Feeding frame structure of cold header

Abstract

The utility model discloses a feeding frame structure of a cold header, belongs to the technical field of cold headers, and solves the problems that after a bar is cut for a long time, a cutter of a cutting unit is inevitably damaged, so that the bar is gradually difficult to be completely cut off at the beginning, or obvious hindrance is generated during cutting off, and the cutting efficiency of the bar is reduced. In this way, the problem that the quality of fastener products finally produced by the cold header is obviously reduced can be caused. Comprising a supporting arm, a connecting rod rotationally connected to the top of the supporting arm, and a fixing base arranged on a lathe bed. When the bar cutting-off device works, the rotating rod drives the sliding plate to slide, the guide column rotates and drives the guide connecting block to move in the moving through groove, then the top shaft and the tool apron move in a reciprocating mode, and bar cutting-off is achieved. When the cutter is worn, an operator holds the handle, presses the top shaft downwards, compresses the spring and rotates the handle to enable the limiting block to leave the connecting rod, the cutter is replaced and installed, the connecting rod drives the cutter to reset, the limiting block is limited again, the operator is prevented from stretching hands into the lathe bed, and safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to cold header technology field especially relates to a cold header feeding frame structure. BACKGROUND

[0002] Cold header is a kind of efficient metal forming equipment, mainly used for plastic deformation to metal material at normal temperature, produces bolt, nut, screw and other fasteners. It passes through cold heading process, utilizes die to exert pressure to metal blank, makes it produce plastic deformation in mould cavity, to obtain the shape and size required. Cold header has the characteristics of multi-station, automation, can realize continuous production, greatly improves production efficiency. The product processed has high strength, good surface quality, high dimensional accuracy, and is widely used in automobile, building, hardware and other industries. Modern cold header has developed multiple models and series, and the equipment performance is reliable, suitable for mass production.

[0003] For example, the technical key points of a cold header with application number CN202310642222.2 are as follows: a bed body; a feeding unit installed on the bed body for conveying bar stock; a cutting unit installed on the bed body for cutting off the bar stock conveyed by the feeding unit into the bed body; a main slide table and a main die box arranged oppositely, the main slide table being slidingly connected to the bed body, and the main die box being fixedly connected to the bed body; a transmission unit including: a main crankshaft rotatingly connected to the bed body and drivingly connected to an external motor, a first connecting rod having one end rotatingly connected to the eccentric part of the main crankshaft; a first connecting shaft fixedly connected to the bed body; a second connecting rod arranged above the first connecting rod, one end of the second connecting rod rotatingly connected to the first connecting shaft; a second connecting shaft, the other end of the first connecting rod rotatingly connected to the second connecting shaft, and the other end of the second connecting rod rotatingly connected to the second connecting shaft; and a pushing rod, one end of the pushing rod rotatingly connected to the second connecting shaft, and the other end of the pushing rod rotatingly connected to the main slide table, the pushing rod being used to push the main slide table to slide relative to the bed body, and the main slide table being used to approach the main die box to cold heading the bar stock; and a clamping unit installed on the bed body for clamping the bar stock to different stations.

[0004] In the above-mentioned scheme, the cutting unit is arranged in the bed body, and the cutter is also in the bed body. After cutting the bar stock for a long time, the cutter of the cutting unit will inevitably be damaged, which makes it difficult to completely cut off the bar stock, or there will be obvious obstacles when cutting, which will cause a significant quality decline problem of the fastener product finally produced by the cold header.

[0005] Therefore, a cold header feeding frame structure is proposed to solve or alleviate the above-mentioned problems. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the shortcomings in the prior art and provides a cold header feeding frame structure.

[0007] To achieve the above object, the utility model adopts the following technical scheme:

[0008] A cold header feeding frame structure, including support arm, connecting rod rotationally connected on the top of support arm, and fixed seat for setting on the bed, the one end of connecting rod away from support arm is detachably connected with cutter, the fixed seat is provided with movable limit block, when the connecting rod rests on the fixed seat, the limit block can be deflected to above the limit block and abut against the connecting rod.

[0009] Preferably, the top surface of the fixed seat is fixedly connected with a limit plate parallel to the side wall of the rotating rod, when the connecting rod rests on the fixed seat, the limit plate is arranged in close contact with the side wall of the connecting rod.

[0010] Preferably, a rotating shaft is rotationally arranged on the fixed seat, the upper end of the rotating shaft is hingedly connected with the limit block, when the limit block abuts against the connecting rod, the hinged portion of the limit block extends in the direction away from the connecting rod to form an extension, an elastic member for applying upward force to the extension is arranged on the fixed seat.

[0011] Preferably, the elastic member includes a connecting sleeve fixedly connected on the fixed seat and in the shape of a ring, a vertical top rod slidingly connected in the connecting sleeve and abutting against the bottom surface of the extension, a spring fixedly connected between the lower end of the top rod and the fixed seat in the connecting sleeve.

[0012] Preferably, a handle is fixedly connected with the extension away from the rotating shaft.

[0013] Preferably, the cutter is detachably connected on the one end of the connecting rod away from the support arm by bolts.

[0014] Preferably, it further includes a C-shaped sliding seat, a top plate fixedly connected on the top surface of the sliding seat, a guide connecting block, a guide column fixedly connected on the bottom surface of the guide connecting block and in the shape of a cylinder, an end plate fixedly connected on one side of the sliding seat, a connecting seat fixedly connected on the side of the end plate away from the sliding seat, and a sliding plate, a Z-shaped staggered slot is formed on the top surface of the sliding plate, the guide column is slidingly connected in the staggered slot, a moving through slot is formed on the top surface of the top plate along the length direction and penetrating through the bottom surface, the guide connecting block is slidingly connected in the moving through slot, the support arm is fixedly connected with the end plate and the sliding seat through side guide rods, a sliding slot is formed on the one end of the top plate away from the support arm, a through hole penetrating through the end surface of the top plate is formed on the end portion of the sliding slot, an intermediate guide rod penetrating through the through hole into the sliding slot is fixedly connected with the support arm, a top shaft in the shape of a circular tube and sleeved outside the intermediate guide rod is slidingly connected in the sliding slot, a tool seat is fixedly connected on the one end of the top shaft away from the top plate.

[0015] Preferably, a recessed groove is formed on one end of the sliding plate, a rotating rod is rotationally connected in the recessed groove.

[0016] The utility model has the following beneficial effects:

[0017] The utility model discloses when working, the sliding plate is driven to slide by the rotating lever, the guide post rotates and drives the guide link to displace in the moving groove, and then the top shaft and the tool holder reciprocate displacement, realize the bar cutting. When the cutting tool wears, the operator holds the handle, presses the top shaft, compresses the spring, rotates the handle and makes the limiting block leave the connecting rod, replaces the cutting tool, after installation, the connecting rod drives the cutting tool to reset, and the limiting block reposition, avoid the operator to reach into the bed body, ensure safety. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be to the embodiment needed to use the drawing briefly introduced, it should be understood, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation of the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0019] Figure 1 For the structure diagram of the utility model Figure 1 ;

[0020] Figure 2 For the structure diagram of the utility model Figure 2 ;

[0021] Figure 3 For the utility model's explosion map.

[0022] 1, sliding seat;2, end plate;3, top plate;4, connecting seat;5, support arm;6, side guide rod;7, intermediate guide rod;8, moving groove;9, guide link;10, guide column;11, top shaft;12, tool holder;13, connecting rod;14, cutting tool;15, fixed seat;16, rotating shaft;17, limiting block;18, handle;19, connecting sleeve;20, top rod;21, limiting plate;22, rotating lever;23, sliding plate;24, staggered slot. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clearly, the following will be to the technical scheme in the utility model embodiment in the utility model embodiment, clear, complete, it is obvious, the described embodiment is the part of the embodiment of the utility model, instead of all the embodiments. The components of the utility model embodiment described and shown in the drawing here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0025] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0026] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly understood by those skilled in the art, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0027] In addition, the terms "first", "second", "third", and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] A cold header feeding frame structure, as shown in Figures 1 to 3 It includes a support arm 5, a connecting rod 13 rotatably connected to the top of the support arm 5, a fixed seat 15 that can be provided on the bed, a C-shaped sliding seat 1, a top plate 3 fixedly connected to the top surface of the sliding seat 1, a guide connecting block 9, a guide column 10 fixedly connected to the bottom surface of the guide connecting block 9 and in a cylindrical shape, an end plate 2 fixedly connected to one side of the sliding seat 1, a connecting seat 4 fixedly connected to the side of the end plate 2 away from the sliding seat 1, and a sliding plate 23.

[0030] A cutter 14 is detachably connected to the end of the connecting rod 13 away from the support arm 5, and specifically, the cutter 14 is detachably connected to the end of the connecting rod 13 away from the support arm 5 through bolts.

[0031] A movable limiting block 17 is arranged on the fixed seat 15, and when the connecting rod 13 is placed on the fixed seat 15, the limiting block 17 can be deflected above the limiting block 17 and abut against the connecting rod 13.

[0032] A limiting plate 21 parallel to the side wall of the rotating rod 22 is fixedly connected to the top surface of the fixed seat 15, and when the connecting rod 13 is placed on the fixed seat 15, the limiting plate 21 is arranged in close contact with the side wall of the connecting rod 13.

[0033] In actual work, the sliding plate 23 is driven by the rotating rod 22 to slide in the sliding seat 1 along the length direction of the sliding plate 23, so that the cylindrical guide column 10 can smoothly rotate in the staggered groove 24, and the guide connecting block 9 can be displaced in the moving through groove 8, and the guide connecting block 9 can reciprocatingly displace under the guidance of the moving through groove 8 and the intermediate guide rod 7, and the top shaft 11 can reciprocatingly displace together with the guide connecting block 9, and the cutter holder 12 at the end of the top shaft 11 can also reciprocatingly displace, so that the distance between the cutter holder 12 and the cutter 14 changes, and the bar between the cutter holder 12 and the cutter 14 can be properly cut off under the cooperation of the cutter holder 12 and the cutter 14.

[0034] When the cutting knife 14 is worn, the operator can hold the handle 18, and the handle 18 drives the extension downward, so that the extension can be deflected downward relative to the rotating shaft 16, the extension can press the top rod 20 downward, so that the spring in the connecting sleeve 19 is compressed and accumulates elastic potential energy, then the handle 18 is held to drive the extension and the rotating shaft 16 to rotate, the rotating shaft 16 rotates along the central axis, so that the limiting block 17 can be separated from the top of the connecting rod 13, so that the limiting block 17 cannot block the displacement of the connecting rod 13, then the connecting rod 13 drives the cutting knife 14 to deflect, so that the cutting knife 14 is separated from the bed, so as to replace the cutting knife 14, when the cutting knife 14 is replaced, only the bolt is loosened, and the cutting knife 14 is taken off from the connecting rod 13 for replacement;

[0035] After the installation of the cutting knife 14 is completed, only the connecting rod 13 drives the cutting knife 14 to return to the bed, until the connecting rod 13 is placed on the fixed seat 15 and abuts against the limiting plate 21, then the handle 18 is held to drive the extension and the limiting block 17 to be reversely deflected, so that the limiting block 17 is placed on the top of the connecting rod 13 for limiting, so that the cutting knife 14 can perform the punching action on the bar again, so that the operator does not need to put his hand into the bed to repair and replace the cutting knife 14, and the dangerous situation is avoided.

[0036] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A feed rack structure for a cold header, characterized by, The utility model provides a cutting device for bed, including support arm (5), connecting rod (13) of rotary connection in support arm (5) top, and the fixed seat (15) that can be used to set on the bed body, the one end of connecting rod (13) away from support arm (5) is detachably connected with cutting knife (14), the fixed seat (15) is provided with movable limit block (17), when connecting rod (13) rests on fixed seat (15), limit block (17) can be deflected to limit block (17) above and resist connecting rod (13).

2. A feed block structure for a cold header as defined in claim 1, wherein The top surface of the fixed seat (15) is fixedly connected with a limiting plate (21) parallel to the side wall of the rotating rod (22), and when the connecting rod (13) rests on the fixed seat (15), the limiting plate (21) is arranged in close contact with the side wall of the connecting rod (13).

3. A feed block structure for a cold header as defined in claim 2, wherein, The fixed seat (15) is rotatably provided with a rotating shaft (16), and the upper end of the rotating shaft (16) is hingedly connected with the limit block (17). When the limit block (17) abuts against the connecting rod (13), the hinged portion of the limit block (17) extends in the direction away from the connecting rod (13) to form an extension portion. The fixed seat (15) is provided with an elastic member for applying an upward force to the extension portion.

4. A feed block structure for a cold header as defined in claim 3, wherein The elastic member includes a connecting sleeve (19) fixedly connected to the fixed seat (15) and in the shape of a ring, a top rod (20) vertically and slidably connected in the connecting sleeve (19) and capable of abutting against the bottom surface of the extension portion, and a spring fixedly connected between the lower end of the top rod (20) and the fixed seat (15) and located in the connecting sleeve (19).

5. A feed block structure for a cold header as defined in claim 4, wherein, The extension portion is fixedly connected with a handle (18) away from the rotating shaft (16).

6. A feed block structure for a cold header as defined in claim 1, wherein, The cutting knife (14) is detachably connected to the one end of the connecting rod (13) away from the support arm (5) by bolts.

7. A feed block structure for a cold header as defined in claim 1, wherein, It also includes a C-shaped sliding seat (1), a top plate (3) fixedly connected to the top surface of the sliding seat (1), a guide connecting block (9), a guide column (10) fixedly connected to the bottom surface of the guide connecting block (9) and in the shape of a cylinder, an end plate (2) fixedly connected to one side of the sliding seat (1), a connecting seat (4) fixedly connected to the side of the end plate (2) away from the sliding seat (1), and a sliding plate (23). The top surface of the sliding plate (23) is provided with a Z-shaped staggered groove (24). The guide column (10) is slidably connected in the staggered groove (24). The top surface of the top plate (3) is provided with a moving through slot (8) extending through the bottom surface along the length direction. The guide connecting block (9) is slidably connected in the moving through slot (8). The support arm (5) is fixedly connected with the end plate (2) and the sliding seat (1) through side guide rods (6). The one end of the top plate (3) away from the support arm (5) is provided with a sliding groove. The end portion of the sliding groove is provided with a through hole extending through the end surface of the top plate (3). The support arm (5) is fixedly connected with a middle guide rod (7) extending through the through hole into the sliding groove. The sliding groove is slidably connected with a top shaft (11) in the shape of a circular tube and sleeved outside the middle guide rod (7). The one end of the top shaft (11) away from the top plate (3) is fixedly connected with a knife seat (12).

8. A feed block structure for a cold header as defined in claim 7, wherein, The one end of the sliding plate (23) is provided with a recessed groove. The recessed groove is rotatably connected with a rotating rod (22).

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