CN114393794A - Forming die convenient to back-off shaping and drawing of patterns - Google Patents
Forming die convenient to back-off shaping and drawing of patterns Download PDFInfo
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- CN114393794A CN114393794A CN202210066294.2A CN202210066294A CN114393794A CN 114393794 A CN114393794 A CN 114393794A CN 202210066294 A CN202210066294 A CN 202210066294A CN 114393794 A CN114393794 A CN 114393794A
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- 238000007493 shaping process Methods 0.000 title description 7
- 238000000465 moulding Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims description 38
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 12
- 238000007906 compression Methods 0.000 description 12
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C2045/445—Removing or ejecting moulded articles for undercut articles using the movable undercut forming element for ejection of the moulded article
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a forming die convenient for back-off forming and demoulding, which comprises a first forming die and a second forming die, wherein a back-off forming core-pulling mechanism is arranged between the first forming die and the second forming die, and the back-off forming core-pulling mechanism comprises: the first core-pulling frame body is provided with a core-pulling sliding block in a sliding mode, the core-pulling sliding block comprises a sliding channel, a sliding block is arranged in the sliding channel in a sliding mode and comprises a first guide inclined plane, a core-pulling forming block is arranged on the first guide inclined plane in a sliding mode, a second guide inclined plane is arranged on the lower side face of the core-pulling forming block, the first guide inclined plane is matched with the second guide inclined plane in a laminating mode, the first guide inclined plane comprises a first guide portion, the second guide inclined plane comprises a second guide portion, and the first guide portion is matched with the second guide portion. When the die is used for demolding, the inner wall on the product is sunken and reliably formed, the product is prevented from being damaged by pulling in the molding process, and the die is suitable for production under the conditions of high product and large buckling position.
Description
Technical Field
The invention relates to the technical field of forming dies for forming large-scale products, in particular to a forming die convenient for back-off forming and demoulding.
Background
At present, sunken (back-off) in the inner wall shaping of product adopts the fashioned mode of loosing core, but the current mode of loosing core generally adopts the oblique top mode of loosing core to realize loosing core, because in the great product forming process of volume, the volume based on the back-off structure is also great relatively to the oblique top atress is limited, hardly reaches reliable drawing of patterns after the inner wall recess forms, also can't reach the back-off high accuracy requirement after the product shaping, the product takes place to damage easily at the drawing of patterns in-process even, makes the product shaping rate low.
Disclosure of Invention
The invention aims to solve the technical defects and provides a forming die convenient for back-off forming and demoulding, which comprises the following specific modes.
The invention designs a forming die convenient for back-off forming and demoulding, which comprises a first forming die and a second forming die, wherein the first forming die sequentially comprises a first fixing plate and a first module from top to bottom, the first module is fixed on the first fixing plate, and the first module comprises a forming cavity and at least one driving part;
the second forming die sequentially comprises a second module, a foot block and a second fixing plate from top to bottom, the foot block is fixedly connected with the second module and the second fixing plate respectively, a sliding channel and a die core corresponding to the forming cavity are arranged on the second module, the die core is arranged in the forming cavity, an inverted buckle forming core pulling mechanism and a side hole forming core pulling mechanism are arranged beside the die core, the side hole forming core pulling mechanism comprises at least one side hole forming block which is arranged on the second module in a sliding mode, and a driving part is matched with the side hole forming block to drive the side hole forming block to translate or retreat to the die core;
the back-off forming core-pulling mechanism comprises a first translation driving device and a core-pulling slide block, wherein the core-pulling slide block is arranged in a sliding channel in a sliding mode, and the first translation driving device is connected with the core-pulling slide block; the core pulling sliding block comprises a sliding channel, a sliding block is arranged in the sliding channel in a sliding mode, the sliding block comprises a first guide inclined plane, a core pulling forming block is arranged on the first guide inclined plane in a sliding mode, a second guide inclined plane is arranged on the lower side surface of the core pulling forming block, the first guide inclined plane is matched with the second guide inclined plane in an attaching mode, the first guide inclined plane comprises a first guide part, the second guide inclined plane comprises a second guide part, and the first guide part is matched with the second guide part; in the horizontal sliding process of the sliding block, the core-pulling forming block slides along the first guide inclined plane to make the core-pulling forming block perform lifting action; the top surface of the core-pulling forming block is provided with a forming part for forming the inner wall depression, and the front side surface of the core-pulling forming block is abutted against the mold core;
and a second translation driving device for driving the sliding block to translate is arranged on the core-pulling sliding block, and the first translation driving device is connected with the sliding block.
Preferably, the core-pulling forming block comprises a positioning part, the positioning part is positioned between the first guide inclined plane and the upper inner wall of the sliding channel, and the second guide inclined plane is positioned on the bottom surface of the positioning part;
the forming part comprises a recess and two bulges, and the two bulges are respectively positioned at two ends of the horizontal inner wall of the recess.
Preferably, the first guiding inclined plane further comprises a third guiding part, the second guiding inclined plane further comprises a fourth guiding part, and the third guiding part is in sliding fit with the fourth guiding part; the third guide part comprises a second guide channel, and the fourth guide part comprises a second guide block; the second guide block is correspondingly embedded into the second guide channel.
Preferably, the first guide part comprises a first guide channel with a dovetail-shaped cross section, the second guide part comprises a first guide block with a dovetail-shaped cross section, or the first guide part comprises a first guide block with a dovetail-shaped cross section, and the second guide part comprises a first guide channel with a dovetail-shaped cross section;
the first guide block is correspondingly embedded into the first guide channel.
Preferably, a sliding guide groove is formed in the inner wall of the first core pulling frame body, a sliding guide block is arranged on the outer wall of the core pulling slide block, and the sliding guide block is correspondingly embedded into the sliding guide groove.
Preferably, the inner wall of the sliding channel is provided with a fifth guide part, and the sliding block is provided with a sixth guide part matched with the fifth guide part; the fifth guide part comprises a third guide channel with a dovetail-shaped cross section, the sixth guide part comprises a third guide block with a dovetail-shaped cross section, or the fifth guide part comprises a third guide block with a dovetail-shaped cross section, and the sixth guide part comprises a third guide channel with a dovetail-shaped cross section;
the third guide block is correspondingly embedded into the third guide channel.
Preferably, be provided with the first chamber that compresses tightly with the shaping chamber intercommunication on the first module, the slider of loosing core is including compressing tightly the portion, is provided with the slope wedging face in the portion that compresses tightly, is fixed with the wedging piece on the slope wedging face, and first chamber that compresses tightly includes first compression inclined plane, and the shaping piece of loosing core is located between first portion and the mold core that compresses tightly, and the portion that compresses tightly is arranged in first compression intracavity, and the wedging piece with first compression inclined plane laminating.
Preferably, the at least one driving part is alternatively provided as three driving parts, and the at least one side hole forming block is alternatively provided as three side hole forming blocks;
the three driving parts comprise inclined guide posts, the three side hole forming blocks comprise side hole forming parts and inclined guide holes, and the three inclined guide posts are matched with the three inclined guide holes respectively.
Preferably, the three driving portions further comprise second compression cavities communicated with the forming cavities, the three inclined guide columns are located beside the second compression cavities respectively, the three second compression cavities comprise three second compression inclined planes, the three side hole forming blocks further comprise third compression inclined planes located on the side hole forming portions, the three side hole forming portions respectively contain objects, the second compression cavities are arranged in the second compression cavities, and the second compression inclined planes are attached to the third compression inclined planes.
Preferably, the second module is provided with a groove and a through groove, a mold core block is fixed in the groove, the mold core is arranged on the mold core block, the mold core block is provided with an inner recess, the inner recess and the through groove are spliced to form a sliding channel, a first core-pulling frame body is fixed at the end opening of the sliding channel, and the first translation driving device is installed on the first core-pulling frame body; and a second core pulling frame body is fixed on the core pulling slide block, and a second translation driving device is arranged on the second core pulling frame body.
Preferably, the first and second translational drives each comprise a cylinder.
According to the forming die convenient for back-off forming and demolding, when demolding is conducted, the core-pulling forming block can be driven to descend, the forming portion of the core-pulling forming block is separated from the inner wall of a product and sunken, then the core-pulling forming block is driven to be separated from the inner cavity of the product, so that the back-off forming of the inner wall of the product is reliable, the product is prevented from being damaged by pulling in the forming process, and the forming die is suitable for production under the conditions of high product and large buckling position.
Drawings
FIG. 1 is a schematic view of the overall structure (one);
FIG. 2 is a schematic view of the overall structure (two);
FIG. 3 is a schematic view (III) of the overall structure;
FIG. 4 is a schematic structural diagram (one) of an inverted core-pulling mechanism;
FIG. 5 is a schematic structural view of a back-off molding core-pulling mechanism (II);
FIG. 6 is a schematic structural view (III) of an inverted buckle forming core-pulling mechanism;
FIG. 7 is a schematic structural view (IV) of an inverted buckle forming core-pulling mechanism;
FIG. 8 is a schematic structural view (V) of an inverted buckle forming core-pulling mechanism;
FIG. 9 is a schematic view of the product configuration (one);
FIG. 10 is a schematic view of the product configuration (two);
FIG. 11 is a schematic structural diagram (I) of a core-pulling molding block;
fig. 12 is a schematic view (two) of the core back forming block structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Example 1:
as shown in the drawings, the forming mold for facilitating the back-off forming and demolding described in this embodiment includes a first forming mold 100 and a second forming mold 200, the first forming mold 100 includes, in order from top to bottom, a first fixing plate 101 and a first mold block 102, the first mold block 102 is fixed on the first fixing plate 101, and the first mold block 102 includes a forming cavity 104 and at least one driving portion 108; the first molding die 100 functions as a movable die.
The second forming die 200 sequentially comprises a second die block 201, a foot block 202 and a second fixing plate 203 from top to bottom, the foot block 202 is respectively and fixedly connected with the second die block 201 and the second fixing plate 203, a sliding channel 219 and a die core 217 corresponding to the forming cavity 104 are arranged on the second die block 201, the die core 217 is arranged in the forming cavity 104, an inverted buckle forming core pulling mechanism 300 and a side hole forming core pulling mechanism are arranged beside the die core 217, the side hole forming core pulling mechanism comprises at least one side hole forming block 207 which is arranged on the second die block 201 in a sliding manner, and a driving part 108 is matched with the side hole forming block 207 to drive the side hole forming block 207 to translate or retreat to translate towards the die core 217; the second molding die 200 serves as a fixing die.
The back-off forming core-pulling mechanism 300 comprises a first translation driving device 6 and a core-pulling slide block 2, wherein the core-pulling slide block 2 is arranged in a sliding channel 219 in a sliding manner, and the first translation driving device 6 is connected with the core-pulling slide block 2; the core pulling slide block 2 comprises a sliding channel 21, a sliding block 3 is arranged in the sliding channel 21 in a sliding mode, the sliding block 3 comprises a first guide inclined surface 31, a core pulling forming block 4 is arranged on the first guide inclined surface 31 in a sliding mode, a second guide inclined surface 41 is arranged on the lower side surface of the core pulling forming block 4, the first guide inclined surface 31 is matched with the second guide inclined surface 41 in an attaching mode, the first guide inclined surface 31 comprises a first guide part 32, the second guide inclined surface 41 comprises a second guide part 42, and the first guide part 32 is matched with the second guide part 42; in the horizontal sliding process of the sliding block 3, the core-pulling forming block 4 slides along the first guide inclined plane 31 to make the core-pulling forming block perform lifting action; the top surface of the core-pulling forming block 4 is provided with a forming part 44 for forming the inner wall depression 441, and the front side surface of the core-pulling forming block 4 abuts against the mold core 217; and a second translation driving device 8 for driving the sliding block 3 to translate is arranged on the core-pulling sliding block 2, and the first translation driving device 6 is connected with the sliding block 3. Preferably, the first translation driving device 6 and the second translation driving device 8 both comprise oil cylinders, which are suitable for the forming of large products.
Preferably, the molding portion 44 includes a recess 441 and two protrusions 442, and the two protrusions 442 are respectively located at both ends of a horizontal inner wall of the recess 441, so that the inner wall of the upper side of the window of the product forms the recess 441, i.e., is inverted.
Preferably, an ejector plate is disposed between the second module 201 and the second fixing plate 203, and an ejector pin is fixed on the ejector plate and penetrates through the second module 201 and the mold core 217.
The molding method of the molding die comprises the following steps:
step S1, after the first molding die 100 and the second molding die 200 are closed, a die cavity is formed between the inner wall of the molding cavity 104 and the outer wall of the die core 217, the core-pulling molding block 4 and the side hole molding portion 209 of the side hole molding core-pulling mechanism are both disposed in the die cavity, the core-pulling molding block 4 is located at the high position of the first guiding inclined plane 31, and the front side and the rear side of the core-pulling molding block 4 respectively abut against the core-pulling slider 2 and the molding die core 2177; (ii) a
Step S2, injecting the melting stock by using the pouring channel on the first module 102, entering the die cavity, and performing die assembly and pressure maintaining after the material injection is finished;
step S3, cooling and forming after pressure maintaining is finished;
step S4, after cooling, separating the first molding die 100 and the second molding die 200 from each other to open the die, after opening the die, the second translation driving device 8 drives the sliding block 3 to move backward, so that the core-pulling molding block 4 moves to the lower position of the first guide inclined plane 31 under the cooperation of the first guide inclined plane 31 and the second guide inclined plane 41, so that the molding portion 44 of the core-pulling molding block 4 is separated from the recess 441 on the inner wall of the product, and the core-pulling molding block 4 is correspondingly located at the window of the product, and meanwhile, the side hole molding block 207 of the side hole molding mechanism moves backward;
step S5, the first translation driving device 6 drives the core-pulling slide block 2 to retreat, so that the core-pulling forming block 4 is separated from the product through the window of the product;
and step S6, pushing the ejector pin plate upwards to enable the upper end of the ejector pin to penetrate out of the mold core 217 to eject the formed product, and finishing blanking and demolding of the product.
Preferably, in order to position the mold opening and closing, the first module 102 is provided with a plurality of guide holes, the second module 201 is provided with a plurality of guide posts corresponding to the guide holes, and the guide posts are inserted into the guide holes correspondingly
Preferably, the core back forming block 4 includes a positioning portion 45, the positioning portion 45 is located between the first guiding inclined surface 31 and the upper inner wall of the sliding channel 21, the second guiding inclined surface 41 is located on the bottom surface of the positioning portion 45, and the core back forming block 4 is stable in operation and capable of improving displacement accuracy in the lifting displacement process due to the structural arrangement of the core back forming block.
Preferably, the first guide part 32 includes a first guide passage 321 having a dovetail shape in cross section, the second guide part 42 includes a first guide block 421 having a dovetail shape in cross section, and the first guide block 421 is fixed to the second guide slope 41 by a bolt, or the first guide part 32 includes a first guide block 421 having a dovetail shape in cross section, and the second guide part 42 includes a first guide passage 321 having a dovetail shape in cross section; the first guide block 421 is correspondingly inserted into the first guide passage 321. The structure of the core pulling device is arranged so that the core pulling forming block 4 and the sliding block 3 slide relatively to each other, the core pulling forming block 4 can be lifted more stably, and the core 217 and the core pulling sliding block 2 between the core pulling forming blocks 4 can be lifted.
In this embodiment, the first guiding inclined surface 31 further includes a third guiding portion 33, the second guiding inclined surface 41 further includes a fourth guiding portion 43, and the third guiding portion 33 is slidably engaged with the fourth guiding portion 43; specifically, the third guide portion 33 includes the second guide passage 331, and the fourth guide portion 43 includes the second guide block 431; the second guide block 431 is correspondingly embedded in the second guide passage 331. The structure of the core pulling device enables the core pulling forming block 4 and the sliding block 3 to slide relatively, so that the core pulling forming block 4 can be lifted more stably.
In order to stabilize the sliding of the sliding block 3, a positioning block 211 is disposed on the upper inner wall of the sliding channel 21 and inserted into the second guiding channel 331.
Preferably, be provided with the guide slot 11 that slides on the inner wall of first core back frame body 1, be provided with the guide block 22 that slides on the outer wall of core back slider 2, the guide block 22 that slides is embedded into the guide slot 11 that slides correspondingly, and its structural setting makes the reciprocating of core back slider 2 slip reliable and stable.
Preferably, the inner wall of the sliding channel 21 is provided with a fifth guide part 212, the sliding block 3 is provided with a sixth guide part 34 matched with the fifth guide part 212, specifically, the fifth guide part 212 comprises a third guide channel 213 with a dovetail-shaped cross section, the sixth guide part 34 comprises a third guide block 341 with a dovetail-shaped cross section, the third guide block 341 is fixed on the bottom surface of the sliding block 3 by a bolt, or the fifth guide part 212 comprises a third guide block 341 with a dovetail-shaped cross section, and the sixth guide part 34 comprises a third guide channel 213 with a dovetail-shaped cross section; the third guide block 341 is correspondingly inserted into the third guide passage 213. The structure of the sliding block is arranged so that the sliding block 3 can obtain the positioning sliding effect in the sliding process, the use performance is improved, and the sliding precision is improved.
In this embodiment, the first module 102 is provided with a first pressing cavity 109 communicated with the molding cavity 104, the core pulling slider 2 includes a pressing portion 23, the pressing portion 23 is provided with an inclined wedging surface 45, an wedging block is fixed on the inclined wedging surface 45, the first pressing cavity 109 includes a first pressing inclined surface 110, the core pulling molding block 4 is located between the first pressing portion 23 and the mold core 217, the pressing portion 23 is arranged in the first pressing cavity 109, and the wedging block is attached to the first pressing inclined surface 110, the core pulling molding block 4 can be pressed between the pressing portion 23 and the mold core 217 due to the structural arrangement, and after mold closing, walking under the condition that the mold cavity has pressure is avoided.
In this embodiment, a groove 204 and a through groove 205 are formed in the second module 201, a mold core 217 block is fixed in the groove 204, the mold core 217 is arranged on the mold core 217 block, an indent is formed in the mold core 217 block, the indent and the through groove 205 are spliced to form a sliding channel 219, a first core frame body 1 is fixed at an end opening of the sliding channel 219, and the first translation driving device 6 is installed on the first core frame body 1; the core-pulling slide block 2 is fixed with a second core-pulling frame body 5, the second translation driving device 8 is installed on the second core-pulling frame body 5, the inverted buckle forming core-pulling mechanism 300 is matched with a mold, and the use performance of the mold is improved.
Example 2
The forming die for facilitating the back-off forming and the demolding described in this embodiment has a structure similar to that of embodiment 1, but differs from embodiment 1 in that at least one driving part 108 is provided instead of three driving parts 108, and at least one side hole forming block 207 is provided instead of three side hole forming blocks 207; the three driving portions 108 each include a lateral hole forming portion 209 and a lateral hole forming block 207 each include a lateral hole forming portion 106 and a lateral hole guide 212, and the three lateral guide holes 106 are respectively matched with the lateral hole guide portions 212. The number of the side hole forming blocks is three, so that the side hole forming blocks 207 can be manufactured to meet the specification of a product, and the side hole forming blocks 207 can be driven to move backwards when the mold is opened and can be driven to move forwards when the mold is closed.
Preferably, the three driving portions 108 further include second pressing cavities 105 communicated with the forming cavities 104, the three guide pillars 106 are respectively located beside the respective second pressing cavities 105, the three second pressing cavities 105 include three second pressing slopes 107, the three side hole forming blocks 207 further include third pressing slopes 220 located on the side hole forming portions 209, the three side hole forming portions 209 are respectively disposed in the respective second pressing cavities 105, and the second pressing slopes 107 are attached to the third pressing slopes 220. The structure of the side hole forming device enables the side hole forming block 207 to be pressed and kept stable after die assembly, and walking is avoided under the condition that a die cavity has pressure. Wherein the inclined guide post 106 is a T-shaped inclined guide post 106, a pressing block is fixed in the second pressing cavity 105 through a bolt, and the T-shaped inclined guide post 106 is positioned in an inclined T-shaped hole of the pressing block to fix the inclined guide post 106.
Preferably, the second module 201 is provided with three sliding grooves 208, and the three side hole forming blocks 207 are respectively arranged in the sliding grooves 208; a locating plate 211 is fixed at the outer end of a sliding groove 208, a through hole is formed in the locating plate 211, a guide rod 215 is arranged in the through hole in a penetrating mode, one end of the guide rod 215 is fixed with a side hole forming block 207, a spring 212 is sleeved at the other end of the guide rod 215, two ends of the spring 212 are respectively abutted to a limiting block at the other end of the guide rod 215 and the locating plate 211, and the auxiliary side hole forming block 207 is retracted.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (10)
1. A forming die convenient to back-off molding and drawing of patterns, includes first forming die (100) and second forming die (200), its characterized in that:
the first forming die (100) sequentially comprises a first fixing plate (101) and a first die block (102) from top to bottom, the first die block (102) is fixed on the first fixing plate (101), and the first die block (102) comprises a forming cavity (104) and at least one driving part (108); the second forming die (200) sequentially comprises a second module (201), foot blocks (202) and a second fixing plate (203) from top to bottom, the foot blocks (202) are respectively fixedly connected with the second module (201) and the second fixing plate (203), a sliding channel (219) and a die core (217) corresponding to the forming cavity (104) are arranged on the second module (201), the die core (217) is arranged in the forming cavity (104), an inverted buckle forming core-pulling mechanism (300) and a side hole forming core-pulling mechanism are arranged beside the die core (217), the side hole forming core-pulling mechanism comprises at least one side hole forming block (207) which is arranged on the second module (201) in a sliding mode, and a driving part (108) is matched with the side hole forming block (207) to drive the forming block (207) to translate or retreat and translate towards the direction of the die core (217);
the back-off forming core-pulling mechanism (300) comprises a first translation driving device (6) and a core-pulling sliding block (2), wherein the core-pulling sliding block (2) is arranged in a sliding channel (219) in a sliding mode, and the first translation driving device (6) is connected with the core-pulling sliding block (2); the core pulling sliding block (2) comprises a sliding channel (21), a sliding block (3) is arranged in the sliding channel (21) in a sliding mode, the sliding block (3) comprises a first guide inclined plane (31), the first guide inclined plane (31) is provided with a core pulling forming block (4) in a sliding mode, a second guide inclined plane (41) is arranged on the lower side surface of the core pulling forming block (4), the first guide inclined plane (31) is matched with the second guide inclined plane (41) in an attaching mode, the first guide inclined plane (31) comprises a first guide part (32), the second guide inclined plane (41) comprises a second guide part (42), and the first guide part (32) is matched with the second guide part (42); in the horizontal sliding process of the sliding block (3), the core-pulling forming block (4) slides along the first guide inclined plane (31) to make the core-pulling forming block perform lifting action; the top surface of the core-pulling forming block (4) is provided with a forming part (44) for forming an inner wall depression (441), and the front side surface of the core-pulling forming block (4) is abutted against the mold core (217);
a second translation driving device (8) for driving the sliding block (3) to translate is mounted on the core-pulling sliding block (2), and the first translation driving device (6) is connected with the sliding block (3).
2. The core pulling structure for the inner wall depression (441) on the molded product according to claim 1, wherein the core pulling molding block (4) comprises a positioning part (45), the positioning part (45) is located between the first guiding inclined plane (31) and the upper inner wall of the sliding channel (21), and the second guiding inclined plane (41) is located at the bottom surface of the positioning part (45);
the forming part (44) comprises a recess (441) and two protrusions (442), and the two protrusions (442) are respectively positioned at two ends of the horizontal inner wall of the recess (441).
3. The core pulling structure for the inner wall depression (441) on the molded product as claimed in claim 1, wherein the first guiding slope (31) further comprises a third guiding portion (33), the second guiding slope (41) further comprises a fourth guiding portion (43), and the third guiding portion (33) is in sliding fit with the fourth guiding portion (43); the third guide part (33) comprises a second guide channel (331), and the fourth guide part (43) comprises a second guide block (431); the second guide block (431) is correspondingly embedded in the second guide channel (331).
4. The core pulling structure for the inner wall depression (441) on the molded product as set forth in claim 3, wherein the first guide part (32) comprises a first guide channel (321) having a dovetail-shaped cross section, the second guide part (42) comprises a first guide block (421) having a dovetail-shaped cross section, or the first guide part (32) comprises a first guide block (421) having a dovetail-shaped cross section, and the second guide part (42) comprises a first guide channel (321) having a dovetail-shaped cross section;
the first guide block (421) is correspondingly embedded in the first guide channel (321).
5. The core pulling structure for the inner wall depression (441) on the molded product according to claim 1, wherein a sliding guide groove (11) is arranged on the inner wall of the first core pulling frame body (1), a sliding guide block (22) is arranged on the outer wall of the core pulling slide block (2), and the sliding guide block (22) is correspondingly embedded into the sliding guide groove (11).
6. The core pulling structure for the inner wall depression (441) on the molded product according to any one of claims 1 to 5, wherein the inner wall of the sliding channel (21) is provided with a fifth guide part (212), and the sliding block (3) is provided with a sixth guide part (34) matched with the fifth guide part (212); the fifth guide part (212) comprises a third guide channel (213) with a dovetail-shaped cross section, the sixth guide part (34) comprises a third guide block (341) with a dovetail-shaped cross section, or the fifth guide part (212) comprises a third guide block (341) with a dovetail-shaped cross section, and the sixth guide part (34) comprises a third guide channel (213) with a dovetail-shaped cross section; the third guide block (341) is correspondingly embedded in the third guide channel (213).
7. The forming die convenient to back-off forming and demoulding as claimed in claim 1, wherein a first pressing cavity (109) communicated with the forming cavity (104) is arranged on the first die block (102), the core pulling slider (2) comprises a pressing portion (23), an inclined wedging surface (45) is arranged on the pressing portion (23), a wedging block is fixed on the inclined wedging surface (45), the first pressing cavity (109) comprises a first pressing inclined surface (110), the core pulling forming block (4) is located between the first pressing portion (23) and the die core (217), the pressing portion (23) is arranged in the first pressing cavity (109), and the wedging block is attached to the first pressing inclined surface (110).
8. The molding die facilitating the reverse-snap molding and the demolding as claimed in claim 1 or 7, wherein the at least one driving portion (108) is provided instead of three driving portions (108), and the at least one side hole molding block (207) is provided instead of three side hole molding blocks (207);
the three driving parts (108) comprise inclined guide columns (106), the three side hole forming blocks (207) comprise side hole forming parts (209) and inclined guide holes (212), and the three inclined guide columns (106) are matched with the three inclined guide holes (212) respectively.
9. The forming die convenient to back-off forming and demolding is characterized in that each of the three driving portions (108) further comprises a second pressing cavity (105) communicated with the forming cavity (104), the three inclined guide pillars (106) are respectively located beside each second pressing cavity (105), each of the three second pressing cavities (105) comprises three second pressing inclined surfaces (107), each of the three side hole forming blocks (207) further comprises a third pressing inclined surface (220) located on each side hole forming portion (209), each of the three side hole forming portions (209) is respectively arranged in each of the second pressing cavities (105), and the second pressing inclined surfaces (107) are attached to the third pressing inclined surfaces (220).
10. The forming die convenient for back-off forming and demoulding as claimed in claims 1-5, 7, 9, wherein the second die block (201) is provided with a groove (204) and a through groove (205), a die core (217) block is fixed in the groove (204), the die core (217) is arranged on the die core (217) block, the die core (217) block is provided with an indent, the indent and the through groove (205) are spliced to form a sliding channel (219), a first core frame body (1) is fixed at a port of the sliding channel (219), and the first translation driving device (6) is mounted on the first core frame body (1); a second core-pulling frame body (5) is fixed on the core-pulling slide block (2), and a second translation driving device (8) is installed on the second core-pulling frame body (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210066294.2A CN114393794B (en) | 2022-01-20 | 2022-01-20 | Forming die convenient to back-off shaping and drawing of patterns |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210066294.2A CN114393794B (en) | 2022-01-20 | 2022-01-20 | Forming die convenient to back-off shaping and drawing of patterns |
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| CN114393794B CN114393794B (en) | 2024-03-22 |
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|---|---|
| CN114393794B (en) | 2024-03-22 |
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