Batch rod material distributing, buffering and discharging assembly and application method thereof
By designing a batch bar stock distribution-buffering-discharge assembly, the problem of high requirements for the incoming material posture in existing bar stock feeding mechanisms is solved, realizing the separation of batch bars one by one and single bar discharge, thereby improving the degree of automation and production stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-12
- Publication Date
- 2026-06-26
Smart Images
Figure CN118183231B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of automatic bar stock feeding technology, and in particular to a batch bar stock sorting-buffering-discharge assembly and its application method. Background Technology
[0002] With the continuous upgrading and transformation of the manufacturing industry and the popularization of automation, the requirements for the feeding mechanism in bar stock processing are becoming increasingly stringent. Existing feeding mechanisms can usually only separate bars one by one. For example, the authorized invention patent with publication number CN114655681B discloses a feeding assembly and feeding method for a magnetic particle inspection system for round steel bars. This patent realizes the separation of parallel and adjacent round steel bars one by one, and then automatic feeding in groups, providing a prerequisite for subsequent operations on round steel bars.
[0003] However, the existing bar stock feeding structures still have the following shortcomings: they have high requirements for the posture of the bars at the receiving end. If the bars at the receiving end are piled up or tilted, the feeding mechanism will fail and the bars cannot be separated. Therefore, most of the time, it is necessary to manually arrange the bars flat on the feeding carriage and monitor in real time whether the posture of the bars at the receiving end meets the requirements. This results in high manual labor intensity and low automation. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a batch bar stock splitting-buffering-discharging assembly and its application method, which realizes the individual separation and discharge of batch bars, and can meet the feeding requirements of various bar stock processing scenarios.
[0005] The technical solution of this invention is: a batch bar stock distribution-buffering-discharge assembly, including a bar stock storage hopper, a belt conveyor, a bar stock separation elevator, and a bar stock individual discharge machine; the bar stock storage hopper has an internal cavity for accommodating batches of bar stock, and a strip-shaped discharge port for horizontally discharging the bar stock is provided at the lower end of one side of the bar stock storage hopper; the belt conveyor has a conveyor belt at its upper end, with a receiving end and a discharge end at both ends of the conveyor belt, and the conveying direction of the conveyor belt is perpendicular to the extension direction of the strip-shaped discharge port of the bar stock storage hopper. The belt conveyor is equipped with a baffle plate positioned directly opposite the discharge end of the conveyor belt, and the receiving end of the conveyor belt is located directly below the strip discharge port of the bar stock storage hopper; the bar stock separating elevator is arranged adjacent to the belt conveyor; it is used to separate, lift, and output the batch of bars accumulated at the discharge end of the conveyor belt one by one to the bar stock individual discharge machine; the bar stock individual discharge machine is arranged adjacent to the bar stock separating elevator; it is used to receive and buffer the bars discharged by the bar stock separating elevator, and then output the buffered bars one by one.
[0006] A further technical solution of the present invention is as follows: the bar stock separation and lifting machine includes an inner toothed frame, an outer toothed frame, and a lifting drive device A; the inner toothed frame consists of two parallel and vertically symmetrically arranged inner toothed plates and a connecting member A connecting the two inner toothed plates. The inner toothed plates have multi-stage V-shaped grooves with varying heights on their front sides. Each V-shaped groove consists of a vertical wall and an inclined wall connected to the lower end of the vertical wall. All V-shaped grooves have the same shape and size. The lower end of the lowest V-shaped groove of the inner toothed plate is connected to an inner front vertical wall, which is connected to the inclined wall of the lowest V-shaped groove. The upper end of the highest V-shaped groove of the inner toothed plate is connected to an inner upper vertical wall. The inclined wall has a high end and a low end at the two ends of the inner upper inclined wall, respectively. The high end of the inner upper inclined wall is connected to the vertical wall of the uppermost V-shaped groove. The outer gear frame consists of two parallel and vertically symmetrically arranged outer gear plates and a connector B connecting the two outer gear plates. The outer gear plates have multi-level V-shaped grooves with varying heights on their front sides. Each V-shaped groove consists of a vertical wall and an inclined wall connected to the lower end of the vertical wall. All V-shaped grooves have the same shape and size. The lower end of the lowermost V-shaped groove of the outer gear plate is connected to an outer front vertical wall, which is connected to the inclined wall of the lowermost V-shaped groove. The upper end of the uppermost V-shaped groove of the outer gear plate is connected to an outer... The upper inclined wall has a high end and a low end at its two ends, respectively. The high end of the upper inclined wall connects to the vertical wall of the uppermost V-shaped groove. The V-shaped groove of the outer gear frame is identical in shape, size, and number to the V-shaped groove of the inner gear frame. The two outer gear plates of the outer gear frame are arranged outside the two inner gear plates of the inner gear frame. The connecting piece B of the outer gear frame is located at the lower end of the inner gear frame. Any level of V-shaped groove on the outer gear frame is staggered with the corresponding height V-shaped groove on the inner gear frame, thus forming multiple positioning grooves A and B with gradient heights. Each positioning groove A and each positioning groove B can only accommodate a single bar stock. In positioning slot A, the lowest positioning slot A is formed by the inclined wall of the lowest V-shaped groove of the outer gear frame and the inner front vertical wall of the inner gear frame; the highest positioning slot A is formed by the outer upper inclined wall of the outer gear frame and the vertical wall of the highest V-shaped groove of the inner gear frame; the other positioning slots A are formed by the inclined wall of the V-shaped groove of the outer gear frame and the vertical wall of the V-shaped groove of the inner gear frame. In positioning slot B, all positioning slots B are formed by the inclined wall of the V-shaped groove of the inner gear frame and the vertical wall of the V-shaped groove of the outer gear frame. The lifting drive device is fixedly connected to the connecting part B of the outer gear frame, which is used to drive the outer gear frame to make vertical lifting and lowering movements, thereby lifting the bar stock step by step.
[0007] A further technical solution of the present invention is as follows: the bar stock discharge machine includes a bar stock slide, a double-linked top block, and a lifting drive device B; the bar stock slide includes a slide plate; the upper surface of the slide plate is provided with a vertically arranged vertical baffle, a downward sliding surface connected to the edge of the vertical baffle and extending downward, and an upward sliding surface connected to the lower edge of the vertical baffle and extending upward; the upper edge of the upper sliding surface is adjacent to and flush with the lower end of the inner upper inclined wall of the internal gear frame, and the lower edge of the downward sliding surface is used to discharge the bar stock; the downward sliding surface is provided with a positioning groove C that accommodates only one bar stock, and the bottom of the positioning groove C is provided with a through-hole The operating port C and the positioning groove C extend in a direction parallel to the width direction of the slide plate. A horizontal strip surface that can only accommodate one bar is provided at the lower edge of the upper sliding surface. The horizontal strip surface has a through operating port A. The width of the slide plate is adapted to the length of the bar. The upper end of the double-top block has a first top finger and a second top finger arranged at intervals. The lifting drive device B is fixedly connected to the lower end of the double-top block. The lifting drive device B drives the double-top block to make vertical lifting and lowering movements, thereby causing the first top finger to pass through or exit the operating port A and the second top finger to pass through or exit the operating port C.
[0008] A further technical solution of the present invention is: the bar stock carriage further includes a side plate B and a top plate. The side plates B are arranged on both sides in the width direction of the slide plate, and the top plate is fixedly connected between the two side plates B. The top plate is arranged parallel to the upper sliding surface of the slide plate, and a gap is formed between the lower surface of the top plate and the upper sliding surface of the slide plate, allowing only a single bar stock to pass through.
[0009] A further technical solution of the present invention is: the top of the first finger of the double-jointed top block is provided with a first inclined surface, the upper and lower edges of the first inclined surface are respectively the upper edge and the lower edge, the top of the second finger of the double-jointed top block is provided with a second inclined surface, the inclination direction of the first inclined surface and the second inclined surface are both consistent with the inclination direction of the sliding surface, the inclination angle of the first inclined surface is greater than or equal to the inclination angle of the sliding surface, and the inclination angle of the second inclined surface is greater than or equal to the inclination angle of the sliding surface.
[0010] A further technical solution of the present invention is: the length of the first finger of the double-top block is shorter than the length of the second finger. When the lower edge of the first inclined surface of the first finger is flush with the upper edge of the sliding surface of the slide plate, the upper end of the second finger passes through the operation port C and extends out of the upper end of the operation port C.
[0011] The technical solution of the present invention is: a bar stock feeding method, applied to the above-mentioned batch bar stock splitting-buffering-discharging assembly, for the separation of batch bars one by one and single bar discharge; before the feeding method is executed, the batch bar stock splitting-buffering-discharging assembly is in an initial state;
[0012] The initial state is as follows:
[0013] ①. The lowest positioning slot A in the bar stock separating elevator is located at the lower end of the conveyor belt;
[0014] ②. The double-ended top block in the bar feeder is located at the lower end of the slide plate;
[0015] The feeding method and steps are as follows:
[0016] S01, Spread the batch of bar stock horizontally:
[0017] The bar stock is horizontally loaded into the inner cavity of the bar stock storage hopper, ensuring that the length direction of the bar stock is parallel to the width direction of the inner cavity of the bar stock storage hopper. After the bar stock to be processed is discharged from the strip discharge port at the lower end of the bar stock storage hopper, it falls onto the receiving end of the conveyor belt, and then moves towards the discharge end of the conveyor belt by the conveyor belt until it is stopped by the baffle plate and accumulates at the discharge end of the conveyor belt.
[0018] S02, bar stock is separated and lifted one by one:
[0019] The lifting drive device A drives the outer toothed frame to repeatedly lift and lower, separating the bar stock one by one from the batch of bar stock piled or spread on the discharge end of the conveyor belt. The separated bar stock repeats the movement path of "positioning groove A - positioning groove BV-shaped groove", gradually rising, and finally being discharged from the inner upper inclined wall of the inner toothed frame.
[0020] S03, output bar stock one by one after buffering:
[0021] After the bar stock is discharged from the internal gear frame, it enters the upper sliding surface of the slide plate and slides down to the horizontal strip surface, where it contacts or abuts the vertical stop surface. The lifting drive device B drives the double top block to lift vertically, so that the first top finger passes through or exits the operating port A and the second top finger passes through or exits the operating port C. When the first top finger enters the operating port A, it lifts a bar stock on the horizontal strip surface. When the lifted bar stock reaches the edge of the lower sliding surface, it slides down the slope of the lower sliding surface. When the second top finger enters the operating port C, it pushes out a bar stock in the positioning groove C. The pushed-out bar stock slides down the slope of the lower sliding surface and is finally discharged from the lower edge of the lower sliding surface.
[0022] A further technical solution of the present invention is: in step S01, the relative position of the side plate A and the two slots is adjusted so that the width of the strip discharge port is between 1d and 2d, where d is the diameter of the bar stock, so that only one bar stock can be discharged from the strip discharge port at a time.
[0023] A further technical solution of the present invention is as follows: In step S02, the number of stages of the V-groove of the external gear frame is defined to increase sequentially from bottom to top, with the lowest stage being stage 1 and the highest stage being stage n; the number of stages of the V-groove of the internal gear frame 31 is defined to increase sequentially from bottom to top, with the lowest stage being stage 1 and the highest stage being stage n; the number of stages of the positioning groove A is defined to increase sequentially from bottom to top, with the lowest stage being stage 1 and the highest stage being stage n+1; the number of stages of the positioning groove B is defined to increase sequentially from bottom to top, with the lowest stage being stage 1 and the highest stage being stage n; the lifting stroke of the external gear frame is the height of the vertical wall of the V-groove or the height of the vertical wall of the V-groove; during the rising process of the external gear frame, the first stage positioning groove A picks up and lifts a bar from the bar stock piled up at the discharge end of the conveyor belt, and the bar stock not picked up is temporarily blocked by the outer front vertical wall, and the (n+1)th stage positioning groove A picks up and lifts a bar stock. Positioning slot A picks up and lifts a bar stock from the V-shaped slot of the nth-stage internal gear frame; when the outer gear frame rises to its highest point, all positioning slots A temporarily disappear, the inclined wall of the nth-stage V-shaped slot is flush with the inclined wall of the nth-stage V-shaped slot, and the bar stock in the nth-stage positioning slot A enters the nth-stage positioning slot B, and the bar stock in the (n+1)th-stage positioning slot A is discharged sequentially through the outer upper inclined wall of the outer gear frame and the inner upper inclined wall of the inner gear frame; during the descent of the outer gear frame: the bar stock in each level of positioning slot B remains stationary; when the outer gear frame descends to its lowest point, all positioning slots B temporarily disappear, the inclined wall of the nth-stage V-shaped slot is flush with the inclined wall of the (n-1)th-stage V-shaped slot, and the bar stock in the nth-stage positioning slot B enters the V-shaped slot of the nth-stage internal gear frame, and the bar stock piled on the discharge end of the conveyor belt is temporarily blocked by the baffle plate.
[0024] A further technical solution of the present invention is as follows: In step S03, during the upward stroke of the double-top block, firstly, the bar stock in the positioning groove C is pushed out by the first top finger. The pushed-out bar stock slides down the sliding surface and is finally discharged from the lower edge of the sliding surface, thus achieving material discharge. Then, the bar stock on the horizontal strip surface is lifted by the second top finger until it is flush with the upper edge of the sliding surface. The lifted bar stock slides down the sliding surface until it stops against the side wall of the first top finger. During the downward stroke of the double-top block, when the first top finger retracts to the lower end of the positioning groove C, the bar stock against the side wall of the first top finger loses its support and slides down the sliding surface into the positioning groove C, waiting to be pushed out by the next upward stroke of the double-top block. When the second top finger retracts to the lower end of the horizontal strip surface, the bar stock arranged on the upper sliding surface slides down to fill the gap on the horizontal strip surface, waiting to be lifted by the next upward stroke of the double-top block.
[0025] Compared with the prior art, the present invention has the following advantages:
[0026] 1. It enables the separation and individual discharge of batches of bar stock, adaptable to the work rhythm of subsequent bar stock processing steps. The combination of the bar stock storage hopper and belt conveyor roughly spreads out the batch of bar stock, creating favorable conditions for subsequent individual bar stock separation. The bar stock separation elevator separates and lifts the roughly spread batch of bar stock, creating favorable conditions for subsequent individual bar stock discharge. The individual bar stock discharge machine achieves flattened stacking and individual bar stock output, providing a high degree of tolerance for errors in the discharge operation and making the discharge rhythm highly controllable, fully meeting the feeding requirements of various bar stock processing scenarios.
[0027] 2. The bar stock discharge machine has the following advantages:
[0028] 2.1 To enable the discharge operation to have a fault tolerance: The upper sliding surface of the slide plate can accommodate several bars to be neatly arranged, which is equivalent to setting up a discharge buffer area. During discharge, the bars on the upper sliding surface of the slide plate are discharged one by one by the lifting action of the double top block. When the equipment in the incoming direction (bar separation elevator and belt conveyor) malfunctions, it will not immediately cause the subsequent processes or equipment to run idle. Instead, the bars buffered on the upper sliding surface of the slide plate will be consumed first, thus giving maintenance personnel time to troubleshoot the equipment failure and ensuring the continuity and stability of production.
[0029] 2.2 Make the discharge rhythm highly controllable: Due to the existence of the discharge buffer zone, the final discharge rhythm is completely controlled by the operating frequency of the lifting drive device B, and is not limited by the incoming material direction equipment (bar separation elevator and belt conveyor).
[0030] 3. The bar stock separation and elevator has the following advantages:
[0031] 3.1 While separating the bar stock from the batch of bar stock piled up at the discharge end of the conveyor belt, the bar stock's posture can be corrected to a horizontal state, and the bar stock can also maintain a horizontal state during the transfer and lifting process between positioning groove A and positioning groove BV-shaped groove, thereby ensuring the reliability of subsequent discharge operations.
[0032] 3.2 It can lift the bar stock to a relatively high height within a relatively short horizontal distance, providing the required initial height for subsequent bar stock feeders (or creating a height difference for other subsequent equipment that requires an initial height).
[0033] The present invention will be further described below with reference to the figures and embodiments. Attached Figure Description
[0034] Figure 1 This is a schematic diagram of the structure of the present invention from a first perspective;
[0035] Figure 2 This is a schematic diagram of the structure of the present invention from a second perspective;
[0036] Figure 3 This is a diagram showing the positional relationship between the bar stock storage hopper, belt conveyor, and bar stock separation elevator.
[0037] Figure 4 This is a schematic diagram of the bar stock separation and elevator.
[0038] Figure 5 This is a three-dimensional structural diagram of the internal gear frame;
[0039] Figure 6 This is a three-dimensional structural diagram of the external gear frame;
[0040] Figure 7 The diagram shows the bar stock separator with its outer toothed frame at the bottom, ready to rise.
[0041] Figure 8 This is a diagram showing the state of the bar stock separator elevator when the outer gear frame rises to the middle.
[0042] Figure 9 A diagram showing the external gear frame of the bar separator elevator reaching its uppermost position and preparing to descend.
[0043] Figure 10 This is a diagram showing the state of the bar stock separator elevator when the outer gear frame descends to the middle.
[0044] Figure 11 This diagram shows the bar separator elevator's outer gear frame reaching its lowest point, ready to rise.
[0045] Figure 12 This is a diagram showing the state of the bar stock feeder when the double-top block is at the lower end of its stroke.
[0046] Figure 13 This is a diagram showing the state of the bar stock feeder when the double-top block is at the upper end of its stroke.
[0047] Special Note: Figure 6-10 In the diagram, the completion of one lifting and lowering motion of the external gear frame is considered as the completion of one work cycle. The direction indicated by the arrow indicates the subsequent movement trend of the external gear frame. The circular cross-section represents the cross-section of the bar stock, and the serial number in the cross-section represents the serial number of the bar stock. By observing the position of the bar stock with the same serial number in different diagrams, the movement trajectory of the bar stock can be known.
[0048] Legend: Bar stock storage hopper 1; Bar stock filling port 11; Strip discharge port 12; Slot 13; Side plate A14; Belt conveyor 2; Conveyor belt 21; Bar baffle plate 22; Bar stock separating elevator 3; Inner toothed frame 31; Inner toothed plate 311; Connector A312; V-groove 313; Inner front vertical wall 314; Inner upper inclined wall 315; Outer toothed frame 32; Outer toothed plate 321; Connector B322; V-groove 323; Outer front vertical wall 324; Outer upper inclined wall 325; Lifting drive device A33; bar stock discharge machine 4; bar stock slide 41; slide plate 411; positioning groove C4111; operating port C4112; vertical stop surface 4113; sliding surface 4114; upper sliding surface 4115; horizontal strip surface 4116; operating port A4117; side plate B412; top plate 413; double top block 42; first top finger 421; second top finger 422; lifting drive device B43; positioning groove A100; positioning groove B200. Detailed Implementation
[0049] Example
[0050] like Figure 1-13 As shown, the batch bar stock distribution-buffering-discharge assembly includes a bar stock storage hopper, a belt conveyor, a bar stock separation elevator, and a bar stock individual discharge machine.
[0051] The bar stock storage hopper 1 has an inner cavity for accommodating a batch of bar stock. The width of the inner cavity is adapted to the length of the bar stock (adapted means that the width of the inner cavity is 1-3cm greater than the length of the bar stock). The top of the hopper is provided with a bar stock filling port 11 for loading the bar stock, and the lower side of the hopper is provided with a strip-shaped discharge port 12 for horizontally discharging the bar stock.
[0052] Belt conveyor 2 is located at the lower end of bar stock storage hopper 1. A horizontally arranged conveyor belt 21 is mounted on the upper end of belt conveyor 2, with a receiving end and a discharging end at both ends. The conveying direction of conveyor belt 21 is perpendicular to the extension direction of the strip discharge port 12 of bar stock storage hopper 1. A baffle plate 22 is mounted on belt conveyor 2, positioned directly opposite the discharging end of the conveyor belt. The baffle plate 22 is used to block the bar stock to prevent it from being discharged from the discharging end of conveyor belt 21 and to promote its accumulation at the discharging end of conveyor belt 21. The receiving end of the conveyor belt is located 2-6 cm directly below the strip discharge port 12 of bar stock storage hopper 1 (i.e., there is a 2-6 cm vertical height difference between the upper surface of the conveyor belt 21 of belt conveyor 2 and the lower edge of the strip discharge port 12 of bar stock storage hopper 1).
[0053] The bar stock separator elevator 3 is arranged adjacent to the belt conveyor. It is used to separate, lift, and output the batch of bars piled up at the discharge end of the conveyor belt 21 to the bar stock discharge machine 4. The bar stock separator elevator 3 includes an internal gear frame 31, an external gear frame 32, and a lifting drive device A33.
[0054] The internal gear frame 31 consists of two parallel and vertically symmetrical internal gear plates 311 and a connector A312 connecting the two internal gear plates 311. The internal gear plates 311 have multi-level V-shaped grooves 313 with varying heights on their front sides. Each V-shaped groove 313 consists of a vertical wall and an inclined wall connected to the lower end of the vertical wall. All V-shaped grooves 313 have the same shape and size. The lower end of the lowest V-shaped groove 313 of the internal gear plate 311 is connected to an inner front vertical wall 314, which is connected to the inclined wall of the lowest V-shaped groove 313. The upper end of the upper V-shaped groove 313 of the internal gear plate 311 is connected to an inner upper inclined wall 315, which has a high end and a low end at its two ends. The high end of the inner upper inclined wall 315 is connected to the vertical wall of the uppermost V-shaped groove 313.
[0055] The outer gear frame 32 consists of two parallel and vertically symmetrically arranged outer gear plates 321 and a connector B322 connecting the two outer gear plates 321. The outer gear plates 321 have multi-level V-shaped grooves 323 with varying heights on their front sides. Each V-shaped groove 323 consists of a vertical wall and an inclined wall connected to the lower end of the vertical wall. All V-shaped grooves 323 have the same shape and size. The outer gear plate 321 has an outer front vertical wall 324 connected to the lower end of the V-shaped groove 323. The outer front vertical wall 324 is connected to the inclined wall of the lower V-shaped groove 323. The outer gear plate 321 has an outer upper inclined wall 325 connected to the upper end of the V-shaped groove 323. The two ends of the outer upper inclined wall 325 are the upper end and the lower end, respectively. The upper end of the outer upper inclined wall 325 is connected to the vertical wall of the uppermost V-shaped groove 323.
[0056] The V-groove 323 of the outer gear frame 32 is identical in shape, size, and number to the V-groove 313 of the inner gear frame 31. Two outer gear plates 321 of the outer gear frame 32 are arranged outside the two inner gear plates 311 of the inner gear frame 31, and the connector B322 of the outer gear frame 32 is located at the lower end of the inner gear frame 31. Any level of V-groove 323 on the outer gear frame 32 is staggered with the corresponding V-groove 313 on the inner gear frame 31, thus forming multiple positioning grooves A100 and B200 with varying heights. Each positioning groove A100 and each positioning groove B200 can only accommodate a single bar stock.
[0057] In positioning groove A100, the lowermost positioning groove A100 is formed by the inclined wall of the lowermost V-shaped groove 323 of the outer gear frame 32 and the inner front vertical wall 314 of the inner gear frame 31. The uppermost positioning groove A100 is formed by the outer upper inclined wall 325 of the outer gear frame 32 and the vertical wall of the uppermost V-shaped groove 313 of the inner gear frame 31. Other positioning grooves A100 (other positioning grooves A100 are those located between the lowermost and uppermost positioning grooves A100) are formed by the inclined wall of the V-shaped groove 323 of the outer gear frame 32 and the vertical wall of the V-shaped groove 313 of the inner gear frame 31. In positioning groove B200, all positioning grooves B200 are formed by the inclined wall of the V-shaped groove 313 of the inner gear frame 31 and the vertical wall of the V-shaped groove 323 of the outer gear frame 32.
[0058] The lifting drive device 33 is fixedly connected to the connecting piece B322 of the outer gear frame 32. It is used to drive the outer gear frame 32 to move vertically, thereby lifting the bar material step by step (specifically, it is lifted by reciprocating between the positioning groove A100, the positioning groove B200, and the V-shaped groove 313 of the inner gear frame 31).
[0059] The bar stock ejector 4 is arranged adjacent to the bar stock separator elevator 3. It is used to receive and buffer the bar stock discharged from the bar stock separator elevator 3, and then output the buffered bar stock one by one. The bar stock ejector 4 includes a bar stock carriage 41, a double top block 42, and a lifting drive device B43. The bar stock carriage 41 includes a slide plate 411. The upper surface of the slide plate 411 is provided with a vertically arranged vertical baffle 4113, a downward sliding surface 4114 connected to the upper edge of the vertical baffle 4113 and extending downward, and an upward sliding surface 4115 connected to the lower edge of the vertical baffle 4113 and extending upward. The upper edge of the upward sliding surface 4115 is close to and flush with the lower end of the inner upper inclined wall 315 of the internal gear frame 31, and the lower edge of the downward sliding surface 4114 is used to discharge the bar stock. The sliding surface 4114 is provided with a positioning groove C4111 that can accommodate only one bar. The bottom of the positioning groove C4111 is provided with a through operating port C4112 (the operating port C4112 occupies only a small part of the bottom area of the positioning groove C4111. The area occupied by the operating port C4112 is the middle part of the bottom of the positioning groove C4111 or the area symmetrically distributed along the middle part. The solid area at the bottom of the positioning groove C4111 without the operating port C4112 is used to support and position the bar). The positioning groove C4111 is arranged horizontally, and the extension direction of the positioning groove C4111 is parallel to the width direction of the slide plate 411. The length of the positioning groove C4111 is the same as the width of the sliding surface 4114. The lower edge of the upper sliding surface 4115 has a horizontal strip surface 4116 that can only accommodate one bar stock (corresponding means that the width of the horizontal strip surface 4116 is equal to the diameter of one bar stock). The length of the horizontal strip surface 4116 is the same as the width of the slide plate 411. The horizontal strip surface 4116 has a through operating port A4117 (the operating port A4117 occupies only a small part of the horizontal strip surface 4116, and the area occupied by the operating port A4117 is the middle part of the horizontal strip surface 4116 or a symmetrically distributed area along the middle part. The solid area of the horizontal strip surface 4116 without the operating port A4117 is used to support and position the bar stock). The width of the slide plate 411 is adapted to the length of the bar stock (corresponding means that the width of the slide plate 411 is 1-3 cm greater than the length of the bar stock). The upper end of the double-jointed top block 42 has a first top finger 421 and a second top finger 422 arranged at intervals. The lifting drive device B43 is fixedly connected to the lower end of the double-top block 42. The lifting drive device B43 drives the double-top block 42 to make vertical lifting movements, thereby causing the first top finger 421 to pass through or exit the operation port A4117 and the second top finger 422 to pass through or exit the operation port C4112.
[0060] Preferably, slots 13 are symmetrically arranged on both sides of the strip discharge port 12 of the bar stock storage hopper 1, and a side plate A14 for opening or closing the strip discharge port 12 is movably inserted between the two slots 13. The side plate A14 is relatively fixed to the two slots 13 by friction, and adjusting the relative position of the side plate A14 and the two slots 13 can completely close the strip discharge port 12 or change its width.
[0061] Preferably, the belt conveyor 2 has symmetrically arranged constraint plates 123 on both sides of the conveyor belt 21. The two constraint plates 123 are used to hold the bar on the conveyor belt 21 and prevent the bar from sliding out from both sides of the width direction of the conveyor belt 21.
[0062] Preferably, the bar stock carriage 41 further includes side plates B412 arranged on both sides of the slide plate 411 in the width direction. The two side plates B412 are used to hold the bar stock on the slide plate 411 and prevent the bar stock from sliding out from both sides of the slide plate 411 in the width direction.
[0063] Preferably, the top of the first finger 421 of the double-jointed top block 42 is provided with a first inclined surface, and the upper and lower edges of the first inclined surface are respectively the upper edge and the lower edge. The top of the second finger 422 of the double-jointed top block 42 is provided with a second inclined surface. The inclination directions of the first and second inclined surfaces are consistent with the inclination direction of the sliding surface 4114. The inclination angle of the first inclined surface (relative to the horizontal plane) is greater than or equal to the inclination angle of the sliding surface 4114 (relative to the horizontal plane), and the inclination angle of the second inclined surface (relative to the horizontal plane) is greater than or equal to the inclination angle of the sliding surface 4114. Based on this feature, the first finger 421 and the second finger 422 can respectively lift the bar stock to be flush with the sliding surface 4114, and the bar stock can then be smoothly slid onto the sliding surface 4114 by the guidance of the first and second inclined surfaces.
[0064] Preferably, the length of the first finger 421 of the double-top block 42 is shorter than the length of the second finger 422. When the lower edge of the first inclined surface of the first finger 421 is flush with the upper edge of the sliding surface 4114 of the slide plate 411, the upper end of the second finger 422 passes through the operating port C4112 and extends out of the upper end of the operating port C4112. Based on this feature, on the one hand, an intermittent single bar material discharge mode with controllable discharge rhythm can be realized. The discharge rhythm is completely determined by the operating frequency of the lifting drive device B43. Each time the lifting drive device B43 completes a lifting action, a bar material is discharged. The positioning groove C4111 on the slide plate 411 can be regarded as the area for immediate discharge, and the horizontal strip surface 4116 on the slide plate 411 can be regarded as the area for waiting for discharge. On the other hand, the reinforcing bars pushed onto the sliding surface 4114 by the first jack 421 will not accelerate all the way down and roll into the positioning groove C4111. (The potential problem here is that if the reinforcing bars slide down too fast, they may directly bypass the positioning groove C4111 and continue sliding down, or pop out of the positioning groove C4111 and continue sliding down, causing uncontrolled erroneous discharge. The conventional solution is to reduce the inclination angle of the sliding surface so that the speed of the reinforcing bars when they slide into the positioning groove C4111 is not too fast. However, the smaller the inclination angle, the more likely the reinforcing bars are to slide unevenly, resulting in height differences.) In certain situations, a longer sliding surface may be required, increasing the size and cost of the equipment. Instead, the steel bar will be temporarily held in place by a relatively long second top finger 422. Once the second top finger 422 retracts to the lower end of the positioning groove C4111, the steel bar will roll smoothly into the positioning groove C4111 at a lower speed. This effectively prevents the steel bar from falling into the positioning groove C4111 due to excessive sliding speed, thus avoiding uncontrolled erroneous discharge. It also allows the sliding surface to adopt a relatively large tilt angle (35-45°), which is beneficial to maintaining the smoothness of the steel bar sliding.
[0065] Preferably, the bar stock carriage 41 further includes a top plate 413, which is fixedly connected between the two side plates B412. The top plate 413 is arranged parallel to the upper sliding surface 4115 of the slide plate 411, and a gap is formed between the lower surface of the top plate 413 and the upper sliding surface 4115 of the slide plate 411, allowing only a single bar stock to pass through. This feature effectively constrains the arrangement of the bars on the slide plate 411, preventing the bars from stacking vertically on the slide plate 411, and ensuring the reliability of the intermittent single bar stock discharge machine 4.
[0066] Preferably, the widths of positioning grooves A100 and B200 are both 1.35-1.45d, where d is the diameter of the bar stock, and the distance between the two inner toothed plates 311 and the two outer toothed plates 321 is between 0.5-0.7S, where S is the length of the bar stock. The combination of these two sets of parameters has the following related effects: the width settings of positioning grooves A100 and B200 affect the correction effect of the bar stock separation elevator 3. A larger width allows it to pick up bars that are more deviated from the horizontal plane at the discharge end of the conveyor belt 21. However, when the width is greater than 1.5d, it is possible to pick up two bars at the discharge end of the conveyor belt 21 at once, which does not meet the design requirements of the bar stock separation elevator 3. The distance between the two inner toothed plates 311 and the two outer toothed plates 321 affects the stability and correction capability of the bar stock separation elevator 3 after separation. The maximum distance between the two inner toothed plates 311 and the two outer toothed plates 321 cannot exceed the total length S of the bar stock; otherwise, the bar stock cannot be picked up by the forklift. The minimum distance between the two inner toothed plates 311 and the two outer toothed plates 321 cannot be less than 50% of the total length S of the bar stock; otherwise, the stability after picking up the bar stock will be poor. The larger the distance between the two inner toothed plates 311 and the two outer toothed plates 321, the lower the tolerance for horizontal deviation of the bar stock at the discharge end of the conveyor belt 21; the smaller the distance between the two inner toothed plates 311 and the two outer toothed plates 321, the higher the tolerance for horizontal deviation of the bar stock at the discharge end of the conveyor belt 21. Therefore, considering the above factors, the values of the above two parameters are the preferred range.
[0067] A bar stock feeding method is applied to the above-mentioned batch bar stock splitting-buffering-discharging assembly for the separation of individual bars and single bar discharge in batches; before the feeding method is executed, the batch bar stock splitting-buffering-discharging assembly is in an initial state.
[0068] The initial state is as follows:
[0069] ①. The lowest positioning groove A100 in the bar stock separating and lifting machine 3 is located at the lower end of the conveyor belt 21;
[0070] ②. The double top block 42 in the bar feeder 4 is located at the lower end of the slide plate 411.
[0071] The feeding method and steps are as follows:
[0072] S01, Spread the batch of bar stock horizontally:
[0073] The bar stock is horizontally loaded into the inner cavity of the bar stock storage hopper 1, ensuring that the length direction of the bar stock is parallel to the width direction of the inner cavity of the bar stock storage hopper 1. After the bar stock to be processed is discharged from the strip discharge port 12 at the lower end of the bar stock storage hopper 1, it falls onto the receiving end of the conveyor belt 21, and then moves towards the discharge end of the conveyor belt 21 by the conveyor belt 21 until it is stopped by the baffle plate 22 and accumulates at the discharge end of the conveyor belt 21.
[0074] In this step, the relative positions of the side plate A14 and the two slots 13 are adjusted so that the width of the strip discharge port 12 is between 1d and 2d, where d is the diameter of the bar stock, so that the strip discharge port 12 can discharge only one bar stock at a time.
[0075] S02, bar stock is separated and lifted one by one:
[0076] The lifting drive device A33 drives the outer gear frame 32 to repeatedly lift and lower, separating the bar stock one by one from the batch of bar stock piled or spread on the discharge end of the conveyor belt 21. The separated bar stock repeats the movement path of "positioning groove A100-positioning groove B200-V groove 313", gradually rising, and finally being discharged from the inner upper inclined wall 315 of the inner gear frame 31.
[0077] In this step, the number of stages of the V-groove 323 of the external gear frame 32 is defined to increase sequentially from bottom to top, with the lowest stage being stage 1 and the highest stage being stage n. Similarly, the number of stages of the V-groove 313 of the internal gear frame 31 is defined to increase sequentially from bottom to top, with the lowest stage being stage 1 and the highest stage being stage n. The number of stages of the positioning groove A100 is defined to increase sequentially from bottom to top, with the lowest stage being stage 1 and the highest stage being stage n+1. The number of stages of the positioning groove B200 is defined to increase sequentially from bottom to top, with the lowest stage being stage 1 and the highest stage being stage n. The lifting stroke of the external gear frame 32 is the height of either the vertical wall of the V-groove 313 or the vertical wall of the V-groove 323. During the upward movement of the outer gear frame 32, the first-stage positioning groove A100 picks up and lifts a bar from the bar stock piled up at the discharge end of the conveyor belt 21. Bars not picked up are temporarily blocked by the outer front vertical wall 324. The (n+1)th-stage positioning groove A100 picks up and lifts a bar from the V-shaped groove 313 of the nth-stage inner gear frame 31. When the outer gear frame 32 reaches its highest point, all positioning grooves A100 temporarily disappear. The inclined wall of the nth-stage V-shaped groove 313 becomes flush with the inclined wall of the nth-stage V-shaped groove 323. Bars in the nth-stage positioning groove A100 enter the nth-stage positioning groove B200. Bars in the (n+1)th-stage positioning groove A100 are discharged sequentially through the outer upper inclined wall 325 of the outer gear frame 32 and the inner upper inclined wall 315 of the inner gear frame 31. During the downward movement of the outer gear frame 32, the bar stock in each positioning groove B200 remains stationary. When the outer gear frame 32 descends to its lowest point, all the positioning grooves B200 temporarily disappear, the inclined wall of the nth-level V-groove 323 is flush with the inclined wall of the (n-1)th-level V-groove 313, the bar stock in the nth-level positioning groove B200 enters the V-groove 313 of the nth-level inner gear frame 31, and the bar stock piled on the discharge end of the conveyor belt 21 is temporarily blocked by the baffle plate 22.
[0078] S03, bar stock is output one bar at a time after buffering:
[0079] After the bar stock is discharged from the internal gear frame 31, it enters the upper sliding surface 4115 of the slide plate 411 and slides down the upper sliding surface 4115 to the horizontal strip surface 4116 and contacts or abuts against the vertical stop surface 4113. The lifting drive device B43 drives the double top block 42 to lift vertically, so that the first top finger 421 passes through or exits the operating port A4117 and the second top finger 422 passes through or exits the operating port C4112. When the first top finger 421 extends into the operating port A4117, it lifts a bar stock on the horizontal strip surface 4116. When the lifted bar stock reaches the upper edge of the lower sliding surface 4114, it slides down the slope of the lower sliding surface 4114. When the second top finger 422 extends into the operating port C4112, it pushes out a bar stock in the positioning groove C4111. The pushed-out bar stock slides down the slope of the lower sliding surface 4114 and is finally discharged from the lower edge of the lower sliding surface 4114.
[0080] In this step, during the upward stroke of the double-top block 42, firstly, the bar stock in the positioning groove C4111 is pushed out by the first top finger 421. The pushed-out bar stock slides down the sliding surface 4114 and is finally discharged from the lower edge of the sliding surface 4114, thus achieving material discharge. Then, the bar stock on the horizontal strip surface 4116 is lifted by the second top finger 422 until it is flush with the upper edge of the sliding surface 4114. The lifted bar stock slides down the sliding surface 4114 until it stops against the side wall of the first top finger 421. During the downward stroke of the double top block 42, when the first top finger 421 retracts to the lower end of the positioning groove C4111, the bar stock against the side wall of the first top finger 421 loses its support and slides down the sliding surface 4114 into the positioning groove C4111, waiting for the next upward stroke of the double top block 42 to push it out. When the second top finger 422 retracts to the lower end of the horizontal strip surface 4116, the bar stock arranged on the upper sliding surface 4115 slides down to fill the gap on the horizontal strip surface 4116, waiting for the next upward stroke of the double top block 42 to lift it up.
Claims
1. A batch bar stock dispensing-buffering-discharging assembly, characterized by: The system includes a bar stock storage hopper, a belt conveyor, a bar stock separating elevator, and a bar stock individual discharge machine. The bar stock storage hopper has an internal cavity for accommodating batches of bar stock, and a strip-shaped discharge port on one side of the lower end for horizontally discharging the bar stock. The belt conveyor has a conveyor belt at its upper end, with a receiving end and a discharging end at each end. The conveyor belt's conveying direction is perpendicular to the extension direction of the strip-shaped discharge port of the bar stock storage hopper. A baffle plate is positioned on the belt conveyor directly opposite the discharging end of the conveyor belt, and the receiving end of the conveyor belt is located directly below the strip-shaped discharge port of the bar stock storage hopper. The bar stock separating elevator is located adjacent to the belt conveyor; it separates, lifts, and outputs the batches of bar stock accumulated at the discharging end of the conveyor belt to the bar stock individual discharge machine. The bar stock individual discharge machine is located adjacent to the bar stock separating elevator; it receives and buffers the bar stock discharged from the bar stock separating elevator, and then outputs the buffered bar stock one by one. The bar stock separating and hoisting machine includes an internal gear frame, an external gear frame, and a lifting drive device A. The internal gear frame consists of two parallel and vertically symmetrical internal gear plates and a connecting piece A between the two internal gear plates. The internal gear plates have multi-stage V-shaped grooves with varying heights on their front sides. Each V-shaped groove consists of a vertical wall and an inclined wall connected to the lower end of the vertical wall. All V-shaped grooves have the same shape and dimensions. The lower end of the lowest V-shaped groove on the internal gear plate is connected to an inner front vertical wall, which is connected to the inclined wall of the lowest V-shaped groove. The upper end of the highest V-shaped groove on the internal gear plate is connected to an inner upper inclined wall. The two ends of the inner upper inclined wall... These are respectively high-end and low-end. The high end of the inner upper inclined wall is connected to the vertical wall of the uppermost V-shaped groove. The outer gear frame consists of two parallel and vertically symmetrically arranged outer gear plates and a connector B connecting the two outer gear plates. The outer gear plates have multi-level V-shaped grooves with varying heights on their front sides. Each V-shaped groove consists of a vertical wall and an inclined wall connected to the lower end of the vertical wall. All V-shaped grooves have the same shape and size. The lower end of the lowermost V-shaped groove of the outer gear plate is connected to an outer front vertical wall, which is connected to the inclined wall of the lowermost V-shaped groove. The upper end of the uppermost V-shaped groove of the outer gear plate is connected to an outer upper inclined wall. The two ends of the wall are the high end and the low end, respectively. The high end of the outer upper inclined wall connects to the vertical wall of the uppermost V-shaped groove. The V-shaped groove of the outer gear frame is identical in shape, size, and number to the V-shaped groove of the inner gear frame. The two outer gear plates of the outer gear frame are arranged outside the two inner gear plates of the inner gear frame. The connecting piece B of the outer gear frame is located at the lower end of the inner gear frame. Any level of V-shaped groove on the outer gear frame is staggered with the corresponding height V-shaped groove on the inner gear frame, thus forming multiple positioning grooves A and B with gradient height. Each positioning groove A and each positioning groove B can only accommodate a single bar stock. In positioning groove A... The lowest positioning groove A is formed by the inclined wall of the lowest V-shaped groove of the outer gear frame and the inner front vertical wall of the inner gear frame. The highest positioning groove A is formed by the outer upper inclined wall of the outer gear frame and the vertical wall of the highest V-shaped groove of the inner gear frame. Other positioning grooves A are formed by the inclined wall of the V-shaped groove of the outer gear frame and the vertical wall of the V-shaped groove of the inner gear frame. In positioning groove B, all positioning grooves B are formed by the inclined wall of the V-shaped groove of the inner gear frame and the vertical wall of the V-shaped groove of the outer gear frame. The lifting drive device is fixedly connected to the connecting part B of the outer gear frame, which is used to drive the outer gear frame to make vertical lifting and lowering movements, thereby lifting the bar stock step by step. The bar stock discharge machine includes a bar stock carriage, a double-linked top block, and a lifting drive device B. The bar stock carriage includes a sliding plate. The upper surface of the sliding plate has a vertically arranged vertical baffle, a downward sliding surface connected to the edge of the vertical baffle and extending downwards, and an upward sliding surface connected to the lower edge of the vertical baffle and extending upwards. The upper edge of the upper sliding surface is flush with the lower end of the inner upper inclined wall of the internal gear frame, and the lower edge of the lower sliding surface is used to discharge the bar stock. The lower sliding surface has a positioning groove C that accommodates only one bar stock, and the bottom of the positioning groove C has a through-hole operating port C. The extension direction of the slot C is parallel to the width direction of the slide plate. The lower edge of the upper sliding surface is provided with a horizontal strip surface that can only accommodate one bar. The horizontal strip surface is provided with a through operating port A. The width of the slide plate is adapted to the length of the bar. The upper end of the double-top block is provided with a first top finger and a second top finger arranged at intervals. The lifting drive device B is fixedly connected to the lower end of the double-top block. The lifting drive device B drives the double-top block to make vertical lifting and lowering movements, thereby causing the first top finger to pass through or exit the operating port A and causing the second top finger to pass through or exit the operating port C.
2. The batch bar stock dispensing-buffering-discharging assembly as described in claim 1, characterized in that: The bar stock carriage also includes side plates B and a top plate. The side plates B are arranged on both sides of the slide width direction, and the top plate is fixedly connected between the two side plates B. The top plate is arranged parallel to the upper sliding surface of the slide, and a gap is formed between the lower surface of the top plate and the upper sliding surface of the slide, allowing only a single bar stock to pass through.
3. The batch bar stock dispensing-buffering-discharging assembly as described in claim 2, characterized in that: The top of the first finger of the double-linked top block has a first inclined surface, and the upper and lower edges of the first inclined surface are the upper edge and the lower edge, respectively. The top of the second finger of the double-linked top block has a second inclined surface. The inclination directions of the first and second inclined surfaces are consistent with the inclination direction of the sliding surface. The inclination angle of the first inclined surface is greater than or equal to the inclination angle of the sliding surface, and the inclination angle of the second inclined surface is greater than or equal to the inclination angle of the sliding surface. The length of the first finger of the double-linked top block is shorter than the length of the second finger. When the lower edge of the first inclined surface of the first finger is flush with the upper edge of the sliding surface of the slide plate, the upper end of the second finger passes through the operating port C and extends out of the upper end of the operating port C.
4. A bar stock feeding method, applied to the batch bar stock splitting-buffering-discharging assembly as described in claim 3, for separating and discharging individual bars of a batch of bars; before executing the feeding method, the batch bar stock splitting-buffering-discharging assembly is in an initial state; The initial state is as follows: ①. The lowest positioning slot A in the bar stock separating elevator is located at the lower end of the conveyor belt; ②. The double-ended top block in the bar feeder is located at the lower end of the slide plate; The feeding method and steps are as follows: S01, Spread the batch of bar stock horizontally: The bar stock is horizontally loaded into the inner cavity of the bar stock storage hopper, ensuring that the length direction of the bar stock is parallel to the width direction of the inner cavity of the bar stock storage hopper. After the bar stock to be processed is discharged from the strip discharge port at the lower end of the bar stock storage hopper, it falls onto the receiving end of the conveyor belt, and then moves towards the discharge end of the conveyor belt by the conveyor belt until it is stopped by the baffle plate and accumulates at the discharge end of the conveyor belt. S02, bar stock is separated and lifted one by one: The lifting drive device A drives the outer toothed frame to repeatedly lift and lower, separating the bar stock one by one from the batch of bar stock piled or spread on the discharge end of the conveyor belt. The separated bar stock repeats the movement path of "positioning groove A - positioning groove BV-shaped groove", gradually rising, and finally being discharged from the inner upper inclined wall of the inner toothed frame. S03, output bar stock one by one after buffering: After the bar stock is discharged from the internal gear frame, it enters the upper sliding surface of the slide plate and slides down to the horizontal strip surface, where it contacts or abuts the vertical stop surface. The lifting drive device B drives the double top block to lift vertically, so that the first top finger passes through or exits the operating port A and the second top finger passes through or exits the operating port C. When the first top finger enters the operating port A, it lifts a bar stock on the horizontal strip surface. When the lifted bar stock reaches the edge of the lower sliding surface, it slides down the slope of the lower sliding surface. When the second top finger enters the operating port C, it pushes out a bar stock in the positioning groove C. The pushed-out bar stock slides down the slope of the lower sliding surface and is finally discharged from the lower edge of the lower sliding surface.
5. The bar stock feeding method as described in claim 4, characterized in that: In step S01, the relative position of side plate A and the two slots is adjusted so that the width of the strip discharge port is between 1d and 2d, where d is the diameter of the bar stock, so that only one bar stock can be discharged from the strip discharge port at a time.
6. The bar stock feeding method as described in claim 5, characterized in that: S In step 02, the number of V-grooves on the external gear frame is defined to increase sequentially from bottom to top, with the lowest level being level 1 and the highest level being level n. Similarly, the number of V-grooves on the internal gear frame is defined to increase sequentially from bottom to top, with the lowest level being level 1 and the highest level being level n. The number of positioning grooves A and B is defined to increase sequentially from bottom to top, with the lowest level being level 1 and the highest level being level n+1. The lifting stroke of the external gear frame is equal to the height of the vertical wall of the V-groove or the vertical wall of the V-groove. During the upward movement of the external gear frame, the first-level positioning groove A picks up and lifts one bar from the stacked bar stock at the discharge end of the conveyor belt. Bar stock not picked up is temporarily blocked by the outer front vertical wall. The (n+1)th level positioning groove A picks up and lifts one bar from the nth level internal groove. A bar stock is picked up and lifted from the V-groove of the gear frame; when the outer gear frame rises to its highest point, all positioning grooves A temporarily disappear, the inclined wall of the nth level V-groove is flush with the inclined wall of the nth level V-groove, and the bar stock in the nth level positioning groove A enters the nth level positioning groove B. The bar stock in the (n+1)th level positioning groove A is discharged sequentially through the outer upper inclined wall of the outer gear frame and the inner upper inclined wall of the inner gear frame; during the descent of the outer gear frame: the bar stock in each level positioning groove B remains stationary; when the outer gear frame descends to its lowest point, all positioning grooves B temporarily disappear, the inclined wall of the nth level V-groove is flush with the inclined wall of the (n-1)th level V-groove, and the bar stock in the nth level positioning groove B enters the V-groove of the nth level inner gear frame. The bar stock piled on the discharge end of the conveyor belt is temporarily blocked by the baffle plate.
7. The bar stock feeding method as described in claim 6, characterized in that: In step S03, during the upward stroke of the double-top block, firstly, the bar stock in the positioning groove C is pushed out by the first top finger. The pushed-out bar stock slides down the sliding surface and is finally discharged from the lower edge of the sliding surface, thus achieving material discharge. Then, the bar stock on the horizontal strip surface is lifted by the second top finger until it is flush with the upper edge of the sliding surface. The lifted bar stock slides down the sliding surface until it stops against the side wall of the first top finger. During the downward stroke of the double-top block, when the first top finger retracts to the lower end of the positioning groove C, the bar stock against the side wall of the first top finger loses its support and slides down the sliding surface into the positioning groove C, waiting to be pushed out by the next upward stroke of the double-top block. When the second top finger retracts to the lower end of the horizontal strip surface, the bar stock arranged on the upper sliding surface slides down to fill the gap on the horizontal strip surface, waiting to be lifted by the next upward stroke of the double-top block.
Citation Information
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