One-time extrusion forming equipment for head and flange

Abstract

The invention relates to the technical field of part forming machining, and discloses head and flange one-time extrusion forming equipment which comprises an extrusion module. The extrusion module comprises an upper die, a lower die, an upset head die, a driving assembly and a positioning assembly, the upper die and the lower die further comprise positioning inserts, head inserts and forming inserts, and the positioning inserts, the head inserts and the forming inserts are detachably installed on the upper die plate and the lower die plate. The complex process that the flange needs to be upset independently and then the head needs to be upset during machining and manufacturing of a traditional stamping die and a forging machine is avoided, the production process is simplified, and the production efficiency is improved. Products of various specifications and sizes are manufactured by quickly replacing inserts and upset head dies of different specifications, quick remodeling is achieved, automatic feeding is achieved by arranging the feeding module, the feeding module is used for automatically feeding blanks to the extrusion module, and the machining and production efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of part forming processing, in particular to a head and flange one-time extrusion forming equipment. BACKGROUND

[0002] In the field of automobile part manufacturing, stamping dies and stamping machines or forging machines are widely used in the production of various connecting parts. For the head and flange part of an automobile exhaust pipe hook, separate processing steps are usually required for manufacturing the head and flange part, resulting in low production efficiency. In addition, when processing products of different types and lengths, the traditional processing method needs to disassemble and assemble the complete upper and lower dies, and a large amount of time and labor is required for each type change, which seriously restricts the batch production of the automobile exhaust pipe hook. In view of the above problems, the application is proposed. SUMMARY

[0003] The application aims to provide a head and flange one-time extrusion forming equipment, which can complete the upsetting of the flange part and the head at one time, avoids the complex process of separately upsetting the flange and then upsetting the head in the traditional stamping die and forging machine manufacturing process, and can realize rapid type change without disassembling and assembling the complete upper and lower dies, thereby reducing the type change time and labor cost.

[0004] The application is implemented through the following technical solutions.

[0005] The head and flange one-time extrusion forming equipment comprises an extrusion module; the extrusion module comprises an upper die, a lower die, a head upsetting die, a driving assembly and a positioning assembly; the upper die comprises an upper die plate, the lower die comprises a lower die plate, and the upper die and the lower die each further comprise a positioning insert block, a head insert block and a forming insert block which are detachably installed on the upper die plate and the lower die plate; the forming insert block and the positioning insert block have a flange part forming area therebetween, and the head insert block and the forming insert block have a head forming area therebetween; the driving assembly comprises a head upsetting drive and a die drive, the head upsetting drive is used to drive the head upsetting die, the head upsetting die is detachably installed, and the die drive is used to drive the upper die and the lower die to close; the positioning assembly is arranged opposite to the head upsetting die and used to contact the end of a blank; the positioning assembly is movably arranged and used to adapt to blanks of different lengths; after the upper die and the lower die are closed, the blank is clamped, one end of the blank is extruded by the head upsetting die, the other end of the blank contacts the positioning assembly, the head of the blank is formed under the action of the head upsetting die and the head forming area, and the flange part of the blank is formed under the action of the flange part forming area.

[0006] The positioning insert, the head insert and the forming insert are matched with the header die and the positioning assembly to realize the one-time forming of the head and the flange of the automobile exhaust pipe hook, avoid the complex process of separately heading the flange and then heading the head in the traditional stamping die and the machining manufacturing, simplify the production process and improve the production efficiency.

[0007] The positioning insert, the head insert, the forming insert and the header die are detachably installed, and the positioning assembly is movably arranged to adapt to different lengths of blanks, realize the production of products of various specifications and sizes by quickly replacing inserts and header dies, realize the quick changeover, and greatly reduce the changeover time and labor cost without disassembling and assembling the complete upper and lower dies.

[0008] The header driving and the die driving preferably adopt hydraulic cylinders.

[0009] Further, the head and flange one-time extrusion forming equipment further comprises a feeding module for automatically feeding the blank to the extrusion module, the feeding module comprises a hopper for accommodating the blank, a push piece for controlling the size of the bottom opening of the hopper, a material separating plate for receiving the blank, a feeding wheel and a blank slide, the push piece is connected with a push piece driving assembly, the material separating plate is connected with a discharging driving assembly, the feeding wheel is connected with a rotary drive, and a material groove is arranged on the feeding wheel; the push piece releases one blank onto the material separating plate, the discharging driving assembly moves the material separating plate to make the blank enter the material groove of the feeding wheel, the feeding wheel rotates by a certain angle to make the blank enter the blank slide, and the blank enters the extrusion module along the blank slide to realize automatic feeding and further improve the processing production efficiency.

[0010] Optionally, a discharging manipulator is further arranged in the scheme, which automatically discharges the product after processing.

[0011] Further, the feeding module further comprises a detection module for detecting whether the blank is qualified, and the detection module is electrically connected with the rotary drive of the feeding wheel, and when the blank is unqualified, the feeding wheel reverses to transport the blank to the discharging area.

[0012] The arrangement of the detection module realizes the detection of the blank in the feeding stage and eliminates the unqualified blank before processing.

[0013] Further, the detection module comprises a length detection module and a diameter detection module, and the length detection module and the diameter detection module can adopt photoelectric sensors, image sensors, etc.

[0014] Further, the detection module further comprises an adjusting assembly for adjusting the position of the blank in the material groove of the feeding wheel.

[0015] The adjusting assembly can adopt a cylinder, a hydraulic cylinder or a lead screw linear module. Since the axial position of the blank entering the chute is not fixed, when the blank enters the extrusion module from the blank slide, in order to avoid the blank colliding with the header die and the positioning assembly and causing the blank to be unable to be positioned, the distance between the header die and the positioning assembly needs to be adjusted to be greater than the length of the blank, which leads to a long movement stroke of the header die in the subsequent processing process, which is not conducive to further improving the production rhythm. The adjusting assembly is adopted to adjust the axial position of the blank (different lengths of the blank correspond to different positions), so that the position range of the blank when entering the extrusion module from the blank slide is approximately consistent or consistent, so that the header die does not need to retreat a large distance, which is conducive to further improving the production rhythm.

[0016] Further, the extrusion module further comprises a sliding plate, a sliding rail, a nut and a push rod bolt, the sliding plate is installed on the sliding rail, the header drive is connected with the sliding plate, the push rod bolt is installed on the sliding plate, and the nut can be connected with the push rod bolt to install and fix the header die.

[0017] Further, the positioning insert and the head insert are connected with the upper die plate and the lower die plate through a connecting piece, the forming insert is located between the positioning insert and the head insert, and the two ends of the forming insert abut against the positioning insert and the head insert, so that the forming insert can be quickly disassembled and replaced.

[0018] Optionally, the forming insert can also be connected through a connecting piece.

[0019] Further, the upper die plate and the lower die plate are provided with groove positions for installing the positioning insert and the forming insert, so as to facilitate quick positioning and installation.

[0020] Further, the positioning assembly comprises an adjusting lead screw, and rotating the adjusting lead screw can realize the adaptation to blanks of different lengths.

[0021] Further, the head and flange one-time extrusion forming equipment further comprises an equipment frame and a grating safety device, the grating safety device is arranged at a region where the extrusion module is located, and in the working process of the extrusion module, if it is detected that a person enters, a shutdown instruction is sent to the control system, so as to play a safety protection role.

[0022] The beneficial effects of the present application: by adopting the positioning insert, head insert and forming insert, cooperating with the header die and positioning assembly, the forming of the head and flange of the automobile exhaust pipe hook is completed at one time, avoiding the complex process of separately upsetting the flange and then upsetting the head during the manufacturing of the traditional stamping die and forging machine, simplifying the production process and improving the production efficiency. The positioning insert, head insert, forming insert and header die are detachably installed, and the positioning assembly is movably arranged, which can adapt to different lengths of blanks, and different specifications of inserts and header dies are quickly changed to realize the production of products of various specifications and sizes, realizing quick changeover, without disassembling and assembling the whole upper and lower dies, greatly reducing the changeover time and labor cost.

[0023] By setting the feeding module, the feeding module is used for automatically feeding the blank to the extrusion module, realizing automatic feeding and further improving the processing production efficiency, and the blank can be detected during the feeding stage, and unqualified blanks are removed before processing. By setting the adjusting assembly, the axial position of the blank during feeding is adjusted, which is beneficial to further improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0025] The present application will be further described below in combination with the drawings and embodiments.

[0026] Figure 1 It is the overall structure schematic diagram of the head and flange one-time extrusion forming equipment;

[0027] Figure 2 It is the structure schematic diagram of the extrusion module and the feeding module;

[0028] Figure 3 It is the structure schematic diagram of the extrusion module;

[0029] Figure 4 It is the structure schematic diagram of the extrusion module from another perspective;

[0030] Figure 5 It is the explosion structure schematic diagram of the upper die and the lower die;

[0031] Figure 6 It is the structure schematic diagram of the feeding module;

[0032] Figure 7 It is the internal structure schematic diagram of the feeding module;

[0033] Figure 8 is a sectional view of the feeding module;

[0034] Figure 9 is a structural schematic view of the detection module;

[0035] Figure 10 is a schematic view after the blank is formed;

[0036] In the figure: equipment frame 1;

[0037] Extrusion module 2: bottom plate 201, left baffle 202, right baffle 203, adjusting lead screw 204, header hydraulic cylinder 205, die hydraulic cylinder 206, header die 207, die frame 208, upper die plate 209, upper positioning insert 210, upper head insert 211, lower head insert 212, lower die plate 213, lower positioning insert 214, sliding plate 215, sliding rail 216, lower forming insert 217, nut 218, push rod bolt 219, upper forming insert 220, guide column mounting hole 221;

[0038] Feeding module 3: hopper 301, blank slide 302, paddle driving assembly 303, feeding wheel 304, material blocking plate 305, material discharging driving assembly 306, material blocking plate 307, paddle 308, detection module 309, discharging port 310, feeding port 311, adjusting assembly 312, sensor module 313;

[0039] Grating safety device 4, hydraulic station 5, blank 6. DETAILED DESCRIPTION

[0040] The application will be described in detail below. Figures 1-10 The application will be described in detail below.

[0041] Example 1:

[0042] The head and flange one-time extrusion forming equipment of the application comprises an equipment frame 1, an extrusion module 2, a feeding module 3 and a grating safety device 4.

[0043] The extrusion module 2, the feeding module 3 and the grating safety device 4 are all installed on the equipment frame 1, the grating safety device 4 is arranged at the area where the extrusion module is located, and the grating safety device 4 is used for detecting whether a person enters the working area; when an abnormality is detected, an instruction is sent to the control system, and the operation of all hydraulic cylinders is locked.

[0044] In the working process of the extrusion module, if a person or object enters, a stop instruction is sent to the control system, thereby playing a safety protection role.

[0045] For example, Figure 3 , Figure 4The extrusion module 2 comprises an upper die, a lower die, a header die 207, a driving assembly, a positioning assembly, a base plate 201, a left baffle 202, a right baffle 203, a die frame 208, a sliding plate 215, a sliding rail 216, a nut 218 and a push rod bolt 219.

[0046] The die frame 208 is installed on the base plate 201, and the base plate 201 is connected with a workbench of the equipment frame 1.

[0047] The upper die comprises an upper die plate 209, and the lower die comprises a lower die plate 213. A gasket plate is installed on the die frame 208, and the lower die plate 213 is detachably installed on the gasket plate.

[0048] The upper die plate 209 and the lower die plate 213 are both provided with groove positions for installing positioning inserts and forming inserts, facilitating quick positioning and installation.

[0049] The upper die further comprises an upper positioning insert 210, an upper head insert 211 and an upper forming insert 220 which are detachably installed on the upper die plate 209. The lower die further comprises a lower positioning insert 214, a lower head insert 212 and a lower forming insert 217 which are detachably installed on the lower die plate 213. The positioning insert and the head insert are connected with the upper die plate 209 and the lower die plate 213 by connecting pieces, which can be selected from bolts and positioning pins. The forming insert is located between the positioning insert and the head insert, and the two ends of the forming insert abut against the positioning insert and the head insert, and is installed by extrusion or interference, and can be quickly disassembled and replaced. In other embodiments, the forming insert can also be connected by connecting pieces.

[0050] As shown in the drawings, Figure 5 The forming insert and the positioning insert have a flange portion forming area therebetween, the bottom of the forming insert has a protruding area abutting against the positioning insert, the head insert and the forming insert have a head portion forming area therebetween, and the forming insert and the positioning insert are both provided with recesses for accommodating the blank 6.

[0051] The driving assembly comprises a header driving and a die driving. In this embodiment, the header driving and the die driving both adopt hydraulic cylinders. A hydraulic station 5 is arranged in the equipment frame 1. The header driving preferably adopts a 40-ton hydraulic cylinder, which is the header hydraulic cylinder 205 in the figure. The die driving preferably adopts an 8-ton hydraulic cylinder, which is the die hydraulic cylinder 206 in the figure. The header hydraulic cylinder 205 is installed on the left baffle 202, and the die hydraulic cylinder 206 is installed on the die frame 208. The die hydraulic cylinder 206 is connected with the upper die plate 209 by a bolt.

[0052] The sliding plate 215 is installed on the sliding rail 216. The header hydraulic cylinder 205 is connected with the sliding plate 215. The push rod bolt 219 is installed on the sliding plate 215. The nut 218 can be connected with the push rod bolt 219 to install and fix the header die 207. When replaced, the nut 218 is unscrewed for replacement.

[0053] Preferably, at least two sets of guide pillar mounting holes 221 are arranged on the upper die plate 209 and the lower die plate 213, and guide pillars and springs can be mounted in the guide pillar mounting holes 221 to play a guiding role.

[0054] The header drive is used to drive the header die 207, the die drive is used to drive the upper die and the lower die to close the die, and the positioning assembly is arranged opposite to the header die 207 and used to contact the end of the blank. The positioning assembly is movably arranged and used to adapt to blanks of different lengths. The positioning assembly includes an adjusting screw rod 204 mounted on the right baffle plate 203. Rotating the adjusting screw rod 204 can adapt to blanks of different lengths.

[0055] The drive assembly preferably adopts PLC electrical control of pressure and displacement, and cooperates with a sensor group including a photoelectric switch and a displacement sensor to detect the positions of the workpiece and the die, accurately control the pressure and the displacement, realize accurate positioning and accurate control of the force, and ensure the consistency and stability of the product quality. A touch display screen can be arranged on the equipment frame 1. The PLC controller communicates with the touch display screen through an industrial bus to display working condition parameters and state feedback.

[0056] After the upper die and the lower die are closed, the blank is clamped, one end of the blank is extruded by the header die 207, the other end of the blank contacts the positioning assembly, the head of the blank is formed under the action of the header die 207 and the head forming area, and the flange of the blank is formed under the action of the flange forming area. After forming, the blank is as shown in Figure 10 .

[0057] The positioning insert, the head insert and the forming insert are used in cooperation with the header die 207 and the positioning assembly to realize the one-time forming of the head and the flange of the automobile exhaust pipe hook, avoid the complex process of separately heading the flange and then heading the head in the traditional stamping die and forging and machining manufacturing, simplify the production process, and improve the production efficiency.

[0058] The positioning insert, the head insert, the forming insert and the header die 207 are detachably installed, the positioning assembly is movably arranged and can adapt to blanks of different lengths, different specifications of inserts and header dies are quickly changed to realize the production of products of various specifications and sizes, rapid changeover is realized, the entire upper die and lower die do not need to be disassembled and installed, and the changeover time and labor cost are greatly reduced.

[0059] The feeding module 3 is used to automatically feed the blank to the extrusion module 2.

[0060] As Figures 6-8 shown in the figure, the feeding module 3 includes a hopper 301 for accommodating the blank, a dial piece 308 for controlling the size of the bottom opening of the hopper 301, a blank receiving plate 307, a feeding wheel 304 and a blank slide 302.

[0061] The push piece 308 is connected with the push piece driving assembly 303, the push piece driving assembly 303 is preferably a hydraulic cylinder, and the push piece 308 is rotationally connected with the hopper 301. The push piece driving assembly 303 controls the swing of the push piece 308, thereby controlling the opening at the bottom of the hopper 301 for releasing the blank. The push piece 308 can be symmetrically provided with two groups or provided in a plate shape.

[0062] The material separation plate 307 is connected with the material releasing driving assembly 306, the material releasing driving assembly 306 is preferably a hydraulic cylinder, and the push piece 308 releases one blank to the material separation plate 307.

[0063] The feeding wheel 304 is connected with a rotary drive, the rotary drive is preferably a motor, and the feeding wheel 304 is provided with a plurality of grooves, preferably four groups, which are uniformly distributed in a circle. The feeding wheel 304 is provided with a material blocking plate 305 around it. The material releasing driving assembly 306 moves the material separation plate 307, so that the blank enters the groove of the feeding wheel 304. The feeding wheel 304 rotates by a certain angle to make the blank enter the blank slide 302 through the feeding port 311 on the bottom plate, the blank slide 302 is inclined, and the blank enters the groove on the insert block of the lower die plate 213 of the extrusion module 2 along the blank slide 302, realizing automatic feeding and further improving the processing efficiency.

[0064] The feeding module 3 further comprises a detection module 309, such as Figure 9 The detection module 309 is used for detecting whether the blank is qualified or not, such as Figure 6 The main body of the detection module 309 is arranged on both sides of the feeding wheel 304 and can be connected with the hopper or the material blocking plate 305, so as to detect the blank in the groove on the top of the feeding wheel 304. The detection module 309 is electrically connected with the rotary drive of the feeding wheel 304. When the blank is unqualified, the feeding wheel 304 reverses to transport the blank to the discharging area.

[0065] The detection module 309 comprises a length detection module and a diameter detection module. The length detection module can adopt a sensor module 313 such as a photoelectric sensor or an image sensor to detect the positions of both ends of the blank, thereby realizing the detection of the length of the blank. The diameter detection module can adopt an image sensor or a photoelectric sensor. When the image sensor is adopted, the end face image of the blank is acquired to determine the diameter. When the photoelectric sensor is adopted, the photoelectric sensor is arranged at the bottom of the groove, the groove is a V-shaped groove, and the diameter of the blank is determined by detecting the height of the blank.

[0066] The arrangement of the detection module 309 realizes the detection of the blank during the feeding stage and eliminates the unqualified blank before processing.

[0067] The detection module 309 further comprises an adjusting assembly 312 for adjusting the position of the blank in the groove of the feeding wheel 304.

[0068] The adjusting assembly can adopt a cylinder, a hydraulic cylinder or a lead screw linear module. Since the axial position of the blank entering the chute is not fixed, when the blank enters the extrusion module 2 from the blank slide 302, in order to avoid the collision between the blank 6 and the header die 207 and the positioning assembly, resulting in the failure to reach the position, the distance between the header die 207 and the positioning assembly needs to be adjusted to be larger than the length of the blank, which leads to a long movement stroke of the header die 207 in the subsequent processing process, which is not conducive to the further improvement of the production rhythm. The adjusting assembly is used to push the blank to adjust the axial position (different lengths of blanks correspond to different positions), so that the position range of the blank when entering the extrusion module 2 from the blank slide 302 is roughly consistent or consistent, so that the header die 207 does not need to retreat a large distance, which is conducive to the further improvement of the production rhythm.

[0069] Workflow:

[0070] 1. First, install the header die and the insert block of the product type to be manufactured;

[0071] 2. Take the pipe or bar blank and pour it into the hopper;

[0072] 3. Start the feeding module 3, which is an intermittent feeding mechanism, and wait for the processed blank to flow into the extrusion module 2;

[0073] 4. The photoelectric sensor receives the product positioning signal and starts the 8-ton hydraulic cylinder to press down the upper die and press the processed product;

[0074] 5. After pressing the processed product, start the 40-ton hydraulic cylinder to press the header die into the processed product, so that the head and flange of the hook are pressed to the size required by the drawing;

[0075] 6. After the product is processed, first retreat the 40-ton oil cylinder to the starting position, and then retreat the 8-ton oil cylinder to the starting position. At this time, the processed product can be taken out manually or by a mechanical hand;

[0076] 7. The PLC control system monitors the pressure curve in real time, displays the working condition parameters and state feedback on the touch screen, and realizes accurate control.

[0077] Example 2:

[0078] On the basis of example 1, a discharging mechanical hand is further arranged in this example, which automatically discharges the product after processing.

[0079] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A one-time extrusion molding equipment for a head and flange, characterized in that: The extrusion module (2) includes an upper die, a lower die, an upsetting die (207), a drive assembly, and a positioning assembly. The upper die includes an upper template (209), and the lower die includes a lower template (213). Both the upper and lower dies include a positioning insert, a head insert, and a forming insert that are detachably mounted on the upper template (209) and the lower template (213), respectively. The forming insert and the positioning insert have a flange forming area, and the head insert and the forming insert have a head forming area. The drive assembly includes an upsetting drive and a die drive. The upsetting drive is used to drive the upsetting die. The head mold (207) is detachable and installable. The mold drive is used to drive the upper mold and the lower mold to close the mold. The positioning component is set opposite to the head mold (207) and is used to contact the end of the blank. The positioning component is movable and is used to adapt to blanks of different lengths. After the upper mold and the lower mold are closed, the blank is clamped. The head mold (207) squeezes one end of the blank, and the other end of the blank contacts the positioning component. Under the action of the head mold (207) and the head forming area, the head of the blank is formed. Under the action of the flange forming area, the upper flange of the blank is formed.

2. The head and flange one-time extrusion molding equipment according to claim 1, characterized in that: The head and flange one-time extrusion molding equipment also includes a feeding module (3), which is used to automatically feed the blank to the extrusion module (2). The feeding module (3) includes a hopper (301) for accommodating the blank, a paddle (308) for controlling the size of the bottom opening of the hopper (301), a partition plate (307) for receiving the blank, a feeding wheel (304), and a blank slide (302). The paddle (308) is connected to the paddle drive assembly (303), and the partition plate (307) is connected to the paddle drive assembly (303). The feeding wheel (304) is connected to the feeding drive assembly (306), and the feeding wheel (304) is connected to the rotary drive. The feeding wheel (304) is provided with a material groove. The paddle (308) releases a blank onto the partition plate (307). The feeding drive assembly (306) moves the partition plate (307) to make the blank enter the material groove of the feeding wheel (304). The feeding wheel (304) rotates a certain angle to make the blank enter the blank slide (302). The blank enters the extrusion module (2) along the blank slide (302).

3. The head and flange one-time extrusion molding equipment according to claim 2, characterized in that: The feeding module (3) also includes a detection module (309), which is used to detect whether the blank is qualified. The detection module (309) is electrically connected to the rotation drive of the feeding wheel (304). When the blank is unqualified, the feeding wheel (304) reverses and transports the blank to the unloading area.

4. The head and flange one-time extrusion molding equipment according to claim 3, characterized in that: The detection module (309) includes a length detection module and a diameter detection module.

5. The head and flange one-time extrusion molding equipment according to claim 3 or 4, characterized in that: The detection module (309) also includes an adjustment component for adjusting the position of the blank in the feed wheel (304) trough.

6. The head and flange one-time extrusion forming equipment according to any one of claims 1-4, characterized in that: The extrusion module (2) also includes a slide plate (215), a slide rail (216), a nut (218), and a push rod bolt (219). The slide plate (215) is mounted on the slide rail (216), the upsetting head drive is connected to the slide plate (215), the push rod bolt (219) is mounted on the slide plate (215), and the nut (218) can be connected to the push rod bolt (219) to install and fix the upsetting head mold (207).

7. The head and flange one-time extrusion forming equipment according to any one of claims 1-4, characterized in that: The positioning insert and the head insert are connected to the upper template (209) and the lower template (213) by connectors. The forming insert is located between the positioning insert and the head insert, and its two ends abut against the positioning insert and the head insert, which can be quickly disassembled and replaced.

8. The head and flange one-time extrusion molding equipment according to claim 7, characterized in that: Both the upper template (209) and the lower template (213) are provided with slots for installing positioning inserts and forming inserts.

9. The head and flange one-time extrusion forming equipment according to any one of claims 1-4, characterized in that: The positioning component includes an adjusting screw (204), which is rotated to adapt to blanks of different lengths.

10. The head and flange one-time extrusion molding equipment according to claim 1, characterized in that: The head and flange one-time extrusion molding equipment also includes a grating safety device (4).

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