Cup cover and forming mold thereof

Abstract

The invention relates to a cup cover, wherein a straw insertion hole is arranged on the top of the cup cover, and a dust cover sheet is arranged at the straw insertion hole, wherein the outer edge of the dust cover sheet is connected with the edge of the insertion hole through two external connecting parts, and the dust cover sheet is divided into two half-petals of dust cover sheets by a punching line in the middle; the dust cover sheet of the cup cover adopts a double-opening structure which is opened from the middle to both sides, so that the height of the dust cover sheet when opened is only half of the inner diameter of the insertion hole, which can well solve the problem that a sealed beverage straw cannot be directly inserted.

Description

Technical Field

[0001] The invention relates to a cup cover of a disposable beverage cup, in particular to a cup cover and a forming mold thereof. Background Art

[0002] At present, disposable beverage cups are used in large quantities. In order to facilitate use, a straw insertion hole is often punched out on the top surface of the cup cover. In order to prevent dust from entering the cup cover, a dust cover sheet is left when the mold is in the insertion hole. A C-shaped notch is punched out on the outer edge of the dust cover sheet, leaving a very small connecting portion connected to the edge of the insertion hole. When using the straw, the dust cover sheet can be opened to the inside of the insertion hole by gently squeezing the dust cover sheet; it is very convenient to use.

[0003] In order to preserve some beverages for a longer time, the mouth of the cup is sealed with a film and then the cup lid is put on. Since the height of the hole from the sealing film is very low, and some straws such as milk tea have large diameters, when the inner diameter of the hole is greater than the height of the hole from the sealing film, when the straw pushes open the dust cover, the dust cover will be blocked by the sealing film and cannot be opened further, resulting in the problem that the straw is blocked by the dust cover and cannot break through the sealing film. Therefore, the size and height of the cup lid hole also need to be considered during production, and the versatility is limited. Summary of the invention

[0004] The purpose of the present invention is to provide a cup cover, the dust cover of the cup cover adopts a double-opening structure that opens from the middle to both sides, so that the height of the dust cover when opened is only half of the inner diameter of the insertion hole, which can well solve the problem that the sealed beverage straw cannot be directly inserted.

[0005] To achieve the above purpose, the following technical solutions are adopted:

[0006] A cup cover is provided with a straw insertion hole at the top of the cup cover, and a dust cover is provided at the straw insertion hole. The feature is that the outer edge of the dust cover is connected to the edge of the insertion hole through two external connecting parts, and the dust cover is divided into two half-petals by a punching line in the middle.

[0007] There is an intermediate connecting portion in the middle of the punching line to divide the punching line into two sections, and the two half-petal dust cover sheets are connected as a whole through the intermediate connecting portion.

[0008] The punching line is a punching straight line, and the two external connecting parts are distributed on both sides of the punching straight line and are symmetrically arranged.

[0009] A forming mold for making the cup cover comprises an upper template and a lower template, the upper and lower templates are matched with each other through guide pillars and guide pillar holes, a plurality of cores are arranged on the upper template, a plurality of cavities corresponding to the cores are arranged on the lower template, the cavities and cores are arranged into one or several groups, and is characterized in that: a buffer mechanism in the up and down directions is arranged between the core and the upper template, an upper through hole penetrating the core up and down is opened on the core, an upper punch is arranged at the upper through hole, the upper end of the upper punch is fixedly connected to the upper template, and the upper punch is accommodated in the through hole; a lower through hole is opened at a position corresponding to the upper through hole inside the cavity, a lower punch is arranged in the lower through hole, and the lower punch is fixedly connected to the cavity or the lower template; when the upper and lower templates are closed, the cavity compresses the core upward so that the upper punch is exposed from the upper through hole and cooperates with the end of the lower punch.

[0010] The buffer mechanism includes a connecting seat, a buffer column and a buffer spring. The connecting seat is fixedly connected to the upper template. A plurality of guide holes are opened on the connecting seat. A limit block is arranged at the upper end of the buffer column. The outer diameter of the limit block is larger than the aperture of the guide hole. A buffer hole is arranged at the position of the upper template corresponding to the guide hole. The limit block is accommodated in the buffer hole. The buffer column passes downward through the guide hole and the buffer spring in sequence and is fixedly connected to the core.

[0011] The upper punch comprises an upper sleeve and an upper punch body, and the upper punch body is accommodated in the upper sleeve; the lower punch comprises a lower sleeve and a lower punch body, and the lower punch body is accommodated in the lower sleeve.

[0012] An upper cutout is provided at the lower end of the upper punch body, and a lower cutout is provided at the upper end of the lower punch body. The upper and lower cutouts are offset from each other, the lower end surface of the upper punch body matches the shape of the lower cutout, and the upper end surface of the lower punch body matches the shape of the upper cutout. Notches are provided at the outer edges of the lower end surface of the upper punch body and the upper end surface of the lower punch body.

[0013] A connecting groove is also provided on the lower end surface of the upper punch body, and the connecting groove is communicated with the upper cutout.

[0014] The width of the connecting groove is smaller than the width of the notch.

[0015] The present invention divides the dust cover sheet at the drinking cup cover insertion hole into two half-petal dust cover sheets, so that when the dust cover sheet is pushed open, the height of the dust cover sheet is reduced by half, which can well solve the problem that the dust cover sheet of the existing large-aperture insertion hole is blocked by the sealing film when it is pushed open; at the same time, in order to realize the half-petal dust cover sheet opened to both sides on the cup cover, the structure of the punch is improved on the forming mold of the cup cover, and cuts are opened on the impact end faces of the upper and lower punches, and the upper and lower impact end faces are staggered with each other, the impact end faces are matched with the cuts, and at the same time, a connecting groove communicating with the cuts is opened on the impact end faces, which has the characteristics of reasonable structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the cup cover of the present invention;

[0017] Figure 2 For the present invention Figure 1 The enlarged schematic diagram at A in the middle;

[0018] Figure 3 It is a structural schematic diagram of the cup cover forming mold of the present invention;

[0019] Figure 4 This is a structural schematic diagram of the upper mold of the cup cover forming mold of the present invention;

[0020] Figure 5 This is a structural schematic diagram of the lower mold of the cup cover forming mold of the present invention;

[0021] Figure 6 It is a structural schematic diagram of the upper template of the present invention;

[0022] Figure 7 It is a schematic diagram of the cooperation between the core and the cavity of the present invention;

[0023] Figure 8 It is a structural schematic diagram of the core of the present invention;

[0024] Fig. 9 It is a structural schematic diagram of the cavity of the present invention;

[0025] Fig.10 It is a schematic diagram of the cooperation of the upper and lower punches of the present invention;

[0026] Fig.11 It is a schematic diagram of the cooperation of the upper and lower punch bodies of the present invention;

[0027] Fig.12 It is a schematic structural diagram of the upper punch body of the present invention. DETAILED DESCRIPTION

[0028] like Figure 1-11 As shown,

[0029] A cup cover, with a straw insertion hole at the top of the cup cover 1, and a dust cover sheet 11 is arranged at the straw insertion hole, characterized in that: the outer edge of the dust cover sheet 11 is connected to the edge of the insertion hole through two external connecting parts 12, and the dust cover sheet 11 is divided into two half-petal dust cover sheets by a punching line 13 in the middle; the punching line 13 is a punching straight line, and the two external connecting parts 12 are distributed on both sides of the punching straight line and are symmetrically arranged; there is an intermediate connecting part 14 in the middle of the punching line 13 to divide the punching line 13 into two sections, and the two half-petal dust cover sheets are connected as a whole through the intermediate connecting part 14.

[0030] A forming mold for making the cup cover comprises an upper template 2 and a lower template 3, the upper and lower templates are matched by guide pillars 4 and guide pillar holes, a plurality of cores 5 are arranged on the upper template 2, a plurality of cavities 6 corresponding to the cores 5 are arranged on the lower template 3, the cavities 6 and the cores 5 are linearly arranged into one or several groups, and is characterized in that: a buffer mechanism in the up and down directions is arranged between the core 5 and the upper template 2, an upper through hole 51 penetrating the core 5 up and down is opened on the core 5, an upper punch 7 is arranged at the upper through hole 51, the upper end of the upper punch 7 is fixedly connected to the upper template 2, and the upper punch 7 is accommodated in the through hole; a lower through hole is opened at a position corresponding to the upper through hole inside the cavity 6, a lower punch 8 is arranged in the lower through hole, and the lower punch 8 is fixedly connected to the cavity 6 or the lower template 3; when the upper and lower templates are molded, the cavity 6 compresses the core 5 upward so that the upper punch 7 is exposed from the upper through hole and cooperates with the end of the lower punch 8.

[0031] The buffer mechanism includes a connecting seat 91, a buffer column 92 and a buffer spring 93. The connecting seat 91 is fixedly connected to the upper template 2. A plurality of guide holes 95 are provided on the connecting seat 91. A limit block 94 is provided at the upper end of the buffer column 92. The outer diameter of the limit block 94 is larger than the aperture of the guide hole 95. A buffer hole 21 is provided at a position of the upper template 2 corresponding to the guide hole 95. The limit block 94 is accommodated in the buffer hole 21 and can move up and down. The buffer column 92 passes downward through the guide hole 95 and the buffer spring 93 in sequence and is fixedly connected to the core 5.

[0032] The upper punch 7 comprises an upper sleeve 71 and an upper punch body 72, and the upper punch body 72 is accommodated in the upper sleeve 71; the lower punch 8 comprises a lower sleeve 81 and a lower punch body 82, and the lower punch body 82 is accommodated in the lower sleeve 81; an upper cutout 73 is provided at the lower end of the upper punch body 72, and a lower cutout 83 is provided at the upper end of the lower punch body 82, the upper and lower cutouts are staggered with each other, the lower end surface of the upper punch body 72 matches the shape of the lower cutout 83, and the upper end surface of the lower punch body 82 matches the shape of the upper cutout 73, and notches 75 are provided at the outer edges of the lower end surface of the upper punch body 72 and the upper end surface of the lower punch body 82; a connecting groove 74 is also provided at the lower end surface of the upper punch body 72, and the connecting groove 74 is communicated with the upper cutout 73; the width of the connecting groove 74 is smaller than the width of the notch 75.

[0033] The present invention divides the dust cover sheet at the insertion hole of the beverage cup cover into two half-petal dust cover sheets, so that when the dust cover sheet is pushed open, the height of the dust cover sheet is reduced by half, which can well solve the problem that the dust cover sheet of the existing large-aperture insertion hole is blocked by the sealing film when it is pushed open; in order to achieve the dustproof effect of the dust cover sheet at the insertion hole, the two half-petal dust cover sheets are provided with an intermediate connecting part, and the intermediate connecting part connects the two half-petal dust cover sheets into one, so that the two half-petal dust cover sheets will not be misaligned up and down and lose the dustproof effect.

[0034] At the same time, in order to realize the half-flap dust cover that opens to both sides on the cup lid, the structure of the punch is improved on the forming mold of the cup lid 1, and incisions are opened on the impact end faces of the upper and lower punches, and the upper and lower impact end faces are staggered with each other, the impact end faces cooperate with the incisions, and notches 75 are opened on the outer edge of the lower end face of the upper punch body 72 and the upper end face of the lower punch body 82, and a connecting groove communicating with the incision is opened on the impact end face, so that the punched dust cover is two half-flap dust cover, and the two half-flaps are connected as a whole through the middle connecting part, and the two sides of the two half-flaps are connected to each other through the external connecting part 12. At the same time, the width of the connecting groove 74 of the present invention is smaller than the width of the notch 75; the width of the external connecting part is larger than the width of the middle connecting part. When the straw pushes open the dust cover, the middle connecting part is automatically disconnected because the strength of the external connecting parts on both sides is greater, thereby making the two half-flap dust cover open to both sides.

[0035] In addition, a buffer mechanism is provided on one of the core and the cavity of the present invention to realize the process of first closing the mold and then punching, thereby ensuring the consistency of the product, and having the characteristics of reasonable structure and convenient use.

Claims

1. A forming mold for making a cup cover, comprising a cup cover, wherein a straw insertion hole is arranged at the top of the cup cover (1), a dust cover sheet (11) is arranged at the straw insertion hole, the outer edge of the dust cover sheet (11) is connected to the edge of the insertion hole through two external connecting parts (12), and the dust cover sheet (11) is divided into two half-petal dust cover sheets by a punching line (13) in the middle; an intermediate connecting part (14) is provided in the middle of the punching line (13) to divide the punching line (13) into two sections, and the two half-petal dust cover sheets are connected as a whole through the intermediate connecting part (14); Features: The molding die comprises an upper mold plate (2) and a lower mold plate (3), the upper and lower mold plates are matched with each other through guide pillars (4) and guide pillar holes, a plurality of cores (5) are arranged on the upper mold plate (2), a plurality of cavities (6) corresponding to the cores (5) are arranged on the lower mold plate (3), the cavities (6) and the cores (5) are arranged in one or more groups, and the feature is that a buffer mechanism in the up-and-down direction is arranged between the core (5) and the upper mold plate (2), a vertically extending buffer mechanism is provided on the core (5), and a vertically extending buffer mechanism is provided on the core (5). 5), an upper through hole is provided at the upper through hole, the upper end of the upper punch (7) is fixedly connected to the upper template (2), and the upper punch (7) is accommodated in the through hole; a lower through hole is opened at a position corresponding to the upper through hole inside the cavity (6), a lower punch (8) is provided in the lower through hole, and the lower punch (8) is fixedly connected to the cavity (6) or the lower template (3); when the upper and lower templates are closed, the cavity (6) compresses the core (5) upward so that the upper punch (7) is exposed from the upper through hole and cooperates with the end of the lower punch (8); The upper punch (7) comprises an upper sleeve (71) and an upper punch body (72), and the upper punch body (72) is accommodated in the upper sleeve (71); the lower punch (8) comprises a lower sleeve (81) and a lower punch body (82), and the lower punch body (82) is accommodated in the lower sleeve (81); An upper notch (73) is provided at the lower end of the upper punch body (72), and a lower notch (83) is provided at the upper end of the lower punch body (82). The upper and lower notches are offset from each other. The lower end surface of the upper punch body (72) matches the shape of the lower notch (83), and the upper end surface of the lower punch body (82) matches the shape of the upper notch (73). Notches (75) are provided at the outer edges of the lower end surface of the upper punch body (72) and the upper end surface of the lower punch body (82). The buffer mechanism comprises a connecting seat (91), a buffer column (92) and a buffer spring (93). The connecting seat (91) is fixedly connected to the upper mold plate (2). A plurality of guide holes are formed on the connecting seat (91). A limit block (94) is provided at the upper end of the buffer column (92). The outer diameter of the limit block (94) is larger than the diameter of the guide hole. A buffer hole (21) is provided at a position of the upper mold plate (2) corresponding to the guide hole. The limit block (94) is accommodated in the buffer hole (21) and can move up and down. The buffer column (92) passes through the guide hole and the buffer spring (93) in sequence downward and is fixedly connected to the core (5).

2. A forming mold for making a cup cover as claimed in claim 1, characterized in that: The punching line (13) is a punching straight line, and the two external connection parts (12) are distributed on both sides of the punching straight line and are symmetrically arranged.

3. A forming mold for making a cup cover as claimed in claim 1, characterized in that: A connecting groove (74) is also provided on the lower end surface of the upper punch body (72), and the connecting groove (74) is communicated with the upper notch (73).

4. A forming mold for making a cup cover as claimed in claim 3, characterized in that: The width of the connecting groove (74) is smaller than the width of the notch (75).

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