CN218286598U - Thread twisting mechanism of injection mold - Google Patents
Thread twisting mechanism of injection mold Download PDFInfo
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- CN218286598U CN218286598U CN202222609544.0U CN202222609544U CN218286598U CN 218286598 U CN218286598 U CN 218286598U CN 202222609544 U CN202222609544 U CN 202222609544U CN 218286598 U CN218286598 U CN 218286598U
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Abstract
The utility model discloses a hank tooth mechanism of injection mold, it includes drive group, dabber and hank tooth group, hank tooth group dress is on the dabber to by the drive group drive hank tooth or move back the tooth, hank tooth group includes coaxial distribution's drive cover, removal cover and hank tooth cover, hank tooth cover is overlapped on the dabber, its hank tooth end stretches into the shaping chamber of injection mold; the driving sleeve is connected with the driving group, sleeved on the mandrel and connected with the thread sleeve in a linkage manner; the movable sleeve is sleeved on the thread twisting sleeve and is positioned between the driving sleeve and the thread twisting end. The utility model discloses well hank tooth group has carried out the components of a whole that can function independently design, specifically includes hank facing, removal cover and the driving sleeve of mutually supporting the assembly, only driving sleeve and hank facing are rotated hank tooth or rotatory tooth that moves back by the driving of driving group, and the removal cover of product A lateral wall contact is irrotational after with the shaping to avoid the condition of hank wound to appear, solve the technical problem among the prior art.
Description
Technical Field
The utility model belongs to the technical field of injection mold and specifically relates to an assemble in injection mold and be used for fashioned hank tooth mechanism of product screw tooth.
Background
The utility model discloses a high-pressure pump body mould structure as set forth in chinese utility model patent publication No. CN217123811U, wherein to the hank tooth mechanism of screw thread processing usefulness in the product mold insert formula as an organic whole, this type of mold insert can be applied to in the injection moulding processing of product A as shown in fig. 1, and product A has an inclined end face, and the inner wall sets up screw tooth A, behind injection moulding, utilize as above open scheme to carry out screw tooth shaping man-hour, the mold insert can lead to the lower position on product A inclined plane to be hank wound because of the atress inequality, causes the off-spec of post-processing shaping product to improve the processing cost, reduce machining efficiency.
Therefore, how to improve the threading mechanism to avoid the condition of threading damage to the product a, improve the processing efficiency, ensure the product quality and reduce the processing cost is one of the technical problems to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem who exists among the above-mentioned prior art, the utility model aims to provide an assemble in injection mold and be used for fashioned hank tooth mechanism of product thread.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an injection mold's hank tooth mechanism, its includes drive group, dabber and hank tooth group, hank tooth assembly is on the dabber to by the drive of drive group hank tooth or withdraw from the tooth, hank tooth group is including the drive cover, removal cover and the hank tooth cover of coaxial distribution, wherein:
the thread-twisting sleeve is sleeved on the mandrel, and the thread-twisting end of the thread-twisting sleeve extends into a forming cavity of the injection mold;
the driving sleeve is connected with the driving group, sleeved on the mandrel and connected with the thread sleeve in a linkage manner;
the movable sleeve is sleeved on the thread twisting sleeve and is positioned between the driving sleeve and the thread twisting end.
Further preferred is: the thread-twisting sleeve is in a circular tube shape, and one end of the annular boss for twisting the thread is the thread-twisting end;
the tooth end is abutted against the convex edge of the mandrel.
Further preferred is: the other end of the thread sleeve extends into the driving sleeve and is connected with the driving sleeve through a pin shaft.
Further preferably: the driving sleeve is connected and linked with the driving group through the driving gear.
Further preferred is: the movable sleeve is provided with a guide tangent plane along the axial direction, and the guide tangent plane is a plane.
Further preferred is: the guide section is located at the large-diameter end of the movable sleeve.
Further preferred is: the axial section of the moving sleeve is in a T shape, the small-diameter end of the moving sleeve is close to the twisted tooth end, and the large-diameter end of the moving sleeve is close to the driving sleeve;
the two guide tangent planes are symmetrically distributed at the large-diameter end of the movable sleeve.
Further preferably: the drive assembly includes rack, driving gear and driven gear, wherein:
the rack is driven by the cylinder and meshed with the driving gear;
the driving gear is assembled on the driving shaft;
the driven gear is assembled on the driving shaft and meshed with the driving gear.
After the technical scheme is adopted, compared with the background art, the utility model, have following advantage:
the utility model discloses well hank tooth group has carried out the components of a whole that can function independently design, specifically including hank facing, removal cover and the drive sleeve of mutually supporting the assembly, only drive sleeve and hank facing are organized the drive and are rotated hank tooth or rotatory move back the tooth, and the removal cover of product A lateral wall contact is irrotational after the shaping to avoid the condition of hank wound to appear, solve the technical problem among the prior art, reach the purpose that improves machining efficiency, ensure product quality, reduce the processing cost.
Drawings
FIG. 1 is a schematic diagram of a product structure;
fig. 2 is a schematic structural view of the thread twisting mechanism in the embodiment of the present invention;
fig. 3 is an exploded view of the set of teeth according to an embodiment of the present invention;
FIG. 4 is an axial cross-sectional view of the set of cutter teeth in an embodiment of the present invention;
fig. 5 is a schematic structural view of the driving sleeve in the embodiment of the present invention;
FIG. 6 is a schematic view of the structure of the tooth grinding sleeve in the embodiment of the present invention;
fig. 7 is a schematic structural view of the movable sleeve in the embodiment of the present invention;
FIG. 8 is a schematic view of an injection mold for assembling the threading structure according to an embodiment of the present invention;
fig. 9 is an enlarged view of the structure at Q in fig. 8.
The reference numerals of the specification are as follows:
A. the product comprises A1, threads, 110, a rack, 120, a driving gear, 130, a driving shaft, 140, a driven gear, 210, a driving gear, 220, a mandrel, 221, a convex edge, 230, a driving sleeve, 231, a driving section, 232, a limiting section, 233, a pressing section, 240, a moving sleeve, 241, a guide section, 250, a twisting sleeve, 251, a twisting tooth end, 260, a pin rod, 1, a cylinder, 31, a top plate, 32, a static template, 33, a fixing plate, 34, a glue injection nozzle, 35, a first bearing, 36, a guide sleeve, 37, a second bearing, 4, a static template, 5, a dynamic template, 61, a dynamic template, 62, an ejector pin and a 63 ejector pin plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, and are only for convenience of description and simplification of the present invention, but do not indicate or imply that the device or element of the present invention must have a specific orientation, and thus, should not be construed as limiting the present invention.
Examples
As shown in fig. 2, the thread twisting mechanism of the injection mold comprises a driving set and a thread twisting set, wherein the thread twisting set is sleeved on a mandrel 220 and is driven by the driving set to twist threads, and then the threads A1 in the product a are processed.
As shown in fig. 2 to 4, the mandrel 220 is a cylinder, and one end of the mandrel 220 has a protruding edge 221, and the reamer is assembled on the mandrel 220 and abuts against the protruding edge 221.
As shown in fig. 3 to 4, the cutter tooth group includes a cutter tooth socket 250, a movable socket 240 and a driving socket 230, and the cutter tooth socket 250 is connected and linked with the driving socket 230.
As shown in fig. 3, 4 and 6, the thread end 251 of the thread insert 250 extends into the forming cavity and is sleeved on the mandrel 220, the thread end 251 is an end of the thread insert 250 having a circular boss, on which a thread for forming the thread A1 is disposed, and the outer diameter of the boss is larger than the outer diameter of the thread insert 250 itself, that is: the bosses protrude from the thread sleeve 250, and the bosses and the thread sleeve 250 of the rest part have an outer diameter difference, so that the bosses and the outer wall of the thread sleeve 250 of the rest part are in a step shape. It should be noted that: the thread sleeve 250 is sleeved on the mandrel 220, the thread end 251 of the thread sleeve is arranged close to the convex edge 221 of the mandrel 220 and is abutted against the convex edge 221, and the thread protrudes out of the convex edge 221 of the mandrel 220, so that the thread A1 on the inner wall of the injection molded product A is machined.
As shown in fig. 3 to 5, the driving sleeve 230 is a circular tube body having three sections with different outer diameters, and specifically includes a pressing section 233, a limiting section 232, and a driving section 231 that are integrally connected and sequentially disposed, wherein an inner diameter of the pressing section 233 is adapted to an outer diameter of the threading sleeve 250, and inner diameters of the limiting section 232 and the driving section 231 are adapted to an outer diameter of the core shaft 220. The driving sleeve 230 is sleeved on the mandrel 220 and is coaxially distributed with the moving sleeve 240, and the pressing section 233 is sleeved on the threading section, that is to say: one end of the threading sleeve 250, which is opposite to the threading end 251, is a linkage end, and the linkage end extends into the driving sleeve 230, so that the pressing section 233 of the driving sleeve 230 is sleeved at the linkage end. It should be noted that: the thread cutting sleeve 250 and the driving sleeve 230 are connected by a pin 260 to realize linkage, that is: the driving sleeve 230 rotates to twist or back the teeth together with the thread cutting sleeve 250.
As shown in fig. 5, the drive section 231 of the drive sleeve 230 is fitted with the drive gear 210. Specifically, the method comprises the following steps of (1); the driving section 231 is provided with a mounting groove for mounting the driving gear 210, and the mounting groove is in a cross shape.
As shown in fig. 3, 4 and 7, the movable sleeve 240 is a circular tube with a T-shaped axial cross-section, and is sleeved on the thread cutting sleeve 250 and disposed adjacent to the driving sleeve 230. Specifically, the method comprises the following steps: one end of the movable sleeve 240 is a large-diameter end, the other end of the movable sleeve 240 is a small-diameter end, the small-diameter end of the movable sleeve 240 is arranged close to the tooth twisting end 251 of the tooth twisting, the large-diameter end is provided with two guide tangent planes 241, the two guide tangent planes 241 are planes and are distributed along the axial direction of the movable sleeve 240, and the two guide tangent planes 241 are symmetrically distributed by taking the axis of the movable sleeve 240 as a central line.
As shown in fig. 2 to 7, the driving assembly includes a rack 110, a pinion 120, and a driven gear 140, one end of the rack 110 is connected to a driving end of the cylinder and drives the rack 110 to move, the pinion 120 is sleeved on the driving shaft 130 and engaged with the rack 110, the driven gear 140 is fixed to the driving shaft 130 and driven by the rack 110 to rotate, the driving gear 210 is engaged with the driven gear 140, the driving gear 210 is sleeved on the driving sleeve 230 and connected with the driving sleeve 230, and further drives the thread twisting sleeve 250 to twist or withdraw threads.
It should be noted that: the quantity of hank tooth group can be set for according to actual processing demand, under the general condition, sets up 1-2 hank tooth group in one set of injection molding grinding apparatus, and when having two hank tooth groups, two hank tooth groups utilize same drive group drive, two hank tooth group rotates simultaneously and hank tooth and rotation and moves back the tooth.
With reference to fig. 1 to 9, the thread twisting mechanism is assembled in an injection mold for producing a processed product a, and a thread twisting end 251 of a thread twisting sleeve 250 of the injection mold extends into a forming cavity of the product a in the injection mold.
Referring to fig. 1 to 9, the injection mold includes a stationary mold unit and a movable mold unit, the stationary mold unit includes a top plate 31 and a stationary mold plate 32, a glue injection nozzle 34 is provided on the top plate 31, and the glue injection nozzle 34 is communicated with the molding cavity through a glue injection flow channel. The static template 32 is arranged close to the movable module and internally embedded with a static mold core 4, and the static mold core 4 is provided with a static mold forming groove and a through hole which penetrates through the static mold core 4 and is communicated with the forming groove; the static template 32 is further provided with a mounting groove, and the mounting groove is positioned beside the static mold core 4 and close to the glue injection nozzle 34; the panel is stacked on the static template 32 and embedded in the top plate 31. The movable mould unit embeds ejection mechanism, it is close to embedded movable mould core 5 of movable mould board 61 of quiet module, movable mould core 5 sets up the movable mould shaping groove, the shaping chamber that product A injection moulding used is obtained in butt joint and the intercommunication of movable mould shaping groove and quiet mould shaping groove, ejection mechanism includes thimble 62 and thimble board 63, thimble 62 passes the ejecting hole of movable mould shaping tank bottom portion and can stretch into to the shaping intracavity, thimble board 63 drives thimble 62 and ejecting product A towards the shaping intracavity.
As shown in fig. 1 to 9, the threading mechanism is assembled in the stationary module. Specifically, the method comprises the following steps: the mandrel 220 is arranged through the stationary mold core 4, one end of which is clamped at the top end of the panel, and the other end of which is pressed against the inner wall of the molding cavity, that is to say: the spindle 220 is fixedly installed, and the spindle 220 is always fixed in a state that the threading group performs rotary threading or rotary withdrawal. The thread sleeve 250, the movable sleeve 240 and the driving sleeve 230 in the thread group are assembled on the mandrel 220 according to the above; it should be noted that: the thread groups are all positioned in the mounting grooves of the static template 32, the driving sleeve 230 is meshed with the driving gear 210 by the driving group to drive rotation, a first bearing 35 is assembled on the driving sleeve 230, the first bearing 35 is embedded in a groove on the inner wall of the panel, and the first bearing 35 is arranged close to the glue injection nozzle 34. Preferably, the following components: the pressing section 233 of the driving sleeve 230 is also provided with a second bearing 37, and the second bearing 37 is embedded in a groove on the inner wall of the static template 32.
It should be noted that: referring to fig. 1 to 9, a guide sleeve 36 is sleeved outside the limiting section 232 of the driving sleeve 230, and the guide sleeve 36 is not driven by the driving sleeve 230 to rotate, that is: the guide sleeve 36 is not connected or tightly attached to the driving sleeve 230, and preferably: a very small gap may exist between the guide sleeve 36 and the drive sleeve 230; the guide sleeve 36 is located between the driving gear 210 and the second bearing 37 at the stationary die plate 32, and is a tubular body with a T-shaped axial cross section, the large-diameter end of the guide sleeve 36 is matched and limited with the step surface at the corresponding position of the stationary die plate 32, and the large-diameter end of the guide sleeve 36 has two guide planes, so that the driving sleeve 230 can move along the axial direction of the driving sleeve 230, and the movement can be limited by the step surface at the corresponding position of the stationary die plate 32.
As shown in fig. 1 to 9, the mandrel 220, the threading end 251 of the threading sleeve 250, and the movable sleeve 240 all extend into the molding cavity from the through hole of the stationary mold core 4. The main points of note are: the thread end 251 of the thread sleeve 250 corresponds to the inner wall of the product A and is subjected to thread A1 forming processing at the inner wall; the convex edge 221 of the mandrel 220 is located below the thread end 251, and the outer diameter of the convex edge is smaller than that of the thread end 251, so that the formed thread A1 is prevented from being pulled or damaged during thread withdrawal; the moving sleeve 240 is located above the tooth end 251 and abuts against the boss of the tooth end 251, and slides and displaces along the axial direction of the tooth along with tooth twisting or tooth withdrawing.
As shown in fig. 8 and 9, the movable sleeve 240 is inserted into the through hole of the stationary mold core 4 from the stationary mold core 4 toward the movable mold core 5, and the large diameter end of the movable sleeve 240 abuts against the inner wall of the through hole, so as to limit the axial displacement of the movable sleeve 240.
The rack 110 is driven by the cylinder to rotate forward or backward, so as to drive the driving gear 120 and the driving shaft 130 to rotate, and then drive the driven gear 140 to rotate; the driven gear 140 is engaged with the driving gear 210, and then drives the driving sleeve 230 to rotate; therefore, the driving sleeve 230 is connected with the threading sleeve 250 through the pin rod 260, and then the threading sleeve 250 and the driving sleeve 230 synchronously rotate to realize the rotation of the threading and achieve the purpose of processing and forming the thread A1; the moving sleeve 240 is not connected with the threading sleeve 250 and the driving sleeve 250, and then does not rotate; when the thread withdrawing process is carried out, the air cylinder rotates reversely or positively to drive the rack 110, the driving gear 120, the driving shaft 130 and the driven gear 140 to rotate in sequence, the driven gear 140 drives the driving gear 210, the driving gear 210 drives the driving sleeve 230 and the thread twisting sleeve 250 to withdraw and rotate, the movable module and the static module are separated, the thread twisting end 251 of the thread twisting sleeve 250 is withdrawn from the product A, the positioning sleeve 240 does not rotate along with the thread twisting sleeve in the withdrawing process, but slides and displaces along the thread withdrawing direction and is withdrawn from the inner side of the product A, and the damage and the strain of the inner wall of the product A in the thread withdrawing process are avoided. Therefore, the technical problem that the inner wall of the product A is twisted by the integral twisting tooth insert in the prior art is solved, the quality of the product A is effectively ensured, the reject ratio of the product A is reduced, and then the processing efficiency is improved and the processing cost is reduced.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. Injection mold's hank tooth mechanism, it includes drive group, dabber and hank tooth group, hank tooth assembly is on the dabber to by the drive group drive hank tooth or retreat tooth, its characterized in that: the hank tooth group includes coaxial distribution's drive cover, removes cover and hank tooth cover, wherein:
the thread sleeve is sleeved on the mandrel, and the thread end of the thread sleeve extends into a forming cavity of the injection mold;
the driving sleeve is connected with the driving group, sleeved on the mandrel and connected with the thread sleeve in a linkage manner;
the movable sleeve is sleeved on the thread twisting sleeve and is positioned between the driving sleeve and the thread twisting end.
2. The thread-twisting mechanism of an injection mold according to claim 1, characterized in that: the thread twisting sleeve is in a circular tube shape, and one end of the annular boss for thread twisting is the thread twisting end;
the tooth end is abutted against the convex edge of the mandrel.
3. The thread-twisting mechanism of an injection mold according to claim 2, characterized in that: the other end of the thread sleeve extends into the driving sleeve and is connected with the driving sleeve through a pin shaft.
4. The thread twisting mechanism of an injection mold according to claim 1 or 3, wherein: the driving sleeve is connected and linked with the driving group through the driving gear.
5. The thread-twisting mechanism of an injection mold according to claim 1, characterized in that: the movable sleeve is provided with a guide tangent plane along the axial direction of the movable sleeve, and the guide tangent plane is a plane.
6. The thread-twisting mechanism of an injection mold according to claim 5, wherein: the guide tangent plane is positioned at the large-diameter end of the movable sleeve.
7. The thread twisting mechanism of an injection mold according to claim 5 or 6, wherein: the axial section of the moving sleeve is in a T shape, the small-diameter end of the moving sleeve is close to the twisted tooth end, and the large-diameter end of the moving sleeve is close to the driving sleeve;
the two guide tangent planes are symmetrically distributed at the large-diameter end of the movable sleeve.
8. The thread-twisting mechanism of an injection mold according to claim 4, wherein: the drive assembly includes rack, driving gear and driven gear, wherein:
the rack is driven by the cylinder and meshed with the driving gear;
the driving gear is assembled on the driving shaft;
the driven gear is assembled on the driving shaft and meshed with the driving gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222609544.0U CN218286598U (en) | 2022-09-30 | 2022-09-30 | Thread twisting mechanism of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222609544.0U CN218286598U (en) | 2022-09-30 | 2022-09-30 | Thread twisting mechanism of injection mold |
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| Publication Number | Publication Date |
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| CN218286598U true CN218286598U (en) | 2023-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222609544.0U Active CN218286598U (en) | 2022-09-30 | 2022-09-30 | Thread twisting mechanism of injection mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116160624A (en) * | 2023-03-07 | 2023-05-26 | 厦门捷信达精密科技股份有限公司 | Multicolor rotary core driving mechanism |
-
2022
- 2022-09-30 CN CN202222609544.0U patent/CN218286598U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116160624A (en) * | 2023-03-07 | 2023-05-26 | 厦门捷信达精密科技股份有限公司 | Multicolor rotary core driving mechanism |
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