Movable threaded insert

Abstract

The utility model discloses a movable thread insert which is used on a die and comprises a base, a forming column, a connecting shaft and a sleeve, the connecting shaft is arranged between the base and the forming column, one end of the connecting shaft is detachably connected with the base or the forming column, and a positioning structure is arranged on the forming column. The positioning structure limits a product formed on the forming column to rotate around the center line of the connecting shaft, the sleeve is arranged between the base and the forming column, the connecting shaft is sleeved with the sleeve in a rotating mode, the sleeve is provided with a thread part used for forming threads on the product, and the thread part is arranged outside the connecting shaft in a surrounding mode. And assembly and disassembly are more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould technical field, concretely relates to a movable screw insert. BACKGROUND

[0002] The injection mold is a kind of tool for forming plastic product, usually need to cooperate with injection molding machine, after product injection molding, product is ejected by ejector pin on mould, nowadays, in order to facilitate product by threaded mode connection, adopt movable screw insert and make product form internal thread or external thread, after injection molding, the product with thread formed is taken out from mould together with movable screw insert and placed on demoulding jig, then product and movable screw insert are separated using demoulding jig, and product demoulding can be completed.But the structure of the traditional movable screw insert is complex, and it is not convenient to assemble and disassemble. UTILITARY MODEL CONTENT

[0003] The utility model provides a movable screw insert in view of the deficiency of prior art, which can simplify the structure of the movable screw insert and make it more convenient to assemble and disassemble.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A movable screw insert is used on a mould, comprising a base, a forming column, a connecting shaft and a sleeve, the connecting shaft is arranged between the base and the forming column, one end of the connecting shaft is detachably connected with the base or the forming column, a positioning structure is arranged on the forming column, the positioning structure limits the rotation of the product formed on the forming column around the center line of the connecting shaft, the sleeve is arranged between the base and the forming column, the sleeve is rotatably arranged outside the connecting shaft, a threaded part for forming a thread on the product is arranged on the sleeve, and the threaded part surrounds the outside of the connecting shaft.

[0006] The movable screw insert is composed of the base, the forming column, the connecting shaft and the sleeve, the connecting shaft is arranged between the base and the forming column, one end of the connecting shaft is detachably connected with the base, the sleeve is arranged between the base and the forming column, the sleeve is rotatably arranged outside the connecting shaft, a threaded part for forming a thread on the product is arranged on the sleeve, the movable screw insert is composed of four parts, and the structure is simplified; one end of the connecting shaft is inserted into the sleeve, the sleeve is arranged outside the connecting shaft, one end of the connecting shaft is connected with the base, and the assembly is completed; the connecting shaft and the base are detached and separated, the sleeve is taken out from the connecting shaft, and the disassembly is completed, so that the movable screw insert is more convenient to assemble and disassemble.

[0007] As a preferred scheme, one end of the connecting shaft close to the base is detachably connected with the base by a screw.

[0008] As a preferred scheme, the base is provided with a mounting hole, the connecting shaft is provided with a threaded hole, and the screw is sequentially threaded through the mounting hole and the threaded hole, so that the connecting shaft is detachably connected with the base.

[0009] As a preferred scheme, the base is provided with a mounting groove, the connecting shaft is provided with a mounting block which can be embedded in the mounting groove, and the threaded hole is arranged on the mounting block, and the cooperation between the mounting block and the mounting groove can limit the rotation of the connecting shaft relative to the base.

[0010] As a preferred scheme, a first step is arranged around the side of the forming column close to the connecting shaft, a second step is arranged on the side of the base close to the connecting shaft, one end of the sleeve is attached to the first step, and the other end of the sleeve is attached to the second step.

[0011] As a preferred scheme, the forming column and the connecting shaft are integrally formed.

[0012] As a preferred scheme, the threaded part is arranged on the circumferential outer side wall of the sleeve, and external threads are arranged on the threaded part.

[0013] As a preferred scheme, at least two insertion slots are arranged around the circumferential outer side wall of the sleeve, and the insertion slots can be inserted by the insertion rod.

[0014] As a preferred scheme, the insertion slot is a circular insertion slot, and the diameter d of the circular insertion slot is 5mm-15mm.

[0015] A spiral extending oil storage groove is arranged between the circumferential inner wall of the sleeve and the circumferential outer wall of the connecting shaft, and the oil storage groove can store lubricating grease.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically, through setting up movable threaded insert which is composed of base, forming column, connecting shaft and sleeve, the connecting shaft is arranged between the base and the forming column, one end of the connecting shaft is detachably connected with the base, the sleeve is arranged between the base and the forming column, the sleeve is rotatably arranged outside the connecting shaft, the threaded part for making the product form thread is arranged on the sleeve, the movable threaded insert is composed of four parts, and the structure is simplified.

[0017] In order to more clearly set forth the structural features, technical means and the concrete purposes and functions reached by the utility model, the utility model will be further explained in detail in combination with the drawings and specific embodiments as follows: DRAWINGS

[0018] Figure 1 is an assembly structure schematic view of an embodiment of the utility model;

[0019] Figure 2 is another view structure schematic view of an embodiment of the utility model;

[0020] Figure 3 is a cross section schematic view of an embodiment of the utility model;

[0021] Figure 4 is a cross section schematic view of an embodiment of the utility model in use state;

[0022] Figure 5 is a three-dimensional schematic view of an embodiment of the utility model in use state.

[0023] Explanation of figure mark:

[0024] 10-base, 11-mounting hole, 12-mounting groove, 13-second step, 20-molding column, 21-positioning structure, 211-groove, 212-boss, 22-first step, 30-connecting shaft, 31-threaded hole, 32-mounting block, 40-sleeve, 41-threaded part, 411-external screw, 42-insert slot, 50-product, 51-internal screw, 60-demolding jig, 61-positioning groove, 62-rotating disc, 63-inserting rod. Specific implementation

[0025] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated position or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model.

[0026] In the description of the utility model, it needs to be explained that unless another explicit provision and limitation, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;It can be directly connected, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements inside.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0027] As Figures 1-5 shown, the utility model discloses a movable thread insert, is used on mould, including base 10, molding column 20, connecting shaft 30 and sleeve 40.

[0028] The connecting shaft 30 is arranged between the base 10 and the forming column 20, one end of the connecting shaft 30 is detachably connected with the base 10, the forming column 20 is provided with a positioning structure 21, and the positioning structure 21 limits the rotation of the product 50 formed on the forming column 20 around the center line of the connecting shaft 30.

[0029] The sleeve 40 is arranged between the base 10 and the forming column 20, the sleeve 40 is rotatably sleeved outside the connecting shaft 30, the sleeve 40 is provided with a threaded portion 41 for forming a screw thread of the product 50, and the threaded portion 41 surrounds outside the connecting shaft 30.

[0030] The end of the connecting shaft 30 close to the base 10 is detachably connected with the base 10 by a screw.

[0031] The base 10 is provided with a mounting hole 11, and the number of the mounting hole 11 is two, the connecting shaft 30 is provided with a threaded hole 31, the threaded hole 31 extends along the center line of the connecting shaft 30, and the screw passes through the mounting hole 11 and the threaded hole 31 in sequence, so that the connecting shaft 30 is detachably connected with the base 10.

[0032] The base 10 is provided with a mounting groove 12, the connecting shaft 30 is provided with a mounting block 32 which can be embedded in the mounting groove 12, the threaded hole 31 is arranged on the mounting block 32, and the cooperation between the mounting block 32 and the mounting groove 12 can limit the rotation of the connecting shaft 30 relative to the base 10; by arranging the mounting block and the mounting groove, the cooperation between the mounting block 32 and the mounting groove 12 can limit the rotation of the connecting shaft 30 relative to the base 10, so as to position the connecting shaft 30 relative to the base 10, after the mounting block 32 is embedded in the mounting groove 12, the mounting hole 11 is aligned with the threaded hole 31, and then the screw can pass through the mounting hole 11 and the threaded hole 31 quickly, so that the assembly is more convenient.

[0033] The first step 22 is annularly arranged on one side of the forming column 20 close to the connecting shaft 30, the second step 13 is arranged on one side of the base 10 close to the connecting shaft 30, one end of the sleeve 40 is attached to the first step 22, and the other end of the sleeve 40 is attached to the second step 13; by arranging the first step 22 and the second step 13, the axial movement of the sleeve 40 is limited, the position accuracy of the sleeve 40 in the axial direction is maintained, and the accuracy and quality of the screw thread formed by the product 50 meet the requirements.

[0034] The forming column 20 and the connecting shaft 30 are integrally formed; by adopting the integral forming, the forming column 20 and the connecting shaft 30 do not need to be assembled, the assembly process of the movable threaded insert is reduced, and the connection stability of the connecting shaft 30 and the forming column 20 is higher.

[0035] The threaded portion 41 is arranged on the circumferential outer side wall of the sleeve 40, and an external thread 411 is arranged on the threaded portion 41; during molding, the external thread 411 causes the product 50 to be correspondingly molded with an internal thread 51; it can be understood that an internal thread can also be arranged on the threaded portion 41, so that an external thread is correspondingly molded on the product 50.

[0036] The circumferential outer side wall of the sleeve 40 is annularly provided with at least two insertion grooves 42, and the insertion grooves 42 are used for inserting insertion rods 63; for example, the number of the insertion grooves 42 is four; during use, the base 10 is inserted into the positioning groove 61 on the demolding jig 60 to limit the rotation of the base 10; the demolding jig 60 is provided with a rotating disc 62, two insertion rods 63 on the rotating disc 62 are respectively inserted into the corresponding insertion grooves 42, the rotating disc 62 drives the two insertion rods 63 to rotate clockwise or counterclockwise, and the insertion rods 63 drive the sleeve 40 to rotate to realize the demolding of the product 50.

[0037] The insertion grooves 42 are circular insertion grooves 42 or rectangular insertion grooves 42, and preferably the circular insertion grooves 42; the diameter d of the circular insertion grooves 42 is 5mm-15mm, and the size of the insertion rod 63 is matched with the size of the circular insertion groove 42; by adopting the circular insertion grooves 42 with the diameter d of 5mm-15mm, the insertion rod 63 can better drive the sleeve 40 to rotate, so as to demold the product 50.

[0038] The positioning structure 21 is at least one recess 211 or at least one protrusion 212; when the positioning structure 21 adopts the recess 211, the recess 211 is open along the center line of the connecting shaft 30 and has an opening away from the connecting shaft 30; specifically, the recess 211 is arranged on the circumferential outer wall of the molding column 20, and the recess 211 is a long strip-shaped recess 211; during molding, the long strip-shaped recess 211 causes the inner wall of the product 50 to be molded with a rib; when the positioning structure 21 adopts the protrusion 212, the protrusion 212 is arranged on the end of the molding column 20 away from the connecting shaft 30; during molding, the protrusion 212 causes the inner wall of the product 50 to be molded with a recess.

[0039] A spiral extending oil storage groove (not shown) is arranged between the circumferential inner wall of the sleeve 40 and the circumferential outer wall of the connecting shaft 30, and the oil storage groove can store lubricating grease; specifically, the oil storage groove is arranged on the circumferential inner wall of the sleeve 40; it can be understood that the oil storage groove can also be arranged on the circumferential outer wall of the connecting shaft 30; by arranging the oil storage groove capable of storing lubricating grease, the sleeve 40 and the connecting shaft 30 can be kept lubricated for a long time, the wear between the sleeve 40 and the connecting shaft 30 is reduced, and the service life is improved.

[0040] It should be noted that the base 10 and the connecting shaft 30 of the utility model can also be clamped by a snap spring, so that the base 10 and the connecting shaft 30 can be detachably connected; in addition, the connecting shaft 30 can also be detachably connected with the molding column 20.

[0041] The demolding method of the utility model: after product 50 is formed, the worker / mechanical hand takes out the movable thread insert with product 50 from the mould, inserts the base 10 into the positioning slot 61 on the demolding fixture 60, the worker inserts two insertion rods 63 into the corresponding insertion slot 42 respectively, the rotating motor (not shown) on the demolding fixture 60 drives the rotating disc 62 to rotate clockwise, the rotating disc 62 drives two insertion rods 63 to rotate clockwise, the insertion rod 63 pushes the sleeve 40 to rotate clockwise around the center line of the connecting shaft 30, since the sleeve 40 cannot move axially and product 50 cannot rotate, when the sleeve 40 rotates, product 50 will move linearly along the center line of the connecting shaft 30 away from the sleeve 40 relative to the forming column 20, so that product 50 is separated from the thread part 41 and the forming column 20, and product 50 completes demolding.

[0042] In summary, the utility model discloses a movable thread insert formed by the base 10, the forming column 20, the connecting shaft 30 and the sleeve 40, the connecting shaft 30 is arranged between the base 10 and the forming column 20, one end of the connecting shaft 30 is detachably connected with the base 10, the sleeve 40 is arranged between the base 10 and the forming column 20, the sleeve 40 is rotatably arranged on the connecting shaft 30, the sleeve 40 is provided with the thread part 41 for forming the screw thread of product 50, the movable thread insert is formed by four components, and the structure is simplified.

[0043] The above is only the preferred embodiment of the utility model, and does not limit the utility model, so any modification, equivalent replacement, improvement, etc. according to the technical actuality of the utility model to the above embodiment still belongs to the range of the technical scheme of the utility model.

Claims

1. A live thread insert for use in a mold, characterized by, The base, the forming column, the connecting shaft and the sleeve are provided. The connecting shaft is arranged between the base and the forming column, one end of the connecting shaft is detachably connected with the base or the forming column, the forming column is provided with a positioning structure, and the positioning structure limits rotation of a product formed on the forming column around the center line of the connecting shaft. The sleeve is arranged between the base and the forming column, the sleeve is rotatably arranged outside the connecting shaft, the sleeve is provided with a threaded portion for forming a screw thread of the product, and the threaded portion is arranged outside the connecting shaft.

2. The running thread insert of claim 1 wherein, The end of the connecting shaft close to the base is detachably connected with the base by a screw.

3. The running thread insert of claim 2 wherein, The base is provided with a mounting hole, the connecting shaft is provided with a threaded hole, and the screw passes through the mounting hole and the threaded hole in sequence, so that the connecting shaft is detachably connected with the base.

4. The running thread insert of claim 3 wherein, The base is provided with a mounting groove, the connecting shaft is provided with a mounting block which can be embedded in the mounting groove, the threaded hole is arranged on the mounting block, and the mounting block and the mounting groove are matched to limit rotation of the connecting shaft relative to the base.

5. The live thread insert of claim 1 wherein, The forming column is provided with a first step around one side close to the connecting shaft, the base is provided with a second step around one side close to the connecting shaft, one end of the sleeve is matched with the first step, and the other end of the sleeve is matched with the second step.

6. The live thread insert of claim 1, wherein, The forming column and the connecting shaft are integrally formed.

7. The live thread insert of claim 1 wherein, The threaded portion is arranged on the circumferential outer side wall of the sleeve, and the threaded portion is provided with an external screw thread.

8. The live thread insert of claim 1, wherein, The circumferential outer side wall of the sleeve is provided with at least two insertion grooves, and the insertion grooves are used for inserting an insertion rod.

9. The running thread insert of claim 8 wherein, The insertion grooves are circular insertion grooves, and the diameter d of the circular insertion grooves is 5mm-15mm.

10. A running thread insert according to any one of claims 1-9, characterized in that A spiral extending oil storage groove is arranged between the circumferential inner wall of the sleeve and the circumferential outer wall of the connecting shaft, and the oil storage groove is used for storing grease.

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