Automobile door panel stamping device

Abstract

The invention relates to the technical field of automobile door panel stamping, and discloses an automobile door panel stamping device which comprises a plurality of stand columns and further comprises a plurality of reinforcing rods, every three reinforcing rods form a group and are fixedly connected between the front stand column and the rear stand column, and a transverse rod is fixedly connected between the left reinforcing rod and the right reinforcing rod to form a stamping frame. The cabinet door is installed between the two front stand columns; the protective cover is mounted above the plurality of upright posts and is used for top protection; the stamping assembly is arranged among the multiple stand columns and used for stamping the steel plate raw materials; and the deviation rectifying mechanism is arranged on the stamping assembly. According to the device, the deviation rectifying mechanism is arranged, the deviation rectifying rod jacked up by the first spring is used for primary limiting, and the precise matching of the push block and the fault-tolerant hole when the upper die is pressed down is combined, so that the secondary active deviation rectifying and precise positioning of a plate are realized; according to the double-positioning mechanism, the problems of inaccurate product punching position, unqualified quality and the like caused by manual feeding deviation are effectively avoided, and the consistency and the yield of products are remarkably improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile door plate stamping, in particular to an automobile door plate stamping device. BACKGROUND

[0002] The automobile door plate is an important component of the automobile body, and the manufacturing quality directly affects the appearance, sealing property and safety of the vehicle. At present, the automobile door plate is mainly manufactured by cold stamping forming of a metal plate through a large press.

[0003] As disclosed in application No. 202121610992.1, an automobile door plate stamping device is disclosed. The device is used in cooperation with a motor, a connecting rod and a sector gear. The motor is rotated to drive the connecting rod to swing. One end of the connecting rod is rotationally connected to the sector gear, and the center of the sector gear is rotationally connected to a support plate, so that the sector gear swings back and forth. The upper part of the sector gear is engaged with a gear, so that the gear rotates back and forth, and a reciprocating member swings back and forth. The cooperation of the structures automatically completes the operations of feeding, stamping and discharging through the reciprocating movement of the reciprocating member, thereby improving the work efficiency. However, when stamping the door plate, the steel plate raw material is usually placed on the lower die by manual or mechanical hand. Since there is no effective initial positioning device, the plate material is prone to be placed deviated, resulting in uneven edge allowance of the stamped product or even waste product, which needs to be repeatedly adjusted, affecting the production rhythm. Moreover, the stamping and cutting process produces a large amount of strip-shaped or frame-shaped waste. These waste materials are often wound on the die or equipment, which needs to be cleaned frequently by manual work. This not only has safety hazards, but also interrupts the continuity of production, reduces the degree of automation and production efficiency. Therefore, the automobile door plate stamping device is proposed to solve the above problems. SUMMARY

[0004] The technical problem to be solved by the application is to provide an automobile door plate stamping device in view of the deficiencies in the prior art.

[0005] To solve the above technical problems, the technical scheme adopted by the application is as follows: an automobile door plate stamping device, comprising a plurality of columns, further comprising: a plurality of reinforcing rods, three reinforcing rods are fixedly connected between the front and rear columns, and a horizontal rod is fixedly connected between the left and right reinforcing rods to form a stamping frame; a cabinet door installed between the front two columns; a protective cover installed above the plurality of columns for top protection; a stamping assembly arranged between the plurality of columns for stamping the steel plate raw material; a deviation rectifying mechanism arranged on the stamping assembly for rectifying and positioning the steel plate raw material; A discharging mechanism is arranged on the stamping assembly and used for discharging the raw material after stamping. The stamping assembly comprises: A lower fixed block is fixedly connected between the plurality of vertical columns. An upper movable block is arranged between the plurality of vertical columns, and the top of the upper movable block is fixedly connected with a hydraulic cylinder, and the top of the hydraulic cylinder is connected with the vertical column through a connecting rod, and the top is movably penetrated through the protective cover. An upper die and a lower die are respectively arranged on the upper movable block and the lower fixed block through T-shaped sliding blocks, and are used for stamping the steel plate into an automobile door panel when the upper die and the lower die are closed. The deviation correcting mechanism comprises: A plurality of deviation correcting rods are movably connected in a circular groove arranged on the lower die, and a spring is arranged in the circular groove, and two ends of the spring are respectively connected with the bottom of the inner wall of the circular groove and the bottom of the deviation correcting rod, and are used for pushing the deviation correcting rod upward. When the upper die and the lower die are closed, the deviation correcting rods are pushed downward into the circular groove.

[0006] Preferably, the deviation correcting mechanism further comprises: Two fault tolerance holes are symmetrically arranged on the lower die. The bottom of the upper die is fixedly connected with a push block, and when the upper die and the lower die are closed, the push block pushes the steel plate to the center and pushes the push block into the fault tolerance hole.

[0007] Preferably, the stamping assembly further comprises: A cutter and a cutter are arranged below the upper die, and are used for cutting the excess part of the steel plate after stamping. A plurality of waste cutters are fixedly connected to the bottom of the upper die and located outside the cutter, and are used for cutting and segmenting the waste. A plurality of inclined grooves are arranged around the upper side of the lower die, and are used for discharging the waste.

[0008] Preferably, the discharging mechanism comprises: A plurality of discharging grooves are arranged above the lower die to form the shape of the automobile door panel, and the inner wall of each discharging groove is provided with a discharging sliding block for pushing the material upward. A plurality of limiting columns are fixedly connected to the bottom of the inner wall of each discharging groove, and the discharging sliding block is slidingly connected to the outer wall of the limiting column. A spring is arranged on the outer wall of each limiting column, and is used for pushing the discharging sliding block upward.

[0009] Preferably, the limiting columns on the inner wall of each discharging groove are different in height, so that each discharging sliding block is located at different heights to cooperate with the upper die to stamp the shape of the automobile door panel.

[0010] Preferably, a plurality of L-shaped holes are arranged on the lower mold and communicate with the discharge chute. A plurality of waste pushing rods are arranged in the L-shaped holes and connected with the discharge slider, and when the discharge slider moves upward, the waste after cutting is pushed to slide onto the chute.

[0011] Preferably, the dust removal mechanism comprises: A conical block is arranged in a conical groove arranged on the top of the discharge slider in the middle; A fixed sleeve is fixedly connected in a through hole arranged at the bottom of the conical groove, and the bottom of the conical block is fixedly connected with an air pipe and located in the inner wall of the fixed sleeve and slides; A plurality of air holes are arranged in the conical block at equal circumferences and communicate with the air pipe and are used for discharging air outward; A spring three is arranged in an annular groove arranged on the fixed sleeve and is attached to the bottom of the conical block and is used for pushing the conical block upward to separate from the conical groove.

[0012] Preferably, the dust removal mechanism further comprises: A limiting ring is fixedly arranged on the outer wall of the air pipe, and the bottom of the discharge slider is fixedly connected with a synchronous sleeve, and the synchronous sleeve is arranged on the outer wall of the limiting ring and is used for synchronously pulling the limiting ring upward; The bottom of the air pipe movably penetrates the lower mold, and a plurality of spiral grooves are arranged in the lower mold; The outer wall of the air pipe is fixedly connected with a plurality of sliding columns, and the sliding columns are slidingly connected with the inner wall of the spiral groove.

[0013] The above technical scheme can bring the following beneficial effects: 1. The automobile door panel stamping device, by setting the deviation rectifying mechanism, and using the deviation rectifying rod of the spring one to preliminarily limit, and combining the precise cooperation of the push block and the fault tolerance hole when the upper mold is pressed, realizes the secondary active deviation rectification and accurate positioning of the plate, and the double positioning mechanism effectively avoids the problems of inaccurate stamping position and unqualified quality caused by manual feeding deviation, and significantly improves the consistency and yield of the product.

[0014] 2. The automobile door panel stamping device, by setting the waste cutter, the peripheral waste is immediately cut into small pieces during stamping, and combined with the chute around the mold, the waste can be automatically and smoothly slid and collected, thereby solving the problems of difficult handling and easy winding of the long strip-shaped continuous waste in the traditional process, ensuring the continuous and stable operation of the production line, facilitating the centralized recovery and management of the waste, and the waste pushing rod linked with the discharge slider can push the small pieces of waste remaining on the surface of the mold or near the cutting edge at the same time when the workpiece is ejected, so that the waste falls into the waste chute, realizes the automatic cleaning of the working area, and avoids the waste accumulation affecting the precision of the next stamping or damaging the surface of the mold.

[0015] 3、The automobile door plate stamping device, through the setting of the discharging mechanism, utilizes the elastic force of spring two to drive the upward movement of the discharging slider, and smoothly ejects the formed workpiece from the mold cavity, in particular, by setting the limiting columns at different positions to different heights, the ejection action is perfectly matched with the complex three-dimensional shape of the automobile door plate, ensuring that the workpiece is uniformly stressed and smoothly demolded, effectively solving the industry pain points of workpiece easy to be stuck in deep cavity mold and difficult to take out, providing convenient conditions for subsequent automatic grabbing.

[0016] 4、The automobile door plate stamping device, through the setting of the dust removal mechanism, ingeniously utilizes the up-down movement of the discharging slider as a power source, converts the linear motion into the rotary motion of the air pipe and the conical block through the cooperation of the spiral groove and the slide column, and realizes the instantaneous blowing of high-pressure gas under the action of the spring, which can automatically clean the mold cavity without dead angle after each mold opening, effectively removing dust and fine chips, greatly improving the cleanliness of the stamping environment, and playing an important role in ensuring the surface quality of the workpiece and prolonging the service life of the mold. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure of the present application is shown in the figure; Figure 2 The structure of the present application is shown in the figure; Figure 3 The structure of the present application is shown in the figure; Figure 4 The structure of the present application is shown in the figure; Figure 5 The structure of the present application is shown in the figure; Figure 4 The structure of the present application is shown in the figure; Figure 6 The structure of the present application is shown in the figure; Figure 7 The structure of the present application is shown in the figure; Figure 8 The structure of the present application is shown in the figure; Figure 9 The structure of the present application is shown in the figure; Figure 10 The structure of the present application is shown in the figure; Figure 9 The structure of the present application is shown in the figure.

[0018] In the figure: 1, stand column; 2, reinforcing rod; 3, cabinet door; 4, protective cover; 5, hydraulic cylinder; 6, deviation correction mechanism; 61, deviation correction rod; 62, spring one; 63, fault tolerance hole; 64, push block; 7, discharging mechanism; 71, discharging groove; 72, discharging slider; 73, limiting column; 74, spring two; 75, L-shaped hole; 76, waste push rod; 8, dust removal mechanism; 81, conical block; 82, air pipe; 83, fixed sleeve; 84, spring three; 85, limiting ring; 86, synchronous sleeve; 87, slide column; 9, stamping assembly; 91, upper movable block; 92, lower fixed block; 93, upper die; 94, lower die; 95, cutter one; 96, cutter two; 97, waste cutter. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Please refer to Figures 1-10 An embodiment of the present application is: a stamping device for automobile door plate, comprising a plurality of columns 1, further comprising: A plurality of reinforcing rods 2 are fixedly connected between the front and rear two columns 1 in groups of three, and a cross bar is fixedly connected between the left and right two reinforcing rods 2 to form a stamping frame; A cabinet door 3 is installed between the front two columns 1; A protective cover 4 is installed above the plurality of columns 1 between them for top protection; A stamping assembly 9 is arranged between the plurality of columns 1 for stamping of steel plate raw materials; A deviation correction mechanism 6 is arranged on the stamping assembly 9 for deviation correction and positioning of the steel plate raw materials; A discharge mechanism 7 is arranged on the stamping assembly 9 for discharging of the raw materials after stamping is completed; The stamping assembly 9 comprises: A lower fixed block 92 is fixedly connected between the plurality of columns 1; An upper movable block 91 is arranged between the plurality of columns 1, and the top of the upper movable block 91 is fixedly connected with a hydraulic cylinder 5, and the top of the hydraulic cylinder 5 is connected with the column 1 through a connecting rod, and the top is movably penetrated through the protective cover 4; An upper die 93 and a lower die 94 are respectively arranged on the upper movable block 91 and the lower fixed block 92 through T-shaped sliding blocks, for stamping the steel plate raw materials into automobile door plates when the dies are closed; The deviation correction mechanism 6 comprises: A plurality of deviation correction rods 61 are movably connected in a circular groove arranged on the lower die 94, and a spring one 62 is arranged in the circular groove, and the two ends of the spring one 62 are respectively connected with the bottom of the inner wall of the circular groove and the bottom of the deviation correction rod 61, for pushing the deviation correction rod 61 upward; When the upper die 93 and the lower die 94 are closed, the correction deviation rod 61 is lowered into the circular groove.

[0021] The correction deviation mechanism 6 further comprises: Two fault-tolerant holes 63 are symmetrically arranged on the lower die 94; The bottom of the upper die 93 is fixedly connected with a push block 64, and when the die is closed, the push block 64 pushes the steel plate raw material to the center and pushes the push block 64 into the fault-tolerant hole 63.

[0022] The stamping assembly 9 further comprises: A cutter one 95 and a cutter two 96 are arranged below the upper die 93 and are used to cut the excess part of the steel plate after stamping; A plurality of waste cutters 97 are fixedly connected to the bottom of the upper die 93 and are located on the outer wall of the cutter one 95, which are used to cut and segment the waste; A plurality of inclined grooves are arranged around the upper side of the lower die 94, which are used for waste discharge.

[0023] The discharge mechanism 7 comprises: A plurality of discharge grooves 71 are arranged above the lower die 94 to form the shape of the automobile door plate, and the inner wall of each discharge groove 71 is provided with a discharge slider 72 for pushing the material upward; A plurality of limiting columns 73 are fixedly connected to the bottom of the inner wall of each discharge groove 71, and the discharge slider 72 is slidingly connected to the outer wall of the limiting column 73; A spring two 74 is sleeved on the outer wall of each limiting column 73, and is used to push the discharge slider 72 upward.

[0024] The limiting columns 73 on the inner wall of each discharge groove 71 are different in height, so that each discharge slider 72 is located at different heights to cooperate with the upper die 93 to stamp the shape of the automobile door plate.

[0025] A plurality of L-shaped holes 75 are arranged on the lower die 94, and the L-shaped holes 75 are communicated with the discharge grooves 71; A plurality of waste push rods 76 are arranged in the L-shaped holes 75 and are connected with the discharge sliders 72, and when moving upward, the waste push rods 76 push the cut waste to smoothly slide into the inclined grooves.

[0026] The dust removal mechanism 8 comprises: A conical block 81 is arranged in a conical groove arranged on the top of the middle discharge slider 72; A fixed sleeve 83 is fixedly connected in a through hole arranged at the bottom of the conical groove, and the bottom of the conical block 81 is fixedly connected with an air pipe 82 and is slidingly arranged in the inner wall of the fixed sleeve 83; A plurality of air holes are arranged at equal intervals in the conical block 81 and are communicated with the air pipe 82, which are used to discharge gas outwardly; Spring three 84, set in the annular groove of fixed sleeve 83, adhere to the bottom of the tapered block 81, for pushing up the tapered block 81 from the tapered groove.

[0027] The dust removal mechanism 8 further comprises: The limiting ring 85 is fixed on the outer wall of the air pipe 82, and the bottom of the discharge slider 72 is fixedly connected with the synchronous sleeve 86, and the synchronous sleeve 86 is sleeved on the outer wall of the limiting ring 85, for synchronously pulling the limiting ring 85 upward; The bottom of the air pipe 82 movably penetrates the lower mold 94, and a plurality of spiral grooves are formed in the lower mold 94; The outer wall of the air pipe 82 is fixedly connected with a plurality of slide columns 87, and the slide columns 87 are slidably connected in the inner wall of the spiral groove Working principle: the operator opens the cabinet door 3, and places the steel plate to be punched on the lower mold 94, at this time, due to the elastic force of the spring one 62, a plurality of correction rods 61 are in the state of upward stretching, protruding from the upper surface of the lower mold 94, and the upward correction rods 61 together form a positioning area, which preliminarily limits the placed steel plate, preventing it from deviating too much from the effective punching area; Subsequently, accurate positioning and correction during the closing process, start the hydraulic cylinder 5, drive the upper movable block 91 to drive the upper mold 93 to move downward, start closing, at this time, the upper mold 93 will first contact the upward stretching correction rod 61, and press it downward, forcing the correction rod 61 to overcome the elastic force of the spring one 62 and retract into the circular groove of the lower mold 94, this process ensures that the closing action will not be blocked by the interference of the correction rod 61, while the upper mold 93 is pressed, the push block 64 fixed on the bottom of the upper mold 93 first contacts the steel plate, if the steel plate is placed with deviation, the inclined surface of the push block 64 will push the steel plate to move forward and backward in the mold cavity until it is located in the central position of the lower mold 94, finally, when the mold is completely closed, the push block 64 is just inserted into the tolerance hole 63, completing the accurate positioning and correction of the steel plate, ensuring the absolute accuracy of the punching position; When the upper mold 93 and the lower mold 94 are completely closed, the steel plate between them is punched into the shape of an automobile door panel by using a large pressure, at the same time, the cutter one 95 and the cutter two 96 installed on the upper mold 93 cooperate with the corresponding knife edge on the lower mold 94 to cut off the excess waste material around the formed door panel, at the same time, the waste cutter 97 simultaneously cuts the long strip-shaped waste material into small pieces, these small pieces of waste material then fall on the inclined grooves around the lower mold 94 and slide down along the inclined grooves for collection, which is convenient for centralized processing and avoids the problem of long strip waste winding the equipment; After stamping, the hydraulic cylinder 5 drives the upper die 93 to rise back, at this time, due to the disappearance of the pressure of the upper die 93, the spring 74 begins to release the elastic force, and pushes the discharge slider 72 upwards, due to the different heights of the limiting columns 73 in different discharge grooves 71, the heights of the discharge sliders 72 being pushed up are also different, they jointly act, stably lift the formed automobile door plate workpiece from the cavity of the lower die 94, make it separate from the die, greatly facilitate the manipulator or the operator to take the workpiece, avoid the workpiece from being clamped, and when the discharge slider 72 moves upwards, the waste pushing rod 76 connected with the discharge slider 72 moves upwards in the L-shaped hole 75, the top end of the waste pushing rod 76 pushes the small waste materials possibly adhered to the surface of the die or not completely falling upwards, ensures that the small waste materials are completely loosened and slide into the chute, and automatic cleaning of the waste materials is realized. During the up-down movement of the discharge slider 72, the dust removal mechanism 8 works synchronously, first, when the discharge slider 72 is pressed down, that is, when the die is closed, the slide column 87 on the air pipe 82 moves along the spiral groove in the lower die 94, forces the air pipe 82 to move downwards while rotating together with the conical block 81 at the top of the air pipe 82, the downward movement makes the conical block 81 fit together with the conical groove of the discharge slider 72, at this time, the spring 84 is compressed, and when the die is opened, the discharge slider 72 moves upwards under the action of the spring 74, the pressure on the air pipe 82 and the conical block 81 is released, the compressed spring 84 rebounds upwards, at the same time, the limiting ring 85 is driven to move upwards through the synchronous sleeve 86, so as to pull the air pipe 82 upwards, at this time, the conical block 81 is pushed upwards to reset and move away from the conical groove, in the process, the slide column 87 moves along the spiral groove and rotates, so as to drive the air pipe 82 to rotate together with the conical block 81, at this time, the gas blown out by the air pipe 82 can be blown out along the plurality of air holes on the conical block 81, and the mold cavity surface can be swept by changing the blowing angle, so that the dust and small debris generated by stamping are completely removed, a clean work station is provided for the next stamping, and the product quality is ensured.

[0028] The present application provides a kind of automobile door plate stamping device, the method and approach of many specific implementation this technical scheme, above-mentioned only it is preferred embodiment of the present application, it should be pointed out, for the ordinary skill in the art of this technology, without departing from the principle of the present application, can make several improvements and refinements, these improvements and refinements also should be considered as the protection scope of the present application. The components not specified in the embodiment can be realized by existing technology.

Claims

1. A stamping device for automobile door panels, comprising multiple columns (1), characterized in that, Also includes: Multiple reinforcing rods (2) are fixedly connected in groups of three between the front and rear columns (1), and crossbars are fixedly connected between the left and right reinforcing rods (2) to form a stamping frame; Cabinet door (3) is installed between the two front uprights (1); A protective cover (4) is installed above the columns (1) for top protection; The stamping assembly (9) is set between multiple columns (1) and is used for stamping steel plate raw materials; The correction mechanism (6) is installed on the stamping assembly (9) and is used to correct and position the steel plate raw material; The discharge mechanism (7) is set on the stamping assembly (9) and is used to discharge the raw material after stamping. The stamping assembly (9) includes: The lower fixing block (92) is fixedly connected between multiple columns (1); The upper movable block (91) is set between multiple columns (1), and the top of the upper movable block (91) is fixedly connected to a hydraulic cylinder (5), and the top of the hydraulic cylinder (5) is connected to the column (1) through a connecting rod, and the top moves through the protective cover (4). The upper mold (93) and the lower mold (94) are respectively mounted on the upper movable block (91) and the lower fixed block (92) via T-shaped sliders, and are used to stamp the steel plate raw material into automobile door panels when the mold is closed; The correction mechanism (6) includes: Multiple correction rods (61) are movably connected to a circular groove opened on the lower mold (94), and a spring (62) is provided in the circular groove. The two ends of the spring (62) are respectively connected to the bottom of the inner wall of the circular groove and the bottom of the correction rod (61) to push the correction rod (61) upward. When the upper mold (93) and the lower mold (94) are closed, the anti-alignment rod (61) moves down into the circular groove.

2. The automobile door panel stamping device according to claim 1, characterized in that: The correction mechanism (6) also includes: Two tolerance holes (63) are provided on the lower mold (94) and are symmetrical front and back; The bottom of the upper mold (93) is fixedly connected to a push block (64), and when the mold is closed, the push block (64) pushes the steel plate material to the center and pushes the push block (64) into the fault hole (63).

3. The automobile door panel stamping device according to claim 2, characterized in that: The stamping assembly (9) also includes: Cutting blade 1 (95) and cutting blade 2 (96) are set below the upper mold (93) and are used to cut off the excess part of the stamped steel plate when the mold is closed; Multiple waste cutters (97) are fixedly connected to the bottom of the upper mold (93) and located on the outer wall of cutter one (95) for cutting and segmenting waste; The lower mold (94) has inclined grooves around its upper perimeter for waste material discharge.

4. The automobile door panel stamping device according to claim 3, characterized in that: The discharge mechanism (7) includes: Multiple discharge slots (71) are provided above the lower mold (94) to form the shape of a car door panel, and each discharge slot (71) has a discharge slider (72) on its inner wall for pushing the material upward. Each discharge trough (71) has multiple limiting posts (73) fixedly connected to the bottom of its inner wall, and the discharge slider (72) is slidably connected to the outer wall of the limiting posts (73); Each limiting post (73) is fitted with a spring (74) on its outer wall, which is used to push the discharge slider (72) upward.

5. The automobile door panel stamping device according to claim 4, characterized in that: The limiting post (73) on the inner wall of each discharge slot (71) has a different height, so that each discharge slider (72) is located at a different height to cooperate with the upper mold (93) to stamp the shape of the car door panel.

6. The automobile door panel stamping device according to claim 5, characterized in that: Multiple L-shaped holes (75) are formed on the lower mold (94), and the L-shaped holes (75) are connected to the discharge groove (71); Multiple waste push rods (76) are set in the L-shaped hole (75) and connected to the discharge slider (72). When they move upward, they push the cut waste material to slide smoothly into the inclined groove.

7. The automobile door panel stamping device according to claim 6, characterized in that: The dust removal mechanism (8) includes: A conical block (81) is disposed in a conical groove opened at the top of the discharge slider (72) in the middle; The fixed sleeve (83) is fixedly connected to the through hole opened at the bottom of the conical groove, and the bottom of the conical block (81) is fixedly connected to the air pipe (82) and slides on the inner wall of the fixed sleeve (83); Multiple air holes are arranged in a circular pattern inside the conical block (81) and connected to the air pipe (82) for discharging gas outwards; Spring 3 (84) is set in the annular groove opened on the fixed sleeve (83) and fits against the bottom of the conical block (81) to push the conical block (81) upward away from the conical groove.

8. The automobile door panel stamping device according to claim 7, characterized in that: The dust removal mechanism (8) also includes: The limiting ring (85) is fixedly sleeved on the outer wall of the air pipe (82), and the bottom of the discharge slider (72) is fixedly connected to the synchronous sleeve (86), and the synchronous sleeve (86) is sleeved on the outer wall of the limiting ring (85) for synchronously pulling the limiting ring (85) upward. The bottom of the air tube (82) extends through the lower mold (94), and multiple spiral grooves are provided inside the lower mold (94); The outer wall of the trachea (82) is fixedly connected with a plurality of sliding columns (87), and the sliding columns (87) are slidably connected to the inner wall of the spiral groove.

Images