Gel pen shell forming equipment
By setting the cutting part in the injection molding mold of a neutral pen shell, the problem of difficulty in the separation of neutrophil shells and waste is solved, and the easier separation and reduced effect of the burrs are achieved, and the subsequent polishing steps are simplified.
Patent Information
- Application Number
- CN202420323908.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-20
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-02-20
AI Technical Summary
The existing neutral pen shell injection molds have difficulties in separating the neutral pen shell and waste, which leads to difficult separation operations and may cause burrs on the neutral pen shell, increasing the difficulty of subsequent polishing.
Set the cutting part in the injection molding mold, and use the cutting part to cut off the waste materials when the plastic is basicly solidified and the waste is still softened, thereby achieving a relatively easy separation of neutrophil shells and waste.
Through the design of the cutting part, the separation difficulty of the neutral shell and waste is reduced, and the occurrence of the occurrence of the burrs on the neutral pen shell after the separation of the separation of the after -separation of the subsequent polishing steps.
Smart Images
Figure CN222406959U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of gel pen manufacturing equipment, in particular to gel pen shell molding equipment. Background Art
[0002] The shell of a gel pen is mostly made of plastic. Common materials include ABS, PC, PP, etc. They are usually made using an injection molding machine through an injection molding process, and an injection mold is required during the injection molding process.
[0003] In order to improve the injection molding efficiency, the existing injection molds used for the injection molding of gel pen shells usually have multiple slots in the mold to achieve one-time injection molding of multiple gel pen shells. Most of these molds have an injection port on the mold that is connected to multiple slots at the same time through a sprue and a water outlet in the mold. After the liquid plastic in the sprue and the water outlet is cooled, waste is formed. The waste is connected to the multiple gel pen shells. Usually, the waste and the gel pen shells are taken out of the injection mold as a whole and then separated by subsequent workstations. During separation, the waste at the water outlet has been cooled and solidified, which makes the separation operation more difficult. It is also easy to cause larger burrs on the gel pen shells, which increases the difficulty of the subsequent polishing steps. Utility Model Content
[0004] The utility model aims to provide a gel pen shell molding device, which provides a cutting part in a mold for injection molding, and can cut off the waste material when the plastic in the mold is basically solidified and the waste material at the water outlet is still in a softened state, thereby reducing the difficulty of separating the waste material from the injection-molded gel pen shell.
[0005] The technical solution adopted by the utility model to solve the above problems is:
[0006] A gel pen shell molding device comprises a frame, an injection molding module and a mold. The injection molding module and the mold are both arranged on the frame. The injection molding module is used to input molten plastic into the mold. The mold comprises a male mold and a female mold. The male mold and the female mold are respectively provided with a plurality of insertion rods and a plurality of slots. The insertion rods are adapted and inserted in the slots one by one. The male mold is provided with an injection nozzle. The female mold is provided with a sprue adapted to the injection nozzle. The sprue is connected with the slot through a water port. The male mold is provided with a cutting part. When the cutting part moves into the slot, it cuts off the waste material at the water port.
[0007] In the above technical solution, preferably, the injection channel and the water outlet are opened on the upper end surface of the mother mold, the interval between the insertion rod and the slot corresponds to the thickness of the gel pen housing, the cutting part is cylindrical and arranged at the upper end of the insertion rod, and the cutting part is slidably inserted in the slot.
[0008] In the above technical solution, preferably, the male mold is fixed on the frame, and the female mold is driven by the first screw motor to move up and down in the vertical direction.
[0009] In the above technical solution, preferably, the mother mold includes a base plate detachably installed on its lower side, and the slot includes a cylindrical section and a contraction section adapted to the shape of the gel pen housing, and the cylindrical section and the contraction section are respectively arranged in the mother mold and the base plate.
[0010] In the above technical solution, preferably, the base plate is driven by a second screw motor to move up and down in the vertical direction.
[0011] In the above technical solution, preferably, the male mold includes a cover plate arranged on the lower side thereof, the injection nozzle and the insertion rod are inserted through the cover plate, a spring is arranged between the cover plate and the male mold, and a limiting frame is arranged on the frame, and the spring drives the lower end surface of the cover plate to rest against the limiting clamp.
[0012] In the above technical solution, preferably, the sprue is X-shaped, and the slots are centrally symmetrically arranged at four positions of the sprue, front, back, left, and right.
[0013] In the above technical solution, preferably, the first screw motor and the second screw motor are both arranged on the back of the frame, and the frame is provided with four vertically arranged long strip sliding holes, the screw of the first screw motor is connected with a first connecting block by a thread, and the first connecting block is fixedly connected to the mother mold through the two outermost sliding holes, and the screw of the second screw motor is connected with a second connecting block by a thread, and the second connecting block is fixedly connected to the base plate through the two inner sliding holes, and the first connecting block and the second connecting block are both sleeved on two limit rods vertically fixed on the frame.
[0014] Compared with the prior art, the utility model has the following advantages and effects:
[0015] The utility model arranges the male mold and the female mold in a close fit so that the insertion rod is inserted into the slot, thereby forming a cavity corresponding to the shape of the gel pen shell between the insertion rod and the slot, and plastic flows into the cavity through the nozzle. Since the plastic in the cavity is cooled and solidified before the waste material at the nozzle, the cutting part can be driven to move into the slot when the plastic in the cavity is basically solidified while the waste material at the nozzle is still in a softened state, thereby cutting off the waste material at the nozzle from the gel pen shell that has been basically solidified, thereby realizing the separation of the gel pen shell and the waste material. Since the waste material at the nozzle is in a softened state during the separation operation, the separation operation can be realized relatively easily, and the burrs at the connection position between the gel pen shell and the waste material at the nozzle after separation can also be reduced, thereby reducing the difficulty of subsequent grinding of the gel pen shell. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of a gel pen shell molding device in an embodiment of the utility model.
[0017] Figure 2 yes Figure 1 Top view of the middle master mold.
[0018] Figure 3 yes Figure 1 Front cross-sectional view of the middle mold.
[0019] Figure 4 yes Figure 3 A magnified view of some locations in the figure.
[0020] Figure 5 yes Figure 3 Schematic diagram of the working status of the middle cutting part.
[0021] Figure 6 yes Figure 5 A magnified view of some locations in the figure.
[0022] Figure 7 yes Figure 1 Front view of the middle male mold.
[0023] Figure 8 yes Figure 7 Bottom view of .
[0024] Fig. 9 It is a schematic diagram of the separation state of the male mold, the female mold and the base plate.
[0025] Fig.10 This is a partial location diagram of the back of the rack.
[0026] Among them, the frame 1, the limit frame 11, the sliding hole 12, the limit rod 13, the injection module 2, the mold 3, the male mold 31, the female mold 32, the plug rod 33, the slot 34, the cylindrical section 341, the contraction section 342, the cavity 35, the injection nozzle 36, the injection channel 37, the water outlet 38, the cutting part 39, the bottom plate 40, the cover plate 41, the spring 42, the first screw motor 5, the first connecting block 51, the second screw motor 6, and the second connecting block 61. DETAILED DESCRIPTION
[0027] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.
[0028] See also Figure 1-Figure 10The present embodiment is a gel pen shell molding device, comprising a frame 1, an injection molding module 2 and a mold 3, wherein the injection molding module 2 and the mold 3 are both arranged on the frame 1, the injection molding module 2 is used to input molten plastic into the mold 3, the mold 3 comprises a male mold 31 and a female mold 32, wherein the male mold 31 and the female mold 32 are respectively provided with a plurality of insertion rods 33 and a plurality of slots 34, wherein the insertion rods 33 are respectively adapted and inserted in the slots 34, the male mold 31 is provided with an injection nozzle 36, the female mold 32 is provided with a sprue 37 adapted to the injection nozzle 36, the sprue 37 is connected with the slot 34 through a sprue 38, the male mold 31 is provided with a cutting portion 39, and the cutting portion 39 cuts off the waste material at the sprue 38 when moving into the slot 34.
[0029] The utility model is provided by fitting the male mold 31 and the female mold 32 together, so that the insertion rod 33 is inserted into the slot 34, so that a cavity 35 corresponding to the shape of the gel pen shell is formed between the insertion rod 33 and the slot 34, and then the injection molding module 2 is used to input molten plastic into the sprue 37 through the injection nozzle 36, and the plastic flows into the cavity 35 through the water inlet 38 (such as Figure 3 , Figure 4 As shown in FIG. 3 , since the plastic in the cavity 35 cools and solidifies before the waste material at the nozzle 38, the cutting portion 39 can be driven to move into the slot 34 until the plastic in the cavity 35 is basically solidified while the waste material at the nozzle 38 is still in a softened state (the waiting time can be adjusted according to the cooling speed of the plastic used in actual production), so as to cut off the waste material at the nozzle 38 from the gel pen shell that has been basically solidified (as shown in FIG. 3 ). Figure 5 , Figure 6 As shown in the figure, the gel pen housing and the waste are separated. Since the waste at the water inlet 38 is in a softened state during the separation operation, the separation operation can be easily achieved, and the burrs at the connection position between the gel pen housing and the waste at the water inlet 38 after separation can be reduced, thereby reducing the difficulty of subsequent grinding of the gel pen housing.
[0030] See also Figure 2 The injection channel 37 and the water inlet 38 are opened on the upper end surface of the mother mold 32, the interval between the insertion rod 33 and the slot 34 corresponds to the thickness of the neutral pen shell, the cutting part 39 is cylindrical and is arranged at the upper end of the insertion rod 33, and the cutting part 39 is slidably inserted in the slot 34.
[0031] When the insert rod 33 is inserted into the slot 34, the lower end surface of the male mold 31 fits against the upper end surface of the female mold 32 to prevent the molten plastic from overflowing from the sprue 37. At this time, the cut-off portion 39 is located above the position of the sprue 38. When a single injection is completed and the plastic in the cavity 35 mentioned above is basically solidified and the waste at the sprue 38 is still in a softened state, the cut-off portion 39 is basically fitted with the inner wall of the slot 34, driving the cut-off portion 39 to slide into the slot 34 until the sprue 38 is blocked. At this time, the plastic at the sprue 38 is cut off by the shearing action of the cut-off portion 39, and finally the male mold 31 and the female mold 32 are separated, so that the waste in the sprue 37 can be more conveniently removed from the upper end surface of the female mold 32.
[0032] See also Figure 2 The injection channel 37 is X-shaped, and the slots 34 are symmetrically arranged at four positions of the injection channel 37 in front, behind, left and right directions along the center of the injection channel 37.
[0033] Plastic can be injected into multiple slots 34 at one time through the sprue 37, so that multiple gel pen shells can be produced in a single injection molding operation, thereby improving the efficiency of mass production; the shape of the sprue 37 and the distribution of the slots 34 can open more slots 34 on the mother mold 32, thereby fully utilizing the mother mold 32, and at the same time can reduce the volume of the sprue 37, thereby reducing the amount of waste generated and reducing production costs.
[0034] See also Figure 1 , Fig.10 The male mold 31 is fixed on the frame 1, and the female mold 32 is driven by the first screw motor 5 to move up and down in the vertical direction.
[0035] The first screw motor 5 drives the female mold 32 to move upward so that the insertion rod 33 can be inserted into the slot 34 to complete the subsequent injection molding operation. The first screw motor 5 then drives the female mold 32 to move downward so that the male mold 31 and the female mold 32 are separated, thereby facilitating the removal of the gel pen shell and waste materials in the female mold 32, thereby improving the degree of automation of the injection molding process of the utility model and facilitating mass production.
[0036] See also Figure 1 , Figure 3 as well as Figure 4 The male mold 31 includes a cover plate 41 arranged on the lower side thereof, the injection nozzle 36 and the insertion rod 33 are inserted through the cover plate 41, a spring 42 is arranged between the cover plate 41 and the male mold 31, and a limit frame 11 is arranged on the frame 1, and the spring 42 drives the lower end surface of the cover plate 41 to rest on the limit frame 11.
[0037] When the female mold 32 moves upward to realize the assembly between the male mold 31 and the female mold 32, the upper end surface of the female mold 32 abuts against the lower end surface of the cover plate 41, and the female mold 32 continues to move slightly upward for a short distance to drive the cover plate 41 to move upward, and the cover plate 41 is separated from the limit frame 11. At this time, the spring 42 is compressed to drive the cover plate 41 to abut against the female mold 32 to realize the close fit of the cover plate 41 and the female mold 32. The cover plate 41 is used to prevent the injection molten plastic from overflowing from the sprue 37, and the upper end surface of the cover plate 41 does not contact the lower end surface of the male mold 31. At this time, the distance between the cover plate 41 and the male mold 31 should be greater than the depth of the sprue 38, and then the injection molding operation is performed;
[0038] After a single injection molding is completed, the first screw motor 5 is started to drive the female mold 32 and the cover plate 41 to move upward a short distance as a whole, so that the cutting part 39 slides into the slot 34 relative to the female mold 32 until the cutting part 39 blocks the water outlet 38, thereby realizing the separation of the waste material from the molded gel pen shell. Finally, the first screw motor 5 drives the female mold 32 to move downward and separate from the male mold 31, and the cover plate 41 is reset and rests on the limit frame 11 again under the action of the spring 42. Through this structure, only the female mold 32 needs to be moved, while the positions of the male mold 31 and the cutting part 39 can be fixed unchanged, thereby reducing the parts that need to be driven in the utility model and reducing the complexity of the utility model.
[0039] See also Figure 3 The mother mold 32 includes a base plate 40 detachably mounted on its lower side, and the slot 34 includes a cylindrical section 341 and a contraction section 342 adapted to the shape of the gel pen housing, and the cylindrical section 341 and the contraction section 342 are respectively arranged in the mother mold 32 and the base plate 40.
[0040] After a single injection molding is completed, the waste material and the gel pen shell in the mother mold 32 have been separated by the cutting portion 39, and the gel pen shell cannot be taken out together by lifting the waste material upwards, which makes the removal step of the gel pen shell more difficult. At this time, the bottom plate 40 can be removed from the lower end of the mother mold 32, so that the gel pen shell can be detached from the mother mold 32 under the action of its own gravity, and a collection container can be placed under the bottom plate 40, and the gel pen shell can automatically fall into the collection container, thereby improving the convenience of removing and collecting the gel pen shell.
[0041] See also Figure 1 , Fig.10 The base plate 40 is driven by the second screw motor 6 to move up and down in the vertical direction.
[0042] When the female mold 32 moves upward and is plugged into the male mold 31, the first screw motor 5 and the second screw motor 6 respectively drive the female mold 32 and the bottom plate 40 to move vertically upward, and the moving speed of the bottom plate 40 is faster than the moving speed of the female mold 32, until the public mold 31 and the female mold 32, and the female mold 32 and the bottom plate 40 are completely fitted together, thereby completing the assembly of the mold 3. After a single injection molding is completed, the first screw motor 5 and the second screw motor 6 drive the female mold 32 and the bottom plate 40 to move vertically downward, respectively, and the moving speed of the bottom plate 40 is faster than the moving speed of the female mold 32, so that when the female mold 32 is separated from the male mold 31, the bottom plate 40 is also separated from the female mold 32, thereby improving the assembly and disassembly speed of the mold 3, thereby improving production efficiency.
[0043] See also Fig.10 , the first screw motor 5 and the second screw motor 6 are both arranged on the back of the frame 1, so as not to occupy the space on the front of the frame 1, reducing the risk of movement interference of the movable parts caused by too many parts on the front of the frame 1. At the same time, the space on the front of the frame 1 can be used to place collection containers, etc. Four long vertical sliding holes 12 are arranged on the frame 1, and the first connecting block 51 is connected to the screw of the first screw motor 5 through a thread, and the first connecting block 51 is fixedly connected to the mother mold 32 through the two outermost sliding holes 12, and the second connecting block 61 is connected to the screw of the second screw motor 6 through a thread, and the second connecting block 61 is fixedly connected to the bottom plate 40 through the two inner sliding holes 12 ( Fig.10 The screw of the second screw motor 6 is located at the rear side of the screw of the first screw motor 5), the first connecting block 51 and the second connecting block 61 are both mounted on two limit rods 13 vertically fixed on the frame 1, and the limit rods 13 limit the first connecting block 51 and the second connecting block 61 to move only in the vertical direction.
[0044] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.
Claims
1. A gel pen shell molding device, comprising a frame, an injection molding module and a mold, wherein the injection molding module and the mold are both arranged on the frame, and the injection molding module is used to input molten plastic into the mold, characterized in that: The mold includes a male mold and a female mold, and the male mold and the female mold are respectively provided with a plurality of insertion rods and a plurality of slots, and the insertion rods are adapted and inserted in the slots one by one. The male mold is provided with an injection nozzle, and the female mold is provided with a sprue adapted to the injection nozzle, and the sprue is connected with the slot through a water outlet. The male mold is provided with a cutting part, and the cutting part cuts off the waste material at the water outlet when it moves into the slot.
2. The gel pen shell molding device according to claim 1, characterized in that: The injection channel and the water inlet are opened on the upper end surface of the mother mold, the interval between the insertion rod and the slot corresponds to the thickness of the gel pen shell, the cutting part is cylindrical and arranged on the upper end of the insertion rod, and the cutting part is slidably inserted in the slot.
3. The gel pen shell molding device according to claim 1, characterized in that: The male mold is fixed on the frame, and the female mold is driven by the first screw motor to move up and down in the vertical direction.
4. The gel pen shell molding device according to claim 1, characterized in that: The mother mold comprises a bottom plate detachably mounted on its lower side, and the slot comprises a cylindrical section and a contraction section adapted to the shape of the gel pen shell, and the cylindrical section and the contraction section are respectively arranged in the mother mold and the bottom plate.
5. The gel pen shell molding device according to claim 4, characterized in that: The bottom plate is driven by a second screw motor to move up and down in a vertical direction.
6. The gel pen shell molding device according to claim 1, characterized in that: The male mold includes a cover plate arranged on its lower side, the injection nozzle and the insertion rod are inserted through the cover plate, a spring is arranged between the cover plate and the male mold, and a limit frame is arranged on the frame, and the spring drives the lower end surface of the cover plate to press against the limit clamp.
7. The gel pen shell molding device according to claim 1, characterized in that: The sprue is X-shaped, and the slots are symmetrically arranged at four positions of the sprue, front, back, left, and right, along the center of the sprue.
8. The gel pen shell molding device according to claim 3, characterized in that: The first screw motor and the second screw motor are both arranged on the back side of the frame, and the frame is provided with four vertically arranged long strip sliding holes. The screw of the first screw motor is connected with a first connecting block through a thread, and the first connecting block is fixedly connected to the mother mold through the two outermost sliding holes. The screw of the second screw motor is connected with a second connecting block through a thread, and the second connecting block is fixedly connected to the bottom plate through the two inner sliding holes. The first connecting block and the second connecting block are both sleeved on two limit rods vertically fixed on the frame.