Open type large-stroke press machine with deep drawing product trimming structure

Abstract

The invention discloses an open type large-stroke press with a deep drawing product trimming structure. The open type large-stroke press comprises a press body, an upper die and a lower die, wherein the upper die and the lower die are arranged on the press body; a forming rod is arranged on the upper die, and a forming cavity matched with the forming rod is formed in the lower die; the forming rod comprises a rod body and a rotating sleeve which is matched with the rod body into a whole; the rod body and the rotating sleeve are relatively fixed or rotated through a plurality of inserts; the rod body and the rotating sleeve are each provided with a sliding groove matched with the insert. A driving ring for driving the insert to vertically slide is arranged on the upper die; a driving groove for driving the insert to move away from the center of the rod body is formed in the driving ring, and a polishing groove is formed in the lower end of the insert; according to the synchronous trimming structure of the open type large-stroke press machine for the deep drawing product after stamping, abrasion between the upper opening and the side wall of the lower die and abrasion between the inner ring of the upper opening and the wall body of the core rod are greatly reduced, and meanwhile the polishing time is saved.

Description

Technical Field

[0001] The invention relates to the technical field of punching machines, in particular to an open-type large-stroke press machine with a deep-drawing product trimming structure. Background Art

[0002] The open-type long-stroke press is used for products that require long-stroke stamping to form, such as round steel barrels and other products with deep drawing strokes, such as round battery shells, stainless steel barrels, etc. When the above-mentioned press is used to form deep-drawn products, single-pass or multi-pass processes are used. In the multi-pass forming process, the first pass is a single expansion and deep stamping of the barrel, while the excess material is cut off, and then the barrel diameter is further reduced in the second pass, while the depth of the barrel is further increased.

[0003] In the above-mentioned stamping process, large burrs and flash are formed on the upper mouth of the barrel body after shearing and stamping in the first process, so that when further stamping and forming is performed in the second process, the upper mouth contacts the cavity wall of the lower die, which causes large friction and scratches, thereby accelerating the wear of the lower die; at the same time, in order to improve efficiency, continuous stamping and forming are continuous processes, and the existing technology is difficult to timely trim the upper mouth of the barrel body formed in the previous processes. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an open-type large-stroke press with a deep-drawn product trimming structure, thereby solving the problem of synchronous trimming of the upper mouth of the deep-drawn product during the first forming process, thereby reducing the friction between the upper mouth and the lower die in the subsequent process, reducing the wear of the lower model cavity, and improving the life of the mold.

[0005] To solve the above technical problems, the present invention solves the problems through the following technical solutions: an open-type long-stroke press with a deep-drawing product trimming structure comprises a press body and an upper die and a lower die arranged on the press body.

[0006] In the above scheme, preferably, the upper mold is provided with a forming rod, and the lower mold is provided with a forming cavity matched with the forming rod; The forming rod comprises a rod body and a rotating sleeve integrally matched therewith; The rod body and the rotating sleeve are relatively fixed or rotated by a plurality of inlays; The rod body and the rotating sleeve are both provided with a sliding groove matched with the inlay; The upper die is provided with a driving ring for driving the inlay to slide vertically; The driving ring is provided with a driving groove for driving the inlay to move away from the center of the rod body, and the lower end of the inlay is provided with a grinding groove; After the rotating sleeve and the rod body are separated from relative rotation, the inlay is driven to move along the driving groove, and the upper edge of the part is polished when the inlay is located at a side away from the center of the rod body.

[0007] In the above scheme, preferably, a motor is provided on the upper mold, and a synchronous wheel transmission-connected to the motor is provided on the rotating sleeve.

[0008] In the above solution, preferably, the inlay is provided with an extension rod, one end of the extension rod is connected to the inlay, and the other end of the extension rod is provided with a clamping block that is slidably engaged with the driving groove.

[0009] In the above scheme, preferably, the upper mold is symmetrically provided with lifting push rods connected to the driving ring.

[0010] In the above scheme, preferably, the driving ring is provided with a number of contact rods corresponding to the number of the inlays, and the synchronous wheel is provided with a top block matched with the contact rods; The driving groove includes a first track groove corresponding to the position of the contact rod and a second track groove for connecting adjacent first track grooves.

[0011] In the above solution, preferably, transition slopes are provided between the two ends of the top block and the synchronous wheel.

[0012] In the above scheme, preferably, the lifting push rod is provided with a sliding rod that cooperates with the driving ring, one end of the sliding rod is provided with a first limit plate, and the other end is provided with a second limit plate after passing through the driving ring, and a driving spring is provided between the second limit plate and the driving ring.

[0013] In the above solution, preferably, the top block and the contact rod are made of wear-resistant alloy.

[0014] In the above scheme, preferably, the grinding groove is an arc groove, and the diameter of the central arc of the arc groove is the same as the upper diameter of the part after molding.

[0015] In the above scheme, preferably, the synchronous wheel is provided with a guide sleeve that matches the contact rod, and a buffer spring is provided between the contact rod and the synchronous wheel.

[0016] The beneficial effects of the present invention are as follows: the present invention provides an open-type large-stroke press machine for synchronous trimming of deep-drawn products after stamping, so that the deep-drawn products can be trimmed and polished at the upper mouth synchronously after the first stamping process, so as to reduce the wear between the lower die and the upper die core rod in the subsequent process, greatly reduce the wear between the upper mouth and the side wall of the lower die and between the upper mouth inner ring and the core rod wall, and save grinding time at the same time, and perform grinding while the continuous stamping process is in progress; finally, while improving the service life of the mold without reducing production efficiency, it is beneficial to energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the press of the present invention.

[0018] Figure 2 It is a schematic diagram of the upper mold structure when viewed from above of the present invention.

[0019] Figure 3 For the present invention Figure 2 Schematic diagram of the structure in cross-section.

[0020] Figure 4 It is a schematic diagram of the explosion structure at the forming rod of the present invention.

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the driving ring of the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the inlay of the present invention.

[0023] Figure 7 It is a schematic diagram of the matching structure of the inlay and the drive ring of the present invention.

[0024] Figure 8 The figure is a plane motion trajectory diagram of the inlay of the present invention at the driving ring. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figure 1-Figure 8 .

[0026] An open-type long-stroke press with a deep-drawn product trimming structure includes a press body 1 and an upper die 2 and a lower die 101 arranged on the press body 1. The press body 1 is an open-type long-stroke press, which is used for stamping deep-drawn products. In this embodiment, a stainless steel barrel body for stamping deep drawing is taken as an example.

[0027] The upper die 2 is fixed on the stamping slide of the press body 1, and the lower die 101 is fixed on the base of the press body 1. The upper die 2 is provided with a forming rod 201, and the lower die 101 is provided with a forming cavity 102 matched with the forming rod 201. After the stainless steel plate is placed on the lower die 101, the steel plate is stamped and stretched by pressing down the forming rod 201 of the upper die 2 to form a deep-drawn stainless steel barrel body. The stainless steel barrel body usually needs to be stamped and stretched for multiple times to reduce the diameter of the barrel body before the required stainless steel barrel body can be formed.

[0028] In order to make the upper mouth of the barrel body in a relatively smooth state after forming in the front-end process, thereby reducing the wear on the mold of the next process, a mechanism for synchronously grinding the upper mouth of the barrel body after a single forming is set on the forming rod 201 in this embodiment. This embodiment takes the first stamping process as an example. Specifically, the forming rod 201 includes a rod body 202 and a rotating sleeve 203 that is integrated therewith. The rod body 202 is fixed on the upper mold 2, and the lower end of the rod body 202 is a forming section, and the upper part of the forming section is a rod body part, which is used to connect the forming section and the upper mold 2, and the diameter of the rod body part is smaller than the diameter of the forming section.

[0029] The rod body 202 is provided with a rotating sleeve 203. Figure 3-Figure 5 As shown, the upper end surface of the forming section of the rod body 202 is connected to the lower end surface of the rotating sleeve 203, and the outer diameter of the lower end of the rotating sleeve 203 is the same as the outer diameter of the forming section. A plurality of slide grooves 205 are evenly arranged around the central circumference of the rod body 202 at the upper end surface of the forming section. The slide grooves 205 are open grooves opening vertically upward. The lower end of the rotating sleeve 203 is provided with slide grooves corresponding to the number of the slide grooves 205 on the forming section and having the same groove body shape. The length of the slide grooves on the rotating sleeve 203 is greater than the slide grooves on the forming section.

[0030] The forming section on the rod body 202 and the rotating sleeve 203 are relatively fixed or rotated by a plurality of inlays 204. Specifically, the inlay 204 is vertically slidably clamped in the slide groove 205. Initially, the lower end face of the inlay 204 contacts the bottom of the slide groove 205 on the forming section, and there is a certain distance between the upper end face and the bottom of the slide groove 205 on the rotating sleeve 203. At this time, the docking plane between the upper end face of the forming section and the lower end face of the rotating sleeve 203 is located in the middle of the inlay 204, so that the rod body 202 and the rotating sleeve 203 are relatively fixed through the inlay 205; when the inlay 204 slides upward so that its upper end face contacts the bottom of the slide groove 205 of the rotating sleeve 203, the lower end face of the inlay 204 is located above the upper end face of the forming section. At this time, when the rotating sleeve 203 rotates, the inlay 204 can be driven to rotate synchronously relative to the rod body 202.

[0031] The outer wall of the inlay 204 is an arc wall, and the arc diameter of the outer wall is the same as the outer diameter of the forming section of the rod body 202. When the forming rod 201 and the forming cavity 102 in the lower mold 101 are formed, the rod body 202 and the rotating sleeve 203 are in a fixed state. At this time, the forming section at the lower end of the rod body 202 and the sleeve wall at the lower end of the rotating sleeve 203 are seamlessly connected, and the outer wall at the lower end of the inlay 204 fits with the outer walls of the rod body 202 and the rotating sleeve 203, so that they can form an integral forming part, that is, Figure 2 The upper opening of the formed stainless steel barrel is located between the upper end surface of the forming section and the docking plane of the lower end surface of the rotating sleeve 203 and the upper end surface of the inlay 204.

[0032] In order to enable the inlay 204 to move upward after the stainless steel barrel is formed and drive the inlay 204 to slide away from the center of the rod body 202 to grind the upper mouth of the barrel body, a driving ring 3 is provided on the upper mold 2 to drive the inlay 204 to slide vertically, and the lower end surface of the upper mold 2 is symmetrically provided with a lifting push rod 5 connected to the driving ring 3, and the push rod end of the lifting push rod 5 is connected to the driving ring 3, and the lifting push rod 5 can adopt a pneumatic push rod or a hydraulic push rod, which can be adaptively adapted according to the actual working conditions and power source selection.

[0033] The two side surfaces of the inlay 204 are parallel to the groove side surfaces of the slide groove 205, and after the inlay 204 is inserted into the slide groove 205, a seamless connection can be achieved, that is, the gap is negligible relative to the requirements of the metal forming mold; an extension rod 206 is fixedly provided on the side of the upper end of the inlay 204 away from the center of the rod body 202, one end of the extension rod 206 is fixed to the outer wall of the inlay 204, and the other end is provided with a clamping block 207 connected to the drive ring 3. Specifically, a drive groove 301 is provided in the drive ring 3, and the clamping block 207 is clamped with the drive groove 301. Figure 3 and Figure 5 shown.

[0034] In this embodiment, four sets of inlays 204 are set as an example, so as to set Figure 5 The inlay 204 shown is in a state of cooperation with the driving groove 301. As shown in the figure, the driving groove 301 includes a first track groove 304 and a second track groove 305 for connecting the adjacent first track grooves 304. The distance between the second track groove 305 and the center of the rod body 202 is greater than the distance between the first track groove 304 and the center of the rod body 202, and the first track groove 304 and the second track groove 305 are transitioned by an arc. The driving groove 301 is a T-slot, and the clamping block 207 and the extension rod 206 form a T-type clamping mechanism, and the outer surface of the clamping block 207 can be set to a spherical surface or an arc transition surface; the driving groove 301 is connected with the inner hole wall of the driving ring 3.

[0035] When the inlay 204 is in a seamless embedding state with the rotating sleeve 203 and the slide groove 205 on the rod body 202, the snap-in block 207 of the inlay 204 is in the first track groove 304. The number of the first track grooves 304 corresponds to the number of the inlays 204. The drive ring 3 can be vertically lifted and lowered relative to the rotating sleeve 203, but cannot rotate relative to it. When the rotating sleeve 203 rotates, the snap-in block 207 of the inlay 204 is driven to rotate, so that the snap-in block 207 slides along the first track groove 304 to the second track groove 305, thereby causing the inlay 204 to move away from the center of the rod body 202.

[0036] The lower end of the inlay 204 is provided with a grinding groove 302, and the grinding groove 302 is an arc groove, and the central arc diameter of the arc groove is the same as the diameter of the upper mouth of the part after molding; after the driving ring 3 is lifted upward by the lifting push rod 5, the inlay 204 slides upward, and at this time, the rotating sleeve 203 is separated from the rod body 202 and is in a relative rotation state, and then the rotating sleeve 203 rotates to drive the inlay 204 to move along the driving groove 302, and when the inlay 204 is on the side away from the center of the rod body 202, the upper mouth of the part is polished through the grinding groove 302 at the lower end of the inlay 204.

[0037] The upper mold 2 is provided with a motor 4, and a synchronous wheel 401 transmission-connected to the motor 4 is fixedly provided on the rotating sleeve 203. Preferably, the rotating sleeve 203 and the synchronous wheel 401 can be fixed by spline or flat key connection; a driving wheel is provided on the motor 4, and the driving wheel and the synchronous wheel 401 are transmission-connected by a transmission belt. Preferably, the driving wheel and the synchronous wheel 401 are both toothed synchronous wheels, and the transmission belt is a synchronous belt, so as to realize efficient power transmission. The motor 4 is a stepping motor or a servo motor, and is connected to a PLC controller to realize high-precision control of the rotation angle of the synchronous wheel 401.

[0038] A number of contact rods 303 corresponding to the number of the inlays 204 are provided on the upper end surface of the driving ring 3, and the contact rods 303 are arranged directly above the position of the first track groove 304; a number of top blocks 402 corresponding to the number of the contact rods 303 are provided on the lower end surface of the synchronous wheel 401, and a groove is provided between adjacent top blocks 402, and the groove is directly above the contact rod 303 in the initial state; transition inclined surfaces 403 are provided between the two ends of the top blocks 402 and the grooves of the synchronous wheel 401; the top blocks 402 and the contact rods 303 are both made of wear-resistant alloy; a guide sleeve 404 cooperating with the contact rods 303 is provided on the synchronous wheel 401, and a buffer spring 405 is provided between the contact rods 303 and the synchronous wheel 401.

[0039] A sliding rod 501 matching the driving ring 3 is provided on the push rod end of the lifting push rod 5, a first limit plate 502 is provided at one end of the sliding rod 501, and a second limit plate 503 is provided at the other end after passing through the mounting plates on both sides of the driving ring 3, and a driving spring 504 is provided between the second limit plate 503 and the driving ring 3.

[0040] When the rotating sleeve 203 rotates, the synchronous wheel 401 rotates synchronously, and the top block 402 on the lower end surface thereof drives the driving ring 3 to be pressed down after abutting against the contact rod 303, so that the grinding groove 302 contacts and grinds with the upper opening of the barrel body.

[0041] The production process of stainless steel drums using an open-type large-stroke press with a deep-drawn product trimming structure as described above is as follows: S1: Place the stainless steel blank plate on the lower die 101. A lifting push rod is provided in the molding cavity 102 of the lower die 101. This is a conventional setting of a stretching die and will not be described in detail here. Then start the press machine to make the upper die 2 slide down through the stamping slide block on the press machine body 1. S2: In the stamping state, the rotating sleeve 203 is integrally arranged with the rod body 202 through the inlay 204 and is in a relatively fixed state. After the forming rod 201 slides down, it cooperates with the forming cavity 102 to form the stainless steel barrel. After forming, the upper mouth of the stainless steel barrel is located between the joint surface of the rod body 202 and the rotating sleeve 203 and the upper end surface of the inlay 204; S3: After the stamping is completed, the upper die 2 slides upward, and the lifting push rod in the lower die 101 contacts the bottom surface of the stainless steel barrel and slides upward synchronously; S4: While the S3 process is in progress, the lifting push rod 5 is started, and the driving ring 3 slides upward to drive the inlay 204 to slide upward, so that the rotating sleeve 203 and the rod body 202 are in a state of relative rotation. At this time, the lower end surface of the inlay 204 is above the upper opening of the stainless steel barrel, and the distance between them is 1-5mm; S5: Start the motor 4 to rotate the synchronous wheel 401, driving the rotating sleeve 203 to rotate synchronously. When the rotating sleeve 203 rotates, the inlay 204 slides along the driving groove 301 in the driving ring 3 through the clamping block 207 on the extension rod 206, so that the inlay 204 is away from the center of the rod body 202 when it cooperates with the second track groove 305. At this time, the grinding groove 302 at the lower end of the inlay 204 is just above the upper opening of the stainless steel barrel body; S6: When the inlay 204 cooperates with the second track groove 305, the contact rod 303 and the top block 402 are in a top-contact state, so that the drive ring 3 is in a downward pressure state through the top block 402, and has a certain elastic buffer pressure under the action of the drive spring 504 and the buffer spring 405, so that the grinding is more stable; S7: After the driving ring 3 is pressed down, the grinding groove 302 is brought into contact with the upper opening of the stainless steel barrel by the downward pressure of the inlay 204, thereby achieving the inner and outer grinding of the upper opening of the stainless steel barrel.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An open-type long-stroke press with a deep-drawing product trimming structure, comprising a press body (1) and an upper die (2) and a lower die (101) arranged on the press body (1), characterized in that: The upper mold (2) is provided with a molding rod (201), and the lower mold (101) is provided with a molding cavity (102) that matches the molding rod (201); The shaping rod (201) comprises a rod body (202) and a rotating sleeve (203) integrally fitted therewith; The rod body (202) and the rotating sleeve (203) are relatively fixed or rotated via a plurality of inlay pieces (204); The rod body (202) and the rotating sleeve (203) are both provided with a sliding groove (205) that matches the inlay piece (204); The upper mold (2) is provided with a driving ring (3) for driving the insert (204) to slide vertically; The driving ring (3) is provided with a driving groove (301) for driving the inlay (204) to move away from the center of the rod body (202), and the lower end of the inlay (204) is provided with a grinding groove (302); After the rotating sleeve (203) and the rod body (202) are separated from relative rotation, the inlay (204) is driven to move along the driving groove (302), and the upper edge of the part is polished when the inlay (204) is located at a side away from the center of the rod body (202).

2. The open-type long-stroke press with a deep-drawing product trimming structure according to claim 1, characterized in that: The upper die (2) is provided with a motor (4), and the rotating sleeve (203) is provided with a synchronous wheel (401) which is transmission-connected to the motor (4).

3. The open-type long-stroke press with a deep-drawing product trimming structure according to claim 1, characterized in that: An extension rod (206) is provided on the inlay piece (204), one end of the extension rod (206) is connected to the inlay piece (204), and the other end of the extension rod (206) is provided with a clamping block (207) that is slidably clamped with the driving groove (301).

4. The open-type long-stroke press with a deep-drawing product trimming structure according to any one of claims 1 to 3, characterized in that: The upper mold (2) is symmetrically provided with lifting push rods (5) connected to the drive ring (3).

5. The open-type long-stroke press with a deep-drawing product trimming structure according to claim 2, characterized in that: The driving ring (3) is provided with a plurality of contact rods (303) corresponding to the number of the inlays (204), and the synchronous wheel (401) is provided with a top block (402) matching with the contact rods (303); The driving groove (301) comprises a first track groove (304) corresponding to the position of the contact rod (303) and a second track groove (305) used to connect adjacent first track grooves (304).

6. The open-type long-stroke press with a deep-drawing product trimming structure according to claim 5, characterized in that: Transition slopes (403) are provided between the two ends of the top block (402) and the synchronous wheel (401).

7. The open-type long-stroke press with a deep-drawing product trimming structure according to claim 4, characterized in that: The lifting push rod (5) is provided with a sliding rod (501) matched with the driving ring (3); one end of the sliding rod (501) is provided with a first limit plate (502); the other end of the sliding rod (501) is provided with a second limit plate (503) after passing through the driving ring (3); a driving spring (504) is provided between the second limit plate (503) and the driving ring (3).

8. The open-type long-stroke press with a deep-drawing product trimming structure according to claim 5, characterized in that: The top block (402) and the contact rod (303) are both made of wear-resistant alloy.

9. The open-type long-stroke press with a deep-drawing product trimming structure according to claim 1, characterized in that: The grinding groove (302) is an arc-shaped groove, and the diameter of the central arc of the arc-shaped groove is the same as the diameter of the upper opening of the part after molding.

10. The open-type long-stroke press with a deep-drawing product trimming structure according to claim 5, characterized in that: The synchronous wheel (401) is provided with a guide sleeve (404) that matches the contact rod (303), and a buffer spring (405) is provided between the contact rod (303) and the synchronous wheel (401).

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