Precise injection mold for internal parting type automobile bumper

Abstract

The utility model provides an internal parting type precise injection mold for an automobile bumper, and belongs to the technical field of molds. The die comprises an upper die plate and a lower die plate, a forming cavity is formed between the upper die plate and the lower die plate, a forming insert with a lower forming surface forming the forming cavity is arranged on the lower die plate, and arc-shaped parting surfaces are symmetrically arranged on the left side and the right side of the forming insert. After the bumper is subjected to injection molding, a product can be ejected out in two sections through the sectional type ejection mechanism, so that the product is prevented from being damaged during ejection, specifically, the lower ejection plate is moved upwards firstly, the lower ejection plate can drive a large-area straight ejection structure and a parting surface inward-drawing type inclined ejection structure in the primary ejection assembly to act, and therefore the product is prevented from being damaged during ejection. The large-area straight ejection structure can integrally eject out a product, and the parting surface inward-pulling type inclined ejection structure can achieve inward pulling action during action so that the arc parting surface of the lower mold plate can be separated from the product.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an internal parting precision injection mold for an automobile bumper. Background Art

[0002] Automobile bumpers are generally injection molded. During the injection molding process, there are arc-shaped parting surfaces and vertical parting surfaces on the left and right sides and the front and rear sides of the bumper, and the area is large. When ejecting, directly ejecting the product can easily cause damage to the product.

[0003] For example, a Chinese patent discloses an automobile bumper mold [application number: 201611146188.6], which includes a movable mold group and a fixed mold group. The fixed mold group includes a push plate, a fixed mold group, a hot runner frame plate, and a fixed mold base plate arranged from bottom to top. The movable mold group includes a movable mold group, a movable mold base plate, and a push rod, a nitrogen spring, a push rod connecting pipe, and a support column arranged thereon. The fixed mold group and the movable mold group are provided with a first slider at the left connection, and a hydraulic cylinder is provided at the right connection between the fixed mold group and the movable mold base plate. A square guide column is provided above the hydraulic cylinder. The hydraulic cylinder drives the second slider. A limiting column is provided on the right side of the nitrogen spring, and a push rod is provided on the left side of the nitrogen spring. Utility Model Content

[0004] The purpose of the utility model is to provide an internal parting automobile bumper precision injection mold in view of the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A precision injection mold for an internally parted automobile bumper comprises an upper template and a lower template, a molding cavity is provided between the upper and lower templates, a molding insert having a lower molding surface constituting the molding cavity is provided on the lower template, arc-shaped parting surfaces are symmetrically provided on the left and right sides of the molding insert, and vertical parting surfaces are provided on the front and rear sides of the molding insert. A segmented ejection mechanism is also provided on the lower template, and the segmented ejection mechanism comprises a primary ejection assembly and a secondary ejection assembly, the primary ejection assembly comprises a large-area straight top structure, two parting surface inner-drawing inclined top structures arranged on both sides of the large-area straight top structure, and a lower ejector plate connected to the large-area straight top structure and the parting surface inner-drawing inclined top structure, the secondary ejection assembly comprises a combined straight inclined top structure, an inner core-pulling ejection structure arranged on the front side of the molding insert, and an upper top plate connected to the combined straight inclined top structure and the inner core-pulling ejection structure, the upper top plate is arranged on the upper side of the lower top plate and rises synchronously with the lower top plate when the lower top plate moves upward.

[0007] In the above-mentioned precision injection mold for the internally-parted automobile bumper, the large-area straight top structure includes an upper top block and a lower top block, the molding insert is composed of an upper top block and a lower top block, and the lower top plate is fixedly connected to a number of No. 1 straight top rods connected to the lower top block.

[0008] In the above-mentioned precision injection mold for the inner-parting automobile bumper, the upper top block and the lower top block are detachably connected by a plurality of screws.

[0009] In the above-mentioned internally parted automobile bumper precision injection mold, the parting surface inner-drawn inclined roof structure includes two side inclined roof blocks, the arc-shaped parting surface is formed on the outer surface of the side inclined roof block, the inner end surface of the side inclined roof block is against the lower roof block, the top of the side inclined roof block is against the bottom of the upper roof block, and the side inclined roof block is rotatably connected to the lower roof plate through a number of No. 1 inclined roof rods.

[0010] In the above-mentioned internal parting automobile bumper precision injection mold, the combined straight inclined roof structure includes a plurality of secondary inclined roof blocks and secondary straight roof blocks arranged on the molding insert, and the secondary inclined roof blocks and secondary straight roof blocks are respectively connected to the upper roof plate through the No. 2 inclined roof rod and the No. 2 straight roof rod.

[0011] In the above-mentioned precision injection mold for the internally-parted automobile bumper, the internal core-pulling ejection structure includes a front straight ejector block and an internally-pulling inclined ejector block. The front straight ejector block is located outside the internally-pulling inclined ejector block, and a plurality of core rods that horizontally penetrate the front straight ejector block are fixedly connected to the outer end surface of the internally-pulling inclined ejector block.

[0012] In the above-mentioned precision injection mold for the internally-parted automobile bumper, the front straight ejector block is connected to the upper ejector plate via two No. 3 straight ejector rods, and the internally-drawn inclined ejector block is rotatably connected to the upper ejector plate via two No. 3 inclined ejector rods, and the No. 3 inclined ejector rods are inclined toward one side close to the center of the molding insert.

[0013] In the above-mentioned precision injection mold for the internally-parted automobile bumper, a first lifting assembly is provided between the lower template and the lower top plate, and a second lifting assembly is provided between the lower top plate and the upper top plate.

[0014] In the above-mentioned internal parting automobile bumper precision injection mold, the No. 1 lifting component includes four No. 1 lifting drivers fixed on the lower template, and the output shaft end of the No. 1 lifting driver is connected to the lower top plate through the No. 1 connecting block.

[0015] In the above-mentioned precision injection mold for the internally-parted automobile bumper, the No. 2 lifting assembly includes four No. 2 lifting actuators fixed on the upper top plate, and the output shaft end of the No. 2 lifting actuator is connected to the lower top plate through the No. 2 connecting block.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] 1. After the bumper is injection molded, the product can be ejected in two stages through a segmented ejection mechanism to prevent the product from being damaged during ejection. The specific ejection action is to first move the lower ejector plate upward. The lower ejector plate can drive the large-area straight ejector structure and the parting surface inner-drawing inclined ejector structure in the primary ejector assembly to move. The large-area straight ejector structure can eject the product as a whole. The parting surface inner-drawing inclined ejector structure can achieve an inner-drawing action when in action to separate the arc-shaped parting surface of the lower template from the product. While the lower ejector plate moves, the upper ejector plate and the secondary ejector assembly move upward synchronously with the lower ejector plate. The secondary ejector assembly and the primary ejector assembly remain relatively stationary. After completing the overall ejection of the product in the first stage, the upper ejector plate is moved upward again. The second stage of thrust is applied to the product through the combined straight and inclined ejector structure and the inner core-pulling ejector structure to separate the product from the large-area straight ejector structure.

[0018] 2. When the lower ejector plate moves upward, it can drive several No. 1 straight ejectors to drive the upper ejector block and the lower ejector block to move upward, so that the product can be ejected from the lower template as a whole. At this time, the product and the upper ejector block remain connected. When the lower ejector plate moves upward, it can drive the side inclined ejector block to move obliquely upward through several No. 1 inclined ejectors. The oblique upward movement of the side inclined ejector block can gradually separate the arc parting surface from the side inclined ejector block to prevent the side of the product from being damaged during ejection.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall structure of the lower template;

[0022] Figure 3 It is a cross-sectional view of the lower template;

[0023] Figure 4 It is a structural diagram of the lower template;

[0024] Figure 5 It is a schematic diagram of the local structure of the lower template.

[0025] In the figure, the upper template 1, the lower template 2, the lower molding surface 3, the molding insert 4, the arc parting surface 5, the vertical parting surface 6, the segmented ejection mechanism 7, the large-area straight top structure 8, the parting surface inner-drawing inclined top structure 9, the lower ejector plate 10, the combined straight inclined top structure 11, the inner core-pulling ejection structure 12, the upper ejector plate 13, the upper ejector block 14, the lower ejector block 15, the No. 1 straight ejector rod 16, the side inclined ejector block 17, the No. 1 inclined ejector rod 18, the secondary inclined ejector block 19, the secondary straight ejector block 20, the No. 2 inclined ejector rod 21, the No. 2 straight ejector rod 22, the front side straight ejector block 23, the inner-drawing inclined ejector block 24, the core rod 25, the No. 3 straight ejector rod 26, the No. 3 inclined ejector rod 27, the No. 1 lifting assembly 28, the No. 2 lifting assembly 29, the No. 1 lifting driver 30, the No. 1 connecting block 31, the No. 2 lifting driver 32, and the No. 2 connecting block 33. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5 As shown, a precision injection mold for an internally parted automobile bumper comprises an upper template 1 and a lower template 2, a molding cavity is provided between the upper template 1 and the lower template 2, a molding insert 4 having a lower molding surface 3 constituting the molding cavity is provided on the lower template 2, arc-shaped parting surfaces 5 are symmetrically provided on the left and right sides of the molding insert 4, and vertical parting surfaces 6 are provided on the front and rear sides of the molding insert 4. A segmented ejection mechanism 7 is further provided on the lower template 2, and the segmented ejection mechanism 7 includes a primary ejection component and a secondary ejection component. The primary ejection component includes a large The large-area straight top structure 8, two inner-drawn inclined top structures 9 arranged on both sides of the parting surface of the large-area straight top structure 8, and a lower top plate 10 connected to the large-area straight top structure 8 and the inner-drawn inclined top structure 9 on the parting surface, the secondary ejection assembly includes a combined straight inclined top structure 11, an inner core-pulling ejection structure 12 arranged on the front side of the molding insert 4, and an upper top plate 13 connected to the combined straight inclined top structure 11 and the inner core-pulling ejection structure 12. The upper top plate 13 is arranged on the upper side of the lower top plate 10 and rises synchronously with the lower top plate 10 when the lower top plate 10 moves upward.

[0027] In the utility model, after the bumper is injection molded, the product can be ejected in two stages by the segmented ejection mechanism 7 to prevent the product from being damaged during ejection. The specific ejection action is to first move the lower ejector plate upward, and the lower ejector plate can drive the large-area straight ejector structure 8 and the parting surface inner-drawing inclined ejector structure 9 in the primary ejection component to move. The large-area straight ejector structure can eject the product as a whole. The parting surface inner-drawing inclined ejector structure 9 can realize the inner-drawing action when it moves to separate the arc-shaped parting surface of the lower template from the product. While the lower ejector plate moves, the upper ejector plate and the secondary ejection component move upward synchronously with the lower ejector plate, and the secondary ejection component and the primary ejection component remain relatively stationary. After completing the overall ejection of the product in the first stage, the upper ejector plate is moved upward again, and the second-stage thrust is applied to the product by the combined straight and inclined ejector structure 11 and the inner core-pulling ejector structure 12 to separate the product from the large-area straight ejector structure 8.

[0028] Specifically, the large-area straight-top structure 8 includes an upper ejector block 14 and a lower ejector block 15. The molding insert 4 is composed of the upper ejector block 14 and the lower ejector block 15. The lower ejector plate 10 is fixedly connected to a plurality of first-numbered straight ejector rods 16 connected to the lower ejector block 15. When the lower ejector plate moves upward, the first-numbered straight ejector rods 16 drive the upper and lower ejector blocks 14, 15 upward, thereby ejecting the product from the lower mold plate as a whole. At this time, the product remains connected to the upper ejector block.

[0029] Preferably, the upper top block 14 and the lower top block 15 are detachably connected by a plurality of screws.

[0030] Specifically, the parting surface inner-drawable inclined ejector structure 9 includes two side inclined ejector blocks 17. The arc-shaped parting surface 5 is formed on the outer surface of the side inclined ejector blocks 17. The inner end surface of the side inclined ejector blocks 17 abuts against the lower ejector block 15, and the top of the side inclined ejector blocks 17 abuts against the bottom of the upper ejector block 14. The side inclined ejector blocks 17 are rotatably connected to the lower ejector plate 10 via a plurality of No. 1 inclined ejector rods 18. When the lower ejector plate 10 moves upward, the No. 1 inclined ejector rods 18 drive the side inclined ejector blocks 17 to move diagonally upward. The diagonal upward movement of the side inclined ejector blocks can gradually separate the arc-shaped parting surface from the side inclined ejector blocks, thereby preventing damage to the side of the product during ejection.

[0031] Specifically, the combined straight-sloped roof structure 11 includes a plurality of secondary inclined roof blocks 19 and secondary straight roof blocks 20 disposed on the forming insert 4. The secondary inclined roof blocks 19 and secondary straight roof blocks 20 are connected to the upper roof plate 13 via the second inclined roof rods 21 and the second straight roof rods 22, respectively. When the lower template moves upward, the upper and lower roof plates move upward synchronously, and the combined straight-sloped roof structure 11 connected to the upper roof plate also moves upward synchronously with the forming insert. The relative positions of the combined straight-sloped roof structure 11 and the forming insert remain unchanged. After the product is ejected as a whole, the upward movement of the upper roof plate can drive the secondary inclined roof blocks 19 and the secondary straight roof blocks 20 to move via the second inclined roof rods 21 and the second straight roof rods 22, exerting a thrust on the product, thereby ejecting the product from the forming insert and separating the product from the forming insert.

[0032] Specifically, the inner core-pulling ejection structure 12 includes a front straight ejector block 23 and an inner pull-out inclined ejector block 24. The front straight ejector block 23 is located outside the inner pull-out inclined ejector block 24. A plurality of core rods 25 are fixedly connected to the outer end surface of the inner pull-out inclined ejector block 24 and horizontally penetrate the front straight ejector block 23. The front straight ejector block 23 is connected to the upper ejector plate 13 through two No. 3 straight ejector rods 26. The inner pull-out inclined ejector block 24 is rotatably connected to the upper ejector plate 13 through two No. 3 inclined ejector rods 27. The No. 3 inclined ejector rods 27 are inclined toward the side close to the center of the forming insert 4. When the upper top plate moves upward, the two No. 3 straight push rods 26 can drive the front straight push block 23 to move upward to apply a vertical upward thrust to the product. The two No. 3 inclined push rods 27 can also drive the inner-pull-out inclined push block 24 to move obliquely upward to apply an oblique upward thrust to the product. When the inner-pull-out inclined push block 24 moves obliquely upward, it can drive the core rod to produce horizontal displacement, thereby enabling the core rod to be separated from the product.

[0033] Specifically, a No. 1 lifting assembly 28 is provided between the lower template 2 and the lower top plate 10, and a No. 2 lifting assembly 29 is provided between the lower top plate 10 and the upper top plate 13. The No. 1 lifting assembly can drive the lower top plate and the upper top plate on the lower top plate to rise and fall synchronously, and the No. 2 lifting assembly can drive the upper top plate to rise and fall in the vertical direction.

[0034] Specifically, the No. 1 lifting assembly 28 includes four No. 1 lifting actuators 30 fixed to the lower mold plate 2. The output shaft ends of the No. 1 lifting actuators 30 are connected to the lower top plate 10 through No. 1 connecting blocks 31. The No. 1 lifting actuators can drive the lower top plate to rise and fall in the vertical direction through the No. 1 connecting blocks.

[0035] Those skilled in the art should understand that the No. 1 lifting actuator may be an oil cylinder, an air cylinder or a linear motor, etc.

[0036] The second lifting assembly 29 includes four second lifting actuators 32 fixed to the upper top plate 13. The output shaft ends of the second lifting actuators 32 are connected to the lower top plate 10 through the second connecting blocks 33. The second lifting actuators 32 can drive the upper top plate to move up and down in the vertical direction through the second connecting blocks.

[0037] Those skilled in the art should understand that the No. 1 lifting actuator may be an oil cylinder, an air cylinder or a linear motor, etc.

[0038] The working principle of the utility model is as follows: after the bumper is injection molded, the product can be ejected in two stages through the segmented ejection mechanism 7 to prevent the product from being damaged during ejection. The specific ejection action is to first move the lower ejector plate upward, and the lower ejector plate can drive the large-area straight ejector structure 8 and the parting surface inner-drawing inclined ejector structure 9 in the primary ejection assembly to move. The large-area straight ejector structure can eject the product as a whole. The parting surface inner-drawing inclined ejector structure 9 can realize an inner-drawing action when it moves, so that the arc-shaped parting surface of the lower template is separated from the product. While the lower ejector plate moves, the upper ejector plate and the secondary ejection assembly move upward synchronously with the lower ejector plate, and the secondary ejection assembly and the primary ejection assembly remain relatively stationary. After completing the overall ejection of the product in the first stage, the upper ejector plate is moved upward again, and the second-stage thrust is applied to the product through the combined straight and inclined ejector structure 11 and the inner core-pulling ejector structure 12 to separate the product from the large-area straight ejector structure 8.

[0039] When the lower top plate moves upward, it can drive several No. 1 straight ejector rods 16 to drive the upper ejector block 14 and the lower ejector block 15 to move upward, so that the product can be ejected from the lower template as a whole. At this time, the product and the upper ejector block are still connected. When the lower top plate 10 moves upward, it can drive the side inclined ejector block 17 to move obliquely upward through several No. 1 inclined ejector rods 18. The oblique upward movement of the side inclined ejector block can gradually separate the arc parting surface from the side inclined ejector block to prevent the side of the product from being damaged during ejection. When the lower template moves upward, the upper top plate and the lower top plate move upward synchronously, and the combined straight inclined top structure 11 connected to the upper top plate also moves upward synchronously with the forming insert. The relative position of the combined straight inclined top structure 11 and the forming insert The upper ejector plate remains unchanged. After the product is ejected as a whole, the upper ejector plate moves upward and can drive the secondary ejector block 19 and the secondary straight ejector block 20 to move through the No. 2 inclined ejector rod 21 and the No. 2 straight ejector rod 22 to apply a thrust to the product, thereby ejecting the product from the forming insert, so that the product is separated from the forming insert. When the upper ejector plate moves upward, the two No. 3 straight ejector rods 26 can drive the front straight ejector block 23 to move upward to apply a vertical upward thrust to the product. The two No. 3 inclined ejector rods 27 can also drive the inner-drawing inclined ejector block 24 to move obliquely upward to apply an oblique upward thrust to the product. When the inner-drawing inclined ejector block 24 moves obliquely upward, it can drive the core rod to produce horizontal displacement, thereby separating the core rod from the product.

[0040] The No. 1 lifting component can drive the lower top plate and the upper top plate on the lower top plate to rise and fall synchronously, the No. 2 lifting component can drive the upper top plate to rise and fall in the vertical direction, the No. 1 lifting driver can drive the lower top plate to rise and fall in the vertical direction through the No. 1 connecting block, and the No. 2 lifting driver 32 can drive the upper top plate to rise and fall in the vertical direction through the No. 2 connecting block.

[0041] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0042] Although this article uses more upper template 1, lower template 2, lower forming surface 3, forming insert 4, arc parting surface 5, vertical parting surface 6, segmented ejection mechanism 7, large area straight top structure 8, parting surface inner pull-out inclined top structure 9, lower ejector plate 10, combined straight inclined top structure 11, inner core-pulling ejection structure 12, upper ejector plate 13, upper ejector block 14, lower ejector block 15, No. 1 straight ejector rod 16, side inclined ejector block 17, No. 1 inclined ejector rod 18, secondary inclined ejector block 19, secondary straight ejector block 20, No. 2 inclined ejector rod The terms "top rod 21, No. 2 straight top rod 22, front straight top block 23, inward-drawing inclined top block 24, core rod 25, No. 3 straight top rod 26, No. 3 inclined top rod 27, No. 1 lifting assembly 28, No. 2 lifting assembly 29, No. 1 lifting drive 30, No. 1 connecting block 31, No. 2 lifting drive 32, No. 2 connecting block 33, etc., are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. An internal parting automobile bumper precision injection mold, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: A molding cavity is provided between the upper mold plate (1) and the lower mold plate (2), a molding insert (4) having a lower molding surface (3) constituting the molding cavity is provided on the lower mold plate (2), arc-shaped parting surfaces (5) are symmetrically provided on the left and right sides of the molding insert (4), and vertical parting surfaces (6) are provided on the front and rear sides of the molding insert (4), and a segmented ejection mechanism (7) is further provided on the lower mold plate (2), the segmented ejection mechanism (7) includes a primary ejection assembly and a secondary ejection assembly, the primary ejection assembly includes a large-area straight top structure (8), two sets of The invention relates to a mold structure (8) comprising an inner-drawn inclined top structure (9) on both sides of the parting surface and a lower top plate (10) connected to the large-area straight top structure (8) and the inner-drawn inclined top structure (9) on the parting surface, the secondary ejection assembly comprising a combined straight inclined top structure (11), an inner core-pulling ejection structure (12) arranged on the front side of the forming insert (4), and an upper top plate (13) connected to the combined straight inclined top structure (11) and the inner core-pulling ejection structure (12), the upper top plate (13) being arranged on the upper side of the lower top plate (10) and rising synchronously with the lower top plate (10) when the lower top plate (10) moves upward.

2. The internal parting automobile bumper precision injection mold according to claim 1, characterized in that: The large-area straight top structure (8) includes an upper top block (14) and a lower top block (15), the forming insert (4) is composed of the upper top block (14) and the lower top block (15), and the lower top plate (10) is fixedly connected with a plurality of No. 1 straight top rods (16) connected to the lower top block (15).

3. The internal parting automobile bumper precision injection mold according to claim 2, characterized in that: The upper top block (14) and the lower top block (15) are detachably connected via a plurality of screws.

4. The internal parting automobile bumper precision injection mold according to claim 2, characterized in that: The parting surface inner-drawn inclined top structure (9) includes two side inclined top blocks (17), the arc-shaped parting surface (5) is formed on the outer surface of the side inclined top block (17), the inner end surface of the side inclined top block (17) is against the lower top block (15), the top end of the side inclined top block (17) is against the bottom of the upper top block (14), and the side inclined top block (17) is rotatably connected to the lower top plate (10) through a plurality of No. 1 inclined top rods (18).

5. The internal parting automobile bumper precision injection mold according to claim 4, characterized in that: The combined straight inclined roof structure (11) comprises a plurality of secondary inclined roof blocks (19) and secondary straight roof blocks (20) arranged on the forming insert (4), wherein the secondary inclined roof blocks (19) and secondary straight roof blocks (20) are connected to the upper roof plate (13) via a second inclined roof rod (21) and a second straight roof rod (22), respectively.

6. The internal parting automobile bumper precision injection mold according to claim 5, characterized in that: The inner core-pulling ejection structure (12) comprises a front straight ejection block (23) and an inner pull-out inclined ejection block (24), wherein the front straight ejection block (23) is located outside the inner pull-out inclined ejection block (24), and a plurality of core rods (25) are fixedly connected to the outer end surface of the inner pull-out inclined ejection block (24) and horizontally penetrate the front straight ejection block (23).

7. The internal parting automobile bumper precision injection mold according to claim 6, characterized in that: The front straight ejector block (23) is connected to the upper ejector plate (13) via two No. 3 straight ejector rods (26), and the inner-drawn inclined ejector block (24) is rotatably connected to the upper ejector plate (13) via two No. 3 inclined ejector rods (27), and the No. 3 inclined ejector rods (27) are inclined toward one side near the center of the forming insert (4).

8. The internal parting automobile bumper precision injection mold according to claim 7, characterized in that: A first lifting assembly (28) is provided between the lower template (2) and the lower top plate (10), and a second lifting assembly (29) is provided between the lower top plate (10) and the upper top plate (13).

9. The internal parting automobile bumper precision injection mold according to claim 8, characterized in that: The No. 1 lifting assembly (28) includes four No. 1 lifting drivers (30) fixed on the lower template (2), and the output shaft end of the No. 1 lifting driver (30) is connected to the lower top plate (10) through a No. 1 connecting block (31).

10. The internal parting automobile bumper precision injection mold according to claim 8, characterized in that: The No. 2 lifting assembly (29) includes four No. 2 lifting drivers (32) fixed on the upper top plate (13), and the output shaft end of the No. 2 lifting driver (32) is connected to the lower top plate (10) through a No. 2 connecting block (33).

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