Core-pulling demolding mold

Abstract

The utility model discloses a core-pulling demoulding mould which comprises a mould main body, the mould main body comprises an upper mould assembly and a forming column, the mould main body is provided with a forming cavity, the forming column comprises a sleeve forming part used for forming an inner cavity of a sleeve part of an actuator shell, and the diameter of the sleeve forming part is gradually reduced from top to bottom; and when the driving assembly drives the forming column to ascend to a preset height relative to the upper die assembly, an avoiding gap is formed between the forming column and the inner wall of the pipe cavity of the pipe sleeve part. The utility model has the following advantages and effects: the scheme utilizes a new mechanical structure, and has the effects of preventing product damage by secondary demoulding, and realizing high integrity of the demoulded product and high-efficiency demoulding mode.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and particularly relates to a mold for core-pulling demolding. Background Art

[0002] As Figure 1 shown, it is an injection-molded product of an actuator housing 5. Two parallel sleeve parts 51 are integrally formed on the product of the actuator housing 5. An annular convex part 511 in an inverted buckle shape is formed on the outer side wall at the end of the sleeve part 51. When demolding this product, if the upper mold and the lower mold are forced to separate for mold opening, due to the existence of the annular convex part 511, it may cause the upper mold and the lower mold to become stuck when separating from each other, and further cause damage to the position of the sleeve part of the injection-molded product due to jamming during forced demolding. Therefore, it is urgent to develop a mold that can quickly and safely demold this injection-molded product. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a mold for core-pulling demolding, which has the effects of preventing product damage during secondary demolding, high integrity of the demolded product, and efficient demolding method.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: A mold for core-pulling demolding includes a mold body. The mold body includes an upper mold assembly and a forming column. The mold body is provided with a forming cavity. The forming column includes a sleeve forming part for forming the inner cavity of the sleeve part of the actuator housing, and the diameter of the sleeve forming part gradually decreases from top to bottom; it also includes a driving component. When the driving component drives the forming column to rise relative to the upper mold assembly to a predetermined height, a clearance is formed between the forming column and the inner wall of the tube cavity of the sleeve part.

[0005] By adopting the above technical solutions, during demolding, the shape of the forming column with a gradually decreasing diameter from top to bottom is utilized. When the driving component drives the forming column to move upward relative to the sleeve part for a certain distance, a clearance with a predetermined width is left between the forming column and the inner wall of the tube cavity of the sleeve part. Then, the upper mold assembly is translated upward as a whole relative to the actuator housing, and the elastic deformation of the sleeve part can be generated inward during the demolding process by using this clearance, preventing the sleeve part of the actuator housing from being stuck and damaged during the upward movement of the upper mold assembly. The utility model first withdraws the forming column upward relative to the actuator housing by a predetermined height to realize the separation of the forming column from the inner cavity of the sleeve part, and then moves the upper mold assembly upward relative to the actuator housing to realize the demolding of the upper mold assembly from the upper surface of the actuator housing. Through the above secondary demolding method, the situation that the sleeve part of the actuator housing is difficult to demold due to the outward convex annular convex part can be effectively avoided, and it has the effects of preventing product damage during secondary demolding, high integrity of the demolded product, and efficient demolding method.

[0006] A further arrangement of the present utility model is that the driving assembly includes a driving member and a sliding seat. A guiding structure is provided between the sliding seat and the forming column. Therefore, the driving member is used to drive the sliding seat to slidably cooperate with the upper die assembly, and under the guiding action of the guiding structure, the forming column is driven to move up and down.

[0007] By adopting the above technical solution, the driving member drives the sliding seat to slide on the upper die assembly, and the horizontal driving force of the present utility model is converted into a vertical driving force through the guiding structure, and finally the up and down movement of the forming column is realized.

[0008] A further arrangement of the present utility model is that the guiding structure includes a first guiding inclined surface and a second guiding inclined surface. The first guiding inclined surface is inclinedly arranged on the forming column, and the second guiding inclined surface is inclinedly arranged on the sliding seat to adapt to the first guiding inclined surface. The first guiding inclined surface and the second guiding inclined surface are in guiding cooperation.

[0009] A further arrangement of the present utility model is that the forming column is provided with an anti - detachment portion, and the sliding seat is provided with an anti - detachment groove. The anti - detachment portion is slidably arranged in the anti - detachment groove and is in anti - detachment cooperation with it.

[0010] By adopting the above technical solution, during the guiding cooperation between the forming column and the sliding seat, the corresponding first guiding inclined surface and the second guiding inclined surface of the two can always remain in contact.

[0011] A further arrangement of the present utility model is that sliding rails are provided on both sides of the sliding seat, and a guiding seat is fixedly arranged on the upper die assembly. The sliding rails are in sliding cooperation with the guiding seat, so that the sliding seat slides parallel to the guiding seat.

[0012] By adopting the above technical solution, by using the guiding cooperation between the sliding rails on both sides of the sliding seat and the guiding seat, the translation direction of the sliding seat relative to the upper die assembly is more consistent, thereby ensuring the consistency of the lifting speed of the forming column and facilitating the control of the smoothness of the forming column being withdrawn from the inner cavity of the sleeve portion of the actuator housing.

[0013] A further arrangement of the present utility model is that a locking structure is provided between the driving assembly and the guiding seat. When the driving assembly drives the forming column to move up to a predetermined position, the sliding seat and the guiding seat are in locking cooperation through the locking structure.

[0014] By adopting the above technical solution, when the forming column is withdrawn upward from the inner cavity of the sleeve portion of the actuator housing to a predetermined height, the locking of the sliding seat and the guiding seat can be realized through the locking structure, thereby preventing the situation that the forming column moves up excessively.

[0015] A further setting of the present utility model is as follows: The locking structure includes a locking member and a locking groove. The locking member is slidably disposed on the sliding seat, the locking groove is formed on the side wall of the guiding seat, and a linkage structure is provided between the locking member and the driving member. Under the linkage action of the linkage structure, the driving member can drive the locking member to be in locking cooperation with the locking groove.

[0016] By adopting the above technical solution, after the driving member drives the sliding seat to slide to a predetermined position, by using the linkage action of the linkage structure, the locking member can be locked in the corresponding locking groove of the guiding seat, so as to realize the locking and fixing of the sliding seat, so that the forming column remains in this position state after moving up to the predetermined position.

[0017] A further setting of the present utility model is as follows: A pushing member is fixedly provided at the output end of the driving member. The linkage structure includes a third guiding inclined surface provided on the pushing member and a fourth guiding inclined surface provided on the locking member. The third guiding inclined surface is in guiding cooperation with the fourth guiding inclined surface to drive the end of the locking member to insert into the corresponding locking groove.

[0018] By adopting the above technical solution, the driving member drives the pushing member to translate, and then under the guiding action of the third guiding inclined surface of the pushing member and the fourth guiding inclined surface at the end of the locking member, the locking member is laterally slid on the sliding seat and the other end of the locking member is inserted into and locked in the corresponding locking groove of the guiding seat.

[0019] A further setting of the present utility model is as follows: Limiting portions extend at both ends of the pushing member, and limiting grooves corresponding to the limiting portions are provided on the sliding seat. The limiting portions are movably disposed in the limiting grooves and are in limiting cooperation with them.

[0020] By adopting the above technical solution, the limiting portions can perform limiting movement in the limiting grooves, realizing the change of the relative position between the pushing member and the sliding seat. By using the limiting action of the limiting portions and the limiting grooves, it can effectively prevent the driving portion of the driving member from pushing the pushing member to translate excessively, resulting in the situation of jamming between components.

[0021] A further setting of the present utility model is as follows: The driving member is set as an oil cylinder or a cylinder.

[0022] In summary, the present utility model has the following beneficial effects:

[0023] A molding cavity is provided inside the mold body. A driving member is used to drive the sliding seat to translate on the upper mold assembly. The guiding structure is used to convert the horizontal driving force of the driving member into a vertical driving force, thereby driving the forming column to lift and slide. In the present utility model, by first pulling the forming column upward relative to the actuator housing by a predetermined height, the separation of the forming column from the inner cavity of the sleeve portion is achieved. Then, the upper mold assembly is moved upward relative to the actuator housing to achieve the demolding of the upper mold assembly from the upper surface of the actuator housing. Through the above-mentioned secondary demolding method, it is possible to effectively avoid the situation that the sleeve portion of the actuator housing is difficult to demold due to the outwardly protruding annular protrusion, and it has the effects of preventing product damage during secondary demolding, high integrity of the demolded product, and efficient demolding method. Description of the Drawings

[0024] Figure 1 It is a product structure diagram of an actuator housing in the prior art.

[0025] Figure 2 It is a structure diagram of the present utility model.

[0026] Figure 3 It is a top view of the present utility model.

[0027] Figure 4 It is the present utility model Figure 3 A cross-sectional view taken along the A-A section in the present utility model.

[0028] Figure 5 It is the present utility model Figure 4 A partial enlarged view of area B in the present utility model.

[0029] Figure 6 It is the present utility model Figure 4 A cross-sectional view of the forming column being pulled upward from the sleeve portion of the actuator housing in the present utility model.

[0030] Figure 7 It is the present utility model Figure 6 A partial enlarged view of area C in the present utility model.

[0031] Figure 8 It is a structure diagram of the driving component, forming column and guiding seat of the present utility model.

[0032] Figure 9 It is an exploded view of the driving component, forming column and guiding seat of the present utility model.

[0033] Figure 10 It is a state diagram of the locking structure of the present utility model in the unlocked state.

[0034] Figure 11 It is a state diagram of the locking structure of the present utility model in the locked state.

[0035] In the figure: 1. Pressing lifting table; 11. Forming column; 11a. First guiding inclined surface; 110. Anti - detachment part; 111. Fitting part; 112. Sleeve forming part; 2. Upper die assembly; 2a. Forming cavity; 2b. Avoidance gap; 21. Guiding seat; 21a. Locking groove; 3. Driving assembly; 31. Driving part; 32. Sliding seat; 32a. Second guiding inclined surface; 32b. Anti - detachment groove; 32c. Limiting groove; 321. Slide rail; 33. Locking part; 33a. Fourth guiding inclined surface; 4. Pushing part; 4a. Third guiding inclined surface; 41. Limiting part; 5. Actuator housing; 51. Sleeve part; 511. Annular convex part. Detailed implementation mode

[0036] The present utility model will be further described below in conjunction with the attached drawings.

[0037] A die for core - pulling and demolding, as Figure 2-7 shown, includes a die body. The die body includes an upper die assembly 2, a lower die assembly (not shown), a forming column 11, and a pressing lifting table 1 pressed above the upper die assembly 2. The upper die assembly 2, the lower die assembly, and the forming column 11 cooperate to form a forming cavity 2a. The forming column 11 includes a fitting part 111 and a sleeve forming part 112 for forming the inner cavity of the sleeve part of the swing - door motor actuator housing 5. The diameter of the sleeve forming part 112 gradually decreases from top to bottom. It further includes a driving assembly 3. When the driving assembly 3 drives the forming column 11 to rise relative to the upper die assembly 2 to a predetermined height, an avoidance gap 2b is formed between the forming column 11 and the inner wall of the tube cavity of the sleeve part. The driving part 31 is set as an oil cylinder or a cylinder.

[0038] As Figure 5-9 shown, the driving assembly 3 includes a driving part 31 and a sliding seat 32. A guiding structure is provided between the sliding seat 32 and the fitting part 111. The driving part 31 is used to drive the sliding seat 32 to slide - fit with the upper die assembly 2, and under the guiding action of the guiding structure, drive the forming column 11 to move up and down. The driving part 31 drives the sliding seat 32 to slide on the upper die assembly 2, and converts the horizontal driving force of the present utility model into a vertical driving force through the guiding structure, and finally realizes the up - and - down movement of the forming column 11. The guiding structure includes a first guiding inclined surface 11a and a second guiding inclined surface 32a. The first guiding inclined surface 11a is inclined on the forming column 11, and the second guiding inclined surface 32a is inclined on the sliding seat 32 in adaptation to the first guiding inclined surface 11a. The first guiding inclined surface 11a and the second guiding inclined surface 32a are in guiding cooperation. The forming column 11 is provided with an anti - detachment part 110, and the sliding seat 32 is provided with an anti - detachment groove 32b. The anti - detachment part 110 slides in the anti - detachment groove 32b and is in anti - detachment cooperation with it, so that during the guiding cooperation process of the forming column 11 and the sliding seat 32, the corresponding first guiding inclined surface 11a and the second guiding inclined surface 32a of the two can always remain in contact.

[0039] As Figure 8-11As shown, slide rails 321 are provided on both sides of the sliding seat 32, and a guiding seat 21 is fixedly provided on the upper die assembly 2. The slide rails 321 are slidably engaged with the guiding seat 21, enabling the sliding seat 32 to slide parallel to the guiding seat 21. By means of the guiding cooperation between the slide rails 321 on both sides of the sliding seat 32 and the guiding seat 21, the translation direction of the sliding seat 32 relative to the upper die assembly 2 becomes more consistent, thereby ensuring the consistency of the lifting speed of the forming column 11 and facilitating the control of the smoothness of the withdrawal of the forming column 11 from the inner cavity of the sleeve portion 51 of the actuator housing 5. A locking structure is provided between the driving assembly 3 and the guiding seat 21. When the driving assembly 3 drives the forming column 11 to move upward to a predetermined position, the sliding seat 32 and the guiding seat 21 are locked and engaged through the locking structure. When the forming column 11 is withdrawn upward to a predetermined height from the inner cavity of the sleeve portion 51 of the actuator housing 5, the locking of the sliding seat 32 and the guiding seat 21 can be achieved through the locking structure, thereby preventing the situation of excessive upward movement of the forming column 11. The locking structure includes a locking member 33 and a locking groove 21a. The locking member 33 is slidably provided on the sliding seat 32, and the locking groove 21a is formed on the side wall of the guiding seat 21. A linkage structure is provided between the locking member 33 and the driving member 31. Under the linkage action of the linkage structure, the driving member 31 can drive the locking member 33 to be locked and engaged with the locking groove 21a. After the driving member 31 drives the sliding seat 32 to slide to a predetermined position, by means of the linkage action of the linkage structure, the locking member 33 can be locked in the corresponding locking groove 21a of the guiding seat 21, realizing the locking and fixing of the sliding seat 32, so that the forming column 11 remains in that position state after moving upward to a predetermined position. A pushing member 4 is fixedly provided at the output end of the driving member 31. The linkage structure includes a third guiding inclined surface 4a provided on the pushing member 4 and a fourth guiding inclined surface 33a provided on the locking member 33. The third guiding inclined surface 4a is in guiding cooperation with the fourth guiding inclined surface 33a to drive the end of the locking member 33 to insert into the corresponding locking groove 21a. The driving member 31 drives the pushing member 4 to translate, and then under the guiding action of the third guiding inclined surface 4a of the pushing member 4 and the fourth guiding inclined surface 33a at the end of the locking member 33, the locking member 33 is driven to slide laterally on the sliding seat 32 and the other end of the locking member 33 is inserted into and locked in the corresponding locking groove 21a of the guiding seat 21. Limited portions 41 extend at both ends of the pushing member 4, and limiting grooves 32c corresponding to the limited portions 41 are provided on the sliding seat 32. The limited portions 41 are movably provided in the limiting grooves 32c and are in limiting cooperation with them, enabling the limited portions 41 to perform limiting movement in the limiting grooves 32c, realizing the change in the relative position between the pushing member 4 and the sliding seat 32. By means of the limiting action of the limited portions 41 and the limiting grooves 32c, the situation that the driving portion of the driving member 31 drives the pushing member 4 to translate excessively and causes jamming between components can be effectively prevented.

[0040] The basic working principle of the utility model is: when demoulding, the shape of the gradually reduced diameter of the molding column 11 from top to bottom is used. When the driving component 3 drives the molding column 11 to move up a certain distance relative to the tube sleeve part, a predetermined width of avoidance gap 2b is left between the molding column 11 and the inner wall of the tube cavity of the tube sleeve part. Then, the upper mold component 2 is translated upward relative to the actuator housing 5 as a whole, and the avoidance gap 2b is used to enable the sleeve part 51 to generate elastic deformation inward during the demoulding process, so as to prevent the sleeve part 51 of the actuator housing 5 from being stuck and damaged during the upward movement of the upper mold component 2. In this case, the utility model preferentially pulls the molding column 11 upward to a predetermined height relative to the actuator housing 5 to achieve the separation of the molding column 11 from the inner cavity of the sleeve portion 51, and then moves the upper mold assembly 2 upward relative to the actuator housing 5 to achieve demoulding of the upper mold assembly 2 and the upper surface of the actuator housing 5. The above-mentioned secondary demoulding method can effectively avoid the situation that the undercut part of the sleeve portion 51 of the actuator housing 5 is difficult to demould due to the protruding annular protrusion 511, and the secondary demoulding has the effects of preventing product damage, improving the integrity of the demoulded product, and making the demoulding method efficient.

[0041] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A core-pulling and demoulding mold, comprising a mold body, characterized in that: The mold body comprises an upper mold assembly (2) and a molding column (11), wherein the mold body is provided with a molding cavity (2a), wherein the molding column (11) comprises a sleeve molding portion (112) for molding the inner cavity of the tube sleeve portion of the actuator housing (5), wherein the diameter of the sleeve molding portion (112) gradually decreases from top to bottom; and further comprises a driving assembly (3), wherein when the driving assembly (3) drives the molding column (11) to rise to a predetermined height relative to the upper mold assembly (2), an avoidance gap (2b) is formed between the molding column (11) and the inner wall of the tube sleeve portion.

2. A core-pulling and demoulding mold according to claim 1, characterized in that: The driving assembly (3) comprises a driving member (31) and a sliding seat (32). A guiding structure is provided between the sliding seat (32) and the forming column (11), so that the driving member (31) is used to drive the sliding seat (32) to slide with the upper mold assembly (2), and drive the forming column (11) to move up and down under the guiding action of the guiding structure.

3. A core-pulling and demoulding mold according to claim 2, characterized in that: The guiding structure comprises a first guiding inclined surface (11a) and a second guiding inclined surface (32a); the first guiding inclined surface (11a) is arranged obliquely on the forming column (11); the second guiding inclined surface (32a) is adapted to the first guiding inclined surface (11a) and is arranged obliquely on the sliding seat (32); the first guiding inclined surface (11a) and the second guiding inclined surface (32a) are guided and matched.

4. A core-pulling and demoulding mold according to claim 3, characterized in that: The molding column (11) is provided with an anti-slip portion (110), the sliding seat (32) is provided with an anti-slip groove (32b), and the anti-slip portion (110) is slidably disposed in the anti-slip groove (32b) and cooperates with the anti-slip groove (32b).

5. A core-pulling and demoulding mold according to claim 2, characterized in that: Slide rails (321) are provided on both sides of the sliding seat (32), and the upper mold assembly (2) is fixedly provided with a guide seat (21). The slide rails (321) are slidably matched with the guide seat (21), so that the sliding seat (32) slides parallel to the guide seat (21).

6. A core-pulling and demoulding mold according to claim 5, characterized in that: A locking structure is provided between the driving assembly (3) and the guide seat (21); when the driving assembly (3) drives the molding column (11) to move upward to a predetermined position, the sliding seat (32) and the guide seat (21) are locked and matched via the locking structure.

7. A core-pulling and demoulding mold according to claim 6, characterized in that: The locking structure comprises a locking member (33) and a locking groove (21a); ​​the locking member (33) is slidably arranged on the sliding seat (32); the locking groove (21a) is provided on the side wall of the guide seat (21); a linkage structure is arranged between the locking member (33) and the driving member (31); under the linkage action of the linkage structure, the driving member (31) can drive the locking member (33) to lock and cooperate with the locking groove (21a).

8. A core-pulling and demoulding mold according to claim 7, characterized in that: The output end of the driving member (31) is fixedly provided with a pushing member (4), and the linkage structure comprises a third guiding inclined surface (4a) provided on the pushing member (4) and a fourth guiding inclined surface (33a) provided on the locking member (33), and the third guiding inclined surface (4a) and the fourth guiding inclined surface (33a) are guided and matched to drive the end of the locking member (33) to be inserted into the corresponding locking groove (21a).

9. A core-pulling and demoulding mold according to claim 8, characterized in that: The push member (4) has limit portions (41) extending from both ends, the sliding seat (32) is provided with a limit groove (32c) corresponding to the limit portion (41), and the limit portion (41) is movably disposed in the limit groove (32c) and cooperates with the limit groove (32c).

10. The core-pulling and demoulding mold according to claim 2, characterized in that: The driving member (31) is configured as an oil cylinder or an air cylinder.

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