the treadmill. The displacement of a hydraulic cylinder simultaneously drives the horizontal pressing device and the longitudinal pressing device to sequentially punch holes in the horizontal and longitudinal directions on the handrail side beams.

[0026] The treadmill metal handrail processing device described in this case can also adjust the downward damping of the longitudinal pressure device to ensure that the longitudinal pressure device can effectively rebound and reset automatically: insert a screwdriver above the external threaded rod through the adjustment upper hole, and then twist the external threaded rod to rotate downward (or upward) along the internal threaded hole, adjust the compression amount of the compression spring under normal conditions, and finally adjust the downward damping of the longitudinal pressure device.

[0027] In this case, the action interval of the longitudinal pressure device and the transverse pressure device can be adjusted to switch whether the longitudinal pressure action and the transverse pressure action are synchronized, and adapt to hydraulic cylinders with different pressures: when the pressure of the hydraulic cylinder is sufficient, the longitudinal pressure device and the transverse pressure device will act synchronously to press the hole quickly; when the pressure of the hydraulic cylinder is insufficient, the longitudinal pressure device and the transverse pressure device will act successively to press the hole slowly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the treadmill with the metal handrails laid flat.

[0029] Figure 2 It is a schematic diagram of the treadmill with the metal handrail in a vertical state.

[0030] Figure 3 It is a schematic diagram of an embodiment of the metal handrail.

[0031] Figure 4 It is a top view of an embodiment of the processing device.

[0032] Figure 5 It is a cross-sectional view of the processing device in a first state.

[0033] Figure 6 is a cross-sectional view of the processing device in the second state.

[0034] Figure 7 It is a cross-sectional view of the processing device in the third state.

[0035] Figure 8 It is a cross-sectional view of an embodiment of an outer mold assembly and an inner mold assembly.

[0036] Fig. 9 It is a cross-sectional view of an embodiment of the horizontal pressing device and the pushing device.

[0037] Fig.10It is a cross-sectional view of another embodiment of the horizontal pressing device and the pushing device.

[0038] Fig.11 yes Figure 5 Enlarged schematic diagram of part A in the middle.

[0039] Fig.12 It is a schematic diagram of the first state of the pushing device and the longitudinal pressing device.

[0040] Fig.13 It is a schematic diagram of the second state of the pushing device and the longitudinal pressing device.

[0041] In the figure:

[0042] 1. Outer mold assembly, 11. Outer mold base, 12. Active inner cavity, 13. Horizontal pressure jack, 14. Inner mold front hole, 15. Discharge jack, 16. Horizontal pressure side hole, 17. Top pressure jack, 18. Adjustment upper hole, 19. Adjustment left hole;

[0043] 2. Inner mold assembly, 21. Inner mold insert handle, 22. Upper groove, 23. Inner mold transverse hole;

[0044] 3. Extrusion assembly;

[0045] 31. Horizontal pressing device, 311. Horizontal pressing main rod, 312. Horizontal pressing longitudinal plate, 313. Horizontal pressing rod, 314. Horizontal insertion tube, 315. Anti-rotation plug block;

[0046] 32. Pushing device, 321. Pushing slide block, 322. Lower notch, 323. Active inclined plane, 324. Right narrow hole, 325. Adjusting mandrel, 326. Screw plug hole, 327. Adjusting screw, 328. Anti-rotation side hole;

[0047] 33. longitudinal pressure device, 331. longitudinal pressure blind hole, 332. longitudinal pressure through hole, 333. spring push rod, 334. longitudinal pressure plug, 335. longitudinal pressure rod, 336. built-in narrow column, 337. internal threaded hole, 338. compression spring, 339. external threaded rod;

[0048] 5. Hydraulic cylinder;

[0049] 6. Extrusion die;

[0050] 7. Treadmill body;

[0051] 8. Articulated socket;

[0052] 9. Metal handrail, 91. Handrail crossbeam, 92. Handrail side beam, 93. Front cross hole, 94. Rear cross hole, 95. Threaded hole. DETAILED DESCRIPTION

[0053] A treadmill metal handrail processing device, used for punching holes in a metal handrail 9, comprising an extrusion die 6 arranged on a workbench for placing the metal handrail 9, and a hydraulic cylinder 5 for driving the extrusion die 6 to punch holes in the metal handrail 9;

[0054] The extrusion die 6 comprises:

[0055] The outer mold assembly 1 includes a rectangular outer mold base 11, an active inner cavity 12 arranged in the left half of the outer mold base 11, and a transverse pressure socket 13 arranged in the lower half of the right side of the active inner cavity 12. The outer mold assembly 1 also includes an inner mold front hole 14 formed from front to back in the right half of the outer mold base 11, the left side of the inner mold front hole 14 is connected to the transverse pressure socket 13, and the right side of the inner mold front hole 14 is provided with a downwardly opening discharge socket 15, the outer mold assembly 1 also includes a transverse pressure side hole 16 arranged in the middle of the left side of the active inner cavity 12, and a top pressure socket 17 arranged in the upper half of the right side of the active inner cavity 12, an upper adjustment hole 18 for accommodating an external threaded rod 339 is provided above the top pressure socket 17, and an upper adjustment hole 19 for accommodating an adjusting screw rod 327 is also provided in the upper left side of the active inner cavity 12.

[0056] The inner mold assembly 2 is arranged at the rear end of the inner mold front hole 14, and includes an inner mold insert handle 21, an upper groove 22 arranged on the upper end surface of the inner mold insert handle 21, and an inner mold horizontal hole 23 arranged in the middle of the inner mold insert handle 21 and aligned with the horizontal pressure insert hole 13;

[0057] The extrusion assembly 3 is arranged in the outer mold assembly 1 and is used to press holes on the metal handrail 9. The extrusion assembly 3 includes:

[0058] The horizontal pressing device 31 includes a horizontal pressing main rod 311 passing through the horizontal pressing side hole 16, a horizontal pressing longitudinal plate 312 arranged on the right side of the horizontal pressing main rod 311, a horizontal pressing rod 313 arranged below the right side of the horizontal pressing longitudinal plate 312 and inserted into the horizontal pressing insertion hole 13, a horizontal insertion tube 314 formed above the horizontal pressing longitudinal plate 312, and a rotation-stopping plug 315 arranged in the horizontal insertion tube 314;

[0059] The pushing device 32 includes a pushing slider 321 slidably disposed in the top pressure insertion hole 17, a lower notch 322 formed on the right side of the lower end surface of the pushing slider 321, an active inclined surface 323 formed on the left side of the lower notch 322 and inclined from the upper right to the lower left, a right narrow hole 324 formed in the middle of the right side of the pushing slider 321, an adjusting mandrel 325 formed on the left side of the pushing slider 321 and inserted into the horizontal insertion tube 314, and a wire formed in the adjusting mandrel 325. A rod socket 326, an adjusting screw 327 rotatably arranged in the screw socket 326, and a side anti-rotation hole 328 arranged on the wall of the screw socket 326 and plugged into the anti-rotation plug 315, the anti-rotation plug 315 has an incomplete thread formed at the stop end thereof for engaging with the adjusting screw 327; further, the right side of the screw socket 326 is enlarged to form an enlarged circular cavity, and the right end of the adjusting screw 327 is enlarged to form an enlarged terminal for cooperating with the enlarged circular cavity.

[0060] The longitudinal pressing device 33 comprises a longitudinal pressing blind hole 331 provided at the lower end surface of the top pressing plug hole 17, a longitudinal pressing through hole 332 formed on the left side of the lower end surface of the longitudinal pressing blind hole 331 and connected to the inner mold front hole 14, a spring push rod 333 provided in the longitudinal pressing blind hole 331, a longitudinal pressing plug block 334 slidably inserted in the longitudinal pressing blind hole 331, a longitudinal pressing rod 335 provided at the lower left side of the longitudinal pressing plug block 334 and inserted into the longitudinal pressing through hole 332, and a spring push rod 333 provided in the longitudinal pressing blind hole 331. The upper end surface of 334 is inserted into the built-in narrow column 336 in the narrow hole 324 on the right side. The longitudinal pressure rod 335 and the built-in narrow column 336 are also formed with an internal threaded hole 337 that runs through the upper and lower parts and is sleeved in the spring top rod 333. A compression spring 338 is also arranged in the built-in narrow column 336. The upper end of the built-in narrow column 336 is screwed with an external threaded rod 339 that abuts against the compression spring 338. The upper end of the external threaded rod 339 is provided with a cross socket or a straight socket.

[0061] The transverse pressure main rod 311 is connected to the hydraulic cylinder 5 .

[0062] The metal handrail 9 of the treadmill described in this case at least includes a handrail crossbeam 91 and handrail side beams 92 arranged at both ends of the handrail crossbeam 91. The left and right sides of each handrail side beam 92 are provided with a front transverse hole 93 and a rear transverse hole 94 from front to back, and the upper end surface (in the laid-down state) of each handrail side beam 92 is also provided with two threaded holes 95. Correspondingly, a hinge socket 8 corresponding to the handrail side beam 92 is respectively provided on both sides of the treadmill body 7, and the hinge socket 8 is also provided with a through hole that matches the front transverse hole 93, the rear transverse hole 94, and the threaded hole 95.

[0063] The metal handrail 9 can be laid down for transportation and delivery, or it can be erected to support the user for running:

[0064] In the lying position (as shown in the instruction manual) Figure 1As shown), the rear transverse hole 94 is hingedly fixed to the through hole below the side of the hinge socket 8 by a lower bolt pair, so that the metal handrail 9 can be hingedly rotated around the lower bolt pair.

[0065] In vertical position (see the instruction manual Figure 2 As shown in FIG. 1 ), the front transverse hole 93 is fixed to the through hole on the upper side of the hinge socket 8 by an upper bolt pair, and the metal handrail 9 is completely fixed at this time. Further, the fixing screw is tightened to the threaded hole 95 through the through hole at the rear end of the hinge socket 8 to further fix the metal handrail 9.

[0066] The processing device described in this case is used to perform hole punching on the side and top surface of the metal handrail 9. The specific usage is as follows:

[0067] Step 1, insert the metal handrail 9:

[0068] Insert the metal handrail 9 into the front hole 14 of the inner mold from front to back and sleeve it on the outer wall of the inner mold assembly 2;

[0069] Step 2, punching holes:

[0070] As the instruction manual Figure 5 , 6 As shown:

[0071] The hydraulic cylinder 5 extends and drives the horizontal pressing device 31 to move to the right;

[0072] The active inclined surface 323 acts on the longitudinal pressure plug 334, so that the longitudinal pressure plug 334 and the longitudinal pressure rod 335 overcome the damping of the compression spring 338 and move downward, thereby forming an upper through hole on the upper end surface of the metal handrail 9, so as to facilitate forming the final threaded hole 95 by tapping in the subsequent process;

[0073] The hydraulic cylinder 5 continues to extend, thereby driving the horizontal pressing device 31 to continue to move to the right;

[0074] The horizontal pressure rod 313 passes through the horizontal pressure insertion hole 13 and the inner mold horizontal hole 23 to form a rear horizontal hole 94 on the side of the metal handrail 9;

[0075] The hydraulic cylinder 5 contracts, thereby resetting the extrusion assembly 3;

[0076] Step 3, adjust the position:

[0077] Move the metal handrail 9 backwards a short distance in the front hole 14 of the inner mold;

[0078] Step 4, repeat step 2 to punch holes again, and finally form the front transverse hole 93 and another upper through hole.

[0079] Step 5, tapping:

[0080] The metal handrail 9 is taken out, and the two upper through holes are tapped to form the final threaded holes 95 .

[0081] Furthermore, the processing device described in this case can adjust the downward damping of the longitudinal pressing device 33:

[0082] Through the upper adjustment hole 18, insert a screwdriver onto the external threaded rod 339, and then twist the external threaded rod 339 to rotate downward (or upward) along the internal threaded hole 337, adjust the compression amount of the compression spring 338 under normal conditions, and finally adjust the downward damping of the longitudinal pressure device 33.

[0083] Furthermore, in this case, the action intervals of the horizontal pressing device 31 and the longitudinal pressing device 33 can be adjusted:

[0084] As the instruction manual Fig. 9 , 10 As shown:

[0085] The adjusting screw rod 327 is rotated through the left adjusting hole 19, and the adjusting screw rod 327 acts on the anti-rotation plug block 315 to drive the entire horizontal pressing device 31 to move relative to the pushing device 32, thereby adjusting the left and right position of the horizontal pressing device 31 relative to the pushing device 32;

[0086] The interval between the first hole pressing action of the longitudinal pressing device 33 driven by the pushing device 32 and the second hole pressing action of the transverse pressing device 31 is adjusted.

[0087] When the pressure of the hydraulic cylinder 5 is sufficient, the longitudinal pressing device 33 and the transverse pressing device 31 are synchronously operated to quickly press the hole;

[0088] When the pressure of the hydraulic cylinder 5 is insufficient, the longitudinal pressing device 33 and the transverse pressing device 31 are activated successively to press the hole slowly.

Claims

1. A treadmill metal handrail processing device, used for punching holes in a metal handrail (9), characterized in that: It comprises an extrusion die (6) arranged on a workbench for placing a metal handrail (9), and a hydraulic cylinder (5) for driving the extrusion die (6) to press a hole in the metal handrail (9); The extrusion die (6) comprises: The outer mold assembly (1) comprises an outer mold base (11) in a rectangular shape, an active inner cavity (12) arranged at the left half of the outer mold base (11), and a transverse pressure plug hole (13) arranged at the lower right half of the active inner cavity (12); the outer mold assembly (1) further comprises an inner mold front hole (14) formed from front to back at the right half of the outer mold base (11); the left side of the inner mold front hole (14) is connected to the transverse pressure plug hole (13); the right side of the inner mold front hole (14) is provided with a discharge plug hole (15) opening downward; the outer mold assembly (1) further comprises a transverse pressure side hole (16) arranged at the middle of the left side of the active inner cavity (12), and a top pressure plug hole (17) arranged at the upper right half of the active inner cavity (12); The inner mold assembly (2) is arranged at the rear end of the inner mold front hole (14), comprising an inner mold insert handle (21), an upper groove (22) arranged on the upper end surface of the inner mold insert handle (21), and an inner mold transverse hole (23) arranged in the middle of the inner mold insert handle (21) and aligned with the transverse pressure insertion hole (13); An extrusion assembly (3) is arranged in the outer mold assembly (1) and is used to press holes on the metal handrail (9); The extrusion assembly (3) comprises: The transverse pressing device (31) comprises a transverse pressing main rod (311) disposed through the transverse pressing side hole (16), a transverse pressing longitudinal plate (312) disposed on the right side of the transverse pressing main rod (311), a transverse pressing rod (313) disposed below the right side of the transverse pressing longitudinal plate (312) and inserted into the transverse pressing insertion hole (13), a transverse insert (314) formed above the transverse pressing longitudinal plate (312), and a rotation-stopping insert (315) disposed in the transverse insert (314); The pushing device (32) comprises a pushing slider (321) slidably arranged in the top pressure socket (17), a lower notch (322) formed on the right side of the lower end surface of the pushing slider (321), an active inclined surface (323) inclined from the upper right to the lower left formed on the left side of the lower notch (322), a right narrow hole (324) formed in the middle of the right side of the pushing slider (321), an adjustment mandrel (325) formed on the left side of the pushing slider (321) and inserted into the transverse insertion tube (314), a screw rod socket (326) formed in the adjustment mandrel (325), an adjustment screw rod (327) rotatably arranged in the screw rod socket (326), and a rotation-stopping side hole (328) provided on the hole wall of the screw rod socket (326) and plugged with the rotation-stopping plug block (315), wherein the stop end of the rotation-stopping plug block (315) is formed with an incomplete thread meshing with the adjustment screw rod (327); The longitudinal pressure device (33) comprises a longitudinal pressure blind hole (331) provided at the lower end surface of the top pressure plug hole (17), a longitudinal pressure through hole (332) formed on the left side of the lower end surface of the longitudinal pressure blind hole (331) and connected to the inner mold front hole (14), a spring push rod (333) provided in the longitudinal pressure blind hole (331), a longitudinal pressure plug block (334) slidably inserted in the longitudinal pressure blind hole (331), and a longitudinal pressure rod (333) provided at the lower left side of the longitudinal pressure plug block (334) and inserted into the longitudinal pressure through hole (332). 35), an internal narrow column (336) disposed on the upper end surface of the longitudinal pressure plug (334) and inserted into the right narrow hole (324), the longitudinal pressure rod (335) and the internal narrow column (336) are also formed with an internal threaded hole (337) that passes through from top to bottom and is sleeved in the spring top rod (333), a compression spring (338) is also disposed in the internal narrow column (336), and an external threaded rod (339) that abuts against the compression spring (338) is screwed to the upper end of the internal narrow column (336); The transverse pressure main rod (311) is connected to the hydraulic cylinder (5).

2. A treadmill metal handrail processing device according to claim 1, characterized in that: The right side of the screw rod insertion hole (326) is enlarged to form an enlarged circular cavity, and the right end of the adjusting screw rod (327) is enlarged to form an enlarged terminal that cooperates with the enlarged circular cavity.

3. A treadmill metal handrail processing device according to claim 2, characterized in that: An upper adjustment hole (18) for accommodating an externally threaded rod (339) is provided above the top pressure socket (17).

4. A treadmill metal handrail processing device according to claim 3, characterized in that: The upper left portion of the movable inner cavity (12) is also provided with a left adjustment hole (19) for accommodating the insertion of the adjustment screw rod (327).

5. A treadmill metal handrail processing device according to claim 4, characterized in that: The upper end of the external threaded rod (339) is provided with a cross socket or a slotted socket.

6. A treadmill metal handrail processing device according to claim 5, characterized in that: The anti-rotation plug blocks (315) are provided with two in total, one above and one below, on the inner wall of the transverse plug tube (314); The anti-rotation side holes (328) are also provided on the wall of the screw rod insertion hole (326), one above and one below, for a total of two.

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