A reverse bending device for long sections of spring hooks

Abstract

A reverse bending device for a long section of a spring hook. The problem of the difficulty in bending the existing long sections of spring hooks is solved. It comprises a bending frame, on which a bending device and a bending fixing device are provided, the bending fixing device comprises a bending positioning mechanism for positioning the long section of the spring hook to be processed and a bending clamping mechanism for clamping the long section of the spring hook to be processed during the bending process, the bending positioning mechanism comprises a bending positioning core and a positioning driving member, the bending device comprises a bending mechanism and a bending driving member, the bending driving member is connected to the bending mechanism and drives the bending mechanism to drive the long section of the spring hook to be processed to perform reverse bending processing on the long section of the spring hook to be processed with the positioning column as the support point and the outer surface of the bending positioning core as the support surface. The beneficial effect of the present invention is that the bending process is performed after the tail inclined groove of the long section of the spring hook to be processed is positioned, and the deformation of the processed product is small and the product processing accuracy is high.

Description

Technical Field

[0001] The invention relates to a spring hook long section processing device, in particular to a spring hook long section reverse bending device. Background Art

[0002] Spring hooks are a common hardware product, widely used in mountaineering buckles, rope buckles, pet chains, key accessories, special-shaped chains, luggage buckles, connecting hooks, anti-skid chains and other products. Spring hooks are mostly gourd-shaped, with a C-shaped long section and a straight short section hinged into a closed ring through rivets, and a spring is installed between the long section and the short section to keep the long section and the short section in a normally closed state. At present, the traditional process for processing the long section of the spring hook is: first, the profile is processed into a spring hook blank with a small arc part; then the spring hook blank is processed by multiple different processing devices to make it a formed C-type spring hook. The processing device includes a mechanism for milling a chamfer on the head of the spring hook blank, a mechanism for milling a tooth on the head of the spring hook blank, a mechanism for milling two planes on the head of the spring hook blank, a mechanism for milling a straight groove on the tail of the spring hook blank, a mechanism for milling an inclined groove and a head cut on the tail of the spring hook blank, a mechanism for removing burrs, and a mechanism for bending the spring hook blank. In the existing spring hook processing, each processing device is set separately, and after bending, the long section and the short section are manually assembled to form a spring hook. In order to facilitate clamping and processing, the head of the long section of the spring hook is usually clamped at the bending station, so that the tail position rotates around the positioning piece to form a larger semicircle. Since the bending action is usually performed in a clockwise direction, it is also commonly called forward bending. However, in automated or semi-automatic production equipment, the long section and the short section have high requirements for matching accuracy, and the long section of the spring hook after positive bending has a long distance between the force point and the bending point during bending. After bending, it will generate a restoring force (deform in the direction before bending, and the tail is the matching point with the short section of the spring hook). The deformation formed by positive bending is large, which will affect the processing and assembly of subsequent products. Summary of the invention

[0003] In order to solve the problem that it is difficult to bend the long section of the existing spring hook in the background technology, the present invention provides a reverse bending device for the long section of the spring hook.

[0004] The technical solution of the present invention is: a reverse bending device for a long section of a spring hook, comprising a bending frame, on which a bending device and a bending fixing device are provided, wherein the bending fixing device comprises a bending positioning mechanism for positioning the long section of the spring hook to be processed and a bending clamping mechanism for clamping the long section of the spring hook to be processed during the bending process, wherein the bending positioning mechanism comprises a bending positioning core and a positioning driving member, wherein the bending positioning core comprises a positioning column which is inserted into the tail inclined groove of the long section of the spring hook to be processed and is used to position the long section of the spring hook to be processed, wherein the bending positioning core has a first position driven by the positioning driving member for positioning the long section of the spring hook to be processed and a second position for facilitating the taking and placing of the long section of the spring hook to be processed; the bending clamping mechanism is used to limit the long section of the spring hook to be processed when the bending positioning core is in the first position, wherein the bending device comprises a bending mechanism and a bending driving member, wherein the bending driving member is connected to the bending mechanism and drives the bending mechanism to drive the long section of the spring hook to be processed to perform reverse bending processing on the long section of the spring hook to be processed with the positioning column as a support point and the outer surface of the bending positioning core as a support surface.

[0005] As a further improvement of the present invention, the bending drive member is connected to the bending mechanism through a bending turntable and drives the bending member to rotate. The bending mechanism includes a bending support frame, and the bending support frame is provided with a bending member for driving the long section of the spring hook to be processed to be bent.

[0006] As a further improvement of the present invention, the bending support frame is provided with a bending guide member, and the bending guide member is provided with a bending guide cavity for accommodating the head of the spring hook long section. The bending member is a bending wheel, which is arranged on the bending support frame and rotatably cooperates with the bending support frame. The outer surface of the bending wheel is provided with a bending groove which is convenient for pressing the spring hook long section to be processed.

[0007] As a further improvement of the present invention, a bending mounting plate is provided on the bending frame, the bending mechanism and the bending clamping mechanism are both arranged above the bending mounting plate, the bending mounting plate is provided with a bending positioning piece for positioning the long section of the spring hook to be processed, and the bending positioning core extends out of the bending mounting plate when it is in the first position to position the long section of the spring hook to be processed.

[0008] As a further improvement of the present invention, the bending and clamping mechanism includes a bending and clamping drive and a bending and clamping member. The bending and clamping drive is connected to the bending and clamping member through a bending transmission assembly and presses the long section of the spring hook to be processed when the bending positioning core is in the first position so that the long section of the spring hook to be processed is limited.

[0009] As a further improvement of the present invention, the bending transmission assembly includes a bending support rod, the bending clamping piece is hinged to the bending support rod, and the bending clamping driving piece drives the bending clamping piece to move linearly through the swing of the bending support rod.

[0010] As a further improvement of the present invention, a bending fixing plate is provided on the bending frame, and a bending loading device and a bending unloading device are provided on the bending fixing plate. The bending loading device includes a bending picking mechanism and a bending feeding mechanism. The bending picking mechanism has a first position for picking up materials from a clamping device and a second position for facilitating the bending feeding mechanism to pick up materials. The bending feeding mechanism has a first position for picking up materials from the bending picking mechanism and a second position for sending the long section to be processed to the bending fixing device. The bending unloading device has a first position for taking the material processed by the bending device from the bending fixing device and a second position for unloading the material.

[0011] As a further improvement of the present invention, a bending movable plate and a loading and unloading driving member are provided on the bending fixed plate, the bending unloading device and the bending material picking mechanism are both arranged on the bending movable plate, and the loading and unloading driving member is connected to the bending movable plate and enables the bending unloading device and the bending material picking mechanism to change their positions synchronously.

[0012] As a further improvement of the present invention, it also includes a bending unlocking device for driving the clamping device to unlock, and the bending unlocking device is arranged on the bending material taking mechanism and / or the bending frame.

[0013] As a further improvement of the present invention, the bending frame is provided with a positioning lifter and a positioning pusher, the bending positioning core is provided on the positioning lifter, the positioning pusher is provided with a positioning inclined hole, the positioning lifter is provided with a positioning pulley inserted into the positioning inclined hole, and the positioning drive component drives the positioning lifter to move vertically up and down by driving the positioning pusher to move horizontally.

[0014] The invention has the beneficial effect that, by positioning the inclined groove at the tail of the long section of the spring hook to be processed and then bending it, the product deformation after processing is small and the product processing precision is high. The invention also has the advantages of simple structure, convenient assembly, reliable action and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0016] Attached Figure 2 For attachment Figure 1 Schematic diagram of the structure in the other direction.

[0017] Attached Figure 3 For attachment Figure 2 A schematic diagram of the structure of the middle bending fixing plate 57.

[0018] Attached Figure 4 For attachment Figure 3 Schematic diagram of the explosion structure.

[0019] Attached Figure 5 For attachment Figure 1 A schematic diagram of the structure of the middle bending turntable 523.

[0020] Attached Figure 6 For attachment Figure 5 Schematic diagram of the explosion structure.

[0021] Attached Figure 7 For attachment Figure 2 Schematic diagram of the exploded structure of the middle bending positioning mechanism 54.

[0022] Attached Figure 8 It is a schematic diagram of the structure of the embodiment of the present invention during processing.

[0023] Attached Fig. 9 It is a schematic structural diagram of a spring hook long section to be processed before processing according to an embodiment of the present invention.

[0024] Attached Fig.10 It is a schematic structural diagram of the long section of the spring hook after processing according to an embodiment of the present invention.

[0025] In the figure, 51, bending frame; 52, bending device; 521, bending mechanism; 5211, bending support frame; 5212, bending member; 52121, bending groove; 5213, bending guide member; 5214, bending guide cavity; 522, bending drive member; 523, bending turntable; 53, bending fixing device; 54, bending positioning mechanism; 541, bending positioning core; 5411, positioning column; 542, positioning drive member; 55, bending clamping mechanism; 551, bending clamping drive member; 552, bending clamping Parts; 553, bending transmission assembly; 554, bending support rod; 56, bending mounting plate; 561, bending positioning plate; 57, bending fixing plate; 571, bending loading device; 5711, bending taking mechanism; 5712, bending feeding mechanism; 572, bending unloading device; 573, bending movable plate; 574, loading and unloading driving parts; 575, bending unlocking device; 581, positioning lifter; 5811, positioning pulley; 582, positioning pusher; 5821, positioning inclined hole; 583, positioning lifter. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are further described below in conjunction with the accompanying drawings:

[0027] Depend on Figure 1 Combination Figure 2-10As shown, a reverse bending device for a spring hook section comprises a bending frame 51, on which a bending device 52 and a bending fixing device 53 are provided, wherein the bending fixing device 53 comprises a bending positioning mechanism 54 for positioning the spring hook section to be processed and a bending clamping mechanism 55 for clamping the spring hook section to be processed during bending processing, wherein the bending positioning mechanism 54 comprises a bending positioning core 541 and a positioning driving member 542, wherein the bending positioning core 541 comprises a positioning column 5411 which is inserted into the tail oblique groove of the spring hook section to be processed and is used to position the spring hook section to be processed, wherein the bending positioning core 541 The invention has a first position driven by a positioning driving member 542 for positioning the long section of the spring hook to be processed and a second position for facilitating the taking and placing of the long section of the spring hook to be processed; the bending clamping mechanism 55 is used to limit the long section of the spring hook to be processed when the bending positioning core 541 is in the first position, and the bending device 52 includes a bending mechanism 521 and a bending driving member 522, and the bending driving member 522 is connected to the bending mechanism 521 and drives the bending mechanism 521 to drive the long section of the spring hook to be processed to perform reverse bending processing with the positioning column 5411 as the support point and the outer surface of the bending positioning core 541 as the support surface. The beneficial effect of the present invention is that the bending processing is performed after the tail inclined groove of the long section of the spring hook to be processed is positioned, and the deformation of the processed product is small and the product processing accuracy is high. The present invention also has the advantages of simple structure, convenient assembly, reliable operation, and long service life.

[0028] The bending driving member 522 is connected to the bending mechanism 521 through the bending turntable 523 and drives the bending member 5212 to rotate. The bending mechanism 521 includes a bending support frame 5211, and the bending support frame 5211 is provided with a bending member 5212 for driving the spring hook long section to be processed to bend. Specifically, the bending support frame 5211 is provided with a bending guide member 5213, and the bending guide member 5213 is provided with a bending guide cavity 5214 for accommodating the head of the spring hook long section. The bending member 5212 is a bending wheel, which is provided on the bending support frame 5211 and rotates with the bending support frame 5211. The outer surface of the bending wheel is provided with a bending groove 52121 for pressing the spring hook long section to be processed. The setting of the bending guide can accommodate and make way for the head (small semicircle) of the spring hook section, which is convenient for reliable connection, and prevents the spring hook section from moving vertically during bending, thus playing a role of limiting. The setting of the bending wheel can reduce the resistance during bending, and at the same time, it has little damage to the outer surface of the spring hook section.

[0029] The bending frame 51 is provided with a bending mounting plate 56, and the bending mechanism 521 and the bending clamping mechanism 55 are both arranged above the bending mounting plate 56. The bending mounting plate 56 is provided with a bending positioning piece 561 for positioning the long section of the spring hook to be processed. When the bending positioning core 541 is in the first position, it extends out of the bending mounting plate 56 to position the long section of the spring hook to be processed. Specifically, the bending positioning piece is arranged on the bending mounting plate through the bending inner core, and the bending positioning core is arranged in the bending inner core and cooperates with the bending inner core in sliding. In this way, when the bending positioning core is in the second position, the bending loading device and the bending unloading device can load and unload materials reliably and conveniently, and at the same time, the bending loading device will be limited by the bending positioning piece after loading is in place, so that the loading and unloading of products is convenient and reliable.

[0030] The bending clamping mechanism 55 includes a bending clamping driving member 551 and a bending clamping member 552. The bending clamping driving member 551 is connected to the bending clamping member 552 through a bending transmission assembly 553 and presses the long section of the spring hook to be processed when the bending positioning core 541 is in the first position so that the long section of the spring hook to be processed is limited. Specifically, the bending transmission assembly 553 includes a bending support rod 554. The bending clamping member 552 is hinged to the bending support rod 554. The bending clamping driving member 551 drives the bending clamping member 552 to move linearly through the swing of the bending support rod 554. The setting of the bending clamping mechanism enables the long section of the spring hook to be processed to be reliably limited after the product is loaded in place, so as to avoid the displacement of the long section of the spring hook to be processed during the bending action and affect the product processing effect. More specifically, the swing of the bending support rod 554 drives the bending clamping member 552 to move linearly. When the bending clamping mechanism is in the clamping state, the bending support rod and the bending clamping piece are arranged in a straight line or a similar straight line. Such a structure makes it difficult for the product to loosen due to external force after clamping, the product is clamped reliably, and the bending process is convenient.

[0031] The bending frame 51 is provided with a bending fixing plate 57, and the bending fixing plate 57 is provided with a bending loading device 571 and a bending unloading device 572. The bending loading device 571 includes a bending material picking mechanism 5711 and a bending feeding mechanism 5712. The bending material picking mechanism 5711 has a first position for picking up materials from a clamping device and a second position for facilitating the bending feeding mechanism 5712 to pick up materials. The bending feeding mechanism 5712 has a first position for picking up materials from the bending material picking mechanism 5711 and a second position for sending the long section to be processed to the bending fixing device 53. The bending unloading device 572 has a first position for removing the material processed by the bending device 52 from the bending fixing device 53 and a second position for unloading the material. Specifically, the bending fixed plate 57 is provided with a bending movable plate 573 and a loading and unloading driving member 574, the bending unloading device 572 and the bending material taking mechanism 5711 are both provided on the bending movable plate 573, and the loading and unloading driving member 574 is connected to the bending movable plate 573 and enables the bending unloading device 572 and the bending material taking mechanism 5711 to change positions synchronously. Such a structure enables the bending unloading device 572 and the bending material taking mechanism 5711 to move synchronously when the loading and unloading driving member is driven, and they usually have a bending lifting driving member to drive the up and down movement, material taking and unloading, with better synchronization performance and reduced processing time.

[0032] The present invention also includes a bending unlocking device 575 for driving the clamping device to unlock, and the bending unlocking device 575 is arranged on the bending material taking mechanism 5711 and / or the bending frame 51. Such a structure facilitates driving the clamping device to unlock, and facilitates continuous and reliable processing of products.

[0033] The bending frame 51 is provided with a positioning lifter 581 and a positioning pusher 582, the bending positioning core 541 is provided on the positioning lifter 581, the positioning pusher 582 is provided with a positioning inclined hole 5821, the positioning lifter 581 is provided with a positioning pulley 5811 inserted into the positioning inclined hole 5821, and the positioning drive 542 drives the positioning lifter 581 to move vertically up and down by driving the positioning pusher 582 to move horizontally and linearly. In this way, the bending positioning core can move up and down quickly and reliably, so that the bending positioning core will not interfere with the material discharging during discharging, and can reliably cooperate with the bending clamping mechanism to achieve clamping positioning during bending. Of course, in the actual production process, the bending positioning core can also be directly driven by the driving member to slide up and down. The bending positioning core and the clamping member of the bending clamping mechanism can move relative to each other to ensure reliable feeding without interference, reliable limiting of the processing process, and convenient and reliable discharging.

[0034] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] Technical personnel should note that although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention, and any modification using the inventive concept will be included in the scope of protection of this patent.

Claims

1. A reverse bending device for a long section of a spring hook, comprising a bending frame (51), characterized in that The bending frame (51) is provided with a bending device (52) and a bending fixing device (53). The bending fixing device (53) comprises a bending positioning mechanism (54) for positioning the spring hook section to be processed and a bending clamping mechanism (55) for clamping the spring hook section to be processed during bending. The bending positioning mechanism (54) comprises a bending positioning core (541) and a positioning driving member (542). The bending positioning core (541) comprises a positioning column (5411) which is inserted into the tail oblique groove of the spring hook section to be processed and is used to position the spring hook section to be processed. The bending positioning core (541) has a positioning member (5411) which is driven by the positioning driving member (542). 2) driving a first position for positioning the spring hook segment to be processed and a second position for facilitating the placement of the spring hook segment to be processed; the bending clamping mechanism (55) is used to limit the position of the spring hook segment to be processed when the bending positioning core (541) is in the first position; the bending device (52) comprises a bending mechanism (521) and a bending driving member (522); the bending driving member (522) is connected to the bending mechanism (521) and drives the bending mechanism (521) to drive the spring hook segment to be processed to perform reverse bending processing on the spring hook segment to be processed with the positioning column (5411) as a support point and the outer surface of the bending positioning core (541) as a support surface; The bending driving member (522) is connected to the bending mechanism (521) via a bending turntable (523) and drives the bending member (5212) to rotate. The bending mechanism (521) comprises a bending support frame (5211). The bending support frame (5211) is provided with a bending member (5212) for driving the spring hook long section to be processed to bend. The bending support frame (5211) is provided with a bending guide member (5213). The bending guide member (5213) is provided with a bending guide cavity (5214) for accommodating the head of the spring hook long section. The bending member (5212) is a bending wheel. The bending wheel is provided with a bending guide cavity (5214) for accommodating the head of the spring hook long section. The bending wheel is mounted on a bending support frame (5211) and is rotatably matched with the bending support frame (5211); a bending groove (52121) is provided on the outer surface of the bending wheel for pressing the long section of the spring hook to be processed; a bending mounting plate (56) is provided on the bending frame (51); the bending mechanism (521) and the bending clamping mechanism (55) are both arranged above the bending mounting plate (56); a bending positioning piece (561) is provided on the bending mounting plate (56) for positioning the long section of the spring hook to be processed; and the bending positioning core (541) extends out of the bending mounting plate (56) when it is in the first position for positioning the long section of the spring hook to be processed.

2. A reverse bending device for a long section of a spring hook according to claim 1, characterized in that The bending and clamping mechanism (55) comprises a bending and clamping driving member (551) and a bending and clamping member (552). The bending and clamping driving member (551) is connected to the bending and clamping member (552) via a bending transmission assembly (553) and presses the long section of the spring hook to be processed to limit the position when the bending positioning core (541) is in the first position.

3. A reverse bending device for a long section of a spring hook according to claim 2, characterized in that The bending transmission assembly (553) comprises a bending support rod (554), the bending clamping member (552) is hinged to the bending support rod (554), and the bending clamping driving member (551) drives the bending clamping member (552) to move linearly through the swing of the bending support rod (554).

4. The reverse bending device for the long section of the spring hook according to claim 1, characterized in that The bending frame (51) is provided with a bending fixing plate (57), and the bending fixing plate (57) is provided with a bending loading device (571) and a bending unloading device (572). The bending loading device (571) includes a bending material taking mechanism (5711) and a bending feeding mechanism (5712). The bending material taking mechanism (5711) has a first position for taking material from a clamping device and a second position for facilitating the bending feeding mechanism (5712) to take material. The bending feeding mechanism (5712) has a first position for taking material from the bending material taking mechanism (5711) and a second position for sending the long section to be processed to the bending fixing device (53). The bending unloading device (572) has a first position for taking material processed by the bending device (52) from the bending fixing device (53) and a second position for unloading the material.

5. The reverse bending device for the long section of the spring hook according to claim 4, characterized in that The bending fixed plate (57) is provided with a bending movable plate (573) and a loading and unloading driving member (574); the bending unloading device (572) and the bending material taking mechanism (5711) are both provided on the bending movable plate (573); the loading and unloading driving member (574) is connected to the bending movable plate (573) and enables the bending unloading device (572) and the bending material taking mechanism (5711) to change positions synchronously.

6. The reverse bending device for the long section of the spring hook according to claim 4, characterized in that It also includes a bending unlocking device (575) for driving the material clamping device to unlock, wherein the bending unlocking device (575) is arranged on the bending material taking mechanism (5711) and / or the bending frame (51).

7. The reverse bending device for the long section of the spring hook according to claim 1, characterized in that The bending frame (51) is provided with a positioning lifter (581) and a positioning pusher (582); the bending positioning core (541) is provided on the positioning lifter (581); the positioning pusher (582) is provided with a positioning inclined hole (5821); the positioning lifter (581) is provided with a positioning pulley (5811) inserted into the positioning inclined hole (5821); the positioning driving member (542) drives the positioning pusher (582) to move horizontally and linearly, driving the positioning lifter (581) to move vertically up and down.

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