CN211917619U

CN211917619U - Forming die of doorsill plaque behind car

Info

Publication number: CN211917619U
Application number: CN202020425449.3U
Authority: CN
Inventors: 周为能
Original assignee: Ningbo Qingshanqing Auto Parts Co ltd
Current assignee: Ningbo Qingshanqing Auto Parts Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-11-13
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a forming die of a rear doorsill trim panel of an automobile, wherein an ejection mechanism comprises a primary ejection mechanism for ejecting reinforcing ribs on the inner surface of the rear doorsill trim panel of the automobile and a secondary ejection mechanism for ejecting the whole formed product; the primary ejection mechanism is positioned below the secondary ejection mechanism, and a locking device for preventing disengagement during die assembly is arranged between the primary ejection mechanism and the secondary ejection mechanism. By adopting the forming die, the quality defect caused by ejection acting force can be avoided through the die.

Description

Forming die of doorsill plaque behind car

Technical Field

The utility model relates to a forming die technical field specifically says a forming die of threshold plaque behind car.

Background

An automobile rocker trim is generally used to protect a rocker beam of a vehicle. Automotive rocker trims are typically injection molded from plastic, have a concave cavity in the middle, and are mounted to the rocker beam by snap-fit features on the top. In the prior art, most of the injection molding is completed by adopting a molding die, and after the injection is completed, an ejection mechanism in the molding die ejects a product. The existing forming die has the following defects:

because the length of the push-out mechanism is long, the inner surface of the push-out mechanism is provided with a plurality of reinforcing ribs, the edges of the push-out mechanism are provided with a plurality of buckles, and the height direction of the push-out mechanism is also large in size, the acting force exerted on the push-out rod by the push-out mechanism is the same, namely the push-out acting force of each part of the automobile threshold trim is consistent, and because the push-out stroke of the push-out mechanism is long, different parts of the automobile threshold trim react differently under the push-out acting force, and some weak parts deform, so that the quality defect of a molded product is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a forming die of threshold plaque behind car that can avoid producing because of ejecting effort through the mould is provided.

In order to solve the technical problem, the utility model provides a forming die of a rear doorsill plaque of an automobile, which comprises an upper die and a lower die, wherein the upper die and the lower die form a product cavity after die assembly, and a demoulding device and an ejection mechanism are arranged between the upper die and the lower die; the method is characterized in that: the forming die is a die with one die and two dies, and the product die cavities are two connected die cavities; the demolding device comprises a plurality of back-off demolding mechanisms for demolding the buckles in the rear doorsill trim panel of the automobile, and each ejection mechanism comprises a primary ejection mechanism for ejecting reinforcing ribs on the inner surface of the rear doorsill trim panel of the automobile and a secondary ejection mechanism for ejecting the whole molded product; the primary ejection mechanism is positioned below the secondary ejection mechanism, and a locking device for preventing disengagement during die assembly is arranged between the primary ejection mechanism and the secondary ejection mechanism.

The main sprue in the forming die is located between two product cavities, a multi-section auxiliary pouring gate is arranged at the periphery of each product cavity and in the die between the two product cavities, each section of auxiliary pouring gate is communicated with the product cavities through a branch pouring gate, and each section of auxiliary pouring gate is communicated with the main pouring gate.

The primary ejection mechanism comprises a primary ejection plate, and the primary ejection plate is provided with first lugs at four corners; the secondary ejection mechanism comprises a secondary top plate, and the secondary top plate is provided with second lugs at four corners; the second lug is positioned above the first lug; the number of the locking devices is four, and the four locking devices are respectively positioned at the outer sides of the first lug and the second lug.

The secondary ejection mechanism also comprises a guide device, and the guide device comprises a guide rod, a guide sleeve and a guide rod connector; the front end of the second lug is provided with an open slot, the inner side wall of the open slot is provided with a clamping strip along the horizontal direction of the slot wall, the guide rod connector is fixedly connected to the lower end of the guide rod and clamped in the open slot, and the outer circumferential wall of the guide rod connector is provided with an inward concave annular groove matched with the clamping strip; the upper end of the guide rod is connected in the guide sleeve in a sliding manner, and the guide sleeve is fixedly connected to the side wall of the lower die core.

The locking device comprises a connecting seat, a locking plate, a limiting plate and an electromagnet; a second groove is formed in the outer side wall of the second lug, and the upper end of the connecting seat is fixedly connected into the second groove; the upper end of the locking plate is hinged to the upper end of the connecting seat, and the lower end of the locking plate is provided with a bolt; the outer side wall of the first lug is provided with a first groove, the limiting plate is fixedly connected in the first groove, and the part of the limiting plate extending out of the outer side wall of the first lug is locked or unlocked with a lock tongue at the lower end of the locking plate; the electromagnet is horizontally arranged between the locking plate and the connecting seat, one end of the electromagnet is fixedly connected to the side wall of the connecting seat and is electrically connected with an external power supply, and the other end of the electromagnet is tightly sucked with the side wall of the locking plate when being electrified and is separated from the side wall of the locking plate when not being electrified.

The back-off demoulding mechanism comprises a back-off inclined top, an inclined rod and a sliding block assembly, wherein the side surface of the back-off inclined top is a back-off forming surface, the upper end of the inclined rod is connected with the back-off inclined top, the lower end of the inclined rod is connected with the sliding block assembly, the inclined rod is connected in the lower die assembly in a sliding manner, and the sliding block assembly is installed in the lower die assembly.

The sliding block component comprises two pressing blocks, a connecting block, two sliding blocks and two rotating pins; an inclined sliding groove is formed in the wall surface of one side, opposite to each pressing block, and the two sliding blocks are respectively connected in the sliding grooves of the two pressing blocks in a sliding mode; the connecting block is located between the two sliding blocks, two sides of the connecting block are hinged to the sliding blocks through the two rotating pins respectively, and the bottom of the inclined rod is inserted into the connecting block and limited circumferentially through the rotation stopping limiting block.

The sliding block component further comprises an upper limiting strip and a lower limiting strip which are used for limiting the stroke of the connecting block, the upper limiting strip and the lower limiting strip are horizontally arranged on two end faces of the two pressing blocks respectively, two ends of the upper limiting strip are fixedly connected to the end faces of the two pressing blocks respectively, and two ends of the lower limiting strip are fixedly connected to the end faces of the two pressing blocks respectively.

After the structure more than adopting, compared with the prior art, the utility model, have following advantage:

1) due to the adoption of the secondary ejection mechanism, the oil cylinder drives the secondary top plate to move upwards during working, the secondary top plate drives the primary top plate to move upwards together under the action of the locking device, the locking device is unlocked after the secondary top plate moves for a certain distance, and the secondary ejection mechanism is separated from the primary top plate, so that the secondary top plate continues to move upwards until a product is ejected completely; therefore, a primary ejection stroke and a secondary ejection stroke can be set according to actual conditions, a primary ejection mechanism is selected to eject the structure with the reinforcing ribs, and then the secondary ejection mechanism is used to eject the structure without the reinforcing ribs, so that the product quality after demolding is ensured after different stress of each part of the product is treated;

2) the forming die with one die and two dies greatly improves the production efficiency; moreover, the periphery of the product cavity is provided with a plurality of sections of auxiliary pouring channels and branch pouring channels communicated with the product cavity, so that the molten material can quickly reach all parts of the product cavity when the product is injected, the filling rate of the molten material in the product cavity is consistent, and the quality of a molded product is ensured;

3) in the back-off demoulding mechanism, the slide block combination at the bottom enables the up-and-down movement of the die opening to be changed into horizontal left-and-right movement, when the die opening is carried out, the back-off demoulding mechanism is firstly actuated, and after the back-off oblique top is driven by the slide block assembly to be separated from a product, the action of the large oblique top demoulding mechanism is carried out, thereby ensuring that the demoulding of each part of the product can not be interfered.

Drawings

Fig. 1 is the utility model discloses threshold plaque's behind car forming die's schematic structure view.

Fig. 2 is the utility model discloses threshold plaque's behind car forming die's schematic structure view.

Fig. 3 is a schematic structural view of the middle and lower mold cores of the present invention.

Fig. 4 is a schematic structural view of the middle upper die core of the utility model.

Fig. 5 is a schematic structural view of the middle back-off demolding mechanism of the present invention.

Fig. 6 is an enlarged structural schematic view of the slider assembly of fig. 5.

Fig. 7 is a schematic structural diagram of the locking device of the present invention.

Wherein: 1. a lower die core; 2. a main gate; 3. auxiliary pouring channels; 4. branch pouring channels; 5. reversely buckling the inclined top; 6. a diagonal bar; 7. briquetting; 8. a slider; 9. connecting blocks; 10. a rotation pin; 11. an upper limit strip; 12. a lower limit strip; 13. a chute; 14. a rotation stopping limiting block; 15. an upper die core; 16. a second lug; 17. a first lug; 18. a secondary top plate; 19. a primary roof plate; 20. a guide sleeve; 21. a guide bar; 22. clamping the strip; 23. an open slot; 24. an annular groove; 25. a guide rod connector; 26. a second groove; 27. a first groove; 28. a locking plate; 29. a connecting seat; 30. an electromagnet; 31. a latch bolt; 32. and a limiting plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As can be seen from the schematic structural diagrams of the forming mold of the rear doorsill trim panel of the automobile of the present invention shown in fig. 1 to 7, the forming mold of the rear doorsill trim panel of the automobile comprises an upper mold and a lower mold, the upper mold and the lower mold form a product cavity after mold assembly, and a demolding device and an ejection mechanism are arranged between the upper mold and the lower mold; the method is characterized in that: the forming die is a die with one die and two dies, and the product die cavities are two connected die cavities; the demolding device comprises a plurality of back-off demolding mechanisms for demolding the buckles in the rear doorsill trim panel of the automobile, and each ejection mechanism comprises a primary ejection mechanism for ejecting reinforcing ribs on the inner surface of the rear doorsill trim panel of the automobile and a secondary ejection mechanism for ejecting the whole molded product; the primary ejection mechanism is positioned below the secondary ejection mechanism, and a locking device for preventing disengagement during die assembly is arranged between the primary ejection mechanism and the secondary ejection mechanism.

The main sprue 2 in the forming die is located between two product cavities, a multi-section auxiliary pouring gate 3 is arranged at the periphery of each product cavity and in the die between the two product cavities, each section auxiliary pouring gate 3 is communicated with the product cavities through a branch pouring gate 4, and each section auxiliary pouring gate 3 is communicated with the main pouring gate.

The primary ejection mechanism includes a primary ejection plate 19, the primary ejection plate 19 having first lugs 17 at four corners; the secondary ejection mechanism includes a secondary top plate 18, the secondary top plate 18 having second lugs 16 at each of four corners; the second tab 16 is located above the first tab 17; the locking means are four and are located outside the first lug 17 and the second lug 16, respectively.

The secondary ejection mechanism further comprises a guide device, and the guide device comprises a guide rod 21, a guide sleeve 20 and a guide rod connector 25; the front end of the second lug 16 is provided with an open slot 23, a clamping strip 22 is arranged on the inner side wall of the open slot 23 along the horizontal direction of the slot wall, a guide rod connector 25 is fixedly connected to the lower end of the guide rod 21 and clamped in the open slot 23, and an inner concave annular groove 24 matched with the clamping strip 22 is arranged on the outer circumferential wall of the guide rod connector; the upper end of the guide rod 21 is slidably connected in the guide sleeve 20, and the guide sleeve 20 is fixedly connected on the side wall of the lower die core 1.

The locking device comprises a connecting seat 29, a locking plate 28, a limiting plate 32 and an electromagnet 30; a second groove 26 is arranged on the outer side wall of the second lug 16, and the upper end of the connecting seat 29 is fixedly connected in the second groove 26; the upper end of the locking plate 28 is hinged with the upper end of the connecting seat 29, and the lower end of the locking plate 28 is provided with a bolt 31; a first groove 27 is arranged on the outer side wall of the first lug 17, a limit plate 32 is fixedly connected in the first groove 27, and the part of the limit plate 32 extending out of the outer side wall of the first lug 17 is locked or unlocked with a lock tongue 31 at the lower end of the lock plate 28; the electromagnet 30 is horizontally arranged between the locking plate 28 and the connecting seat 29, one end of the electromagnet 30 is fixedly connected to the side wall of the connecting seat 29 and is electrically connected with an external power supply, and the other end of the electromagnet 30 is tightly sucked with the side wall of the locking plate 28 when being electrified and is separated from the side wall of the locking plate 28 when not being electrified.

The back-off demoulding mechanism comprises a back-off lifter 5, an inclined rod 6 and a sliding block assembly, wherein the side surface of the back-off lifter 5 is a back-off forming surface, the upper end of the inclined rod 6 is connected with the back-off lifter 5, the lower end of the inclined rod is connected with the sliding block assembly, the inclined rod 6 is connected in the lower die assembly in a sliding manner, and the sliding block assembly is installed in the lower die assembly.

The sliding block component comprises two pressing blocks 7, a connecting block 9, two sliding blocks 8 and two rotating pins 10; an inclined sliding groove 13 is formed in the wall surface of one side, opposite to each pressing block 7, of each pressing block 7, and the two sliding blocks 8 are connected in the sliding grooves 13 of the two pressing blocks 7 in a sliding mode respectively; the connecting block 9 is located between the two sliding blocks 8, two sides of the connecting block 9 are hinged to the sliding blocks 8 through the two rotating pins 10 respectively, and the bottom of the inclined rod 6 is inserted into the connecting block 9 and is circumferentially limited through the rotation stopping limiting block 14.

The sliding block component further comprises an upper limiting strip 11 and a lower limiting strip 12 which are used for limiting the stroke of the connecting block 9, the upper limiting strip 11 and the lower limiting strip 12 are horizontally arranged on two end faces of the two pressing blocks 7 respectively, two ends of the upper limiting strip 11 are fixedly connected to the end faces of the two pressing blocks 7 respectively, and two ends of the lower limiting strip 12 are fixedly connected to the end faces of the two pressing blocks 7 respectively.

In addition, the locking device can also be in other structures, which are not shown in the drawings, and the specific structures are as follows: the locking device comprises a connecting seat, a locking plate, a limiting plate and an electric push rod; a second groove is formed in the outer side wall of the second lug, and the upper end of the connecting seat is fixedly connected into the second groove; the upper end of the locking plate is hinged to the upper end of the connecting seat, and the lower end of the locking plate is provided with a bolt; the outer side wall of the first lug is provided with a first groove, the limiting plate is fixedly connected in the first groove, and the part of the limiting plate extending out of the outer side wall of the first lug is locked or unlocked with a lock tongue at the lower end of the locking plate; the electric push rod is horizontally arranged, the fixed end of the electric push rod is connected to the first lug, the movable end of the electric push rod is connected to the locking plate, and the electric push rod is electrically connected with an external power supply and is controlled by a controller of the injection molding machine. When the die is closed, the electric push rod is contracted to the shortest length, so that the lock tongue is locked with the limiting plate. When the primary ejection is carried out, the secondary top plate drives the primary top plate to move upwards for a certain stroke, the electric push rod is electrified to act, the movable end of the electric push rod pushes outwards to drive the lower end of the locking plate to be away from the direction of the die, and the electric push rod stops acting until the lock tongue is completely separated from the limiting plate; at the moment, the secondary ejection mechanism acts to eject the product. When the mold is closed, the action is reversed.

The above description is only a preferred and feasible embodiment of the present invention, and therefore, the scope of the present invention should not be limited by the above description, and various other modifications made by the technical solutions and concepts of the present invention should be included in the protection scope of the present invention.

Claims

1. A forming die of a rear doorsill trim panel of an automobile comprises an upper die and a lower die, wherein a product cavity is formed by the upper die and the lower die after the upper die and the lower die are assembled, and a demoulding device and an ejection mechanism are arranged between the upper die and the lower die; the method is characterized in that: the forming die is a die with one die and two dies, and the product die cavities are two connected die cavities; the demolding device comprises a plurality of back-off demolding mechanisms for demolding the buckles in the rear doorsill trim panel of the automobile, and each ejection mechanism comprises a primary ejection mechanism for ejecting reinforcing ribs on the inner surface of the rear doorsill trim panel of the automobile and a secondary ejection mechanism for ejecting the whole molded product; the primary ejection mechanism is positioned below the secondary ejection mechanism, and a locking device for preventing disengagement during die assembly is arranged between the primary ejection mechanism and the secondary ejection mechanism.

2. The molding die for a rear rocker trim panel for an automobile according to claim 1, wherein: the main sprue (2) in the forming die is located between two product cavities, a multi-section auxiliary pouring gate (3) is arranged at the periphery of each product cavity and in the die between the two product cavities, each section of auxiliary pouring gate (3) is communicated with the product cavities through a branch pouring gate (4), and each section of auxiliary pouring gate (3) is communicated with the main pouring gate.

3. The molding die for a rear rocker trim panel for an automobile according to claim 1, wherein: the primary ejection mechanism comprises a primary ejection plate (19), the primary ejection plate (19) having first lugs (17) at four corners; the secondary ejection mechanism comprises a secondary ejection plate (18), the secondary ejection plate (18) having second lugs (16) at four corners; the second lug (16) is located above the first lug (17); the locking devices are four and are respectively positioned at the outer sides of the first lug (17) and the second lug (16).

4. The molding die for a rear rocker trim panel for an automobile according to claim 3, wherein: the secondary ejection mechanism also comprises a guide device, and the guide device comprises a guide rod (21), a guide sleeve (20) and a guide rod connector (25); the front end of the second lug (16) is provided with an open slot (23), the inner side wall of the open slot (23) is provided with a clamping strip (22) along the horizontal direction of the slot wall, a guide rod connector (25) is fixedly connected to the lower end of the guide rod (21) and clamped in the open slot (23), and the outer circumferential wall of the guide rod connector is provided with an inward annular groove (24) matched with the clamping strip (22); the upper end of the guide rod (21) is connected in the guide sleeve (20) in a sliding manner, and the guide sleeve (20) is fixedly connected to the side wall of the lower die mold core (1).

5. The molding die for a rear rocker trim panel for an automobile according to claim 3, wherein: the locking device comprises a connecting seat (29), a locking plate (28), a limiting plate (32) and an electromagnet (30); a second groove (26) is formed in the outer side wall of the second lug (16), and the upper end of the connecting seat (29) is fixedly connected into the second groove (26); the upper end of the locking plate (28) is hinged to the upper end of the connecting seat (29), and the lower end of the locking plate (28) is provided with a bolt (31); a first groove (27) is formed in the outer side wall of the first lug (17), a limiting plate (32) is fixedly connected in the first groove (27), and the part of the limiting plate (32) extending out of the outer side wall of the first lug (17) is locked or unlocked with a locking tongue (31) at the lower end of the locking plate (28); the electromagnet (30) is horizontally arranged between the locking plate (28) and the connecting seat (29), one end of the electromagnet (30) is fixedly connected to the side wall of the connecting seat (29) and is electrically connected with an external power supply, and the other end of the electromagnet is tightly sucked with the side wall of the locking plate (28) when the electromagnet is electrified and is separated from the side wall of the locking plate (28) when the electromagnet is not electrified.

6. The molding die for a rear rocker trim panel for an automobile according to claim 1, wherein: the back-off demoulding mechanism comprises a back-off inclined top (5), an inclined rod (6) and a sliding block assembly, wherein the side surface of the back-off inclined top (5) is a back-off forming surface, the upper end of the inclined rod (6) is connected with the back-off inclined top (5), the lower end of the inclined rod is connected with the sliding block assembly, the inclined rod (6) is connected in the lower die assembly in a sliding manner, and the sliding block assembly is installed in the lower die assembly.

7. The molding die for a rear rocker trim panel for an automobile according to claim 6, wherein: the sliding block component comprises two pressing blocks (7), a connecting block (9), two sliding blocks (8) and two rotating pins (10); an inclined sliding groove (13) is formed in the wall surface of one side, opposite to each pressing block (7), of each pressing block (7), and the two sliding blocks (8) are connected in the sliding grooves (13) of the two pressing blocks (7) in a sliding mode respectively; the connecting block (9) is located between the two sliding blocks (8), two sides of the connecting block (9) are hinged to the sliding blocks (8) through the two rotating pins (10), and the bottom of the inclined rod (6) is inserted into the connecting block (9) and is circumferentially limited through the rotation stopping limiting block (14).

8. The molding die for a rear rocker trim panel for an automobile according to claim 7, wherein: the sliding block assembly further comprises an upper limiting strip (11) and a lower limiting strip (12) which are used for limiting the stroke of the connecting block (9), the upper limiting strip (11) and the lower limiting strip (12) are horizontally arranged on two end faces of the two pressing blocks (7) respectively, two ends of the upper limiting strip (11) are fixedly connected to the end faces of the two pressing blocks (7) respectively, and two ends of the lower limiting strip (12) are fixedly connected to the end faces of the two pressing blocks (7) respectively.