Riveting machine anti-pressure hand device and anti-pressure hand system

Abstract

The present invention relates to an anti-hand pressure device and an anti-hand pressure system for a riveting machine. The anti-hand pressure device for the riveting machine includes a connecting rod, a connecting seat, a connecting sleeve, a conductive ring, a pressure rod, a fastening sleeve, a fastening screw, an insulating sleeve, a guide sleeve, an insulating guide sleeve seat, a first compression spring, a positive terminal and a negative terminal. The anti-hand pressure system for the riveting machine includes a control power supply, an anode wire, a cathode wire, a branch cathode wire, a riveting control device and the above-mentioned anti-hand pressure device. The present invention has a compact structure, a reasonable design and high sensitivity. It is applied to a riveting machine, and controls the operation or reset of the riveting booster cylinder by powering on or off the riveting control device. When the upper die contacts a human hand when pressing down, the riveting control device can quickly cut off the power, so that the riveting booster cylinder does not press down and quickly resets, effectively avoiding the risk of hand pressure, and having excellent safety protection performance.

Description

Technical Field

[0001] The invention relates to a safety protection device in a riveting connection process, in particular to a hand-pressure prevention device and a hand-pressure prevention system for a riveting machine, belonging to the technical field of riveting automation. Background Art

[0002] Riveting refers to the method of using axial force to thicken the head of the rivet screw so that multiple parts are connected and fixed. At present, in the field of riveting, with the continuous improvement of automation technology, many steps that were originally manually operated have gradually been replaced by machines, but some processes still require human participation, so the safety of workers is also an issue that companies must pay attention to. At present, workers' hands being crushed is the most common safety problem. Although there are protective devices against crushed hands on the market, they are not sensitive to the reaction and are still prone to safety accidents. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a hand-pressure prevention device and a hand-pressure prevention system for a riveting machine, which have a compact structure, a reasonable design, a high sensitivity and excellent safety protection performance.

[0004] The first object of the present invention is achieved by the following technical solutions:

[0005] The anti-pressure hand device of a riveting machine is characterized in that it includes a connecting rod, a connecting seat, a connecting sleeve, a conductive ring, a pressure rod, a fastening sleeve, a fastening screw, an insulating sleeve, a guide sleeve, an insulating guide sleeve seat, a first compression spring, a positive terminal and a negative terminal; the connecting seat is connected to the lower end of the connecting rod, the connecting sleeve is connected to the lower end of the connecting seat, and the central through hole of the connecting sleeve is divided into three sections according to different inner diameters, which are a thick diameter section, a middle section and a thin diameter section from top to bottom, a first annular step is formed between the thick diameter section and the middle section, and a second annular step is formed between the middle section and the thin diameter section; the conductive ring is arranged in the thick diameter section, and the lower end of the conductive ring is supported on the first annular step; the upper end of the pressure rod is penetrated in the conductive ring, and the fastening sleeve is fixed to the upper end of the pressure rod by a fastening screw, the outer diameter of the fastening sleeve is larger than the outer diameter of the conductive ring, and the lower end surface of the fastening sleeve abuts against the upper end surface of the conductive ring; the The insulating sleeve is arranged in the middle section and the thin-diameter section of the connecting sleeve, and an annular shoulder is arranged at the upper end of the insulating sleeve, and the annular shoulder is supported on the second annular step; the pressure rod is inserted into the insulating sleeve, and an annular boss is arranged in the middle of the pressure rod, and the lower end surface of the annular boss abuts against the upper end surface of the insulating sleeve; a concave cavity is arranged at the bottom of the connecting seat, and the guide sleeve is arranged in the concave cavity, and an insulating guide sleeve seat is arranged between the guide sleeve and the connecting seat; the first compression spring is arranged between the guide sleeve and the fastening sleeve, the upper end of the first compression spring abuts against the guide sleeve, and the lower end of the first compression spring abuts against the fastening sleeve; a positive terminal for connecting the anode wire is connected to the center of the guide sleeve, and the positive terminal and the connecting seat are insulated from each other; a negative terminal for connecting the cathode wire is also arranged on the connecting seat, and a threading hole for threading the wire is arranged on the side wall of the connecting seat.

[0006] As a further improvement of the anti-hand pressure device, a positive terminal mounting hole is provided in the center of the guide sleeve, a through hole is provided in the center of the bottom of the connecting seat, the positive terminal is connected to the positive terminal mounting hole after passing through the through hole, and an insulating pad is provided between the end of the positive terminal and the connecting seat.

[0007] As a further improvement of the anti-hand pressure device, a negative terminal mounting hole is provided at the bottom of the connection seat, and the negative electrode terminal is connected in the negative terminal mounting hole.

[0008] As a further improvement of the anti-hand pressure device, the positive electrode terminal and the negative electrode terminal both use bolts, and the positive terminal mounting hole and the negative terminal mounting hole are both set as threaded holes.

[0009] As a further improvement of the anti-hand pressure device, an air pressure balance hole is provided on the connecting seat, and the upper end of the air pressure balance hole is connected to the inner cavity of the connecting seat, and the lower end is connected to the inner cavity of the connecting sleeve.

[0010] As a further improvement of the anti-hand pressure device, a second compression spring is sleeved on the upper part of the pressure rod, the upper end of the second compression spring abuts against the fastening sleeve, and the lower end of the second compression spring abuts against the upper end surface of the annular boss on the pressure rod.

[0011] The second object of the present invention is achieved by the following technical solutions:

[0012] The anti-pressure hand system of the riveting machine is characterized in that it includes a control power supply, an anode wire, a cathode wire, a branch cathode wire, a riveting control device and the above-mentioned anti-pressure hand device; the positive electrode of the control power supply is connected to one end of the anode wire, and the other end of the anode wire is connected to the positive terminal in the anti-pressure hand device; the negative electrode of the control power supply is connected to one end of the cathode wire, and the other end of the cathode wire is connected to the negative terminal in the anti-pressure hand device; one end of the branch cathode wire is connected to the negative terminal, and the other end is connected to the lower die of the riveting machine; the riveting control device is connected to the anode wire or the cathode wire, and the riveting control device is connected to the riveting booster cylinder. When the riveting control device is powered on, the riveting booster cylinder can be pressed down normally, and when the riveting control device is powered off, the riveting booster cylinder is reset; the anti-pressure hand device is installed on the piston rod of the riveting booster cylinder, and the lower end of the pressure rod of the anti-pressure hand device is connected to the upper die.

[0013] As a further improvement of the anti-hand pressure system, the voltage of the control power supply does not exceed 24V.

[0014] As a further improvement of the anti-hand pressure system, the pressure riveting control device adopts a relay.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The present invention has a compact structure, reasonable design and high sensitivity. When applied to a riveting machine, when the upper die contacts a human hand during pressing down, the riveting booster cylinder will not be pressed down and will be quickly reset, thereby effectively avoiding the risk of hand pressing and having excellent safety protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention.

[0018] Figure 2 Electrical schematic diagram of embodiment 2 of the present invention.

[0019] Figure 3 This is a schematic diagram of the installation and application of Example 2 of the present invention.

[0020] Explanation of the reference numerals: 1-connecting rod, 2-connecting seat, 2a-threading hole, 2b-air pressure balance hole, 3-connecting sleeve, 3a-thick diameter section, 3b-middle section, 3c-thin diameter section, 3d-first annular step, 3e-second annular step, 4-conductive ring, 5-pressure rod, 5a-annular boss, 6-fastening sleeve, 7-fastening screw, 8-insulating sleeve, 8a-annular shoulder, 9-guide sleeve, 10-insulating guide sleeve seat, 11-first compression spring, 12-positive terminal, 13-insulating pad, 14-negative terminal, 15-second compression spring, 16-control power supply, 17-anode wire (, 18-cathode wire, 19-branch cathode wire, 20-pressure riveting control device, 21-pressure riveting booster cylinder, 22-upper die, 23-lower die. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0022] Example 1

[0023] like Figure 1 As shown, Example 1 discloses a riveting machine anti-hand pressure device, which is mainly composed of a connecting rod 1, a connecting seat 2, a connecting sleeve 3, a conductive ring 4, a pressure rod 5, a fastening sleeve 6, a fastening screw 7, an insulating sleeve 8, a guide sleeve 9, an insulating guide sleeve seat 10, a first compression spring 11, a positive terminal 12, an insulating pad 13, a negative terminal 14 and a second compression spring 15.

[0024] The connecting seat 2 is connected to the lower end of the connecting rod 1, and the connecting sleeve 3 is connected to the lower end of the connecting seat 2. The central through hole of the connecting sleeve 3 is divided into three sections according to different inner diameters, namely, a thick diameter section 3a, a middle section 3b and a thin diameter section 3c from top to bottom. A first annular step 3d is formed between the thick diameter section 3a and the middle section 3b, and a second annular step 3e is formed between the middle section 3b and the thin diameter section 3c.

[0025] The conductive ring 4 is arranged in the thick diameter section 3a, and the lower end of the conductive ring 4 is supported on the first annular step 3d; the upper end of the pressure rod 5 is passed through the conductive ring 4, and the fastening sleeve 6 is fixed to the upper end of the pressure rod 5 by the fastening screw 7, the outer diameter of the fastening sleeve 6 is larger than the outer diameter of the conductive ring 4, and the lower end surface of the fastening sleeve 6 abuts against the upper end surface of the conductive ring 4; the insulating sleeve 8 is arranged in the middle section 3b and the thin diameter section 3c of the connecting sleeve 3, and the upper end of the insulating sleeve 8 is provided with an annular shoulder 8a, and the annular shoulder 8a is supported on the second annular step 3e; the pressure rod 5 is passed through the insulating sleeve 8, and an annular boss 5a is provided in the middle part of the pressure rod 5, and the lower end surface of the annular boss 5a abuts against the upper end surface of the insulating sleeve 8.

[0026] A concave cavity is provided at the bottom of the connecting seat 2, the guide sleeve 9 is arranged in the concave cavity, and an insulating guide sleeve seat 10 is provided between the guide sleeve 9 and the connecting seat 2; the first compression spring 11 is arranged between the guide sleeve 9 and the fastening sleeve 6, the upper end of the first compression spring 11 abuts against the guide sleeve 9, and the lower end of the first compression spring 11 abuts against the fastening sleeve 6.

[0027] The guide sleeve 9 is provided with a positive terminal mounting hole at the center, and the connection seat 2 is provided with a through hole at the bottom center. The positive terminal 12 is connected to the positive terminal mounting hole after passing through the through hole, and an insulating pad 13 is provided between the end of the positive terminal 12 and the connection seat 2. The connection seat 2 is provided with a negative terminal mounting hole at the bottom, and the negative terminal 14 is connected to the negative terminal mounting hole; the connection seat 2 is provided with a threading hole 2a for threading a wire on the side wall.

[0028] In the present embodiment 1, the positive electrode terminal 12 and the negative electrode terminal 14 are both bolted, and the positive electrode terminal mounting hole and the negative electrode terminal mounting hole are both threaded holes, which makes wiring more convenient.

[0029] like Figure 1 As shown, in this embodiment 1, the connection base 2 is provided with an air pressure balance hole 2b, the upper end of which is connected to the inner cavity of the connection base 2, and the lower end of which is connected to the inner cavity of the connection sleeve 3. This arrangement allows the air pressure in the upper and lower parts of the connection base 2 to be balanced, avoiding affecting the movement of the internal components.

[0030] like Figure 1 As shown, in this embodiment 1, the upper part of the pressure rod 5 is sleeved with a second compression spring 15, the upper end of the second compression spring 15 abuts against the fastening sleeve 6, and the lower end of the second compression spring 15 abuts against the upper end surface of the annular boss 5a on the pressure rod 5. Such an arrangement can provide a certain degree of buffering and further improve the safety protection performance.

[0031] Example 2

[0032] like Figure 2 , Figure 3 As shown, Example 2 discloses a riveting machine anti-hand pressure system, which is mainly composed of a control power supply 16, an anode wire 17, a cathode wire 18, a branch cathode wire 19, a riveting control device 20 and an anti-hand pressure device, and the anti-hand pressure device adopts the product in Example 1.

[0033] like Figure 2 , Figure 3As shown, the positive electrode of the control power supply 16 is connected to one end of the anode wire 17, and the other end of the anode wire 17 is connected to the positive terminal 12 in the anti-pressure hand device; the negative electrode of the control power supply 16 is connected to one end of the cathode wire 18, and the other end of the cathode wire 18 is connected to the negative terminal 14 in the anti-pressure hand device; one end of the branch cathode wire 19 is connected to the negative terminal 14, and the other end is connected to the lower die 23 of the riveting machine; the riveting control device 20 is connected to the anode wire 17, and the riveting control device 20 is connected to the riveting booster cylinder 21. When the riveting control device 20 is powered on, the riveting booster cylinder 21 can be pressed down normally, and when the riveting control device 20 is powered off, the riveting booster cylinder 21 is reset; the anti-pressure hand device is installed on the piston rod of the riveting booster cylinder 21, and the lower end of the pressure rod 5 of the anti-pressure hand device is connected to the upper die 22.

[0034] In this embodiment 2, the voltage of the control power supply 16 does not exceed 24 V to ensure safety in use. The pressure riveting control device 20 uses a relay, which is easy to control and low in cost.

[0035] The working principle and working process of this embodiment 2 are as follows:

[0036] In the initial state, the lower end of the conductive ring 4 is in contact with the connecting sleeve 3, and the positive terminal 12 and the negative terminal 14 are connected and conducted through the guide sleeve 9, the first compression spring 11, the fastening sleeve 6, the conductive ring 4, the connecting sleeve 3 and the connecting seat 2 in sequence. The positive terminal 12 and the negative terminal 14 are connected to the control power supply 16 through the anode wire 17 and the cathode wire 18 respectively, thus forming a conducting circuit, so that the riveting control device 20 is energized and the riveting booster cylinder 21 can be pressed down normally.

[0037] When the piston rod of the riveting booster cylinder 21 drives the upper die 22 to move downward to the riveting working position, the upper die 22 will be subjected to an upward blocking force and push the pressure rod 5 to move upward. The first compression spring 11 is compressed, and the lower end of the conductive ring 4 is out of contact with the connecting sleeve 3, and the conductive ring 4 and the connecting sleeve 3 are disconnected.

[0038] If there is a normal metal workpiece between the upper die 22 and the lower die 23, since the metal workpiece can conduct electricity, the positive terminal 12 and the negative terminal 14 can be connected and conducted in sequence through the guide sleeve 9, the first compression spring 11, the fastening sleeve 6, the conductive ring 4, the pressure rod 5, the upper die 22, the metal workpiece, the lower die 23 and the branch cathode wire 19, and the riveting booster cylinder 21 can still be pressed down normally to complete the riveting operation.

[0039] If there is a human hand between the upper die 22 and the lower die 23, since the worker wears insulating gloves when operating, the connection between the positive terminal 12 and the negative terminal 14 will be disconnected, the riveting control device 20 will be powered off, and the riveting booster cylinder 21 will be quickly reset to avoid crushing the worker.

[0040] The above description is only a preferred embodiment of the present invention, and the above specific embodiment is not intended to limit the present invention. Various deformations and modifications may occur within the scope of the technical concept of the present invention, and any modification, modification or equivalent replacement made by a person of ordinary skill in the art based on the above description shall fall within the scope of protection of the present invention.

Claims

1. The anti-hand pressure device of the riveting machine is characterized by: The invention comprises a connecting rod (1), a connecting seat (2), a connecting sleeve (3), a conductive ring (4), a pressure rod (5), a fastening sleeve (6), a fastening screw (7), an insulating sleeve (8), a guide sleeve (9), an insulating guide sleeve seat (10), a first compression spring (11), a positive electrode terminal (12) and a negative electrode terminal (14); the connecting seat (2) is connected to the lower end of the connecting rod (1), the connecting sleeve (3) is connected to the lower end of the connecting seat (2), and the central through hole of the connecting sleeve (3) is divided into three sections according to different inner diameters, namely, from top to bottom, a thick diameter section (3a), an intermediate section (3b) and a thin diameter section (3c), wherein the thick diameter section (3a) and the thin diameter section (3c) are respectively A first annular step (3d) is formed between the large diameter section (3a) and the middle section (3b), and a second annular step (3e) is formed between the middle section (3b) and the small diameter section (3c); the conductive ring (4) is arranged in the large diameter section (3a), and the lower end of the conductive ring (4) is supported on the first annular step (3d); the upper end of the pressure rod (5) is inserted into the conductive ring (4), and the fastening sleeve (6) is fixed to the upper end of the pressure rod (5) by a fastening screw (7); the outer diameter of the fastening sleeve (6) is larger than the outer diameter of the conductive ring (4), and the lower end surface of the fastening sleeve (6) abuts against the upper end surface of the conductive ring (4); the insulating sleeve The insulating sleeve (8) is arranged in the middle section (3b) and the thin-diameter section (3c) of the connecting sleeve (3); the upper end of the insulating sleeve (8) is provided with an annular shoulder (8a), and the annular shoulder (8a) is supported on the second annular step (3e); the pressure rod (5) is inserted into the insulating sleeve (8), and the middle part of the pressure rod (5) is provided with an annular boss (5a), and the lower end surface of the annular boss (5a) is in contact with the upper end surface of the insulating sleeve (8); the bottom of the connecting seat (2) is provided with a concave cavity, and the guide sleeve (9) is arranged in the concave cavity, and an insulating guide sleeve seat (10) is provided between the guide sleeve (9) and the connecting seat (2). ); the first compression spring (11) is arranged between the guide sleeve (9) and the fastening sleeve (6), the upper end of the first compression spring (11) abuts against the guide sleeve (9), and the lower end of the first compression spring (11) abuts against the fastening sleeve (6); the center of the guide sleeve (9) is connected to a positive electrode terminal (12) for connecting an anode wire (17), and the positive electrode terminal (12) and the connection seat (2) are insulated from each other; the connection seat (2) is also provided with a negative electrode terminal (14) for connecting a cathode wire (18), and a threading hole (2a) for threading a wire is provided on the side wall of the connection seat (2).

2. The anti-hand pressure device for a riveting machine according to claim 1, characterized in that: A positive terminal mounting hole is provided at the center of the guide sleeve (9), a through hole is provided at the center of the bottom of the connection seat (2), the positive terminal (12) passes through the through hole and is connected to the positive terminal mounting hole, and an insulating pad (13) is provided between the end of the positive terminal (12) and the connection seat (2).

3. The device for preventing hand pressure of a riveting machine according to claim 2, characterized in that: The bottom of the connection seat (2) is provided with a negative terminal mounting hole, and the negative electrode connection terminal (14) is connected in the negative terminal mounting hole.

4. The device for preventing hand pressure of a riveting machine according to claim 3, characterized in that: The positive electrode terminal (12) and the negative electrode terminal (14) are both bolted, and the positive electrode terminal mounting hole and the negative electrode terminal mounting hole are both threaded holes.

5. The device for preventing hand pressure of a riveting machine according to claim 1, characterized in that: The connecting seat (2) is provided with an air pressure balance hole (2b), the upper end of the air pressure balance hole (2b) is communicated with the inner cavity of the connecting seat (2), and the lower end is communicated with the inner cavity of the connecting sleeve (3).

6. The device for preventing hand pressure of a riveting machine according to claim 1, characterized in that: The upper part of the pressure rod (5) is sleeved with a second compression spring (15), the upper end of the second compression spring (15) abuts against the fastening sleeve (6), and the lower end of the second compression spring (15) abuts against the upper end surface of the annular boss (5a) on the pressure rod (5).

7. The anti-hand pressure system of the riveting machine is characterized by: The invention comprises a control power supply (16), an anode wire (17), a cathode wire (18), a branch cathode wire (19), a pressure riveting control device (20), and an anti-hand pressure device according to any one of claims 1 to 6; the positive electrode of the control power supply (16) is connected to one end of the anode wire (17), and the other end of the anode wire (17) is connected to the positive terminal (12) in the anti-hand pressure device; the negative electrode of the control power supply (16) is connected to one end of the cathode wire (18), and the other end of the cathode wire (18) is connected to the negative terminal (14) in the anti-hand pressure device; the branch cathode wire (19) is connected to the positive terminal (12) in the anti-hand pressure device; the positive electrode of the control power supply (16) is connected to one end of the cathode wire (18), and the other end of the cathode wire (18) is connected to the negative terminal (14) in the anti-hand pressure device; One end of the anode wire (19) is connected to the negative electrode terminal (14), and the other end is connected to the lower die (23) of the riveting machine; the riveting control device (20) is connected to the anode wire (17) or the cathode wire (18), and the riveting control device (20) is connected to the riveting booster cylinder (21). When the riveting control device (20) is powered on, the riveting booster cylinder (21) can be pressed down normally, and when the riveting control device (20) is powered off, the riveting booster cylinder (21) is reset; the anti-pressure hand device is installed on the piston rod of the riveting booster cylinder (21), and the lower end of the pressure rod (5) of the anti-pressure hand device is connected to the upper die (22).

8. The anti-hand pressure system for a riveting machine according to claim 7, characterized in that: The voltage of the control power supply (16) does not exceed 24V.

9. The anti-hand pressure system for a riveting machine according to claim 7, characterized in that: The pressure riveting control device (20) is a relay.

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