Core-pulling device for edge rolling in mold

Abstract

The invention discloses an in-mold edge rolling core-pulling device and belongs to the technical field of molds. A base is included; the core rod driving block resetting mechanism is arranged on the upward side of the left end of the base; a mandrel driving block, a driving block reset guide rod sliding seat and a driving block sliding guide rod fixing seat; a core rod driving block rightward movement acting mechanism; a core rod guide sliding block is fixed at the right end of the core rod, and the right end of the core rod sequentially penetrates through the core rod up-and-down movement guide hole and the upper parts of the pair of core rod movement guide blocks and forms a sliding pair sliding left and right with the upper parts of the pair of core rod movement guide blocks; the lower parts of the core rod moving guide blocks are matched with the moving guide block up-down floating compensation device; and the roller pressure releasing frame is connected with the inner edge rolling punch forming machine through a linkage piece and forms linkage with the inner edge rolling punch forming machine. The device has the advantages that work is achieved by means of power of the inner edge rolling punch forming machine; the requirement for edge rolling and core pulling of one end of a lengthy workpiece can be met; the dynamic compensation springback is met; and the rolling precision is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of molds, and in particular relates to a mold inner rolling core pulling device. Background Art

[0002] The in-mold rolling and core-pulling device can be applied to manufacturing scenarios such as automotive parts, electronic devices, and military products. For automotive parts, typical ones include wrenches (also called "operating wrenches") in the structural system of car seat slides, seat belt retractor mandrels, exhaust system clamps, brake oil pipe fixing rings, etc.; for electronic devices, typical ones include the rolling and forming of TYPE-C interface metal shells; for military products, typical ones include core-pulling and demolding of spacecraft pipeline connectors and shell closing processes.

[0003] As for the wrench in the structural system of the aforementioned automobile seat slide rail, please refer to the "Automobile Seat Slide Rail Unlocking Mechanism" recommended by CN106864313A. In this patent, the right end of the wrench is riveted to the left end of the unlocking handle. Specifically, a pair of pin holes are provided at the right end of the wrench, and a connecting piece is extended at the left end of the unlocking handle. A pair of connecting holes are provided on the connecting piece, and the unlocking handle and the wrench are riveted at positions corresponding to the connecting holes and the pin holes by rivets. Since the wrench and the unlocking handle (the main body is a tubular body) are not in a plug-in connection relationship of mutually tubular bodies, the two are not only complex in structure, but also have many processing processes and relatively low processing efficiency. In particular, the connection reliability, concentricity, axial clearance, etc. between the two are difficult to meet the desired requirements. Therefore, if the right end of the wrench of the patent is connected (i.e., mated) with the left end of the unlocking handle, then the above-mentioned deficiencies can be compensated by simply rolling the right end of the wrench, discarding the aforementioned connecting piece at the left end of the unlocking handle, and directly mating the rolled circle with the left end of the unlocking handle. In addition, the two can also exhibit excellent concentricity, reasonable axial clearance, etc.

[0004] The applicant needs to explain that: the rounding of the end of the wrench toward the unlocking handle is only an example and does not mean any special limitation on the manufacturing scenario.

[0005] According to professional common sense, core pulling (also called "core rod") can play a role in precise control, auxiliary demoulding, and wrinkle and crack prevention during the curling and stamping process. More specifically, the core pulling supports the inner wall of the tube during the stamping process with the help of the die (upper die and lower die facing each other) by a stamping device such as a punch press to prevent the material from shrinking or expanding and ensure the stability of the inner diameter. In addition, after the circle is formed, the workpiece and the die, especially the upper die, are often tightly attached due to elastic deformation, making it difficult to demould. Therefore, the core pulling device allows the core rod to withdraw from the stamped circle to assist demoulding and avoid deformation caused by strong pulling.

[0006] Since the core-pulling device is a special feature for a certain workpiece or product and belongs to the category of non-standard equipment, it is not universal and can only be designed and manufactured by the manufacturer of a certain product. In addition, in the process of self-design, it is also necessary to fully consider factors such as no interference during workpiece processing, simple structure, easy operation, and low manufacturing cost. This can also be confirmed by Chinese patents CN105251967A (core-pulling mechanism for die-casting machine) and CN221089831U (a core-pulling structure with extrusion function). Summary of the invention

[0007] The task of the present invention is to provide a mold internal curling core pulling device which is helpful to be set up with an internal curling stamping machine and work with the help of the power of the internal curling stamping machine, thereby abandoning self-equipped control devices such as complex cylinders or oil cylinders, which is beneficial to increase the reciprocating motion stroke of the core pulling to meet the requirements of curling the core pulling at one end of a long workpiece, and is convenient for the core rod to achieve free up and down displacement to meet the dynamic compensation rebound and ensure the curling accuracy, and is beneficial to embodying the simplicity of the structure to reduce manufacturing costs and is easy to operate.

[0008] The task of the present invention is accomplished in this way: a mold inner curling core pulling device includes a base, which is arranged on a bracket supported on the ground in the use state along with one side of the inner curling stamping forming machine; a core rod driving block reset mechanism, which is arranged on the left side of the base facing upward; a core rod driving block, a driving block reset guide rod sliding seat and a driving block sliding guide rod fixing seat, the core rod driving block is located between the driving block reset guide rod sliding seat and the driving block sliding guide rod fixing seat, and the core rod driving block and a pair of core rod driving block sliding guide rods parallel to each other front and back constitute a left and right sliding The sliding pair, the left end of the pair of mandrel driving block sliding guide rods is fixed to the driving block reset guide rod sliding seat, and the right end is fixed to the driving block sliding guide rod fixing seat, and a mandrel guide slider upper and lower sliding guide groove extending from the upper part to the lower part of the mandrel driving block is formed on the right side of the mandrel driving block and at a position corresponding to the position between the pair of mandrel driving block sliding guide rods. The driving block reset guide rod sliding seat and the driving block sliding guide rod fixing seat are fixed to the base at positions corresponding to the left and right sides of the mandrel driving block respectively, and a driving block sliding guide rod fixing seat is provided at a position corresponding to the upper and lower sliding guide groove of the mandrel guide slider. A guide hole for the up-and-down movement of the mandrel is passed from the left side of the driving block sliding guide rod fixing seat to the right side, and the mandrel driving block reset mechanism is fixedly connected to the mandrel driving block via the driving block reset guide rod sliding seat; a mandrel driving block right movement action mechanism, which is arranged on the base at a position located on the left side of the driving block reset guide rod sliding seat and is simultaneously connected to the front lower part and the rear lower part of the mandrel driving block; a mandrel and a pair of mandrel moving guide blocks, a mandrel guide slider is fixed at the right end of the mandrel, and the mandrel guide slider and the mandrel guide slider upward and downward sliding guide groove form A sliding pair, the right end of the core rod passes through the core rod up and down moving guide hole and the upper part of a pair of core rod moving guide blocks in sequence and forms a sliding pair that slides left and right with the upper part of a pair of core rod moving guide blocks, and the lower part of the pair of core rod moving guide blocks cooperates with the moving guide block up and down floating compensation device arranged on the working platform of the inner curling stamping machine when in use; a roller pressure release frame, the roller pressure release frame is connected to the inner curling stamping machine through a linkage part when in use and forms a linkage with the inner curling stamping machine, and the roller pressure release frame applies pressure or releases pressure on the right movement action mechanism of the core rod driving block.

[0009] In a specific embodiment of the present invention, a swing arm articulated seat fixing cavity is provided on the base and at a position corresponding to the right-moving action mechanism of the core rod driving block, a driving block reset guide rod sliding seat fixing cavity is provided at a position corresponding to the driving block reset guide rod sliding seat, and a driving block sliding guide rod fixing seat fixing cavity is provided at a position corresponding to the driving block sliding guide rod fixing seat. The core rod driving block right-moving action mechanism is arranged on the base at a position corresponding to the swing arm articulated seat fixing cavity and is fixed to the base by a swing arm articulated seat fixing screw screwed from the bottom of the base into the swing arm articulated seat fixing cavity, the lower part of the driving block reset guide rod sliding seat is inserted into the driving block reset guide rod sliding seat fixing cavity and is fixed to the base by a driving block reset guide rod sliding seat fixing screw screwed from the bottom of the base into the driving block reset guide rod sliding seat fixing cavity, the lower part of the driving block sliding guide rod fixing seat is inserted into the driving block sliding guide rod fixing seat fixing cavity and is fixed to the base by a driving block sliding guide rod fixing seat fixing screw screwed from the bottom of the base into the driving block sliding guide rod fixing seat fixing cavity.

[0010] In another specific embodiment of the present invention, a guide rod support plate fixing cavity is provided at the left end of the base in a state parallel to the short side direction of the base, a front wall panel fixing cavity is provided at a position corresponding to the right of the front end of the guide rod support plate fixing cavity and parallel to the long side direction of the base, and a rear wall panel fixing cavity is provided at a position corresponding to the right of the rear end of the guide rod support plate fixing cavity and also parallel to the long side direction of the base, and the front and rear wall panel fixing cavities are parallel to each other front and back; the core rod driving block reset mechanism is arranged on the upper side of the left end of the base at positions corresponding to the guide rod support plate fixing cavity, the front wall panel fixing cavity and the rear wall panel fixing cavity.

[0011] In another specific embodiment of the present invention, a pair of mandrel driving block reset guide rod sliding sleeve holes parallel to each other are provided on the driving block reset guide rod sliding seat and located at the upper part of the driving block reset guide rod sliding seat, a mandrel driving block reset guide rod sliding sleeve is provided in the mandrel driving block reset guide rod sliding sleeve hole, and a pair of mandrel driving block reset guide rod fixing holes are provided on the mandrel driving block and at positions corresponding to the mandrel driving block reset guide rod sliding sleeve holes; the mandrel driving block reset mechanism includes a guide rod support plate, a front wall plate, A rear wall plate, a pair of core rod drive block reset guide rods and a pair of guide rod reset springs, the lower part of the guide rod support plate is inserted into the guide rod support plate fixing cavity and is fixed to the base by a guide rod support plate fixing screw that is screwed into the guide rod support plate fixing cavity from the bottom of the base, a pair of guide rod sliding sleeve holes are opened in the upper part of the guide rod support plate in a front-to-back corresponding state, a pair of guide rod sliding sleeves are arranged in the pair of guide rod sliding sleeve holes, the front wall plate and the rear wall plate correspond to each other front-to-back and the lower parts are respectively inserted into the front and rear wall plate fixing cavities and are respectively screwed into the guide rod support plate fixing cavity from the bottom of the base The front and rear wall plate fixing screws in the front and rear wall plate fixing cavities are fixed, and a pair of core rod drive block reset guide rods are translated forward and backward with each other, and the left ends of the pair of core rod drive block reset guide rods are slidably matched with the pair of guide rod sliding sleeves, and the right ends of the pair of core rod drive block reset guide rods are fixed to the core rod drive block at the position corresponding to the pair of core rod drive block reset guide rod fixing holes after passing through the core rod drive block reset guide rod sliding sleeves, wherein, at the left ends of the pair of core rod drive block reset guide rods and at the position on the right side of the guide rod support plate, there are respectively formed A guide rod reset spring supports a step ring, a pair of guide rod reset springs are respectively sleeved on a pair of core rod drive block reset guide rods, and the left ends of the pair of guide rod reset springs are respectively supported on the right side surface of the guide rod reset spring supporting step ring, and the right ends of a pair of guide rod reset springs are supported on the left side surface of the drive block reset guide rod sliding seat, the front end left side surface of the roller pressure release frame is in contact with the front wall panel abutment surface at the upper right side of the front wall panel, and the rear end left side surface of the roller pressure release frame is in contact with the rear wall panel abutment surface at the upper right side of the rear wall panel.

[0012] In another specific embodiment of the present invention, a pair of mandrel driving block sliding guide rod guide sleeves are provided on the mandrel driving block and at positions corresponding to the pair of mandrel driving block sliding guide rods, and a pair of mandrel driving block sliding guide rods are slidably matched with the pair of mandrel driving block sliding guide rod guide sleeves.

[0013] In another specific embodiment of the present invention, an articulated pad matching cavity is formed at the lower part of the front end face and the rear end face of the core rod driving block, and an articulated pad hinge pin screw hole is provided in the articulated pad matching cavity; the core rod driving block right movement action mechanism comprises a swing arm articulated seat, a front left swing arm, a rear left swing arm, a front right swing arm, a rear right swing arm, a front articulated pad, a rear articulated pad, a swing arm shaft, a front roller and a rear roller, the swing arm articulated seat is inserted into the swing arm articulated seat fixing cavity and is fixed to the base by a swing arm articulated seat fixing screw screwed from the bottom of the base into the swing arm articulated seat fixing cavity, and an upwardly folded left swing arm is formed at the front and rear ends of the swing arm articulated seat. The hinge ear has a left swing arm hinge ear pin hole, the front left swing arm is located behind the front right swing arm and the upper ends of the front left swing arm and the front right swing arm are coaxially hinged at the front end of the swing arm shaft, the lower end of the front left swing arm is hinged to the left swing arm hinge ear formed at the front end of the swing arm hinge seat through the front left swing arm pin at a position corresponding to the left swing arm hinge ear pin hole, the lower end of the front right swing arm is hinged to the front wall of the front hinge pad through the front right swing arm pin at a position corresponding to the front right swing arm pin hole opened on the front wall of the front hinge pad, and the front right swing arm pin is also screwed into the hinge pin screw hole of the hinge pad, the rear left swing arm is located in front of the rear right swing arm and the upper ends of the rear left swing arm and the rear right swing arm are coaxially hinged at the front end of the swing arm shaft, The end is coaxially hinged at the rear end of the swing arm shaft, and the lower end of the rear left swing arm is hinged to the left swing arm hinge ear formed at the rear end of the swing arm hinge seat through the rear left swing arm pin shaft at the position of the left swing arm hinge ear pin shaft hole corresponding to the rear end of the swing arm hinge seat, and the lower end of the rear right swing arm is hinged to the rear wall body of the rear hinge pad block through the rear right swing arm pin shaft at the position corresponding to the rear right swing arm pin shaft hole opened on the rear wall body of the rear hinge pad block, and the rear right swing arm pin shaft is also screwed into the hinge pin shaft screw hole of the hinge pad block, and the front hinge pad block is matched with the hinge pad matching cavity corresponding to the lower part of the front end face of the core rod driving block through the front hinge pad block cavity formed at the rear side of the middle thereof, and the left and right cavity walls of the front hinge pad block cavity of the front hinge pad block are connected to the core rod driving block. The left and right side surfaces of the rod driving block are in contact with each other, and the rear articulated pad block is matched with the articulated pad matching cavity corresponding to the lower part of the rear end face of the core rod driving block through the rear articulated pad block cavity formed on the front side of the middle part thereof, and the left and right cavity walls of the rear articulated pad block cavity of the rear articulated pad block are in contact with the left and right side surfaces of the core rod driving block, the front roller is arranged at the front end part of the swing arm shaft at a position located in front of the upper end of the front right swing arm, and the rear roller is arranged at the rear end part of the swing arm shaft at a position located in the rear side of the upper end of the rear right swing arm, and a shaft sleeve is arranged in the middle part of the swing arm shaft and between the opposite sides of the upper ends of the front left swing arm and the rear left swing arm; the front lower part of the roller pressure release frame corresponds to the front roller, and the rear lower part corresponds to the rear roller.

[0014] In a further specific embodiment of the present invention, a front longitudinal arm is formed at the front end of the roller pressure release frame, and the lower end of the front longitudinal arm corresponds to the front roller. A rear longitudinal arm is formed at the rear end of the roller pressure release frame, and the lower end of the rear longitudinal arm corresponds to the rear roller.

[0015] In a further specific embodiment of the present invention, a front longitudinal arm inclined surface is formed on the lower end surface of the front longitudinal arm, and a rear longitudinal arm inclined surface is formed on the lower end surface of the rear longitudinal arm, the front longitudinal arm inclined surface corresponds to and cooperates with the front roller, the rear longitudinal arm inclined surface corresponds to and cooperates with the rear roller, and the front and rear longitudinal arm inclined surfaces are inclined downward from right to left.

[0016] In yet another specific embodiment of the present invention, the front left swing arm and the front right swing arm form a herringbone relationship with each other; the rear left swing arm and the rear right swing arm form a herringbone relationship with each other.

[0017] In yet another specific embodiment of the present invention, the moving guide block up and down floating compensation device includes a mandrel moving guide block floating seat, a mandrel moving guide block first supporting spring and a mandrel moving guide block second supporting spring. The mandrel moving guide block floating seat is arranged on the working platform of the inner curling stamping forming machine, and a first supporting spring cavity and a second supporting spring cavity are separated on the mandrel moving guide block floating seat. The first supporting spring of the mandrel moving guide block is arranged in the first supporting spring cavity, and the second supporting spring of the mandrel moving guide block is arranged in the second supporting spring cavity. The mandrel moving guide block located on the left of the pair of mandrel moving guide blocks is arranged in the first supporting spring cavity for floating up and down and its bottom contacts the upper end of the first supporting spring of the mandrel moving guide block, and the mandrel moving guide block located on the right of the pair of mandrel moving guide blocks is arranged in the second supporting spring cavity for floating up and down and its bottom contacts the upper end of the second supporting spring of the mandrel moving guide block.

[0018] The technical effect of the technical solution provided by the present invention is that: since the base together with the components arranged with the base as a carrier are arranged on a bracket supported on the ground along with one side of the inner curling stamping and forming machine, and since the roller pressure release frame is connected to the inner curling stamping and forming machine through a linkage when in use and forms a linkage with it, it can work with the help of the power of the inner curling stamping and forming machine, and there is no need to additionally set up a control device such as a complex air cylinder or oil cylinder for making the roller pressure release frame work; since the left end of the mandrel is connected to the mandrel driving block through the mandrel guide slider, and since the mandrel driving block can be reset to the left by the mandrel driving block reset mechanism, the roller pressure release frame is reset to the left by the roller pressure release frame. The pressure release frame moves the mandrel driving block to the right together with the mandrel through the mandrel driving block right movement mechanism, so that the left and right reciprocating motion stroke of the mandrel is large, which can meet the requirements of rolling and core pulling at one end of the long workpiece; since a pair of mandrel moving guide blocks are provided at the right end of the mandrel, and since the pair of mandrel moving guide blocks are arranged in an up and down floating manner on the moving guide block up and down floating compensation device arranged with the working platform of the rolling stamping machine as the carrier, it is convenient for the mandrel to realize four-degree-of-freedom displacement of left and right displacement and up and down free displacement, which meets the dynamic compensation rebound and ensures the rolling accuracy; since the overall structure is relatively simple, the manufacturing cost can be reduced and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram showing a mandrel driving block sliding between a driving block reset guide rod sliding seat and a driving block sliding guide rod fixing seat via a pair of mandrel driving block sliding guide rods; Figure 3 It is a schematic diagram of an application example of the present invention; Figure 4 It is a schematic diagram of an inner curling stamping machine curling one end of a workpiece through a die. DETAILED DESCRIPTION

[0020] In order to more clearly understand the technical essence and beneficial effects of the present invention, it will be described in detail in the form of embodiments below. However, the description of the embodiments is not a limitation of the present invention. Any equivalent changes made based on the concept of the present invention that are merely formal and not substantial should be regarded as within the scope of the technical solution of the present invention.

[0021] In the following description, all concepts related to up, down, left, right, front and back directions or orientations are based on the current Figure 1 The position state is taken as a reference, and thus it cannot be understood as a special limitation on the technical solution provided by the present invention.

[0022] See also Figure 1, showing a base 1, which is arranged on a bracket supported on the floor with one side of the inner curling stamping machine, such as the left side, when in use. Figure 1 As shown, the base 1 is a rectangular plate and the material is preferably a metal plate; a core rod driving block reset mechanism 2 is shown, and the core rod driving block reset mechanism 2 is arranged on the left end of the aforementioned base 1 facing upward; a core rod driving block 3, a driving block reset guide rod sliding seat 4 and a driving block sliding guide rod fixing seat 5 are shown, the core rod driving block 3 is located between the driving block reset guide rod sliding seat 4 and the driving block sliding guide rod fixing seat 5, and the core rod driving block 3 and a pair of core rod driving block sliding guide rods 31 parallel to each other front and back form a sliding pair that slides left and right. The left end of the mandrel driving block sliding guide rod 31 is fixed to the aforementioned driving block reset guide rod sliding seat 4, and the right end is fixed to the driving block sliding guide rod fixing seat 5. On the right side of the mandrel driving block 3 and at a position corresponding to a pair of mandrel driving block sliding guide rods 31, a mandrel guide slider upper and lower sliding guide groove 32 extending from the upper part to the lower part of the mandrel driving block 3 is formed. The driving block reset guide rod sliding seat 4 and the driving block sliding guide rod fixing seat 5 are fixed to the aforementioned base 1 at positions corresponding to the left and right sides of the mandrel driving block 3 respectively. A mandrel rod up and down movement guide hole 51 is provided at a position corresponding to the up and down sliding guide groove 32 of the mandrel guide slider, which passes from the left side of the driving block sliding guide rod fixing seat 5 to the right side. The mandrel rod driving block reset mechanism 2 is fixedly connected to the mandrel rod driving block 3 in a sliding state through the driving block reset guide rod sliding seat 4; a mandrel rod driving block right movement action mechanism 6 is shown, and the mandrel rod driving block right movement action mechanism 6 is arranged on the aforementioned base 1 at a position located on the left side of the aforementioned driving block reset guide rod sliding seat 4 and is simultaneously connected to the front side lower part of the aforementioned mandrel driving block 3. The mandrel 7 and the pair of mandrel moving guide blocks 8 are connected at the top and the rear bottom; a mandrel 7 and a pair of mandrel moving guide blocks 8 are shown, a mandrel guide slider 71 is fixed at the right end of the mandrel 7, the mandrel guide slider 71 and the mandrel guide slider up and down sliding guide groove 32 constitute a sliding pair for sliding up and down, the right end of the mandrel 7 passes through the mandrel up and down moving guide hole 51 and the upper part of the pair of mandrel moving guide blocks 8 in sequence and forms a sliding pair for sliding left and right with the upper part of the pair of mandrel moving guide blocks 8, and the lower part of the pair of mandrel moving guide blocks 8 is connected to the working platform 10 ( Figure 3 ) is coordinated with the movable guide block up and down floating compensation device 101 on the upper side; a roller pressure release frame 9 is shown, which is connected to the aforementioned inner curling stamping machine through a linkage 40 when in use and forms a linkage with the inner curling stamping machine, and the roller pressure release frame 9 applies pressure or releases pressure on the aforementioned core rod driving block right movement action mechanism 6.

[0023] Depend on Figure 2As shown, a pair of mandrel driving block sliding guide rod right fixing holes 52 are provided on the driving block sliding guide rod fixing seat 5, and a pair of mandrel driving block sliding guide rod left fixing holes 43 are provided on the driving block reset guide rod sliding seat 4, the left ends of the pair of mandrel driving block sliding guide rods 31 are fixed to the driving block reset guide rod sliding seat 4 at positions corresponding to the pair of mandrel driving block sliding guide rod left fixing holes 43, and the right ends are fixed to the driving block sliding guide rod fixing seat 5 at positions corresponding to the pair of mandrel driving block sliding guide rod right fixing holes 52.

[0024] exist Figure 1 The base fixing screw 15 used to fix the base 1 to a bracket or a similar carrier supported on the floor is shown in the figure. The aforementioned linkage member 40 can be a punch crank, a connecting rod or a lever arm, etc., as long as it can meet the requirement of borrowing power from the inner coil stamping machine. The screw 93 shown on the roller pressure release frame 9 is used to be fixedly connected with the aforementioned linkage member 40, that is, the linkage member 40 is located between the up and down moving parts of the inner coil stamping machine and the roller pressure release frame 9, so that when the inner coil stamping machine performs up and down stamping actions, the linkage member 40 drives the roller pressure release frame 9 to move accordingly.

[0025] See you next time Figure 1 A swing arm hinge seat fixing cavity 11 is provided on the aforementioned base 1 and at a position corresponding to the aforementioned mandrel driving block rightward movement mechanism 6, a driving block reset guide rod sliding seat fixing cavity 12 is provided at a position corresponding to the aforementioned driving block reset guide rod sliding seat 4, and a driving block sliding guide rod fixing seat fixing cavity 13 is provided at a position corresponding to the driving block sliding guide rod fixing seat 5, the aforementioned mandrel driving block rightward movement mechanism 6 is arranged on the base 1 at a position corresponding to the aforementioned swing arm hinge seat fixing cavity 11 and is screwed into the swing arm hinge seat fixing cavity 11 from the bottom of the base 1 The swing arm hinge seat fixing screw inside is fixed to the base 1, the lower part of the aforementioned drive block reset guide rod sliding seat 4 is inserted into the drive block reset guide rod sliding seat fixing cavity 12 and is fixed to the base 1 by the drive block reset guide rod sliding seat fixing screw that is screwed into the drive block reset guide rod sliding seat fixing cavity 12 from the bottom of the base 1, and the lower part of the aforementioned drive block sliding guide rod fixing seat 5 is inserted into the drive block sliding guide rod fixing seat fixing cavity 13 and is fixed to the base 1 by the drive block sliding guide rod fixing seat fixing screw that is screwed into the drive block sliding guide rod fixing seat fixing cavity 13 from the bottom of the base 1.

[0026] A guide rod support plate fixing cavity 14a is provided at the left end of the aforementioned base 1 in a state parallel to the short side direction of the base 1, a front wall plate fixing cavity 14b is provided in parallel with the long side direction of the base 1 at a position corresponding to the right of the front end of the guide rod support plate fixing cavity 14a, and a rear wall plate fixing cavity 14c is provided in parallel with the long side direction of the base 1 at a position corresponding to the right of the rear end of the guide rod support plate fixing cavity 14a, and the front and rear wall plate fixing cavities 14b and 14c are parallel to each other front and back; the aforementioned core rod driving block reset mechanism 2 is arranged on the upper side of the left end of the aforementioned base 1 at positions corresponding to the aforementioned guide rod support plate fixing cavity 14a, the front wall plate fixing cavity 14b and the rear wall plate fixing cavity 14c.

[0027] The short side direction of the base 1 mentioned above refers to the distance from the front side to the rear side of the base 1, that is, the width of the base 1; the long side direction of the base 1 mentioned above refers to the distance from the left side to the right side of the base 1, that is, the length of the base 1.

[0028] See also Figure 2 And combined with Figure 1 A pair of mandrel driving block reset guide rod sliding sleeve holes 41 ( Figure 2), a mandrel driving block reset guide rod sliding sleeve 411 is arranged in the mandrel driving block reset guide rod sliding sleeve hole 41, and a pair of mandrel driving block reset guide rod fixing holes 33 are opened on the aforementioned mandrel driving block 3 and at positions corresponding to the mandrel driving block reset guide rod sliding sleeve hole 41; the aforementioned mandrel driving block reset mechanism 2 includes a guide rod support plate 21, a front wall plate 22, a rear wall plate 23, a pair of mandrel driving block reset guide rods 24 and a pair of guide rod reset springs 25, the lower part of the guide rod support plate 21 is inserted into the aforementioned guide rod support plate fixing cavity 14a and is self-locking. The bottom of the seat 1 is screwed into the guide rod support plate fixing screw in the guide rod support plate fixing cavity 14a and fixed to the base 1. A pair of guide rod sliding sleeve holes are opened on the upper part of the guide rod support plate 21 in a front-to-back corresponding state. A pair of guide rod sliding sleeves 211 are arranged in the pair of guide rod sliding sleeve holes. The front wall plate 22 and the rear wall plate 23 correspond to each other front and back and the lower parts are respectively inserted into the aforementioned front and rear wall plate fixing cavities 14b and 14c and are fixed by the front and rear wall plate fixing screws that are screwed into the front and rear wall plate fixing cavities 14b and 14c from the bottom of the base 1, respectively. A pair of mandrel driving blocks are repeated The positioning guide rods 24 translate back and forth with each other, and the left ends of the pair of mandrel drive block reset guide rods 24 are slidably matched with the aforementioned pair of guide rod sliding sleeves 211, and the right ends of the pair of mandrel drive block reset guide rods 24 are fixed to the aforementioned mandrel drive block 3 at the position corresponding to the aforementioned pair of mandrel drive block reset guide rod fixing holes 33 after passing through the aforementioned mandrel drive block reset guide rod sliding sleeves 411, wherein, at the left ends of the pair of mandrel drive block reset guide rods 24 and at the positions located on the right side of the aforementioned guide rod support plate 21, a guide rod reset spring supporting step ring 241 is respectively formed, and a pair of guide rods The rod return spring 25 is respectively sleeved on a pair of core rod driving block return guide rods 24, and the left ends of the pair of guide rod return springs 25 are respectively supported on the right side surface of the aforementioned guide rod return spring support step ring 241, and the right ends of a pair of guide rod return springs 25 are supported on the left side surface of the aforementioned driving block return guide rod sliding seat 4, the front end left side surface of the aforementioned roller pressure release frame 9 is in contact with the front wall panel abutment surface 221 at the upper right side of the front wall panel 22, and the rear end left side surface of the roller pressure release frame 9 is in contact with the rear wall panel abutment surface 231 at the upper right side of the rear wall panel 23.

[0029] Depend on Figure 2 As shown, as a preferred solution, a left-side insertion cavity 42 of an articulated pad is formed in the front and rear of the right side of the aforementioned drive block reset guide rod sliding seat 4. Due to the setting of the left-side insertion cavity 42 of the articulated pad, interference with the left side walls of the front and rear articulated pads 66 and 67 of the structural system of the core rod drive block right movement action mechanism 6 mentioned below can be avoided.

[0030] See you next time Figure 1 and Figure 2A pair of mandrel driving block sliding guide rod guide sleeves 34 are arranged on the aforementioned mandrel driving block 3 and at positions corresponding to the aforementioned pair of mandrel driving block sliding guide rods 31, and the pair of mandrel driving block sliding guide rods 31 are slidably matched with the pair of mandrel driving block sliding guide rod guide sleeves 34.

[0031] Depend on Figure 2 As shown, a hinged pad matching cavity 35 is formed at the lower part of the front end face and the rear end face of the aforementioned core rod driving block 3, and a hinged pad hinge pin shaft screw hole 351 is opened in the hinged pad matching cavity 35.

[0032] Still see Figure 1 And combined with Figure 2The aforementioned core rod driving block right-moving action mechanism 6 includes a swing arm articulated seat 61, a front left swing arm 62, a rear left swing arm 63, a front right swing arm 64, a rear right swing arm 65, a front articulated cushion block 66, a rear articulated cushion block 67, a swing arm shaft 68, a front roller 69a and a rear roller 69b. The swing arm articulated seat 61 is inserted into the aforementioned swing arm articulated seat fixing cavity 11 and is fixed to the base 1 by a swing arm articulated seat fixing screw screwed from the bottom of the aforementioned base 1 into the swing arm articulated seat fixing cavity 11. A left swing arm articulated ear 611 that is folded upward is respectively formed at the front and rear ends of the swing arm articulated seat 61. A left swing arm articulated ear pin shaft hole 6111 is provided on the left swing arm articulated ear 611. The front left swing arm 62 is located at the front right swing arm 64 and the upper ends of the front left swing arm 62 and the front right swing arm 64 are coaxially hinged at the front end of the swing arm shaft 68, the lower end of the front left swing arm 62 is hinged to the aforementioned left swing arm hinge ear 611 formed at the front end of the aforementioned swing arm hinge seat 61 through the front left swing arm pin shaft 621 at a position corresponding to the aforementioned left swing arm hinge ear pin shaft hole 6111, the lower end of the front right swing arm 64 is hinged to the front wall body of the aforementioned front hinge pad 66 through the front right swing arm pin shaft 641 at a position corresponding to the front right swing arm pin shaft hole 662 opened on the front wall body of the front hinge pad 66, and the front right swing arm pin shaft 641 is also screwed into the aforementioned hinge pad hinge pin shaft screw hole 351, the rear left swing arm 63 is located in front of the rear right swing arm 65 and the rear left swing arm 63 and the rear The upper end of the right swing arm 65 is coaxially hinged to the rear end of the swing arm shaft 68, and the lower end of the rear left swing arm 63 is hinged to the aforementioned left swing arm hinge ear 611 formed at the rear end of the aforementioned swing arm hinge seat 61 through the rear left swing arm pin shaft at a position corresponding to the left swing arm hinge ear pin shaft hole 6111 at the rear end of the aforementioned swing arm hinge seat 61, and the lower end of the rear right swing arm 65 is hinged to the rear wall of the aforementioned rear hinge pad 67 through the rear right swing arm pin shaft not shown in the figure at a position corresponding to the rear right swing arm pin shaft hole 672 opened on the rear wall of the rear hinge pad 67, and the rear right swing arm pin shaft is also screwed into the aforementioned hinge pad hinge pin shaft screw hole 351, and the front hinge pad 66 is connected to the mandrel driving block 3 through the front hinge pad cavity 661 formed on the rear side of the middle thereof. The aforementioned hinged pad matching cavity 35 at the lower part of the front end face is matched, and the left and right cavity walls of the front hinged pad cavity 661 of the front hinged pad 66 are in contact with the left and right side surfaces of the core rod driving block 3. The rear hinged pad 67 is matched with the aforementioned hinged pad matching cavity 35 at the lower part of the rear end face of the core rod driving block 3 through the rear hinged pad cavity 671 formed on the front side of the middle part, and the left and right cavity walls of the rear hinged pad cavity 671 of the rear hinged pad 67 are in contact with the left and right side surfaces of the core rod driving block 3. The front roller 69a is arranged at the front end of the aforementioned swing arm shaft 68 at a position located at the front side of the upper end of the aforementioned front right swing arm 64, and the rear roller 69b is arranged at the rear end of the aforementioned swing arm shaft 68 at a position located at the rear side of the upper end of the aforementioned rear right swing arm 65.A shaft sleeve 681 is sleeved in the middle of the swing arm shaft 68 and between the upper ends of the front left swing arm 62 and the rear left swing arm 63 facing each other; the front lower part of the roller pressure release frame 9 corresponds to the front roller 69a, and the rear lower part corresponds to the rear roller 69b.

[0033] Depend on Figure 1 As shown, a front longitudinal arm 91 is formed at the front end of the aforementioned roller pressure release frame 9, and the lower end of the front arm 91 corresponds to the aforementioned front roller 69a. A rear longitudinal arm 92 is formed at the rear end of the roller pressure release frame 9, and the lower end of the rear longitudinal arm 92 corresponds to the aforementioned rear roller 69b.

[0034] A front longitudinal arm inclined surface 911 is formed on the lower end surface of the aforementioned front longitudinal arm 91, and a rear longitudinal arm inclined surface 921 is formed on the lower end surface of the aforementioned rear longitudinal arm 92. The front longitudinal arm inclined surface 911 corresponds to and cooperates with the aforementioned front roller 69a, and the rear longitudinal arm inclined surface 921 corresponds to and cooperates with the aforementioned rear roller 69b. The aforementioned front and rear longitudinal arm inclined surfaces 911, 921 are inclined downward from right to left.

[0035] The front left swing arm 62 and the front right swing arm 64 form a herringbone relationship with each other; the rear left swing arm 63 and the rear right swing arm 65 form a herringbone relationship with each other.

[0036] In the process of driving or forcing the roller pressure release frame 9 downward by the aforementioned linkage 40 of the inner curling stamping machine, the front and rear longitudinal arm inclined surfaces 911 and 921 act on the front and rear rollers 69a and 69b respectively, and when the front and rear rollers 69a and 69b are subjected to downward force, the swing arm shaft 68 is forced to move downward, so that the lower parts of the front left and right swing arms 62 and 64 are repelled from each other, and the lower parts of the rear left and right swing arms 63 and 65 are repelled from each other, so that the mandrel driving block 3 moves rightward together with the mandrel 7. On the contrary, when the aforementioned roller pressure release frame 9 moves upward and the front and rear longitudinal arm inclined surfaces 911 and 921 thereof release the pressure on the front and rear rollers 69a and 69b, the pair of guide rod reset springs 25 of the aforementioned core rod drive block reset mechanism 2 cause the pair of core rod drive block reset guide rods 24 to move to the left together with the core rod drive block 3, and the core rod 7 driven by the core rod drive block 3 also moves to the left accordingly, that is, the core rod is withdrawn from the stamped circle to achieve core pulling.

[0037] See also Figure 3The aforementioned movable guide block up and down floating compensation device 101 comprises a mandrel movable guide block floating seat 1011, a mandrel movable guide block first supporting spring 1012 and a mandrel movable guide block second supporting spring 1013. The mandrel movable guide block floating seat 1011 is arranged on the working platform 10 of the aforementioned inner rolling stamping forming machine. A first supporting spring cavity 10111 and a second supporting spring cavity 10112 are arranged on the mandrel movable guide block floating seat 1011. The mandrel movable guide block first supporting spring 1012 is arranged in the first supporting spring cavity 1011 1, and the second supporting spring 1013 of the mandrel moving guide block is arranged in the second supporting spring cavity 10112, the mandrel moving guide block located on the left of the pair of mandrel moving guide blocks 8 is arranged in the first supporting spring cavity 10111 in an up-and-down floating manner, and its bottom contacts the upper end of the first supporting spring 1012 of the mandrel moving guide block, and the mandrel moving guide block located on the right of the pair of mandrel moving guide blocks 8 is arranged in the second supporting spring cavity 10112 in an up-and-down floating manner, and its bottom contacts the upper end of the second supporting spring 1013 of the mandrel moving guide block.

[0038] It can be seen from the above description that the pair of mandrel moving guide blocks 8 can float up and down by moving the guide block up and down floating compensation device 101, so that the mandrel 7 can achieve up and down freedom displacement by the pair of mandrel moving guide blocks 8.

[0039] In the inner curling stamping machine, the workpiece 30 ( Figure 4 During the inner curling stamping process (shown in FIG. 1 ), the mandrel 7 can play the role of precise control, auxiliary demoulding, wrinkle and crack prevention, etc. And due to the function of the above-mentioned movable guide block up and down floating compensation device 101, the pair of mandrel movable guide blocks 8 can ensure that the mandrel 7 will not deform and affect the quality of the circle 301 during the inner curling stamping forming machine. In other words, the mandrel 7 can achieve four-degree-of-freedom displacement of left and right displacement and up and down free displacement, meet the dynamic compensation rebound and ensure the curling accuracy.

[0040] See also Figure 4 ,exist Figure 4 2 shows a die 20 for being set on an inner curling stamping machine, the die 20 comprises an upper die 201 and a lower die 202, and a circle 301 is formed at one end of a workpiece 30 by the cooperation of an upper die cavity 2011 of the upper die 201 and a lower die cavity 2021 of the lower die 202. The workpiece 30 in this embodiment is exemplified as a car seat rail wrench, but is not limited thereto.

[0041] The applicant briefly describes the working process of the present invention. Taking the downward movement of the upper half mold 201 as an example, when the inner curling stamping machine is working, the roller pressure release frame 9 is driven downward by the aforementioned linkage 40. According to the applicant's description above, the front and rear longitudinal arm inclined surfaces 911 and 921 of the front and rear longitudinal arms 91 and 92 press the front and rear rollers 69a and 69b, and the front and rear rollers 69a and 69b act on the swing arm shaft 68, so that the front left and right swing arms 62 and 64 and the rear left and right swing arms 63 and 65 are both stressed, and the distance between the lower ends of the front left and right swing arms 62 and 64 and the distance between the lower ends of the rear left and right swing arms 63 and 65 are increased. Specifically, since the lower ends of the front and rear left swing arms 62 and 63 are respectively hinged to the left swing arm hinge ears 611, and the lower ends of the front and rear right swing arms 64 and 65 are respectively hinged to the front and rear hinge pads 66 and 67, and since the front and rear hinge pads 66 and 67 are connected to the mandrel driving block 3, for example, the front right swing arm pin 641 is connected to the hinge pad hinge pin screw hole 351, the mandrel driving block 3 is pushed to move rightward along the pair of mandrel driving block sliding guide rods 31, and the mandrel 7 is moved rightward by the mandrel driving block 3 through the mandrel guide slider 71 of the mandrel 7, so that the right end of the mandrel 71 is inserted into the part of the workpiece 30 to be formed with the circle 301. In the process of the mandrel driving block 3 moving rightward, the pair of mandrel driving block reset guide rods 24 fixed to the right ends are also driven to move rightward, and the pair of guide rod reset springs 25 are compressed to store energy. Under the operation of the inner curling stamping machine, the upper half mold 201 moves downward, that is, moves toward the static lower half mold 202 set on the working platform 10, until the upper and lower half molds 201, 202 are closed to form a circle 301 at the right end of the workpiece 30.

[0042] Under the reverse action of the inner curling stamping machine, the upper half mold 201 is displaced upward, that is, the mold is opened. At this time, the roller pressure release frame 9 is also relieved of the pressure on the front and rear rollers 69a and 69b due to the upward movement under the action of the linkage 40. At the same time, under the restoring force of a pair of guide rod reset springs 25, a pair of mandrel drive block reset guide rods 24 move to the left, driving the mandrel drive block 3 together with the mandrel 7 to move to the left, so that the mandrel 7 withdraws from the circle 301 and completes the core pulling. Then the check-in staff or the automated manipulator removes the workpiece 30 formed with the circle 301. Then, the check-in staff or the automated manipulator introduces the next workpiece 30 to be formed with the circle 301 into the lower half mold 202, and repeats the above process. Through the above description of the working process of the present invention, it can be proved that the mandrel 7 can meet the four-free displacement requirements of up, down, left and right displacement.

[0043] In summary, the technical solution provided by the present invention makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects stated by the applicant in the technical effect column above.

Claims

1. A core pulling device for rolling inside a mold, characterized in that: The invention comprises a base (1), which is arranged on a support supported on the ground at one side of the inner rolling stamping machine in a use state; a core rod driving block reset mechanism (2), which is arranged on the left side of the base (1) facing upward; a core rod driving block (3), a driving block reset guide rod sliding seat (4) and a driving block sliding guide rod fixing seat (5), wherein the core rod driving block (3) is located between the driving block reset guide rod sliding seat (4) and the driving block sliding guide rod fixing seat (5), and the core rod driving block (3) and a pair of core rod driving block sliding guide rods (31) parallel to each other in front and back form a sliding pair for sliding left and right, and the left ends of the pair of core rod driving block sliding guide rods (31) are connected to the core rod driving block. The driving block reset guide rod sliding seat (4) is fixed, and the right end is fixed to the driving block sliding guide rod fixing seat (5). On the right side of the mandrel driving block (3) and at a position corresponding to a pair of mandrel driving block sliding guide rods (31), a mandrel guide slider upper and lower sliding guide groove (32) extending from the upper part to the lower part of the mandrel driving block (3) is formed. The driving block reset guide rod sliding seat (4) and the driving block sliding guide rod fixing seat (5) are fixed to the base (1) at positions corresponding to the left and right sides of the mandrel driving block (3), respectively. On the driving block sliding guide rod fixing seat (5) and at a position corresponding to the mandrel guide slider upper and lower sliding guide groove (32), a left side of the self-driving block sliding guide rod fixing seat (5) is provided. A mandrel rod vertical movement guide hole (51) passes through to the right side, the mandrel rod driving block reset mechanism (2) is fixedly connected to the mandrel rod driving block (3) via the driving block reset guide rod sliding seat (4); a mandrel rod driving block rightward movement mechanism (6), the mandrel rod driving block rightward movement mechanism (6) is arranged on the base (1) at a position located on the left side of the driving block reset guide rod sliding seat (4) and is simultaneously connected to the front lower part and the rear lower part of the mandrel rod driving block (3); a mandrel (7) and a pair of mandrel rod moving guide blocks (8), a mandrel guide slider (71) is fixed at the right end of the mandrel (7), and the mandrel guide slider (71) and the mandrel guide slider vertical sliding guide groove (32) form a sliding pair The right end of the mandrel (7) passes through the mandrel up and down moving guide hole (51) and the upper part of a pair of mandrel moving guide blocks (8) in sequence and forms a sliding pair that slides left and right with the upper part of the pair of mandrel moving guide blocks (8), and the lower part of the pair of mandrel moving guide blocks (8) cooperates with the moving guide block up and down floating compensation device (101) arranged on the working platform (10) of the inner curling stamping machine in the use state; a roller pressure release frame (9), the roller pressure release frame (9) is connected to the inner curling stamping machine through a linkage (40) in the use state and forms a linkage with the inner curling stamping machine, and the roller pressure release frame (9) applies pressure or releases pressure on the right movement action mechanism (6) of the mandrel driving block.

2. The mold inner rolling core pulling device according to claim 1, characterized in that: A swing arm hinge seat fixing cavity (11) is provided on the base (1) at a position corresponding to the core rod drive block rightward movement mechanism (6), a drive block reset guide rod sliding seat fixing cavity (12) is provided at a position corresponding to the drive block reset guide rod sliding seat (4), and a drive block sliding guide rod fixing seat fixing cavity (13) is provided at a position corresponding to the drive block sliding guide rod fixing seat (5), the core rod drive block rightward movement mechanism (6) is arranged on the base (1) at a position corresponding to the swing arm hinge seat fixing cavity (11) and is screwed into the swing arm hinge seat fixing cavity (11) from the bottom of the base (1). ) is fixed to the base (1) by the swing arm hinge seat fixing screw in the base (1), the lower part of the driving block reset guide rod sliding seat (4) is inserted into the driving block reset guide rod sliding seat fixing cavity (12) and is fixed to the base (1) by the driving block reset guide rod sliding seat fixing screw screwed into the driving block reset guide rod sliding seat fixing cavity (12) from the bottom of the base (1), and the lower part of the driving block sliding guide rod fixing seat (5) is inserted into the driving block sliding guide rod fixing seat fixing cavity (13) and is fixed to the base (1) by the driving block sliding guide rod fixing seat fixing screw screwed into the driving block sliding guide rod fixing seat fixing cavity (13) from the bottom of the base (1).

3. The mold inner rolling core pulling device according to claim 1, characterized in that: A guide rod support plate fixing cavity (14a) is provided at the left end of the base (1) in a state parallel to the short side direction of the base (1); a front wall plate fixing cavity (14b) is provided at a position corresponding to the right of the front end of the guide rod support plate fixing cavity (14a) and is parallel to the long side direction of the base (1); and a rear wall plate fixing cavity (14c) is provided at a position corresponding to the right of the rear end of the guide rod support plate fixing cavity (14a) and is also parallel to the long side direction of the base (1); the front and rear wall plate fixing cavities (14b, 14c) are parallel to each other front and back; the core rod drive block reset mechanism (2) is arranged on the upper side of the left end of the base (1) at positions corresponding to the guide rod support plate fixing cavity (14a), the front wall plate fixing cavity (14b) and the rear wall plate fixing cavity (14c).

4. The mold inner rolling core pulling device according to claim 3, characterized in that: A pair of mandrel driving block reset guide rod sliding sleeve holes (41) are provided on the driving block reset guide rod sliding seat (4) and are located at the upper part of the driving block reset guide rod sliding seat (4), and a mandrel driving block reset guide rod sliding sleeve (411) is provided in the mandrel driving block reset guide rod sliding sleeve hole (41); a pair of mandrel driving block reset guide rod fixing holes (33) are provided on the mandrel driving block (3) and at positions corresponding to the mandrel driving block reset guide rod sliding sleeve holes (41); the mandrel driving block reset mechanism (2) comprises a guide rod support plate (21), a front wall plate (22), a rear wall plate (23), a pair of mandrel driving block reset guide rods (2 4) and a pair of guide rod return springs (25), the lower part of the guide rod support plate (21) is inserted into the guide rod support plate fixing cavity (14)a and is fixed to the base (1) by a guide rod support plate fixing screw screwed into the guide rod support plate fixing cavity (14a) from the bottom of the base (1), a pair of guide rod sliding sleeve holes are opened in the upper part of the guide rod support plate (21) in a state of front and rear corresponding, and a pair of guide rod sliding sleeves (211) are arranged in the pair of guide rod sliding sleeve holes, the front wall plate (22) and the rear wall plate (23) correspond to each other front and rear and the lower parts are respectively inserted into the front and rear wall plate fixing cavities (14b, 14c) and are screwed into the front and rear wall plate fixing cavities (14b, 14c) from the bottom of the base (1) The front and rear wall panels in the fixed cavity (14b, 14c) are fixed by fixing screws, and a pair of mandrel drive block reset guide rods (24) are translated forward and backward relative to each other, and the left ends of the pair of mandrel drive block reset guide rods (24) are slidably matched with the pair of guide rod sliding sleeves (211), and the right ends of the pair of mandrel drive block reset guide rods (24) are fixed to the mandrel drive block (3) at positions corresponding to the pair of mandrel drive block reset guide rod fixing holes (33) after passing through the mandrel drive block reset guide rod sliding sleeves (411), wherein a guide rod reset spring is respectively formed at the left ends of the pair of mandrel drive block reset guide rods (24) and at the positions located on the right side of the guide rod support plate (21). A spring supporting step ring (241), a pair of guide rod reset springs (25) are respectively sleeved on a pair of core rod driving block reset guide rods (24), and the left ends of the pair of guide rod reset springs (25) are respectively supported on the right side surface of the guide rod reset spring supporting step ring (241), and the right ends of the pair of guide rod reset springs (25) are supported on the left side surface of the driving block reset guide rod sliding seat (4), the front left side surface of the roller pressure release frame (9) is in contact with the front wall plate abutment surface (221) at the upper right side of the front wall plate (22), and the rear left side surface of the roller pressure release frame (9) is in contact with the rear wall plate abutment surface (231) at the upper right side of the rear wall plate (23).

5. The mold inner rolling core pulling device according to claim 1, characterized in that: A pair of mandrel driving block sliding guide rod guide sleeves (34) are provided on the mandrel driving block (3) and at positions corresponding to the pair of mandrel driving block sliding guide rods (31), and the pair of mandrel driving block sliding guide rods (31) are slidably matched with the pair of mandrel driving block sliding guide rod guide sleeves (34).

6. The mold inner rolling core pulling device according to claim 2, characterized in that: An articulated pad matching cavity (35) is formed at the lower part of the front end face and the rear end face of the core rod driving block (3), and an articulated pad hinge pin screw hole (351) is provided in the articulated pad matching cavity (35); the core rod driving block rightward movement mechanism (6) comprises a swing arm articulated seat (61), a front left swing arm (62), a rear left swing arm (63), a front right swing arm (64), a rear right swing arm (65), a front articulated pad (66), a rear articulated pad (67), a swing arm shaft (68), a front roller (69a) and a rear roller (69b); the swing arm articulated seat (61) is inserted into the swing arm articulated seat fixing cavity (11) and is screwed into the swing arm from the bottom of the base (1). The swing arm hinge seat fixing screw in the hinge seat fixing cavity (11) is fixed to the base (1), and a left swing arm hinge ear (611) folded upward is formed at the front and rear ends of the swing arm hinge seat (61), and a left swing arm hinge ear pin shaft hole (6111) is provided on the left swing arm hinge ear (611), the front left swing arm (62) is located behind the front right swing arm (64), and the upper ends of the front left swing arm (62) and the front right swing arm (64) are coaxially hinged to the front end of the swing arm shaft (68), and the lower end of the front left swing arm (62) is hinged to the left swing arm hinge ear (611) formed at the front end of the swing arm hinge seat (61) through the front left swing arm pin shaft (621) at a position corresponding to the left swing arm hinge ear pin shaft hole (6111). The lower end of the front right swing arm (64) is hinged to the front wall of the front hinge pad (66) through the front right swing arm pin shaft (641) at a position corresponding to the front right swing arm pin shaft hole (662) opened on the front wall of the front hinge pad (66), and the front right swing arm pin shaft (641) is also screwed into the hinge pin shaft screw hole (351) of the hinge pad, the rear left swing arm (63) is located in front of the rear right swing arm (65), and the upper ends of the rear left swing arm (63) and the rear right swing arm (65) are coaxially hinged to the rear end of the swing arm shaft (68), and the lower end of the rear left swing arm (63) is hinged to the left swing arm hinge ear pin shaft hole (6111) formed in the swing arm hinge through the rear left swing arm pin shaft at a position corresponding to the rear end of the swing arm hinge seat (61). The left swing arm hinge ear (611) at the rear end of the receiving seat (61) is hinged, and the lower end of the rear right swing arm (65) is hinged to the rear wall of the rear hinge pad (67) through the rear right swing arm pin shaft at a position corresponding to the rear right swing arm pin shaft hole (672) opened on the rear wall of the rear hinge pad (67), and the rear right swing arm pin shaft is also screwed into the hinge pad block hinge pin shaft screw hole (351), and the front hinge pad (66) is matched with the hinge pad matching cavity (35) corresponding to the lower part of the front end face of the core rod driving block (3) through the front hinge pad cavity (661) formed on the rear side of the middle, and the left and right cavity walls of the front hinge pad cavity (661) of the front hinge pad (66) are in contact with the left and right side surfaces of the core rod driving block (3).The rear articulated pad (67) is matched with the articulated pad matching cavity (35) corresponding to the lower part of the rear end face of the mandrel driving block (3) through the rear articulated pad cavity (671) formed on the front side of the middle part thereof, and the left and right cavity walls of the rear articulated pad cavity (671) of the rear articulated pad (67) are in contact with the left and right side faces of the mandrel driving block (3), and the front roller (69a) is arranged at the front side of the upper end of the front right swing arm (64) on the swing arm shaft (68). The front end portion, the rear roller (69b) is arranged at the rear end portion of the swing arm shaft (68) at a position located at the rear side of the upper end of the rear right swing arm (65), and a shaft sleeve (681) is sleeved in the middle of the swing arm shaft (68) and between the upper ends of the front left swing arm (62) and the rear left swing arm (63) facing each other; the front lower portion of the roller pressure release frame (9) corresponds to the front roller (69a), and the rear lower portion corresponds to the rear roller (69b).

7. The mold inner rolling core pulling device according to claim 6, characterized in that: A front longitudinal arm (91) is formed at the front end of the roller pressure release frame (9), and the lower end of the front longitudinal arm (91) corresponds to the front roller (69a). A rear longitudinal arm (92) is formed at the rear end of the roller pressure release frame (9), and the lower end of the rear longitudinal arm (92) corresponds to the rear roller (69b).

8. The mold inner rolling core pulling device according to claim 7, characterized in that: A front longitudinal arm inclined surface (911) is formed on the lower end surface of the front longitudinal arm (91), and a rear longitudinal arm inclined surface (921) is formed on the lower end surface of the rear longitudinal arm (92); the front longitudinal arm inclined surface (911) corresponds to and matches the front roller (69a), and the rear longitudinal arm inclined surface (921) corresponds to and matches the rear roller (69b); the front and rear longitudinal arm inclined surfaces (911, 921) are inclined downward from right to left.

9. The mold inner rolling core pulling device according to claim 6, characterized in that: The front left swing arm (62) and the front right swing arm (64) form a herringbone relationship with each other; the rear left swing arm (63) and the rear right swing arm (65) form a herringbone relationship with each other.

10. The mold inner rolling core pulling device according to claim 1, characterized in that: The movable guide block up and down floating compensation device (101) comprises a mandrel movable guide block floating seat (1011), a mandrel movable guide block first supporting spring (1012) and a mandrel movable guide block second supporting spring (1013), the mandrel movable guide block floating seat (1011) is arranged on the working platform (10) of the inner curling stamping forming machine, a first supporting spring cavity (10111) and a second supporting spring cavity (10112) are arranged on the mandrel movable guide block floating seat (1011), the mandrel movable guide block first supporting spring (1012) is arranged in the first supporting spring cavity (101 11), and the second supporting spring (1013) of the mandrel moving guide block is arranged in the second supporting spring cavity (10112), the mandrel moving guide block located on the left of the pair of mandrel moving guide blocks (8) is arranged in the first supporting spring cavity (10111) in an up-and-down floating manner, and its bottom contacts the upper end of the first supporting spring (1012) of the mandrel moving guide block, and the mandrel moving guide block located on the right of the pair of mandrel moving guide blocks (8) is arranged in the second supporting spring cavity (10112) in an up-and-down floating manner, and its bottom contacts the upper end of the second supporting spring (1013) of the mandrel moving guide block.

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