Stud bolt punching equipment

Abstract

The utility model relates to accessories or devices specially suitable for thread cutting machine tools or devices, in particular to double-end bolt punching equipment. The double-end bolt punching equipment comprises a horizontal workbench, a corresponding punching mechanism and a screw clamp are arranged on the corresponding side, the screw clamp comprises a punching positioning base and a screw pressing mechanism, a punching positioning groove is formed in the punching positioning base, a stepping type rod conveying device for conveying double-end bolts from back to front is arranged on the workbench, and the screw pressing mechanism is arranged on the workbench. The stepping type rod feeding device comprises a fixed seat and a movable seat, a screw supporting groove for positioning the stud is formed in the fixed seat, and a screw limiting groove corresponding to the screw supporting groove is formed in the movable seat. The punching positioning groove is composed of one set of screw bearing grooves in the fixing base or is parallel to one set of screw bearing grooves in the fixing base in a left-right mode. The double-end bolt punching device solves the problems that double-end bolt punching equipment is low in automation degree, large in labor intensity of workers and poor in safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to the accessory or device specially suitable for thread cutting machine tool or device, particularly relates to a double -end bolt punching equipment. BACKGROUND

[0002] The wind turbine blade converts wind energy into mechanical energy in the rotating process, and drives the generator to generate electricity. The wind turbine blade is an important component of the wind turbine generator set. The double-end bolt is the core component connecting the wind turbine blade and the hub, with a tensile strength of up to 1200MPa. Its bearing performance directly affects the service life of the wind turbine generator set.

[0003] As shown in Figure 1 The double-end bolt 10 generally refers to a threaded fastener with threads at both ends. Its production generally includes processes such as heat treatment, flaw detection, blanking, turning, marking, processing hexagonal hole, thread rolling, surface treatment, and packaging. The material is generally 42CrMoA, the performance grade is generally 10.9 and 12.9, the length is 300-1000mm, and the length direction is divided into two unequal-length threaded sections 103, a middle rod 101, and a variable-diameter section 102 between the middle rod 101 and the threaded section 103. The diameter of the threaded section 103 is greater than that of the middle rod 101, and the variable-diameter section 102 is conical, serving as a transition between the middle rod 101 and the threaded section 103. During installation, workers use a hex wrench or other tools to screw the double-end bolt into the wind turbine blade through the internal hexagonal hole at the end.

[0004] Currently, the internal hexagonal hole at the end of the double-end bolt is processed by electric spark machining or cold extrusion machining using large stamping equipment. The electric spark machining method has the problems of low processing efficiency and high processing cost, and is not suitable for mass production of double-end bolts. Therefore, in engineering practice, cold extrusion punching is more commonly used, which requires personnel to place the double-end bolt processing bar under the stamping machine. Although the efficiency is improved compared to electric spark machining, the automatic degree is low, the labor intensity of workers is large, and the safety is poor. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a double-end bolt punching equipment to solve the problem of low automation, high labor intensity of workers, and poor safety caused by the need for continuous manual feeding and taking of the double-end bolt during end punching.

[0006] In order to solve the above problems, the double-end bolt punching equipment adopts the following technical scheme: the double-end bolt punching equipment comprises a horizontal workbench, corresponding punching mechanisms are arranged on the left side and / or the right side of the workbench, a screw rod clamp corresponding to a punch is arranged on the workbench, the screw rod clamp comprises a punching positioning base and a screw rod pressing mechanism, a punching positioning groove is arranged on the punching positioning base, a step type screw rod feeding device for conveying double-end bolts from back to front is arranged on the workbench, the step type screw rod feeding device comprises a fixed seat and a movable seat, a screw rod supporting groove for positioning the double-end bolt is arranged on the fixed seat, a screw rod limiting groove corresponding to the screw rod supporting groove is arranged on the movable seat, and a driving mechanism is in transmission connection with the movable seat, the driving mechanism is used for driving the movable seat to reciprocatingly lift and translate so as to convey the double-end bolt according to a set step distance, and the punching positioning groove is composed of one group of screw rod supporting grooves on the fixed seat or is arranged in parallel with one group of screw rod supporting grooves on the fixed seat.

[0007] Further, one end of the punching positioning groove close to the middle of the workbench in the left-right direction is provided with an enlarged section matched with at least a part of the variable diameter section of the double-end bolt.

[0008] Further, a lining plate is arranged on the punching positioning base, and the punching positioning groove is arranged on the lining plate.

[0009] Further, a concave-convex matching structure is arranged between the side of the lining plate away from the punching positioning groove and the punching positioning base, and the concave-convex matching structure is used for left-right limiting matching.

[0010] Further, a lower rod mechanism in connection with the step type screw rod feeding device is arranged at the tail of the step type screw rod feeding device, the lower rod mechanism is a lower rod conveying belt, and a convex rib for stopping cooperation with the double-end bolt is arranged on the belt surface of the lower rod conveying belt.

[0011] Further, a marking positioning clamp and a marking mechanism are further arranged on the workbench, the marking positioning clamp comprises a marking positioning base, a marking positioning groove is arranged on the marking positioning base, and the marking positioning groove is composed of one group of screw rod supporting grooves on the fixed seat or is arranged in parallel with one group of screw rod supporting grooves on the fixed seat.

[0012] Further, a feeding rod sliding table is arranged on the side of the workbench away from the lower rod mechanism, a rod stopping structure is arranged at the lower end of the feeding rod sliding table, and the step type screw rod feeding device is in connection with the feeding rod sliding table.

[0013] Further, a rod taking opening is arranged at the lower end of the feeding rod sliding table, and the movable seat of the step type screw rod feeding device extends into the rod taking opening to pick up the corresponding double-end bolt.

[0014] Further, the lower end of the feeding rod sliding table is provided with an identification device for identifying the end to be processed of the stud bolt.

[0015] Further, the driving mechanism of the movable seat comprises a lifting driver and a translation driver, one of which is arranged on the output path of the other to form a two-stage driving mechanism, the lifting driver is used to drive the movable seat upward to drive the stud bolt to a height above the fixed seat and lower the movable seat to drop the stud bolt on the fixed seat, and the translation driver is used to reciprocate in the feeding direction, and the reciprocation length is equal to the set step distance.

[0016] Beneficial effects: the stud bolt punching equipment of the utility model is an improved invention. Specifically, the stud bolt punching equipment of the utility model adopts a horizontal workbench, and the stud bolt is punched in a horizontal placement state. Since a stepping type rod feeding device is adopted, the movable seat of the stepping type rod feeding device can transfer the stud bolt on the fixed seat downstream according to a set step distance under the action of the driving mechanism thereof. Since the punching positioning groove is composed of or arranged side by side with one group of screw rod supporting grooves on the fixed seat, each stud bolt transferred can be transferred in the punching positioning groove. In this process, the stud bolt can be punched by a punch. In the punching process, the feeding of the stud bolt is completed by the stepping type rod feeding device, without manual intervention, thereby solving the problems of low automation degree, high labor intensity of workers and poor safety caused by the need for manual feeding and taking of the stud bolt during end punching of the stud bolt. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of a stud bolt;

[0018] Figure 2 is a use state view of one embodiment of the stud bolt punching equipment of the utility model;

[0019] Figure 3 is Figure 2 is a structural schematic view of the stud bolt punching equipment in another perspective of the use state thereof;

[0020] Figure 4 is Figure 2 is a side view of the stud bolt punching equipment in

[0021] Figure 5 is Figure 2 is a structural schematic view of the feeding rod sliding table in

[0022] Figure 6 is Figure 2 is a structural schematic view of the lower rod mechanism in

[0023] Figure 7 is Figure 2 the structural diagram of the workbench in the workbench;

[0024] Figure 8 is Figure 2 the structural diagram of the movable seat of the feeding rod device in the feeding rod device;

[0025] Figure 9 is Figure 2 the matching structure diagram of the movable seat of the feeding rod device and the workbench in the feeding rod device;

[0026] Figure 10 is the matching diagram of the lining plate and the punching positioning base.

[0027] In the figure: 1, rack; 111 sliding rail; 112, long hole; 2, feeding rod sliding table; 21, support plate; 22, limiting plate; 23, baffle; 24, identification device; 3, punching mechanism; 31, punching hydraulic cylinder; 32, punching box; 33, bolt positioning hole; 4, lower rod mechanism; 41, support frame; 42, conveying belt; 43, roller; 44, protruding rib; 5, step-by-step feeding rod mechanism; 51, fixed seat; 511, marking positioning base; 512, punching positioning base; 513, feeding support block; 514, progressive support block; 515, discharging support block; 516, support groove; 517, punching positioning groove; 518, fixed support block; 519, lining plate; 52, movable seat; 521, upper movable plate; 522, lower movable plate; 523, connecting rod; 524, support plate; 525, conveying groove; 526, transmission part; 527, inclined guide wall; 528, sliding block; 529, avoiding opening; 530, semicircular groove section; 531, enlarged section; 53, horizontal driving part; 54, vertical driving part; 6, marking push mechanism; 61, marking push cylinder; 62, marking push rod; 63, marking push support; 7, punching push mechanism; 71, punching push cylinder; 72, punching push rod; 73, punching push support; 8, marking clamping mechanism; 81, marking clamping cylinder; 82, marking clamping block; 9, punching clamping mechanism; 91, punching clamping cylinder; 92, punching clamping block; 10, double-headed bolt; 101, middle smooth rod; 102, variable diameter section; 103, threaded section; 11, marking mechanism; 12, guide plate. DETAILED DESCRIPTION

[0028] The features and performances of the utility model are further described in detail in combination with the embodiments.

[0029] The bottleneck of limiting the efficiency of the stud bolt punching at present is the feeding and discharging of the stud bolt 10, therefore, if the stud bolt 10 can be conveyed to the punching station one by one by the automatic equipment, and the punched stud bolt is automatically transferred to the downstream after the punching is completed, the bottleneck can be overcome, and the punching processing efficiency of the stud bolt 10 can be greatly improved. Based on the above idea, the step-by-step transmission mechanism is applied to the stud bolt punching device, and the two are integrated with each other, so that the technical scheme of the stud bolt punching equipment is provided.

[0030] Based on the above invention idea, one basic embodiment of the stud bolt punching equipment of the utility model is as follows: the stud bolt punching equipment comprises a rack 1, and a horizontal workbench is arranged on the rack 1. The so-called horizontal workbench is a conventional saying in the field of mechanical processing, that is, the workpiece to be processed is in a horizontal posture when being processed. In terms of the stud bolt 10, the horizontal posture is a horizontal posture.

[0031] A punching mechanism 3 is arranged on the right side of the workbench, and the function of the punching mechanism 3 is to punch the end of the horizontal stud bolt 10. As a common structure, the punching mechanism 3 comprises a punching hydraulic cylinder 31 and a punching box 32, wherein the punching hydraulic cylinder 31 is fixedly installed on the rack 1, the punching box 32 is fixedly installed on the piston rod of the punching hydraulic cylinder 31, and cooperates with the guide rod arranged on the workbench, and then is guided in the left-right direction and cooperates with the workbench guide, and the stud bolt positioning hole 33 for sleeving the end of the stud bolt 10 is arranged on the punching box 32, and the punching tool for punching the internal hexagonal hole of the stud bolt 10 is installed in the stud bolt positioning hole 33. As a structure matched with the punching mechanism 3, the punching push mechanism 7 is arranged on the left side of the workbench, the punching push mechanism 7 is opposite to the punching mechanism 3 in the left-right direction, and is used for pushing the stud bolt 10 during punching to provide the required reaction force during punching. The punching push mechanism 7 comprises a punching push cylinder 71, a punching push rod 72 and a punching push support 73, wherein the punching push cylinder 71 is fixed on the rack 1, the punching push support 73 is fixed on the workbench, the piston rod of the punching push cylinder 71 is connected with the punching push rod 72, the punching push rod 72 is located on the punching push support 73, and can move left and right on the punching push support 73 under the drive of the punching push rod 72.

[0032] In order to ensure the stability of the stud bolt 10 during the punching of the end of the stud bolt 10, a screw clamp, i.e. a punching clamping mechanism 9, is arranged on the workbench at the position corresponding to the punch of the punching mechanism, the punching clamping mechanism 9 comprises a punching positioning base 512 and a screw pressing mechanism, the punching positioning base 512 is provided with a punching positioning groove 517, and the screw pressing mechanism comprises a punching clamping cylinder 91 vertically fixedly arranged on the rack 1 and a punching clamping block 92 connected to the end of the piston rod of the punching clamping cylinder 91, the structure of the punching clamping block 92 is the same as that of the punching positioning base 512 and is arranged opposite to the punching positioning base 512. The piston rod of the punching clamping cylinder 91 extends downward to press and fix the stud bolt 10 on the punching positioning base.

[0033] In order to realize the automatic feeding and discharging of the stud bolt 10 to and from the punching mechanism during the punching of the stud bolt, a step-by-step rod feeding device 5 is arranged on the workbench, the step-by-step rod feeding device 5 is used to feed the stud bolt 10 from back to front. The so-called "step-by-step rod feeding device" means that the feeding of the stud bolt 10 is step-by-step, and each action will feed the stud bolt 10 a certain distance according to the set step distance, and this feeding mode can also be called "progressive feeding". In order to realize the step-by-step rod feeding, the step-by-step rod feeding device 5 comprises a fixed seat 51 and a movable seat 52, wherein the fixed seat 51 is provided with screw supporting grooves at equal intervals from front to back, the screw supporting grooves are used for radial positioning of the stud bolt 10, and the interval between adjacent screw supporting grooves is equal to the single-step distance of the above-mentioned "step", i.e. the set step distance. The movable seat 52 is provided with screw limiting grooves corresponding to the screw positioning grooves, which also play a role in radial positioning of the stud bolt 10. The movable seat 52 is drivingly connected with a driving mechanism, the driving mechanism is used to drive the movable seat 52 to reciprocatingly lift and translate to transfer the stud bolt 10 according to the set step distance. The lifting of the movable seat 52 is to lift the stud bolt 10 on the fixed seat 51, the forward movement of the movable seat 52 is to feed the lifted stud bolt 10 a set step distance backward, the lowering of the movable seat 52 is to place the stud bolt 10 fed a set step distance backward in the corresponding screw positioning groove on the fixed seat 51, and the backward movement of the movable seat 52 is to reset for the next work cycle. Of course, the lifting and forward movement mentioned above can be performed simultaneously or partially simultaneously, and the lowering and backward movement mentioned above can also be performed simultaneously, i.e. the movement of the movable seat 52 under the action of the driving mechanism can be a composite movement in two directions, and in this case, the driving mechanism of the movable seat 52 can adopt a parallelogram mechanism.

[0034] In order to match the operation of the punching mechanism 3 with the action of the stepping rod feeding mechanism 5, the punching positioning groove 517 is formed by one of the screw support grooves on the fixed base 51. Of course, in some cases, the punching positioning groove can also be arranged side by side with one of the screw support grooves on the fixed base 51. In terms of matching the punching mechanism 3 and the stepping rod feeding mechanism 5, these two structures constitute an equivalent structure.

[0035] Using the above-described embodiments, the stepping rod feeding device 5 in the double-ended bolt punching equipment of this utility model will cause the double-ended bolt 10 to be transferred through the punching positioning base 512 during the process of transmitting the double-ended bolt 10 backward. At this time of transfer, the punching mechanism 3 can complete the punching of the double-ended bolt 10. After the punching is completed, the stepping rod feeding device 5 will automatically transport the punched double-ended bolt forward, thereby realizing the fully automated operation of the double-ended bolt punching process, improving production efficiency and reducing the labor intensity of workers.

[0036] It should be noted that when describing the basic implementation of the double-headed bolt punching device of this utility model, the directions such as up, down, left, and right are mentioned. These directions do not refer to absolute directions, but to relative directions. For example, left and right can be interchanged, front and back can be interchanged, and left and right can be interchanged with front and back.

[0037] Given the structural characteristics of the double-ended bolt 10, such as Figure 1 As shown, the diameter of the intermediate rod 101 is smaller than the diameter of the threaded section 103. The variable diameter section 102 serves as a transition between the threaded section and the intermediate rod, and therefore has a frustum-shaped structure. The diameter of the end near the threaded section 103 is larger than the diameter of the end near the intermediate rod 101. Based on the above basic implementation, as a preferred embodiment, this utility model utilizes the shape of its variable diameter section 102 to change the method of fixing the intermediate rod 101 during the traditional machining of double-ended bolts to fixing its variable diameter section 102. By radially constraining the variable diameter sections at both ends, axial constraint can be achieved simultaneously, thereby achieving simultaneous axial and radial fixation of the double-ended bolt 10. This avoids axial displacement due to axial force during machining. To achieve the above effect, as... Figure 7 , 10 As shown, the punching positioning groove on the punching positioning base 512 has an enlarged section 531 at one end near the middle of the worktable in the left-right direction, which is adapted to at least a part of the variable diameter section of the double-ended bolt 10. The enlarged section 531 can cooperate with the frustoconical section at the end of the double-ended bolt to play an axial restraint role. On the one hand, it can prevent the double-ended bolt 10 from axially displaced during punching, and on the other hand, it can also prevent the double-ended bolt 10 from axially displaced when the punching tool is retracted after punching.

[0038] On the basis of the above-mentioned embodiments, in a preferred embodiment, as shown in Figure 7 、 10 The liner plate 519 is arranged on the punching positioning base 512, and the punching positioning groove 517 is arranged on the liner plate 519. In the case of continuous operation of the punching equipment, the punching positioning groove will be constantly subjected to load impact, and thus is a part that is easily damaged. By arranging the liner plate 519, the liner plate 519 can be replaced on site after the punching positioning groove is worn, so as to ensure that the punching equipment can quickly resume operation. In addition, when different specifications of double-end bolts need to be punched, only the liner plate 519 needs to be replaced to meet the requirements, thereby improving the versatility of the punching equipment.

[0039] On the basis of the above-mentioned preferred embodiments, as a preferred embodiment, as shown in Figure 10 , a concave-convex matching structure is arranged between the side of the liner plate 519 facing away from the punching positioning groove 517 and the punching positioning base 512, and the liner plate 519 is limited and matched left and right by the concave-convex matching structure. The so-called concave-convex matching structure is that, at the adjacent faces of the liner plate 519 and the punching positioning base 512, one of them is provided with a convex block, and the other is provided with a concave groove matched with the shape of the convex block. When the liner plate 519 is installed in place, the convex block is clamped in the matched concave groove, so as to combine the liner plate 519 and the punching positioning base 512, which has the advantages of convenience and efficiency. Specifically, in the embodiment shown in Figure 10 , the liner plate 519 is an arc-shaped block, an arc-shaped plug is arranged on the outer arc surface of the arc-shaped block, the punching positioning base 512 is provided with an arc-shaped groove matched with the arc-shaped plug, and after the arc-shaped plug and the arc-shaped groove are inserted, the liner plate 519 and the punching positioning base 512 are limited and matched in the left and right directions.

[0040] On the basis of the above-mentioned embodiments, in a preferred embodiment, a lower rod mechanism 4 is arranged at the tail of the step-by-step rod feeding device 5, and the lower rod mechanism 4 is a lower rod conveying belt. The belt surface of the lower rod conveying belt is provided with a convex rib for limiting and matching with the double-end bolt. Specifically, as shown in Figure 2 、 4As shown in FIG. 6, the lower rod mechanism 4 includes a support frame 41 located at the downstream side of the frame 1, two rollers 43 rotatably assembled on the frame 1, a lower rod conveying belt 42 wound around the rollers 43, and a lower rod driving mechanism for driving the lower rod conveying belt 42 to rotate. The lower rod driving mechanism drives the rollers 43 to rotate by means of a motor and a chain-and-sprocket transmission structure, thereby driving the lower rod conveying belt 42 to move. A plurality of protrusions 44 are arranged on the surface of the conveying belt 42 and extend in the left-right direction. The lower rod conveying belt 42 is arranged to be inclined downward from one side to the other side of the workbench and the upstream end is located at the tail of the step-by-step rod feeding device 5, which can receive the double-headed bolt 10 from the step-by-step rod feeding device 5. Of course, in other embodiments, the lower rod mechanism 4 can be omitted and only a collecting container is arranged at the tail of the step-by-step rod feeding device 5 to collect the double-headed bolt after the punching process. Alternatively, in other embodiments, the lower rod mechanism 4 is a horizontal conveying belt that conveys the punched double-headed bolt 10 to the thread rolling station.

[0041] In order to realize smooth connection between the step-by-step rod feeding device 5 and the lower rod mechanism 4, in some preferred embodiments, three material guiding plates 12 are arranged at the tail end of the step-by-step rod feeding device on the frame 1 and are spaced apart in the left-right direction, as shown in FIG. 5. Figure 4 As shown in FIG. 5, the material guiding plates 12 have downwardly inclined material guiding surfaces. The upstream end of the lower rod mechanism 4 is located below the material guiding plates 12.

[0042] During the processing of the double-headed bolt 10, in addition to the punching process, the double-headed bolt also needs to be numbered. Therefore, on the basis of the above-mentioned embodiments, as a preferred embodiment, the workbench of the double-headed bolt processing equipment is further provided with a numbering positioning clamp and a numbering mechanism 11. The numbering positioning clamp includes a numbering positioning base 511, and the numbering positioning base 511 is provided with a numbering positioning groove formed by one of the screw rod supporting grooves on the fixed seat of the step-by-step rod feeding device 5 or arranged in parallel with one of the screw rod supporting grooves on the fixed seat. Specifically, as shown in FIG. 4 and FIG. 7, the numbering mechanism 11 is arranged between the upstream punching mechanism 3 and the numbering positioning base 511 and is used for numbering the end face of the double-headed bolt 10. The numbering mechanism 11 in this embodiment includes a pneumatic numbering machine and a positioning block arranged beside the numbering positioning base 511. The positioning block is movably assembled on the frame 1 in the up-down direction and is provided with a positioning surface for stopping the end portion of the double-headed bolt 10. The pneumatic numbering machine is a prior art, and the needle thereon can move in the front-rear direction and the up-down direction. The numbering machine can start working through software debugging and hardware testing. Figure 2 3

[0043] Figure 2 Figure 7 ​​​​As shown, as the matching mechanism of the marking mechanism 11, the marking pushing mechanism 6 is arranged opposite to the marking mechanism 3 in the left-right direction, which comprises a marking pushing support 63 arranged on the workbench, a marking pushing cylinder 61 and a marking pushing rod 62, the piston rod of the marking pushing cylinder 61 is connected with the marking pushing rod 62, the marking pushing rod 62 is located on the marking pushing support 63 and can move left and right on the marking pushing support 63 under the drive of the marking pushing rod 62. The marking clamping mechanism 8 comprises a marking clamping cylinder 81 mounted on the frame 1 and a marking clamping block 82 connected at the end of the piston rod of the marking clamping cylinder 81, the structure of the marking clamping block 82 is the same as that of the marking positioning seat 511 and is arranged opposite to the marking positioning seat 511 in the up-down direction. The piston rod of the marking clamping cylinder 81 extends downward to press the middle stem 101 and the variable diameter section 102 of the stud bolt 10 downward.

[0044] In order to realize automatic feeding of the stud bolt punching equipment, a feeding stem sliding table 2 is arranged on the side of the workbench away from the lower stem mechanism 4, a stem blocking structure is arranged at the lower end of the feeding stem sliding table 2, and the step-type stem feeding device 5 is connected with the feeding stem sliding table 2. In order to limit the smoothness of feeding, a stem taking opening for positioning a single stud bolt 10 is arranged at the lower end of the feeding stem sliding table 2, and the movable seat 52 of the step-type stem feeding device 5 extends into the stem taking opening to pick up the corresponding stud bolt 10.

[0045] Specifically, as shown in Figure 4 and Figure 5 The feeding stem sliding table 2 comprises a support plate 21 arranged obliquely downward from upstream to downstream and two limiting plates 22 arranged in parallel and spaced apart in the left-right direction, and a waiting channel for queuing the stud bolts 10 is formed between the two limiting plates 22. In the embodiment, the limiting plate 22 is an L-shaped plate which is detachably fixed on the support plate 21 by bolts. In actual use, the installation position of any one limiting plate 22 on the support plate 21 can be adjusted by disassembling the bolts, and then the distance between the two limiting plates 22 can be adjusted, so as to be suitable for feeding stud bolts 10 of different lengths. The rear ends of the two limiting plates 22 extend out of the support plate 21 by a distance that can accommodate a stud bolt 10, and the space surrounded by the extending part constitutes the above-mentioned stem taking opening. The rear ends of the two limiting plates 22 are respectively connected with a baffle 23, and the baffle 23 constitutes the above-mentioned stem blocking structure. The feeding stem sliding table 2 can directly connect the stud bolt punching equipment of the utility model with the stud bolt conveying line, and further optimize the automatic feeding of the stud bolt.

[0046] When the device of the utility model has a marking mechanism 11, the identification device 24 for identifying the punched one end of the stud bolt 10 is arranged at the position of one of the limiting plates 22 close to the baffle 23 above it, the identification device 24 can adopt the photoelectric sensor in the prior art, which can determine whether the punched end of the stud bolt 10 in the queue is placed correctly, of course, the identification device 24 can also adopt a visual detection camera.

[0047] On the basis of the above-mentioned embodiments, one preferred embodiment of the stud bolt punching equipment of the utility model optimizes the structure of the step-by-step rod feeding device 5, in which, as shown in Figure 8 and Figure 9 The driving device of the movable seat 52 of the step-by-step rod feeding device 5 includes a vertical driving part 54 and a horizontal driving part 53, the vertical driving part 54 can drive the movable seat 52 to move up and down, and the horizontal driving part 53 can drive the movable seat 52 to move back and forth.

[0048] As shown in Figure 6 The fixed seat 51 includes a plurality of fixed support blocks 518 arranged in the front-rear direction for placing the stud bolt 10, and the fixed support blocks 518 are provided with three rows in the left-right direction to provide a plurality of support points to firmly support the stud bolt 10. Each row of fixed support blocks 518 is divided into a marking positioning base 511 corresponding to the marking mechanism, a punching positioning base 512 corresponding to the punching mechanism 3, a feeding support block 513 arranged between the rod feeding slide table 2 and the marking positioning base 511, a discharging support block 515 located between the punching positioning base 512 and the lower rod mechanism 4, and a plurality of progressive support blocks 514 located between the marking positioning base 511 and the punching positioning base 512 and arranged in the front-rear direction. Among them, the feeding support block 513, the progressive support block 514 and the discharging support block 515 are the same structure, which are V-shaped blocks with V-shaped support grooves 516 for supporting the stud bolt 10. Of course, in other embodiments, the V-shaped groove can also be a circular arc groove. The structure of the punching positioning base 512 is shown in Figure 10 It includes a punching positioning base 518 and a lining plate 519 which can be detachably connected and assembled on the punching positioning base 518, the lining plate 519 is an arc block, an arc-shaped insert block is arranged on the outer arc surface of the arc block, and an arc-shaped groove matched with the arc-shaped insert block is arranged on the punching positioning base 518, after the lining plate 519 is connected with the punching positioning base 518, the lining plate 519 and the punching positioning base 518 are in blocking cooperation in the left-right direction. The punching positioning base 518 is provided with a punching positioning groove 517 for placing the stud bolt 10, the punching positioning groove 517 has a semicircular groove segment 530 matched with the middle light rod of the stud bolt 10 and an enlarged segment 531 matched with the variable diameter section of the stud bolt 10. The structure of the marking positioning base 511 is the same as that of the punching positioning base 512, which will not be described here.

[0049] The distance between the feeding support block 513 and the support part of the marking positioning base 511, the distance between the marking positioning base 511 and the support part of the progressive support block 514, the distance between the support parts of two adjacent progressive support blocks 514 and the distance between the progressive support block 514 and the support part of the discharging support block 515 are all equal, and the above-mentioned distances are the set step distances.

[0050] As shown in Figure 8 The movable seat 52 comprises an upper movable plate 521, a lower movable plate 522 and two support plates 524 which are arranged in the left-right direction and connected to the upper movable plate 521, wherein the upper movable plate 521 is located above the workbench, as shown in Figure 9 The rack 1 is provided with two parallel slide rails 111 which are arranged in the left-right direction, and the bottom of the upper movable plate 521 is provided with two slide blocks 528 which are arranged in the front-rear direction and slide-fitted with the slide rails 111 at positions corresponding to the slide rails 111. The upper movable plate 521 is provided with avoiding openings 529 for avoiding the corresponding fixed support blocks. Each support plate 524 is provided with a plurality of conveying grooves 525 which are arranged in the front-rear direction at intervals of a step distance and at equal intervals, and the conveying grooves 525 are V-shaped grooves for supporting the double-end bolts 10 and constitute the screw rod limiting grooves. The number of the conveying grooves 525 on each support plate 524 is two more than the number of the fixed support blocks in each row. One side groove wall of the conveying grooves 525 close to the feeding rod sliding table 2 forms an inclined guide wall 527 for guiding the double-end bolts 10 queued on the feeding rod sliding table 2 into the conveying grooves 525. The lower movable plate 522 is located in the rack 1, and the upper movable plate 521 and the lower movable plate 522 are connected into an integral whole through a plurality of connecting rods 523, as shown in Figure 9 The rack 1 is provided with long holes 112 which are guide slide-fitted with the connecting rods 523.

[0051] In the embodiment, the horizontal driving member 53 and the vertical driving member 54 are both air cylinders, and of course, in other embodiments, electric push rods, hydraulic cylinders, linear modules and other driving members capable of realizing linear driving can also be used. The horizontal driving member 53 is fixed in the rack 1, as shown in Figure 7 The piston rod of the horizontal driving member 53 is connected with a transmission member 526, the vertical driving member 54 is fixed on the transmission member 526, and the piston rod of the vertical driving member 54 is connected with the lower movable plate 522. The horizontal driving member 53 drives the entire movable seat 52 to move forward or backward by a step distance each time.

[0052] The specific working process of the double-end bolt punching equipment is as follows:

[0053] The multiple double-end bolts 10 to be processed are queued in the waiting channel on the feeding slide table 2 and are loaded one by one backward under the action of their own weight, and the movable seat 52 is in the initial position; the identification device 24 identifies whether the punching end and the marking end of the double-end bolt 10 to be processed are placed correctly, when placed correctly, the piston rod of the vertical driving part 54 extends to drive the movable seat 52 to move upward, approaches the end of the conveying groove 525 of the feeding slide table 2, enters the gap between the middle stems of the two double-end bolts 10 to be processed, and makes the double-end bolt 10 to be processed blocked by the baffle 23 enter the conveying groove 525 at the front end under the guidance of the inclined guide wall 527; then the piston rod of the horizontal driving part 53 extends backward by a step distance and the piston rod of the vertical driving part 54 is retracted, the movable seat 52 moves backward by a step distance, and the double-end bolt 10 to be processed is moved to the feeding support block 513, at this time the piston rod of the vertical driving part 54 is retracted and the piston rod of the horizontal driving part 53 extends forward by a step distance to reset the movable seat 52. The vertical driving part 54 and the horizontal driving part 53 repeat the above steps, that is, the multiple double-end bolts 10 to be processed are sequentially moved backward from the feeding support block 513 to the marking positioning base 511, the progressive support block 514, the punching positioning base 512 and the discharging support block 515, until the feeding support block 513, the marking positioning base 511, the progressive support blocks 514, the punching positioning base 512 and the discharging support block 515 are all supported by the double-end bolts 10 to be processed; at this time, after the movable seat 52 is reset, the piston rod of the vertical driving part 54 moves upward, the movable seat 52 guides the double-end bolt 10 to be processed at the baffle 23 to the conveying groove 525 at the front end, the double-end bolt 10 to be processed at the discharging support block 515 is also lifted by the movable seat 52, the piston rod of the horizontal driving part 53 extends backward by a step distance and the piston rod of the vertical driving part 54 is retracted again, and the double-end bolt 10 to be processed originally at the discharging support block 515 moves backward to the guide plate 12, slides to the conveying belt 42 from the guide surface of the guide plate 12, and is limited by the convex ribs 44 on the conveying belt 42, under the conveying of the conveying belt 42, the double-end bolt 10 to be processed after punching is output from the conveying belt 42.

[0054] In the above conveying process, when the double-end bolt 10 to be processed is conveyed to the marking positioning base 511, the marking push cylinder 61 is opened, the marking push rod 62 pushes the double-end bolt 10 to be processed to the positioning surface of the positioning block, at this time the piston rod of the marking clamping cylinder 81 extends downward, the marking clamping block 82 clamps the middle stem 101 and the variable diameter section 102 of the double-end bolt 10 to be processed, and the positioning block is lowered to open the marking machine for marking operation. After marking, the marking push cylinder 61 and the marking clamping cylinder 81 are reset.

[0055] When the double-end bolt 10 to be machined is conveyed to the punching positioning base 512, the punching push cylinder 71 is opened, the punching push rod 72 pushes the double-end bolt 10 to be machined to complete positioning, at this time, the piston rod of the punching clamping cylinder 91 extends downward, the punching clamping block 92 clamps the middle light pole and the variable diameter section of the double-end bolt 10 to be machined, the punching hydraulic cylinder 31 is opened to drive the punching box 32 to move, the double-end bolt 10 to be machined enters into the limiting hole 33, the end of the double-end bolt 10 to be machined is punched by the stamping cutter, among the two variable diameter sections of the double-end bolt 10 to be machined, the positioning groove close to the punch mainly bears the force during punching, and the positioning groove far from the punch mainly bears the force during retraction. When the double-end bolt is provided with a retraction groove, under the action of the retraction groove, the cutting chips generated in the punching process are easy to break, the surface quality of the inner hexagonal hole is ensured, and after the punching is completed, the punching push cylinder 71 and the punching clamping cylinder 91 are reset. When the double-end bolt 10 to be machined is supported on the punching positioning base 512 and the numbering positioning base 511, the numbering operation and the punching operation can be simultaneously performed, or the numbering operation is performed first and then the punching operation is performed.

[0056] The above is only a preferred embodiment of the present application, and is not used to limit the present application, the patent protection scope of the present application is subject to the claims, any equivalent structural changes made according to the content of the specification and drawings of the present application should also be included in the protection scope of the present application.

Claims

1. A double-end bolt punching device, comprising a horizontal workbench, corresponding punching mechanisms are arranged on the left side and / or the right side of the workbench, a screw rod clamp corresponding to the punch is arranged on the workbench, the screw rod clamp comprises a punching positioning base and a screw rod pressing mechanism, a punching positioning groove is arranged on the punching positioning base, characterized in that, The workbench is provided with a step-type bolt feeding device for feeding the stud bolts from back to front, the step-type bolt feeding device comprises a fixed seat and a movable seat, the fixed seat is provided with bolt supporting grooves for positioning the stud bolts, the movable seat is provided with bolt limiting grooves corresponding to the bolt supporting grooves, the movable seat is drivingly connected with a driving mechanism, the driving mechanism is used to drive the movable seat to reciprocatingly lift and translate so as to transfer the stud bolts by a set step distance, and the punch positioning groove is formed by one group of bolt supporting grooves on the fixed seat or is arranged in parallel with one group of bolt supporting grooves on the fixed seat.

2. The double stud piercing apparatus of claim 1 wherein, The punch positioning groove is provided with an enlarged section at one end close to the middle of the workbench in the left-right direction, which is adapted to at least part of the variable diameter section of the stud bolt.

3. A double-end bolt piercing apparatus according to claim 1 or 2, wherein The punch positioning base is provided with a backing plate, and the punch positioning groove is arranged on the backing plate.

4. The double stud piercing apparatus of claim 3 wherein, The side of the backing plate away from the punch positioning groove is provided with a concave-convex matching structure and is limited and matched left and right through the concave-convex matching structure.

5. A double-end bolt piercing apparatus according to claim 1 or 2, wherein The tail of the step-type bolt feeding device is provided with a lower rod mechanism connected with the step-type bolt feeding device, the lower rod mechanism is a lower rod conveying belt, and the belt surface of the lower rod conveying belt is provided with a protruding rib for stopping and cooperating with the stud bolt.

6. A double-end bolt piercing apparatus according to claim 1 or 2, wherein The workbench is also provided with a marking positioning clamp and a marking mechanism, the marking positioning clamp comprises a marking positioning base, the marking positioning base is provided with a marking positioning groove, and the marking positioning groove is formed by one group of bolt supporting grooves on the fixed seat or is arranged in parallel with one group of bolt supporting grooves on the fixed seat.

7. The double stud piercing apparatus of claim 5 wherein, The side of the workbench away from the lower rod mechanism is provided with a rod feeding sliding table, the lower end of the rod feeding sliding table is provided with a rod stopping structure, and the step-type bolt feeding device is connected with the rod feeding sliding table.

8. The double stud piercing apparatus of claim 7 wherein, The lower end of the rod feeding sliding table is provided with a rod taking opening, and the movable seat of the step-type bolt feeding device extends into the rod taking opening to pick up the corresponding stud bolt.

9. The double stud piercing apparatus of claim 7 wherein, The lower end of the rod feeding sliding table is provided with an identification device for identifying the end to be processed of the stud bolt.

10. A double-end bolt piercing apparatus according to claim 1 or 2, wherein The driving mechanism of the movable seat comprises a lifting driver and a translation driver, one of the lifting driver and the translation driver is arranged on the output path of the other to form a two-stage driving mechanism, the lifting driver is used to drive the movable seat upward to drive the stud bolt to a height above the fixed seat and to lower the movable seat to drop the stud bolt on the fixed seat, and the translation driver is used to reciprocatingly move in the feeding direction, and the reciprocating movement length is equal to the set step distance.

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