A plastic cup production mold

Abstract

The utility model discloses a plastic cup production mould belongs to mould technical field, include: upper die and lower die, the outside of upper die and lower die is provided with a plurality of limit strips, the limit is provided with fixed base and sliding seat, and the buffer spring is arranged between fixed base and sliding seat, when the upper and lower moulds are closed, the upper and lower sliding seats are first than the butt joint of upper and lower moulds, utilize the elasticity of buffer spring, can buffer the impact force of closing mould, play the protection function. When replacing the spring regularly, can replace just by disassembling the sliding seat, simple and convenient, can improve the work efficiency of spring replacement. At the same time, the exposed fixed base and sliding seat are convenient for installing contact inductive lamp sensor, and the mould detection is convenient, and the safety and accuracy of production can be improved.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a plastic cup production mold. Background Technology

[0002] In the industrial production of plastic cups, the performance of the production mold plays a crucial role in product quality and production efficiency. The impact force generated when the upper and lower molds close can affect the service life of the mold and the molding quality of the plastic cup. To solve this problem, existing technologies typically use a spring as a buffer structure between the upper and lower molds of the plastic cup mold. The elastic deformation of the spring absorbs the impact force during mold closing, thereby reducing the damage to the mold and the product. However, due to the frequent compression and rebound of the spring, its internal metal structure gradually fatigues, leading to a decrease in rebound performance and a weakening of the buffering effect, which in turn affects the molding accuracy of the plastic cup and the service life of the mold. Furthermore, the springs in existing molds are usually built into the internal space of the upper and lower molds. When the spring needs to be replaced, the entire mold must be disassembled, which is a complex and cumbersome process that not only consumes a lot of time and labor costs but also causes long-term downtime of the production line, seriously affecting production efficiency. Therefore, this utility model provides a plastic cup production mold. Utility Model Content

[0003] The purpose of this invention is to provide a mold for producing plastic cups.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows:

[0005] A plastic cup production mold includes: an upper mold and a lower mold; the upper mold is correspondingly disposed on one side of the lower mold, and a concave mold is disposed at the center of the side facing the lower mold; the lower mold is disposed on the side facing the upper mold, and a convex mold is disposed thereon; the convex mold can be fitted into the concave mold and form a plastic cup molding injection cavity with the concave mold;

[0006] The outer surfaces of the upper mold and the lower mold are provided with a plurality of limiting strips; the two ends of the limiting strips extend to the middle of the upper mold and the middle of the lower mold respectively, and are detachably and fixedly connected to the upper mold and the lower mold by bolts;

[0007] The limiting strip is provided with a fixing seat at both ends; the fixing seat is pressed onto the limiting strip, and a connecting part is provided at the first end; a through hole corresponding to the bolt is opened on the connecting part; the fixing seat is recessed at its second end face to form a first mounting groove;

[0008] A sliding seat is slidably disposed on the limiting strip corresponding to the fixed seat; the end face of the sliding seat facing the fixed seat is recessed to form a second mounting groove corresponding to the first mounting groove; a buffer spring is disposed between the fixed seat and the sliding seat; the two ends of the buffer spring extend into the first mounting groove and the second mounting groove respectively to abut against the fixed seat and the sliding seat; a sliding strip is disposed on the sliding seat; the sliding strip extends to the fixed seat and is slidably connected thereto, and the sliding range is such that the buffer spring is always in a compressed state.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme, the number of limiting strips is four, which are arranged at the four corners of the upper mold and the lower mold.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme, the limiting strip is provided with a slot arranged along its length; the bolt passes through the slot and cooperates with the upper mold and the lower mold.

[0011] Based on the above scheme and as a preferred embodiment of the above scheme, the bottom of the sliding seat is provided with a protrusion; the protrusion is slidably fitted into the slot.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme, the number of sliding bars is two, which are symmetrically distributed along the center line of the sliding seat.

[0013] Based on the above scheme and as a preferred embodiment, the sliding bar has a through groove arranged along its length; the fixed base has a screw hole; the screw hole is fitted with a fixing bolt, which is inserted into the through groove to connect the sliding bar and the fixed base.

[0014] Based on the above scheme and as a preferred embodiment of the above scheme, the number of screw holes is several, and they are evenly distributed along the length direction of the fixing seat.

[0015] Based on the above scheme and as a preferred embodiment of the above scheme, the shank of the fixing bolt includes a threaded portion that mates with the screw hole and a smooth portion that mates with the through groove.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: Limiting strips are provided on the outer surfaces of the upper and lower molds. Fixed seats and sliding seats are provided on the limiting strips, and buffer springs are provided between the fixed seats and sliding seats. When the upper and lower molds close, the sliding seats engage with the molds first. The elasticity of the buffer springs buffers the impact force of mold closing, thus providing protection. When replacing the springs periodically, the sliding seats can be disassembled for replacement, which is simple and convenient, improving the efficiency of spring replacement. At the same time, the exposed fixed seats and sliding seats facilitate the installation of contact sensor lamps, making mold detection convenient and improving production safety and accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 for Figure 1 Enlarged view of a portion of the diagram.

[0019] Figure 3 This is a partial structural diagram of the present utility model.

[0020] Figure 4 This is an exploded view of part of the structure of this utility model.

[0021] In the diagram: 1. Upper mold; 2. Lower mold; 3. Limiting strip; 4. Bolt; 5. Fixing seat; 6. Connecting part; 7. Sliding seat; 8. Buffer spring; 9. Sliding strip; 10. Slot; 11. Protrusion; 12. Through slot; 13. Screw hole; 14. Fixing bolt; 141. Threaded part; 142. Smooth part. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0023] like Figure 1 As shown, a plastic cup production mold includes an upper mold 1 and a lower mold 2. The upper mold 1 is correspondingly disposed on one side of the lower mold 2, and a cavity is disposed at the center of the side facing the lower mold 2. A punch is disposed on the side of the lower mold 2 facing the upper mold 1. The punch can be fitted into the cavity and together with the cavity to form a plastic cup molding injection cavity. Guide pillars are provided between the upper and lower molds to ensure precise alignment of the upper and lower molds and to improve the stability of the movement of the upper and lower molds.

[0024] Several limiting strips 3 are provided on the outer surfaces of the upper mold 1 and the lower mold 2. The two ends of the limiting strips 3 extend to the middle of the upper mold 1 and the middle of the lower mold 2, respectively, and are detachably fixed to the upper mold 1 and the lower mold 2 by bolts 4.

[0025] Specifically, there are four limiting strips 3, which are evenly distributed at the four corners of the upper mold 1 and the lower mold 2 to provide a good buffering effect. The limiting strips 3 have slots 10 arranged along their length. Bolts 4 pass through the slots 10 and cooperate with the upper mold 1 and the lower mold 2 to achieve a detachable and fixed connection between the limiting strips 3 and the upper and lower molds.

[0026] like Figures 2 to 4 As shown, both ends of the limiting strip 3 are provided with fixing seats 5, which are pressed onto the limiting strip 3. The first end is provided with a connecting part 6, and the connecting part 6 has a through hole corresponding to the bolt 4. The fixing seat 5 is fixedly connected to the limiting strip 3 and the upper and lower molds by the bolt 4.

[0027] A first mounting groove is formed by recessing the second end face of the fixed base 5. A sliding seat 7 is slidably disposed on the limiting strip 3 corresponding to the fixed base 5. The end face of the sliding seat 7 facing the fixed base 5 is recessed to form a second mounting groove corresponding to the first mounting groove.

[0028] like Figure 3 As shown, a buffer spring 8 is provided between the fixed seat 5 and the sliding seat 7. Both ends of the buffer spring 8 extend into the first mounting groove and the second mounting groove, respectively, and abut against both the fixed seat 5 and the sliding seat 7, thus elastically connecting them. The two ends of the buffer spring 8 extending into the two mounting grooves prevent it from falling off. Preferably, the position of the fixed seat 5 satisfies the condition that the sliding seat 7 can slide to a position lower than the top surfaces of the upper mold 1 and the lower mold 2, ensuring that the sliding seat 7 does not affect the docking of the upper and lower molds. A soft pad is provided on the end face of the sliding seat 7 facing the opposite sliding seat 7 to reduce the impact of collision when the two sliding seats 7 dock.

[0029] Meanwhile, a protrusion 11 is provided at the bottom of the sliding seat 7. The protrusion 11 slides within the slot 10 to improve the stability of the sliding of the sliding seat 7 and also has a limiting function.

[0030] A sliding strip 9 is provided on the sliding seat 7, extending to the fixed seat 5 and slidably connected thereto. The sliding range is sufficient to keep the buffer spring 8 in a compressed state at all times. Specifically, there are two sliding strips 9, symmetrically distributed along the center line of the sliding seat 7 to ensure the stability of the connection. A through groove 12 is provided on the sliding strip 9 along its length. A screw hole 13 is provided on the fixed seat 5, which can be fitted with a fixing bolt 14. The fixing bolt 14 is inserted into the through groove 12 to connect the sliding strip 9 and the fixed seat 5. The sliding range of the fixing bolt 14 within the through groove 12 is the movement range of the sliding strip 9 and the sliding seat 7.

[0031] Preferably, such as Figure 4 As shown, there are several screw holes 13, evenly distributed along the length of the fixed base 5. The fixing bolts 14 can be fitted into the screw holes 13 at different positions to change the sliding range of the sliding strip 9 and the sliding base 7.

[0032] The shank of the fixing bolt 14 includes a threaded portion 141 that mates with the screw hole 13 and a smooth portion 142 that mates with the through groove 12. The diameter of the threaded portion 141 is slightly smaller than the diameter of the smooth portion 142, and it is used to mate with the screw hole 13. The diameter of the smooth portion 142 is approximately equal to the width of the through groove 12.

[0033] When the buffer spring 8 needs to be replaced, use a tool to turn the fixing bolt 14 to loosen the connection between the sliding seat 7 and the fixed seat 5, remove the old buffer spring 8, install the new buffer spring 8 between the sliding seat 7 and the fixed seat 5, and then screw the fixing bolt 14 back on.

[0034] A sensor can be installed on the fixed base 5. Using the position of the sliding seat 7 when the upper and lower molds are closed as a reference, the sensor can monitor whether the sliding seat 7 moves to the position each time the mold is closed, thereby determining whether the mold closure is complete.

[0035] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A mold for producing plastic cups, characterized in that, include: Upper mold (1) and lower mold (2); the upper mold (1) is correspondingly disposed on one side of the lower mold (2), and a concave mold is disposed at the center of the side facing the lower mold (2); the lower mold (2) is disposed on the side facing the upper mold (1); the convex mold can be fitted into the concave mold and form a plastic cup molding injection cavity with the concave mold; The outer surfaces of the upper mold (1) and the lower mold (2) are provided with a number of limiting strips (3); the two ends of the limiting strips (3) extend to the middle of the upper mold (1) and the middle of the lower mold (2) respectively, and are detachably fixed to the upper mold (1) and the lower mold (2) by bolts (4); The limiting strip (3) is provided with a fixing seat (5) at both ends; the fixing seat (5) is pressed on the limiting strip (3), and a connecting part (6) is provided at the first end; a through hole corresponding to the bolt (4) is opened on the connecting part (6); the fixing seat (5) is recessed at its second end face to form a first mounting groove; A sliding seat (7) is slidably disposed on the limiting strip (3) corresponding to the fixed seat (5); the end face of the sliding seat (7) facing the fixed seat (5) is recessed to form a second mounting groove corresponding to the first mounting groove; a buffer spring (8) is disposed between the fixed seat (5) and the sliding seat (7); the two ends of the buffer spring (8) extend into the first mounting groove and the second mounting groove respectively, so as to abut against the fixed seat (5) and the sliding seat (7); a sliding strip (9) is disposed on the sliding seat (7); the sliding strip (9) extends to the fixed seat (5) and is slidably connected to it, and the sliding range is sufficient to keep the buffer spring (8) in a compressed state at all times.

2. The plastic cup production mold according to claim 1, characterized in that, The number of the limiting strips (3) is four, which are arranged at the four corners of the upper mold (1) and the lower mold (2).

3. The plastic cup production mold according to claim 1, characterized in that, The limiting strip (3) has a slot (10) arranged along its length; the bolt (4) passes through the slot (10) and cooperates with the upper mold (1) and the lower mold (2).

4. A plastic cup production mold according to claim 3, characterized in that, The bottom of the sliding seat (7) is provided with a protrusion (11); the protrusion (11) is slidably fitted in the slot (10).

5. A plastic cup production mold according to claim 1, characterized in that, There are two sliding bars (9), which are symmetrically distributed along the center line of the sliding seat (7).

6. A plastic cup production mold according to claim 1 or 5, characterized in that, The sliding bar (9) has a through groove (12) arranged along its length; the fixed seat (5) has a screw hole (13); the screw hole (13) is fitted with a fixing bolt (14), which is inserted into the through groove (12) to realize the connection between the sliding bar (9) and the fixed seat (5).

7. A plastic cup production mold according to claim 6, characterized in that, The number of screw holes (13) is several, and they are evenly distributed along the length of the fixing seat (5).

8. A plastic cup production mold according to claim 6, characterized in that, The shank of the fixing bolt (14) includes a threaded portion (141) that mates with the screw hole (13) and a smooth portion (142) that mates with the through groove (12).

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