Die capable of removing inverted buckle

Abstract

The utility model discloses a mold capable of removing inverted buckles. The mold capable of removing the inverted buckles comprises a mold body, at least one forming mechanism and at least one demolding mechanism. The mold body comprises an upper mold mechanism and a lower mold mechanism, the upper mold mechanism is arranged to be capable of moving upwards to cover the lower mold mechanism in a mold opening mode, and the upper mold mechanism and the lower mold mechanism jointly form at least one first forming space. The forming mechanism comprises a first forming assembly, the first forming assembly comprises a first forming piece and at least one buffering piece, the first forming piece comprises a front portion and a rear portion, and the front portion and the rear portion are both movably installed on the lower die mechanism. The buffering piece is installed between the front portion and the rear portion in a telescopic mode, and the front portion and the rear portion jointly form a second forming space. The demolding mechanism comprises a guide column and an inserting chute, any one of the guide column and the inserting chute is arranged on the upper mold mechanism, and the other one of the guide column and the inserting chute is arranged on the front part.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a detachable undercut mold. Background Art

[0002] Undercuts are the reverse wrapping mold structure of many plastic products. Due to the existence of undercuts, these plastic products cannot be demolded directly in one direction after injection molding. In order to facilitate the smooth demolding of plastic products with undercuts, the existing mold will set the part that forms the undercut of the product as a molded part independent of the upper and lower molds, and the mold will also be provided with a demolding mechanism. When the upper mold is opened, the demolding mechanism and the molded part use the principle of an inclined wedge to help separate the undercut formed by the product from the molded part, so that the product can be demolded completely.

[0003] The molding parts set in the existing molds usually correspond to multiple undercuts on the product. When the product is demolded, the molding parts will squeeze the multiple undercuts at the same time and cause the multiple undercuts to deform at the same time. When demolding, the molding space formed by the molding parts can allow the undercuts to deform. The space is limited, so the extrusion pressure of the molding parts on the undercuts is too large, which can easily cause the product to break. Utility Model Content

[0004] In order to achieve at least one of the above advantages of the utility model, the utility model provides a detachable inverted mold, and the detachable inverted mold comprises:

[0005] A mold body, the mold body comprising an upper mold mechanism and a lower mold mechanism, the upper mold mechanism is configured to cover the lower mold mechanism in a manner capable of moving upward to open the mold, and the upper mold mechanism and the lower mold mechanism jointly form at least one first molding space;

[0006] At least one molding mechanism, the molding mechanism includes a first molding assembly, the first molding assembly includes a first molding piece and at least one buffer piece, the first molding piece includes a front portion and a rear portion, the front portion and the rear portion are both movably mounted on the lower mold mechanism, the buffer piece is telescopically mounted between the front portion and the rear portion, the front portion and the rear portion jointly form a second molding space, the front portion forms a molding structure on a side facing the rear portion, the inner wall of the rear portion protrudes toward the second molding space to form a molding boss, and the rear portion forms a molding depression on a side facing away from the front portion;

[0007] At least one demolding mechanism, the demolding mechanism includes a guide column and an insertion bevel groove, either of the guide column and the insertion bevel groove is arranged on the upper mold mechanism, and the other is arranged on the front part, when the upper mold mechanism is covered on the lower mold mechanism, the guide column is inserted in the insertion bevel groove, and the first molding space is connected with the second molding space, wherein the rear part is closer to the first molding space than the front part, the upper mold mechanism moves along the mold opening direction and can drive the front part to move in a horizontal direction away from the first molding space through the demolding mechanism, and after the front part moves a predetermined distance in the direction away from the rear part, the rear part is pulled by the buffer member to move in a horizontal direction away from the first molding space.

[0008] According to an embodiment of the utility model, the detachable inverted mold is provided with a plurality of the molding mechanisms and the demoulding mechanisms at the same time, and the mold body forms a plurality of first molding spaces.

[0009] According to an embodiment of the utility model, the lower mold mechanism forms at least one movable groove, the front part and the rear part are both movably installed in the movable groove, and the side wall of the movable groove limits the moving direction of the first molding component.

[0010] According to one embodiment of the utility model, the guide column is installed on the upper mold mechanism, the plug-in bevel is formed at the front part, the axial direction of the guide column is parallel to the extension direction of the plug-in bevel, and the direction in which the plug-in bevel extends toward the upper mold mechanism forms an obtuse angle with the direction in which the first molding component moves along the horizontal direction away from the first molding space.

[0011] According to one embodiment of the utility model, the guide column is installed at the front part, the plug-in bevel is formed in the upper mold mechanism, the axial direction of the guide column is parallel to the extension direction of the plug-in bevel, and the direction in which the plug-in bevel extends toward the lower mold mechanism forms an obtuse angle with the direction in which the first molding component moves away from the first molding space in the horizontal direction.

[0012] According to one embodiment of the utility model, the mold body also forms at least one avoidance groove, which provides an avoidance space for the guide column when the upper mold mechanism is covered on the lower mold mechanism. Either the avoidance groove or the guide column is formed in the upper mold mechanism, and the other is formed in the lower mold mechanism.

[0013] According to one embodiment of the utility model, the detachable flip-down mold also includes a mounting part, the mold body forms an mounting space connected to the first molding space, the molding mechanism also includes a second molding part, the second molding part includes a rod and a head, the head is installed on one end of the rod, and the end of the rod away from the head is connected to the mounting part, the mounting part can drive the second molding part to move along the opening and closing direction of the upper mold mechanism to approach or move away from the lower mold mechanism, when the upper mold mechanism covers the lower mold mechanism, the mounting part is installed in the mounting space and the second molding part extends from the first molding space to the second molding space, and there is a gap between the second molding part and the inner wall of the first molding space and the inner wall of the second molding space.

[0014] According to an embodiment of the present invention, the movable groove has a predetermined depth, and the inner wall of the movable groove can limit the first forming assembly to move in a vertical direction.

[0015] According to an embodiment of the present invention, the first molding assembly further includes a control member, and the control member is connected to an end portion of the front portion away from the rear portion.

[0016] According to one embodiment of the utility model, the detachable inverted mold also includes an auxiliary mold opening mechanism, which includes a moving part, at least one rotating gear, at least one rotating shaft and at least one ejector, the moving part has at least one rotating portion, the rotating portion forms a plurality of teeth, the rotating gear is meshed with the rotating portion, the rotating gear and the ejector are both installed on the rotating shaft, the rotating shaft is rotatably installed on the lower mold mechanism and the axial direction of the rotating shaft extends in the horizontal direction, the rotating gear can drive the rotating shaft to rotate coaxially, and when the upper mold mechanism and the lower mold mechanism are closed, the first molded part is located on the rotation trajectory of the ejector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The schematic structural diagram of the detachable undercut mold of the utility model in one state is shown.

[0018] Figure 2 The utility model is shown Figure 1 Enlarged schematic diagram of part A.

[0019] Figure 3 A cross-sectional view of the detachable undercut mold of the utility model at a certain angle is shown.

[0020] Figure 4 A sectional view of the structure of a detachable undercut mold portion of the utility model is shown.

[0021] Figure 5 The utility model is shown Figure 4 Schematic diagram of the enlarged portion B.

[0022] Figure 6 The schematic diagram of the structure of the detachable undercut mold part of the utility model is shown.

[0023] Figure 7 A cross-sectional view of the detachable, inverted mold of the utility model is shown at another angle. DETAILED DESCRIPTION

[0024] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the utility model.

[0025] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0026] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0027] refer to Figures 1 to 7 A detachable inverted mold according to a preferred embodiment of the present invention will be described in detail below. The detachable inverted mold includes a mold body 10, at least one molding mechanism 20 and at least one demolding mechanism 30.

[0028] Specifically, the mold body 10 includes an upper mold mechanism 11 and a lower mold mechanism 12. The upper mold mechanism 11 is configured to cover the lower mold mechanism 12 in a manner that it can move upward to open the mold, and the upper mold mechanism 11 and the lower mold mechanism 12 together form at least one first molding space 1001.

[0029] The molding mechanism 20 includes a first molding assembly 21, the first molding assembly 21 includes a first molding member 211 and at least one buffer member 212, the first molding member 211 includes a front portion 2111 and a rear portion 2112. The front portion 2111 and the rear portion 2112 are both movably mounted on the lower mold mechanism 12. The buffer member 212 is installed between the front portion 2111 and the rear portion 2112 in a telescopic manner, and the front portion 2111 and the rear portion 2112 together form a second molding space 2101.

[0030] The front portion 2111 forms a molding structure 21111 on one side facing the rear portion 2112, and a matching structure is formed on the product produced by injection molding, which wraps the molding structure 21111 or is wrapped by the molding structure 21111. The inner wall of the rear portion 2112 protrudes toward the second molding space 2101 to form a molding boss 21121, and a molding groove wraps the molding boss 21121 on the product produced by injection molding; the rear portion 2112 forms a molding depression 211201 on one side facing away from the front portion 2111, and a molding protrusion wrapped by the molding depression 211201 is formed on the product produced by injection molding.

[0031] The demoulding mechanism 30 includes a guide post 31 and an insertion bevel 32. Either the guide post 31 or the insertion bevel 32 is provided in the upper mold mechanism 11, and the other is provided in the front portion 2111. When the upper mold mechanism 11 is covered with the lower mold mechanism 12, the guide post 31 is inserted in the insertion bevel 32, and the first molding space 1001 is connected with the second molding space 2101, wherein the rear portion 2112 is closer to the first molding space 1001 than the front portion 2111, and the injection material in a molten state is injected into the first molding space 1001 and the second molding space 2101, and is molded after being cooled. The upper mold mechanism 11 moves along the mold opening direction and drives the front part 2111 to move in a horizontal direction away from the first molding space 1001 through the demolding mechanism 30, so as to make room for demolding the molding groove; the front part 2111 moves in a direction away from the rear part 2112 and pulls the rear part 2112 to move in a horizontal direction away from the first molding space 1001 through the buffer part 212, and the molding protrusion 21121 squeezes the groove wall of the molding groove, so that the molding groove is deformed and separated from the molding protrusion 21121, and the product can be completely separated from the first molding part 211.

[0032] It is understandable that the horizontal movement of the front portion 2111 and the rear portion 2112 can reduce the squeezing force of the molding structure 21111 and the inner wall of the molding recess 211201 on the matching structure and molding protrusion formed by the injection molding of the product during demolding. In addition, after the movement of the front portion 2111, the molding protrusion 21121 can provide the space required for the deformation of the product caused by the subsequent demolding of the product, thereby avoiding the front portion 2111 and the rear portion 2112 from moving at the same time and exerting too much force on the product, thereby ensuring the integrity of the product.

[0033] In one example, the buffer member 212 is implemented to include a spring or a telescopic cylinder.

[0034] Preferably, the removable mold is provided with a plurality of molding mechanisms 20 and demoulding mechanisms 30, and the mold body 10 forms a plurality of first molding spaces 1001. In this way, the removable mold can simultaneously injection mold multiple products in a single opening and closing of the mold, thereby improving production efficiency.

[0035] It is worth mentioning that the lower mold mechanism 12 forms at least one movable groove 1201. The front portion 2111 and the rear portion 2112 are both movably mounted on the movable groove 1201, and the side wall of the movable groove 1201 limits the moving direction of the first molding component 21.

[0036] In one embodiment, the guide post 31 is mounted on the upper mold mechanism 11; the plugging bevel 32 is formed in the front portion 2111. The axial direction of the guide post 31 is parallel to the extending direction of the plugging bevel 32, and the direction in which the plugging bevel 32 extends toward the upper mold mechanism 11 forms an obtuse angle with the direction in which the first molding assembly 21 moves away from the first molding space 1001 in the horizontal direction.

[0037] When the upper mold mechanism 11 covers the lower mold mechanism 12, the guide column 31 gradually extends into the plug-in bevel groove 32, and the guide column 31 moves downward to squeeze the inner wall of the plug-in bevel groove 32, so that the first molding component 21 is squeezed by the guide column 31 and approaches the first molding space 1001, and then the first molding space 1001 and the second molding space 2101 are connected and connected. When the upper mold mechanism 11 drives the guide column 31 to move along the mold opening direction, the guide column 31 is gradually withdrawn from the plug-in bevel groove 32, and the guide column 31 moves upward to push the inner wall of the plug-in bevel groove 32, so that the first molding component 21 is pushed by the guide column 31 and moves in a horizontal direction away from the first molding space 1001, and then the product is separated from the first molding component 21.

[0038] As a variation of the above embodiment, the guide post 31 is mounted on the front portion 2111; the plugging bevel 32 is formed on the upper mold mechanism 11. The axial direction of the guide post 31 is parallel to the extending direction of the plugging bevel 32, and the direction in which the plugging bevel 32 extends toward the lower mold mechanism 12 forms an obtuse angle with the direction in which the first molding assembly 21 moves away from the first molding space 1001 in the horizontal direction.

[0039] In the process of the upper mold mechanism 11 covering the lower mold mechanism 12, the guide column 31 gradually extends into the plug-in bevel groove 32 formed by the upper mold mechanism 11, and the upper mold mechanism 11 moves downward to drive the inner wall of the plug-in bevel groove 32 to squeeze the peripheral wall of the guide column 31, so that the guide column 31 drives the first molding component 21 to approach the first molding space 1001, and then the first molding space 1001 and the second molding space 2101 are connected and connected. When the upper mold mechanism 11 moves along the mold opening direction, the guide column 31 gradually withdraws from the plug-in bevel groove 32, and the upper mold mechanism 11 moves upward to drive the inner wall of the plug-in bevel groove 32 to push the peripheral wall of the guide column 31, so that the first molding component 21 is pushed by the inner wall of the plug-in bevel groove 32 through the guide column 31 and moves in the horizontal direction away from the first molding space 1001, and then the product is separated from the first molding component 21.

[0040] Preferably, the mold body 10 further forms at least one avoidance groove 1002, and the avoidance groove 1002 provides an avoidance space for the guide pillar 31 when the upper mold mechanism 11 covers the lower mold mechanism 12, so as to prevent the guide pillar 31 from having a hard collision with the upper mold mechanism 11 or the lower mold mechanism 12. When the guide pillar 31 is installed in the first molding assembly 21, the avoidance groove 1002 is formed in the upper mold mechanism 11; when the guide pillar 31 is installed in the upper mold mechanism 11, the avoidance groove 1002 is formed in the lower mold mechanism 12.

[0041] Further, the detachable inverted mold further comprises a mounting member 40, and the mold body 10 forms a mounting space 1003 connected to the first molding space 1001. The molding mechanism 20 further comprises a second molding member 22, the second molding member 22 comprises a rod 221 and a head 222, the head 222 is mounted on one end of the rod 221, and one end of the rod 221 away from the head 222 is connected to the mounting member 40. The mounting member 40 can drive the second molding member 22 to move along the opening and closing direction of the upper mold mechanism 11 to approach or move away from the lower mold mechanism 12. When the upper mold mechanism 11 covers the lower mold mechanism 12, the mounting member 40 is mounted in the mounting space 1003 and the second molding member 22 extends from the first molding space 1001 to the second molding space 2101, and there is a gap between the second molding member 22 and the inner wall of the first molding space 1001 and the inner wall of the second molding space 2101. In this way, after the molds are closed, the injection material in a molten state is injected into the gap between the inner wall of the first molding space 1001, the inner wall of the second molding space 2101 and the second molded part 22, and is molded after being cooled.

[0042] Those skilled in the art can understand that, when the molding mechanism 20 is provided with the second molding part 22, the product injection molded by the detachable inverted mold has a groove or a channel; when the molding mechanism 20 is not provided with the second molding part 22, the product injection molded by the detachable inverted mold is solid.

[0043] In one embodiment, the upper mold mechanism 11 moves along the mold opening direction, so that the product is separated from the upper mold mechanism 11; at the same time, the first molding component 21 moves in a direction away from the first molding space 1001 under the cooperation of the guide column 31 and the plug-in bevel groove 32, so that the first molding component 21 is separated from the product; then the mounting part 40 and the second molding part 22 move upward as a whole, and the product that is cooled and formed and coated by the second molding part 22 is moved by the second molding part 22 and separated from the lower mold mechanism 12, and finally the staff pulls out the product along the extension direction of the second molding part 22 to obtain a complete product.

[0044] As a variation of the previous embodiment, the upper mold mechanism 11, the mounting member 40 and the second molding member 22 connected to the mounting member 40 move along the mold opening direction. At the same time, the product that is cooled and formed and coated on the second molding member 22 and the first molding component 21 that is adhered to the product move upward synchronously, so that the product is separated from the lower mold mechanism 12. Subsequently, the mounting member 40, the molding mechanism 20 and the product that is adhered to the molding mechanism 20 stop moving upward while the upper mold mechanism 11 continues to move upward, so that the first molding component 21 moves in a direction away from the mounting member 40 under the cooperation of the guide column 31 and the plug-in bevel 32, so that the first molding component 21 and the upper mold mechanism 11 are both separated from the product. Finally, the staff pulls out the product along the extension direction of the second molding member 22 to obtain a complete product.

[0045] It is worth mentioning that the movable groove 1201 has a predetermined depth, and the inner wall of the movable groove 1201 can limit the first molding component 21 to move in the vertical direction.

[0046] Preferably, the first molding assembly 21 further includes a control member 23. The control member 23 is connected to an end of the front portion 2111 away from the rear portion 2112 to provide a force application site for a worker to adjust the position of the first molding assembly 21.

[0047] Furthermore, the detachable undercut mold further comprises an auxiliary mold opening mechanism 50. The auxiliary mold opening mechanism 50 comprises a moving part 51, at least one rotating gear 52, at least one rotating shaft 53 and at least one ejector 54.

[0048] The moving member 51 has at least one belt rotating portion 511, and the belt rotating portion 511 forms a plurality of meshing teeth, and the following gear 52 is meshed with the belt rotating portion 511. The following gear 52 and the ejector 54 are both mounted on the following shaft 53, wherein the following shaft 53 is rotatably mounted on the lower mold mechanism 12 and the axial direction of the following shaft 53 extends in the horizontal direction, and the following gear 52 can drive the following shaft 53 to rotate coaxially.

[0049] When the upper mold mechanism 11 and the lower mold mechanism 12 are in mold closing, the first molding member 211 is located on the rotation track of the ejector 54. In this way, when the moving member 51 moves in the horizontal direction and drives the ejector 54 installed on the rotating shaft 53 to rotate and extend into the avoidance groove 1002 through the rotating gear 52, the first molding assembly 21 is pushed upward by the ejector 54 to assist the upper mold mechanism 11 in opening the mold.

[0050] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A removable undercut mold, characterized in that: The detachable undercut mold comprises: A mold body, the mold body comprising an upper mold mechanism and a lower mold mechanism, the upper mold mechanism is configured to cover the lower mold mechanism in a manner capable of moving upward to open the mold, and the upper mold mechanism and the lower mold mechanism jointly form at least one first molding space; At least one molding mechanism, the molding mechanism includes a first molding assembly, the first molding assembly includes a first molding piece and at least one buffer piece, the first molding piece includes a front portion and a rear portion, the front portion and the rear portion are both movably mounted on the lower mold mechanism, the buffer piece is telescopically mounted between the front portion and the rear portion, the front portion and the rear portion jointly form a second molding space, the front portion forms a molding structure on a side facing the rear portion, the inner wall of the rear portion protrudes toward the second molding space to form a molding boss, and the rear portion forms a molding depression on a side facing away from the front portion; At least one demolding mechanism, the demolding mechanism includes a guide column and an insertion bevel groove, either of the guide column and the insertion bevel groove is arranged on the upper mold mechanism, and the other is arranged on the front part, when the upper mold mechanism is covered on the lower mold mechanism, the guide column is inserted in the insertion bevel groove, and the first molding space is connected with the second molding space, wherein the rear part is closer to the first molding space than the front part, the upper mold mechanism moves along the mold opening direction and can drive the front part to move in a horizontal direction away from the first molding space through the demolding mechanism, and after the front part moves a predetermined distance in the direction away from the rear part, the rear part is pulled by the buffer member to move in a horizontal direction away from the first molding space.

2. The detachable undercut mold according to claim 1, characterized in that: The detachable inverted mold is provided with a plurality of the molding mechanisms and the demoulding mechanisms at the same time, and the mold body forms a plurality of first molding spaces.

3. The detachable undercut mold according to claim 1, characterized in that: The lower mold mechanism forms at least one movable groove, the front portion and the rear portion are both movably mounted on the movable groove, and the side wall of the movable groove limits the moving direction of the first molding component.

4. The detachable undercut mold according to claim 3, characterized in that: The guide column is installed on the upper mold mechanism, the plug-in bevel is formed at the front part, the axial direction of the guide column is parallel to the extension direction of the plug-in bevel, and an obtuse angle is formed between the direction in which the plug-in bevel extends toward the upper mold mechanism and the direction in which the first molding component moves away from the first molding space in the horizontal direction.

5. The detachable undercut mold according to claim 3, characterized in that: The guide column is installed at the front part, the plug-in bevel is formed in the upper mold mechanism, the axial direction of the guide column is parallel to the extension direction of the plug-in bevel, and the direction in which the plug-in bevel extends toward the lower mold mechanism forms an obtuse angle with the direction in which the first molding component moves away from the first molding space in the horizontal direction.

6. The detachable undercut mold according to claim 4 or 5, characterized in that: The mold body also forms at least one avoidance groove, which provides an avoidance space for the guide column when the upper mold mechanism covers the lower mold mechanism. Either the avoidance groove or the guide column is formed in the upper mold mechanism, and the other is formed in the lower mold mechanism.

7. The detachable undercut mold according to claim 6, characterized in that: The detachable flip-down mold also includes a mounting part, the mold body forms a mounting space connected to the first molding space, the molding mechanism also includes a second molding part, the second molding part includes a rod and a head, the head is mounted on one end of the rod, and the end of the rod away from the head is connected to the mounting part, the mounting part can drive the second molding part to move along the opening and closing direction of the upper mold mechanism to approach or move away from the lower mold mechanism, when the upper mold mechanism covers the lower mold mechanism, the mounting part is installed in the mounting space and the second molding part extends from the first molding space to the second molding space, and there is a gap between the second molding part and the inner wall of the first molding space and the inner wall of the second molding space.

8. The detachable undercut mold according to claim 7, characterized in that: The movable groove has a predetermined depth, and an inner wall of the movable groove can limit the first molding assembly to move in a vertical direction.

9. The detachable undercut mold according to claim 7, characterized in that: The first molding component further includes a manipulation member connected to an end portion of the front portion away from the rear portion.

10. The detachable undercut mold according to claim 7, characterized in that: The detachable and flip-over mold also includes an auxiliary mold opening mechanism, which includes a moving part, at least one rotating gear, at least one rotating shaft and at least one ejector, the moving part has at least one rotating portion, the rotating portion forms a plurality of teeth, the rotating gear is meshed with the rotating portion, the rotating gear and the ejector are both mounted on the rotating shaft, the rotating shaft is rotatably mounted on the lower mold mechanism and the axial direction of the rotating shaft extends in the horizontal direction, the rotating gear can drive the rotating shaft to rotate coaxially, and when the upper mold mechanism and the lower mold mechanism are closed, the first molded part is located on the rotation trajectory of the ejector.

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