Flat opening die

Abstract

The utility model discloses a flattening die which comprises a positioning sleeve, an upper bearing, a lower bearing, a central connecting rod, a connecting sleeve and a flattening cutter, an expansion piece is arranged at the top of the central connecting rod, the lower end of the connecting sleeve is rotatably connected to the lower portion of the central connecting rod through the lower bearing, and the upper end of the connecting sleeve is rotatably connected with the positioning sleeve through the upper bearing. The inner side of the positioning sleeve is matched with the expansion piece to form a positioning state and an unlocking state, the expansion piece expands in the positioning state and is matched with the positioning sleeve to position the cup opening, the expansion piece contracts in the unlocking state, and a cutting hole is formed in the side face of the connecting sleeve. The expansion piece on the top of the center connecting rod can be positioned or unlocked according to needs. After the cup tube is fixed through the cooperation of the expansion piece and the positioning sleeve in the inner direction and the outer direction, the center connecting rod drives the positioning sleeve and the expansion piece to rotate so as to drive the cup tube to rotate, the positioning sleeve and the connecting sleeve are connected through the bearings, the center connecting rod and the connecting sleeve are connected through the bearings, and therefore the connecting sleeve does not rotate, and then the plain end knife is controlled to cut the opening of the cup tube.

Description

Technical Field

[0001] The utility model relates to the technical field of flat-mouth molds, in particular to a flat-mouth mold. Background Art

[0002] During the production of cups, the cup body needs to be cut to remove excess parts, and during this process, the cup body needs to be positioned. Currently, to facilitate cutting, the positioning is mainly done by expanding and tightening the cup body from the inside out. This positioning effect is poor and it is easy to shift during the cutting process. Summary of the Invention

[0003] The utility model aims to solve the defect of poor positioning effect in the prior art and provides a new flat-mouth mold.

[0004] In order to solve the above technical problems, the present invention is implemented through the following technical solutions:

[0005] A flat-mouth mold includes a positioning sleeve, an upper bearing, a lower bearing, a center connecting rod, a connecting sleeve, and a flat-mouth knife. An expansion piece is provided on the top of the center connecting rod. The lower end of the connecting sleeve is rotatably connected to the lower part of the center connecting rod by means of the lower bearing. The upper end of the connecting sleeve is rotatably connected to the positioning sleeve by means of the upper bearing. The inner side of the positioning sleeve cooperates with the expansion piece to form a positioning state and an unlocking state. In the positioning state, the expansion piece expands and cooperates with the positioning sleeve to position the cup mouth. In the unlocking state, the expansion piece contracts. A cutting hole is provided on the side of the connecting sleeve, and the flat-mouth knife cooperates with the cutting hole.

[0006] By arranging a positioning sleeve, an upper bearing, a lower bearing, a center connecting rod, and a connecting sleeve, this utility model provides a flat-mouth mold with a stable structure and simple operation. The expansion piece at the top of the center connecting rod can be positioned or unlocked as needed, improving the mold's adaptability and flexibility. After the cup tube is secured by the expansion piece and the positioning sleeve, both internally and externally, the center connecting rod drives the positioning sleeve and the expansion piece to rotate, thereby driving the cup tube. The positioning sleeve and the connecting sleeve, as well as the center connecting rod and the connecting sleeve, are connected by bearings, preventing the connecting sleeve from rotating. This controls the flat-mouth knife to cut the mouth of the cup tube.

[0007] Preferably, in the flat-mouth mold described above, the expansion piece includes an elastic outer support piece, an upper pull block, and a lower pull block. A lower elastic clip is provided at the lower part of the elastic outer support piece, and a lower outer inclined surface is provided on the inner side surface of the lower elastic clip. The lower pull block is provided with a lower inner inclined surface. The lower pull block and the elastic outer support piece are sequentially sleeved on the center connecting rod from bottom to top. The top of the elastic outer support piece is limited by the upper pull block. A screw rod is provided through the inside of the center connecting rod, and the screw rod is threadedly connected to the upper pull block. When in the positioning state, the screw rod drives the upper pull block downward and drives the elastic outer support piece to move downward. When the elastic outer support piece is pressed downward, the lower elastic clip expands outward under the interaction force of the lower inner inclined surface and the lower outer inclined surface.

[0008] The design of the expansion piece, including the elastic outer support piece, the upper pull block and the lower pull block, as well as the corresponding inclined surface structure, enables the mold to stably fix the cup mouth in the positioning state, and conveniently release the molded product in the unlocked state, thereby improving production efficiency and operational convenience.

[0009] Preferably, in the flat-mouth mold described above, the upper pull block is provided with an upper inner bevel, the upper part of the elastic outer support piece is provided with an upper elastic clip, and the upper elastic clip is provided with an upper outer bevel. When in the positioning state, the screw drives the upper pull block to apply force to the elastic outer support piece, and the upper elastic clip is forced to expand outward and resist against the bottom of the cup body.

[0010] The upper inner slope of the upper pull block and the upper elastic clip design on the upper part of the elastic outer support further enhance the stability of the mold in the positioning state, ensure the close fit between the cup mouth and the bottom of the cup body, and improve the sealing performance of the product.

[0011] Preferably, in the above-mentioned flat-mouth mold, a flange is provided at the bottom of the central connecting rod.

[0012] The flange design at the bottom of the center connecting rod enhances the stability of the overall structure.

[0013] Preferably, in the flat-mouth mold described above, the central connecting rod is provided with a bearing step, and the lower bearing is placed on the bearing step.

[0014] The bearing step design of the center connecting rod enables the lower bearing to be stably installed on the step, reducing bearing wear and extending the service life of the mold.

[0015] Preferably, in the flat-mouth mold described above, a lower connecting portion with an L-shaped cross-section is provided at the bottom of the connecting sleeve, and the lower connecting portion includes a lower transverse connecting portion and a lower vertical annular connecting portion. The lower vertical annular connecting portion is connected to the outer ring of the lower bearing, and the lower transverse connecting portion is connected to the top of the lower bearing.

[0016] The L-shaped lower connecting portion design at the bottom of the connecting sleeve improves the connection strength and stability between the connecting sleeve and the lower bearing through the structure of the lower horizontal connecting portion and the lower vertical annular connecting portion.

[0017] Preferably, in the flat-mouth mold described above, the lower transverse connecting portion is provided with a lower relief groove, and the position of the lower relief groove corresponds to the top of the lower bearing inner ring.

[0018] The lower relief groove design of the lower transverse connecting part provides sufficient space for the inner ring of the lower bearing, avoiding interference and ensuring the normal operation of the lower bearing.

[0019] Preferably, in the flat-mouth mold described above, the bearing step abuts against the bottom of the inner ring of the lower bearing.

[0020] The offset design between the bearing step and the bottom of the lower bearing inner ring further strengthens the fixation of the lower bearing, improves the stability and durability of the mold, and avoids interference, ensuring the normal operation of the lower bearing.

[0021] Preferably, in the flat-mouth mold described above, an upper connecting portion with an L-shaped cross-section is provided on the top of the connecting sleeve, the upper connecting portion includes an upper transverse connecting portion and an upper vertical annular connecting portion, the upper vertical annular connecting portion is connected to the upper bearing outer ring, the upper transverse connecting portion is provided with an upper giveway groove, the position of the upper giveway groove corresponds to the position of the upper bearing inner ring, and the upper transverse connecting portion is connected to the bottom of the upper bearing outer ring.

[0022] The L-shaped upper connection design on the top of the connecting sleeve ensures the precise installation and stable operation of the upper bearing through the upper horizontal connection and the upper vertical ring connection, as well as the setting of the upper clearance groove, thereby improving the overall performance of the mold.

[0023] Preferably, in the above-mentioned flat-mouth mold, the positioning sleeve is connected to the side surface and the top surface of the inner ring of the upper bearing.

[0024] The connection design between the locating sleeve and the side and top surfaces of the upper bearing inner ring avoids interference and ensures the normal operation of the upper bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an exploded view of the utility model;

[0026] Figure 2 It is a cross-sectional view of the utility model;

[0027] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0028] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0029] Figure 5 It is a structural schematic diagram of the expansion piece in the utility model. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-5 The present invention is further described in detail with reference to the following specific embodiments, but they are not intended to limit the present invention: Example

[0031] A flat-mouth mold includes a positioning sleeve 2, an upper bearing 3, a lower bearing 4, a center connecting rod 5, a connecting sleeve 6, and a flat-mouth knife 8. An expansion piece 7 is provided on the top of the center connecting rod 5. The lower end of the connecting sleeve 6 is rotatably connected to the lower part of the center connecting rod 5 by means of the lower bearing 4. The upper end of the connecting sleeve 6 is rotatably connected to the positioning sleeve 2 by means of the upper bearing 3. The inner side of the positioning sleeve 2 cooperates with the expansion piece 7 to form a positioning state and an unlocking state. In the positioning state, the expansion piece 7 expands and cooperates with the positioning sleeve 2 to position the cup mouth. In the unlocking state, the expansion piece 7 contracts. A cutting hole 66 is provided on the side of the connecting sleeve 6, and the flat-mouth knife 8 cooperates with the cutting hole 66.

[0032] Preferably, the expansion piece 7 includes an elastic outer support piece 71, an upper pull block 72, and a lower pull block 73. The lower part of the elastic outer support piece 71 is provided with a lower elastic clip 711, the inner side surface of the lower elastic clip 711 is provided with a lower outer inclined surface 712, and the lower pull block 73 is provided with a lower inner inclined surface 731. The lower pull block 73 and the elastic outer support piece 71 are sequentially sleeved on the center connecting rod 5 from bottom to top, and the top of the elastic outer support piece 71 is limited by the upper pull block 72. A screw rod 51 is provided through the inside of the center connecting rod 5, and the screw rod 51 is threadedly connected to the upper pull block 72. When in the positioning state, the screw rod 51 drives the upper pull block 72 downward and drives the elastic outer support piece 71 to move downward. When the elastic outer support piece 71 is pressed downward, the lower elastic clip 711 expands outward under the interaction force of the lower inner inclined surface 731 and the lower outer inclined surface 712.

[0033] Preferably, the upper pull block 72 is provided with an upper inner inclined surface 721, the upper part of the elastic outer support member 71 is provided with an upper elastic clip 713, and the upper elastic clip 713 is provided with an upper outer inclined surface 714. When in the positioning state, the screw rod 51 drives the upper pull block 72 to apply force to the elastic outer support member 71, and the upper elastic clip 713 is expanded outward under the force and resists against the bottom of the cup body.

[0034] Preferably, a flange 52 is provided at the bottom of the central connecting rod 5 .

[0035] Preferably, the central connecting rod 5 is provided with a bearing step 53 , and the lower bearing 4 is placed on the bearing step 53 .

[0036] Preferably, a lower connecting portion with an L-shaped cross-section is provided at the bottom of the connecting sleeve 6, and the lower connecting portion includes a lower transverse connecting portion 61 and a lower vertical annular connecting portion 62. The lower vertical annular connecting portion 62 is connected to the outer ring of the lower bearing 4, and the lower transverse connecting portion 61 is connected to the top of the lower bearing 4.

[0037] Preferably, the lower transverse connecting portion 61 is provided with a lower paving groove 611 , and the position of the lower paving groove 611 corresponds to the top of the inner ring of the lower bearing 4 .

[0038] Preferably, the bearing step 53 abuts against the bottom of the inner ring of the lower bearing 4 .

[0039] Preferably, an upper connecting portion with an L-shaped cross-section is provided on the top of the connecting sleeve 6, and the upper connecting portion includes an upper transverse connecting portion 63 and an upper vertical annular connecting portion 64. The upper vertical annular connecting portion 64 is connected to the outer ring of the upper bearing 3, and the upper transverse connecting portion 63 is provided with an upper makeshift groove 631. The position of the upper makeshift groove 631 corresponds to the position of the inner ring of the upper bearing 3, and the upper transverse connecting portion 63 is connected to the bottom of the outer ring of the upper bearing 3.

[0040] Preferably, the positioning sleeve 2 is connected to the side surface and the top surface of the inner ring of the upper bearing 3.

[0041] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application for the present invention should fall within the scope of the present invention.

Claims

1. A flat die, characterized in that: The invention comprises a positioning sleeve (2), an upper bearing (3), a lower bearing (4), a center connecting rod (5), a connecting sleeve (6), and a flat-edge knife (8). An expansion piece (7) is provided on the top of the center connecting rod (5). The lower end of the connecting sleeve (6) is rotatably connected to the lower part of the center connecting rod (5) by means of the lower bearing (4). The upper end of the connecting sleeve (6) is rotatably connected to the positioning sleeve (2) by means of the upper bearing (3). The inner side of the positioning sleeve (2) cooperates with the expansion piece (7) to form a positioning state and an unlocking state. In the positioning state, the expansion piece (7) expands and cooperates with the positioning sleeve (2) to position the cup mouth. In the unlocking state, the expansion piece (7) contracts. A cutting hole (66) is provided on the side of the connecting sleeve (6), and the flat-edge knife (8) cooperates with the cutting hole (66).

2. A flat die according to claim 1, characterized in that: The expansion member (7) includes an elastic outer support member (71), an upper pull block (72), and a lower pull block (73). The lower portion of the elastic outer support member (71) is provided with a lower elastic clip (711). The inner side surface of the lower elastic clip (711) is provided with a lower outer inclined surface (712). The lower pull block (73) is provided with a lower inner inclined surface (731). The lower pull block (73) and the elastic outer support member (71) are sequentially sleeved on the central connecting rod (5) from bottom to top. The elastic outer support member (71) The top is limited by the upper pull block (72), and a screw rod (51) is provided inside the central connecting rod (5), and the screw rod (51) is threadedly connected to the upper pull block (72). When in the positioning state, the screw rod (51) drives the upper pull block (72) downward and drives the elastic outer support member (71) to move downward. When the elastic outer support member (71) is pressed downward, the lower elastic clip (711) expands outward under the interaction force of the lower inner inclined surface (731) and the lower outer inclined surface (712).

3. A flat die according to claim 2, characterized in that: The upper pull block (72) is provided with an upper inner inclined surface (721), the upper part of the elastic outer support member (71) is provided with an upper elastic clip (713), and the upper elastic clip (713) is provided with an upper outer inclined surface (714). When in the positioning state, the screw rod (51) drives the upper pull block (72) to apply force to the elastic outer support member (71), and the upper elastic clip (713) is forced to expand outward and resist the bottom of the cup body.

4. A flat die according to claim 2, characterized in that: A flange (52) is provided at the bottom of the central connecting rod (5).

5. The flat die according to claim 1, characterized in that: The central connecting rod (5) is provided with a bearing step (53), and the lower bearing (4) is placed on the bearing step (53).

6. A flat die according to claim 5, characterized in that: The bottom of the connecting sleeve (6) is provided with a lower connecting portion with an L-shaped cross section, and the lower connecting portion includes a lower transverse connecting portion (61) and a lower vertical annular connecting portion (62). The lower vertical annular connecting portion (62) is connected to the outer ring of the lower bearing (4), and the lower transverse connecting portion (61) is connected to the top of the lower bearing (4).

7. A flat die according to claim 6, characterized in that: The lower transverse connecting portion (61) is provided with a lower paving groove (611), and the position of the lower paving groove (611) corresponds to the top of the inner ring of the lower bearing (4).

8. The flat die according to claim 7, characterized in that: The bearing step (53) abuts against the bottom of the inner ring of the lower bearing (4).

9. The flat die according to claim 8, characterized in that: The top of the connecting sleeve (6) is provided with an upper connecting portion with an L-shaped cross section, the upper connecting portion includes an upper transverse connecting portion (63) and an upper vertical annular connecting portion (64), the upper vertical annular connecting portion (64) is connected to the outer ring of the upper bearing (3), the upper transverse connecting portion (63) is provided with an upper paving groove (631), the position of the upper paving groove (631) corresponds to the position of the inner ring of the upper bearing (3), and the upper transverse connecting portion (63) is connected to the bottom of the outer ring of the upper bearing (3).

10. The flat die according to claim 9, characterized in that: The positioning sleeve (2) is connected to the side surface and top surface of the inner ring of the upper bearing (3).

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