A bending device for reinforcing bar processing and a method of using the same

Abstract

The application relates to the technical field of steel bar processing, and provides a bending device for steel bar processing and a use method thereof. The bending device for steel bar processing comprises a workbench, the workbench is provided with a forming groove, a die block matched with the forming groove is arranged on the upper side of the forming groove, and the die block is connected with a lifting mechanism; the bending device further comprises a first bending assembly and a second bending assembly, the first bending assembly and the second bending assembly are both provided with two groups and are symmetrically arranged on the two sides of the forming groove, the first bending assembly comprises a rotating disc, a bending column and an extension column, the bending column and the extension column are both connected with the end surface of the rotating disc in a perpendicular mode, the extension column is arranged in the middle part of the rotating disc, and the bending column is arranged at the edge side of the rotating disc; the second bending assembly comprises a toothed disc and a driving motor, a bending straight plate is fixed on the toothed disc and is kept perpendicular to the end surface of the toothed disc, the toothed disc is engaged with the toothed disc of another second bending assembly, and the toothed disc is connected with the driving motor to be driven. The application can more efficiently process stirrups, and the produced stirrups have higher standard degrees.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel bar processing, in particular to a bending device for steel bar processing and a method thereof. BACKGROUND

[0002] Steel bar refers to steel material for reinforced concrete and prestressed reinforced concrete, the cross section of which is circular, and deformed steel bar is steel bar with ribs on the surface, usually with two longitudinal ribs and transverse ribs uniformly distributed along the length direction. In construction operation, a large amount of steel bar is needed, and for some construction operations, steel bar with specific bending shape is needed, such as hoop, which needs to be bent into a frame shape. Hoop is used to meet the shear strength of the inclined section, and to connect the main steel bar and the steel bar of the compression zone. The hoop made of round steel should have a hook (semicircular, right angle or oblique hook) at the end. The demand for hoop is large. In the production process of the existing steel bar bending device, the steel bar needs to be bent several times. After completing a bending, the steel bar is pushed forward by the conveying mechanism again, reaches the next set bending point, and is bent again by the rotation of the bending roller. Only one angle can be bent at a time, which makes the processing efficiency of this method not high, and the bending angle is not easy to control, and the standard of the produced hoop is poor. SUMMARY

[0003] The purpose of the present application is to provide a bending device for steel bar processing and a method thereof, which can process standard hoop more efficiently.

[0004] The embodiment of the present application is implemented by the following technical scheme: a bending device for steel bar processing, comprising a workbench, a forming groove is formed on the workbench, a mold pressing block matched with the forming groove is installed on the upper side of the forming groove, and the mold pressing block is connected with a lifting mechanism; a first bending assembly and a second bending assembly are further included, the first bending assembly and the second bending assembly are each provided with two groups and are symmetrically arranged on both sides of the forming groove, the first bending assembly comprises a rotating disc, a bending column and a telescopic column, the bending column and the telescopic column are vertically connected with the end face of the rotating disc, the telescopic column is arranged in the middle of the rotating disc, and the bending column is arranged at the edge side of the rotating disc; the second bending assembly comprises a toothed disc and a driving motor, a bending straight plate is fixed on the toothed disc and is vertically arranged with the end face of the toothed disc, the toothed disc is engaged with the toothed disc of the other second bending assembly, and the toothed disc is connected with a driving motor.

[0005] Further, a first groove matched with the steel bar is arranged in the circumferential side of the mold pressing block, a second groove is formed in the bending straight plate, and the first groove and the second groove are vertically arranged on the same straight line.

[0006] Further, the steel bar feeding mechanism and the cutting assembly are arranged in sequence, the cutting assembly is arranged beside the first bending assembly, the steel bar feeding mechanism is arranged at the front end of the workbench, the cutting assembly comprises a material arranging cylinder and a cutting plate, the steel bar passes through the material arranging cylinder, the cutting plate is rotationally connected to one end of the material arranging cylinder, and the cutting plate is provided with a cutting opening.

[0007] Further, the front end of the workbench is provided with a limiting baffle, one end of the limiting baffle is connected with a screw rod for adjustment, and the screw rod is parallel to the workbench.

[0008] Further, a through gap for clamping one end of the steel bar is formed in the top of the mold pressing block, and a push plate for pushing the steel bar is arranged on the inward side of the through gap.

[0009] Further, a hanging rod for hanging the stirrup is arranged beside the mold pressing block, and the hanging rod is arranged in an inclined manner.

[0010] Further, a gear ring is fixedly installed on the back side of the rotating disc, and the gear ring is engaged with a driving gear.

[0011] Further, the rotating disc and the gear disc are arranged beside the workbench, and the rotating disc and the gear disc are perpendicular to the workbench.

[0012] Further, the forming groove is V-shaped, and the mold pressing block is a prism structure.

[0013] A method for using the above-mentioned steel bar bending device, comprising the following steps:

[0014] S1, steel bar feeding: placing a straight steel bar of a specified length to be bent on the workbench, with the middle part of the steel bar suspended above the forming groove, and the two ends of the steel bar symmetrically arranged relative to the forming groove, and the two sides maintaining the same length;

[0015] S2, bending of the middle part of the steel bar: the telescopic column of the rotating disc is extended, the steel bar is clamped below the telescopic column and in contact with the telescopic column, the mold pressing block is pressed down by the lifting mechanism until the mold pressing block gradually presses the steel bar into the bottom of the forming groove until the steel bar is completely fitted, and the lifting mechanism is stopped;

[0016] S3, bending of the end of the steel bar: the rotating discs on both sides of the forming groove are kept rotating in opposite directions, the bending column is rotated towards the side of the mold pressing block, and the end of the steel bar is bent by a specified angle by cooperation of the bending column and the telescopic column;

[0017] S4, adjustment of the first bending assembly: the telescopic column is retracted towards the inside of the rotating disc by a distance, and the rotating disc is rotated;

[0018] S5, stirrup forming: start the driving motor to drive a gear plate to rotate, two gear plates rotate reversely, two bending straight plates lift the steel bar from the lower end and stick to one side of the die block to apply force to the steel bar, the steel bar is formed by sticking to the upper surface of the die block under the action of the bending straight plate, the steel bar end is clamped into the through gap, and the stirrup processing is completed;

[0019] S6, blanking: the gear plate rotates back to the original position, the lifting mechanism drives the die block to rise by a distance, the cylinder drives the push plate to move, the stirrup is pushed down from the die block and falls into the hanging rod, and the above steps are repeated.

[0020] The technical scheme of the embodiment of the present application has at least the following advantages and beneficial effects: compared with the prior art, the present application can process multiple steel bars at the same time by pressing and bending the steel bar through the die block, turning over the steel bar end through the first bending assembly, and overall turning over and bending through the second bending assembly, so that the number of bending times is less, the processing efficiency is higher, the stirrup is formed around the die block, and the standard degree of the processed stirrup is also higher. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiment of the present application, the following will briefly introduce the drawings needed to be used in the embodiment, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as a limitation to the scope, for those skilled in the art, without paying creative labor, other related drawings can also be obtained according to these drawings.

[0022] Figure 1 The structure schematic diagram of the bending device for steel bar processing before bending provided by the embodiment of the present application;

[0023] Figure 2 The structure schematic diagram of the die block after pressing of the bending device for steel bar processing provided by the embodiment of the present application;

[0024] Figure 3 The structure schematic diagram of the bending device for steel bar processing when the steel bar end is bent provided by the embodiment of the present application;

[0025] Figure 4 The structure schematic diagram of the bending device for steel bar processing after the stirrup is processed and bent provided by the embodiment of the present application;

[0026] Figure 5 The top view of the bending device for steel bar processing provided by the embodiment of the present application;

[0027] Figure 6 The top view structure schematic diagram of the die block in the present application;

[0028] Figure 7 The structure schematic diagram of the second bending assembly in the present application;

[0029] Figure 8 This is a front structural diagram of the cutting assembly in this invention.

[0030] Icons: 1-Workbench, 11-Forming groove, 2-Lifting mechanism, 3-Molding block, 31-Through notch, 32-First groove, 33-Push plate, 4-Hanging rod, 5-First bending assembly, 51-Turntable, 52-Telescopic column, 53-Bending column, 54-Gear ring, 55-Drive gear, 6-Second bending assembly, 61-Gear disc, 62-Drive motor, 63-Bending straight plate, 631-Second groove, 7-Rebar feeding mechanism, 8-Cutting assembly, 81-Cutting plate, 811-Cutting notch, 82-Finishing cylinder, 9-Limiting stop plate, 91-Lead screw. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0034] Example

[0035] The following description, in conjunction with specific embodiments, provides further details. Figures 1-8As shown, the embodiment is a bending device for reinforcing bar processing, comprising a workbench 1, a forming groove 11 is formed on the workbench 1, a mold pressing block 3 is installed on the upper side of the forming groove 11 and is matched with the forming groove 11, the mold pressing block 3 is connected with a lifting mechanism 2 to drive; further comprising a first bending assembly 5 and a second bending assembly 6, the first bending assembly 5 and the second bending assembly 6 are both provided with two groups and are respectively symmetrically arranged on both sides of the forming groove 11, the first bending assembly 5 comprises a rotating disc 51, a bending column 53 and a telescopic column 52, the bending column 53 and the telescopic column 52 are both perpendicularly connected with the end face of the rotating disc 51, the telescopic column 52 is arranged at the middle part of the rotating disc 51, and the bending column 53 is arranged at the edge side of the rotating disc 51; the second bending assembly 6 comprises a toothed disc 61 and a driving motor 62, a bending straight plate 63 is fixed on the toothed disc 61 and is perpendicular to the end face of the toothed disc 61, the toothed disc 61 is engaged with the toothed disc 61 of another second bending assembly 6, and the toothed disc 61 is connected with the driving motor 62 to drive; specifically, in use, the reinforcing bar for processing is a straight reinforcing bar with a specified length, the reinforcing bar is placed on the forming groove 11 in a split state, which can be one reinforcing bar or multiple reinforcing bars side by side, the lifting mechanism 2 is started to drive the mold pressing block 3 to gradually move downward to the forming groove 11, the mold pressing block 3 is a column structure, the mold pressing block 3 gradually presses the reinforcing bar to be bent in the forming groove 11 under stress until the mold pressing block 3 is completely clamped into the forming groove 11 and tightly abuts, the reinforcing bar is bent into the same shape as the forming groove 11, the telescopic column 52 extends from the middle part of the rotating disc 51 to press the reinforcing bar before the mold pressing block 3 is pressed downward, so as to prevent the external reinforcing bar from deforming or deforming too much, after the middle part is pressed and bent, the first bending assembly 5 is controlled to perform end bending operation, the rotating discs 51 on both sides are reversely rotated towards one side of the mold pressing block 3, the reinforcing bar is hooked at both ends through the joint action of the bending column 53 and the telescopic column 52, after the operation is completed, the telescopic column 52 is retracted into the rotating disc 51, and the second bending assembly 6 is controlled to act, the driving motor 62 drives the toothed disc 61 to rotate, the toothed disc 61 is engaged with the other toothed disc 61 to drive the reverse rotation, so that the two bending straight plates 63 are folded towards the mold pressing block 3, the reinforcing bar is extruded and attached to the surface on both sides above the mold pressing block 3, so that the processing of the stirrup is completed, the telescopic column 52 is retracted into the rotating disc 51 in advance to effectively avoid the interference of the reinforcing bar, the device can perform at least twice bending at a time, and multiple reinforcing bars can be processed at a time, the processing efficiency of the whole device is higher, the reinforcing bar is formed around the shape of the mold pressing block 3, and the standard degree of the processed stirrup is higher.

[0036] On the basis of the above, the first groove 32 matched with the steel bar is arranged on the 3-week side of the die block 3, the second groove 631 is opened on the bending straight plate 63, and the first groove 32 and the second groove 631 are in the same straight line in the vertical direction; Specifically, the first groove 32 makes the steel bar not easy to slide along the surface of the die block 3 during bending, and the second groove 631 on the bending straight plate 63 can correspond to the first groove 32 when driving the steel bar to rotate towards the die block 3, the first groove 32 and the second groove 631 can limit the steel bar to bend in the plane where the first groove 32 and the second groove 631 are located, and ensure the processing effect of the stirrup.

[0037] The embodiment also includes a steel bar feeding mechanism 7 and a cutting assembly 8 arranged in sequence, the cutting assembly 8 is arranged beside the first bending assembly 5, the steel bar feeding mechanism 7 is arranged at the front end of the workbench 1, the cutting assembly 8 includes a material shaping cylinder 82 and a cutting plate 81, the steel bar passes through the material shaping cylinder 82, the cutting plate 81 is rotationally connected to one end of the material shaping cylinder 82, and the cutting plate 81 is provided with a cutting opening 811; Specifically, the steel bar feeding mechanism 7 can realize automatic feeding of the steel bar, the steel bar coil is inserted from one end of the steel bar feeding mechanism 7, and the steel bar is output horizontally from the right side towards the cutting assembly 8 by applying power through the steel bar feeding mechanism 7, the material shaping cylinder 82 is provided with a through hole parallel to the axis, the steel bar passes out of the through hole, and the material shaping cylinder 82 is provided with a driver for driving the cutting plate 81, when the steel bar of a specified length passes through the cutting assembly 8, the cutting plate 81 only needs to be slightly rotated by a certain angle and then rotated back to make the cutting opening 811 of the cutting plate 81 cut off the steel bar, and the steel bar of the specified length can be processed into a stirrup, thereby further improving the automation degree of the overall device.

[0038] The front end of the workbench 1 in the embodiment is provided with a limiting baffle plate 9, one end of the limiting baffle plate 9 is connected with a screw rod 91 for adjustment, and the screw rod 91 is parallel to the workbench 1; Specifically, the position of the limiting baffle plate 9 on the workbench 1 can be adjusted through the screw rod 91, and the limiting baffle plate 9 plays a role of measurement, so that when the steel bar passes through the steel bar feeding mechanism 7 and the cutting assembly 8 in sequence and stops against the limiting baffle plate 9, the distance from the limiting baffle plate 9 to the cutting plate 81 of the steel bar is the length of the specified steel bar required for processing.

[0039] The top of the die block 3 in the embodiment is provided with a through gap 31 for clamping one end of the steel bar, and the inward side of the through gap 31 is provided with a push plate 33 for pushing the steel bar; Specifically, the through gap 31 can provide a receiving position for the hook at the end of the steel bar after the bending straight plate 63 completes the processing of the stirrup, and at the same time, the through gap 31 is only open on one side, when the stirrup operation is completed, the push plate 33 is extended or retracted under the action of the cylinder or hydraulic cylinder, the end part of the steel bar is contacted by the push plate 33 to push the stirrup out of the die block 3, realizing automatic discharging for the next stirrup processing.

[0040] The mold pressing block 3 in the embodiment is provided with a hanging rod 4 for the stirrup to be hung in, and the hanging rod 4 is kept in an inclined arrangement; specifically, the hanging rod 4 is inclined towards the high side of the side of the mold pressing block 3, and when the stirrup is pushed out of the mold pressing block 3 and falls, the stirrup is hung in a ring shape on the hanging rod 4 and slides down along the inclined rod to the bottom end of the hanging rod to gradually accumulate.

[0041] In addition, the back side of the rotating disc 51 in the first bending assembly 5 is fixedly provided with a gear ring 54, and the gear ring 54 is engaged with a driving gear 55 to be driven; specifically, the rotating disc 51 is driven to rotate by the driving gear 55 which is engaged with the back side of the rotating disc 51 and the gear ring 54, so that a larger torque can be provided, and it is worth noting that the lower end of the bending straight plate 63 is provided with a reinforcing rib plate which is in contact with the end face of the rotating disc 51, so as to improve the stress intensity of the bending straight plate 63.

[0042] The rotating disc 51 and the gear disc 61 in the embodiment are both arranged on the side of the workbench 1, and the rotating disc 51 and the gear disc 61 are perpendicular to the workbench 1; specifically, the plane where the stirrup after being processed by the device is perpendicular to the table top of the workbench 1, and the rotating disc 51 and the gear disc 61 are closely related to the two times of bending of the steel bar, therefore, the two discs are perpendicular to the workbench 1, which can more effectively ensure that the flatness of the stirrup is higher.

[0043] It is worth noting that the forming groove 11 in the bending device is V-shaped, and the mold pressing block 3 is a prism structure; specifically, when the forming groove 11 is V-shaped, more figuratively, the forming groove 11 is similar to a columnar pit groove with an isosceles right triangle end face, and the mold pressing block 3 can complete the two-side bending processing of the square stirrup by once pressing into the forming groove 11.

[0044] A method for using the bending device for processing the steel bar, comprising the following steps:

[0045] S1, steel bar feeding: placing the straight steel bar with a specified length to be bent on the workbench 1, and the middle part of the steel bar is suspended above the forming groove 11, and the two ends of the steel bar are symmetrical relative to the forming groove 11, and the lengths of the two sides are kept the same;

[0046] S2, middle part of the steel bar bending: the telescopic column 52 of the rotating disc 51 is extended, the steel bar is clamped below the telescopic column 52 and in contact with it, the mold pressing block 3 is pressed down by the lifting mechanism 2 until the mold pressing block 3 gradually presses the steel bar into the bottom of the forming groove 11 until the steel bar is completely fitted, and the lifting mechanism 2 is stopped;

[0047] S3, end of the steel bar bending: the rotating discs 51 on both sides of the forming groove 11 are kept in reverse rotation, the bending column 53 is rotated towards the side of the mold pressing block 3, and the end of the steel bar is bent by a specified angle by the cooperation of the bending column 53 and the telescopic column 52;

[0048] S4, the first bending assembly 5 adjustment: telescopic column 52 retract towards the inside of the turntable 51 a distance, the turntable 51 rotates back;

[0049] S5, stirrup forming: start drive motor 62 with its gear 61 rotation, two gear 61 meshing reverse rotation, two bending straight plate 63 from the lower end of the reinforcement and towards the side of the die block 3 close to the force of the reinforcement, the reinforcement in the bending straight plate 63 under the action of the upper surface of the die block 3 close to the forming, the end of the reinforcement into the through gap 31, complete the processing of the stirrup;

[0050] S6, blanking: gear 61 rotation reset, lifting mechanism 2 drive die block 3 up a distance, the cylinder drive push plate 33 move, the stirrup from the die block 3 push down into the hanging rod 4, repeat the above steps.

[0051] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A bending device for reinforcing bar processing, comprising a work table (1), characterized in that, The workbench (1) is provided with a forming groove (11), the upper side of the forming groove (11) is provided with a matched die block (3), the die block (3) is connected with a lifting mechanism (2) to drive; It also comprises a first bending assembly (5) and a second bending assembly (6), the first bending assembly (5) and the second bending assembly (6) are both provided with two groups and are symmetrically arranged on both sides of the forming groove (11), the first bending assembly (5) comprises a rotating disc (51), a bending column (53) and a telescopic column (52), the bending column (53) and the telescopic column (52) are both connected with the end surface of the rotating disc (51) perpendicularly, the telescopic column (52) is arranged in the middle of the rotating disc (51), and the bending column (53) is arranged at the edge side of the rotating disc (51). The second bending assembly (6) comprises a toothed disc (61) and a driving motor (62), the toothed disc (61) is fixedly provided with a bending straight plate (63) and is perpendicular to the end surface of the toothed disc (61), the toothed disc (61) is engaged with the toothed disc (61) of another second bending assembly (6), and one toothed disc (61) is connected with a driving motor (62) to drive. It also comprises a reinforcing steel bar feeding mechanism (7) and a cutting assembly (8) arranged in sequence, the cutting assembly (8) is arranged beside the first bending assembly (5), the reinforcing steel bar feeding mechanism (7) is arranged at the front end of the workbench (1), the cutting assembly (8) comprises a material sorting cylinder (82) and a cutting plate (81), the reinforcing steel bar passes through the material sorting cylinder (82), the cutting plate (81) is rotatably connected to one end of the material sorting cylinder (82), and the cutting plate (81) is provided with a cutting groove (811). The front end of the workbench (1) is provided with a limiting baffle plate (9), one end of the limiting baffle plate (9) is connected with a lead screw (91) to adjust, and the lead screw (91) is parallel to the workbench (1). The top of the die block (3) is provided with a through gap (31) for clamping one end of the reinforcing steel bar, and the inward side of the through gap (31) is provided with a push plate (33) for pushing the reinforcing steel bar. The telescopic column (52) of the first bending assembly (5) can be retracted to be flush with the end surface of the rotating disc (51) to avoid the movement track of the bending straight plate (63) of the second bending assembly (6).

2. The bending device for bar processing according to claim 1, characterized by The die block (3) is annularly arranged with a first groove (32) matched with the reinforcing steel bar on the side, the bending straight plate (63) is provided with a second groove (631), and the first groove (32) and the second groove (631) are vertically arranged on the same straight line.

3. The bending device for bar processing according to claim 1, characterized by The side of the die block (3) is provided with a hanging rod (4) for hanging the stirrup, and the hanging rod (4) is arranged obliquely.

4. The bending device for bar processing according to claim 1, characterized by The back side of the rotating disc (51) is fixedly provided with a gear ring (54), and the gear ring (54) is engaged with a driving gear (55) to drive.

5. The bending device for bar processing according to claim 1, wherein The rotating disc (51) and the toothed disc (61) are both arranged beside the workbench (1), and the rotating disc (51) and the toothed disc (61) are perpendicular to the workbench (1).

6. The bending device for bar processing according to claim 1, wherein The forming groove (11) is V-shaped, and the die block (3) is a prism structure.

7. A method of using the bending device for processing reinforcing steel according to any one of claims 1-6, characterized in that, The method comprises the following steps: S1, steel bar feeding: placing a straight steel bar of a specified length to be bent on a workbench (1), with the middle part of the steel bar suspended above a forming groove (11), and the two ends of the steel bar symmetrically arranged relative to the forming groove (11) and maintaining the same length on both sides; S2, middle part bending of the steel bar: the telescopic column (52) of the rotating disc (51) is extended, the steel bar is clamped below the telescopic column (52) and in contact with the telescopic column (52), the mold pressing block (3) is driven downward by the lifting mechanism (2), until the mold pressing block (3) gradually presses the steel bar into the bottom of the forming groove (11) until the steel bar is completely attached, and the lifting mechanism (2) is stopped; S3, end bending of the steel bar: the rotating discs (51) on both sides of the forming groove (11) are kept rotating in opposite directions, the bending column (53) is rotated towards the side of the mold pressing block (3), and the end of the steel bar is bent at a specified angle by the cooperation of the bending column (53) and the telescopic column (52); S4, adjustment of the first bending assembly (5): the telescopic column (52) is retracted towards the inside of the rotating disc (51) by a distance, and the rotating disc (51) is rotated; S5, stirrup forming: the driving motor (62) is started to drive the gear plate (61) to rotate, the two gear plates (61) are engaged and rotate in opposite directions, the two bending straight plates (63) are lifted from the lower end of the steel bar and are attached to the side of the mold pressing block (3) to apply force to the steel bar, the steel bar is tightly attached to the upper surface of the mold pressing block (3) under the action of the bending straight plates (63), the end of the steel bar is clamped into the through gap (31), and the stirrup processing is completed; S6, discharging: the gear plate (61) is rotated and reset, the mold pressing block (3) is lifted by a distance by the lifting mechanism (2), the push plate (33) is moved by the air cylinder, the stirrup is ejected from the mold pressing block (3) and dropped onto the hanging rod (4), and the above steps are repeated.

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