Thermal bonding bottom supporting mechanism of paper cover machine

Abstract

The utility model discloses a hot bonding bottom supporting mechanism of a paper cover machine, which comprises a supporting seat and a cold air assembly, the upper end of the supporting seat is a placing surface matched with paper cover paper sheets, a plurality of cold pressing arc blocks are mounted on the placing surface in a sliding manner, the cold pressing arc blocks are axially arrayed along the center of the placing surface, and the cold pressing arc blocks are connected with arc block drives. The cold air assembly is provided with a plurality of cold air pipes, the cold air pipes directly face the cold pressing arc blocks, a heat sealing column block is arranged above the supporting base in a sliding mode and connected with a heat sealing driving part, hot air holes are formed in the position, close to the outer side face, of the heat sealing column block in a circumferential array mode, and the hot air assembly is connected with the hot air holes through hot air pipes. By means of circumferential hot air heating, the melting rate of the PE film is increased, the hot air heating time is further shortened, meanwhile, cooling is conducted through the cold pressing arc blocks in the pressing process, the high-temperature existing time is further shortened, and the influence on paper rings and paper scraps is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of paper cover production and relates to a thermal bonding bottom supporting mechanism of a paper cover machine. Background Art

[0002] Paper lids and paper cups are usually made of a paper ring and a paper sheet. For food safety and production convenience, when paper rings and paper sheets are glued together, PE film is usually covered on the bonding surface, and then the PE film is melted by heating before bonding. However, the melting temperature of PE film is slightly different from the ignition point temperature of paper rings and paper sheets of some materials. During the melting process, the higher temperature may affect the paper rings and paper sheets.

[0003] A thermal bonding bottom support mechanism for a paper cover machine is disclosed in the patent document with publication number CN218906483U. In this technical solution, a top rod is used to push the support block on the movable bottom support structure to extend outward in the radial direction until the paper cover sheet and paper cover ring heated by hot air are compressed. That is, after the hot air temperature is lowered, the compression of the bottom support mechanism is used to compensate for the thermal bonding of the PE film.

[0004] However, after lowering the hot air temperature, the melting state of the PE film is difficult to control, and some parts may not be sealed tightly after pressure bonding. Utility Model Content

[0005] In view of the above problems, the utility model proposes a thermal bonding bottom supporting mechanism for a paper cover machine, which well solves the problems in the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A thermal bonding bottom supporting mechanism for a paper cover machine, comprising:

[0008] A support seat, the upper end of which is a placement surface adapted for the paper cover paper sheet;

[0009] Cold pressed arc blocks, a plurality of the cold pressed arc blocks are slidably mounted on the placement surface, a plurality of the cold pressed arc blocks are arranged along the central axis of the placement surface, and the cold pressed arc blocks are slid close to form a ring;

[0010] Arc block driving, the arc block driving output end is connected to the cold pressed arc block to drive the cold pressed arc block to slide;

[0011] A cold air component, wherein the cold air component is provided with a plurality of cold air ducts, and when the cold pressed arc block is away from the center of the placement surface, the cold air ducts are directly opposite to the cold pressed arc block;

[0012] A heat-sealing column block, which is slidably disposed above the support seat, is a columnar block adapted to the paper cover and paper ring, and is connected to a heat-sealing driving member to drive the heat-sealing column block to slide;

[0013] Hot air holes, a plurality of hot air holes in a circular array are arranged near the outer side of the heat-sealed column block, and the hot air holes penetrate the bottom of the heat-sealed column block;

[0014] A hot air component comprises a plurality of hot air pipes, and the hot air pipes are respectively connected to the hot air holes.

[0015] Optionally, the arc block driving includes:

[0016] A driving disk, the driving disk is rotatably mounted on the bottom of the supporting seat;

[0017] A sliding groove, the sliding groove is opened on the placement surface, a sliding block is fixedly installed at the bottom of the cold-pressed arc block, and the sliding block is slidably installed in the sliding groove;

[0018] A driving connecting rod, wherein the first end of the driving connecting rod is rotatably connected to the sliding block, and the second end of the driving connecting rod is rotatably connected to the driving disk near the outer side, and the driving connecting rod corresponds to the cold-pressed arc block one by one;

[0019] A driving motor, wherein an output end of the driving motor is fixedly connected to the driving disk.

[0020] Optionally, each cold-pressed arc block is correspondingly provided with at least two of the sliding grooves.

[0021] Optionally, the heat-sealed column block comprises:

[0022] A central tube, wherein a plurality of mounting grooves are provided in a circumferential array on the side wall of the central tube;

[0023] A supporting arc block, each of the mounting grooves can be slidably mounted with a supporting arc block;

[0024] Support drive, the support drive output end is connected to the support arc block.

[0025] Optionally, the support drive includes:

[0026] A wedge block, the wedge block is slidably mounted in the mounting groove, and the wedge block is fixedly connected to the supporting arc block;

[0027] A return spring, the return spring being installed between the support arc block and the center tube;

[0028] A driving push rod, which is slidably mounted in the central tube, and one end of which is wedge-shaped and contacts the inclined surface of the wedge block;

[0029] A driving push rod, wherein an output end of the driving push rod is fixedly connected to the driving push rod.

[0030] Optionally, a limit plate is fixedly installed on the outer side of the heat-sealed column block.

[0031] Optionally, a positioning hole is provided at the upper end of the support seat, and a positioning pin is fixedly connected to the outer side of the heat-sealed column block, and when the heat-sealed column block slides, the positioning pin is inserted into the positioning hole.

[0032] Compared with the prior art, the utility model has the following beneficial effects: by supplying heat through circumferential hot air, the melting rate of the PE film is increased, thereby reducing the hot air heating time and the impact on the paper rings and paper sheets; at the same time, the cold-pressed arc block is cooled during compression, further reducing the time of high temperature and reducing the impact on the paper rings and paper sheets. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0034] Figure 2 It is a structural schematic diagram of the support seat part of an embodiment of the utility model;

[0035] Figure 3 This is a structural schematic diagram of the support base of the embodiment of the utility model from another perspective;

[0036] Figure 4 It is a structural schematic diagram of a heat-sealed column block according to an embodiment of the utility model.

[0037] Reference numerals: 1. support seat;

[0038] 2. Cold pressed arc block; 201. Sliding block; 21. Arc block drive; 211. Driving plate; 212. Sliding slot; 213. Driving connecting rod; 214. Driving motor; 22. Cold air duct;

[0039] 3. Heat-sealed column block; 301. Heat-sealed driving member; 31. Center tube; 32. Support arc block; 33. Support driving; 331. Wedge block; 332. Return spring; 333. Driving push rod; 334. Driving push rod; 34. Limiting plate;

[0040] 4. Hot air hole; 41. Hot air pipe. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] See also Figure 1-Figure 4 , which is a thermal bonding bottom support mechanism for a paper cover machine disclosed in an embodiment of the utility model, comprises a support seat 1, see Figure 2 and Figure 3 The upper end of the support seat 1 is a placement surface adapted for paper cover paper sheets, and a plurality of cold-pressed arc blocks 2 are slidably installed on the placement surface. The plurality of cold-pressed arc blocks 2 are arranged along the central axial direction of the placement surface. The cold-pressed arc blocks 2 slide close to form a ring, and the cold-pressed arc blocks 2 are connected to an arc block drive 21, and the arc block drive 21 drives the cold-pressed arc blocks 2 to slide. It also includes a cold air component, and the cold air component is provided with a plurality of cold air pipes 22. When the cold-pressed arc block 2 is away from the center of the placement surface, the cold air pipe 22 is directly opposite to the cold-pressed arc block 2. A heat-sealed column block 3 is slidably arranged above the support seat 1. Please refer to Figure 4 The heat sealing column block 3 is a columnar block adapted for the paper cover and paper ring. The heat sealing column block 3 is connected to a heat sealing driving member 301 for driving the heat sealing column block 3 to slide. The heat sealing column block 3 is provided with hot air holes 4 in a circular array near the outer side surface. The hot air holes 4 run through the bottom of the heat sealing column block 3 and also include a hot air component. The hot air component includes a plurality of hot air pipes 41, which are respectively connected to the hot air holes 4.

[0043] Specifically, a support seat 1 for placing paper cover paper pieces and a heat-sealing column block 3 for placing paper cover paper rings are provided. When the heat-sealing driving component 301 drives the heat-sealing column block 3 to slide close to the support seat 1, the paper cover paper ring and the paper piece are embedded, and the hot air component blows hot air to the inside of the paper ring through the hot air pipe 41 and the hot air hole 4 to melt the PE film on the paper ring and the paper piece. After the paper ring and the paper piece are embedded, the arc block driving 21 drives the cold-pressed arc block 2 to slide and press the paper ring circumferentially to make the paper ring and the paper piece bonded. The cold air pipe 22 is facing the cold-pressed arc block 2. The temperature of the cold-pressed arc block 2 is relatively low. After approaching the paper ring, the high-temperature part is rapidly cooled.

[0044] In this way, the PE film melting rate is increased by circumferential hot air heating, thereby reducing the hot air heating time and the impact on the paper rings and paper sheets. At the same time, the cold pressed arc block 2 is cooled during compression to further reduce the time of high temperature and the impact on the paper rings and paper sheets.

[0045] In some feasible ways, the support seat 1 is in the shape of a circular plate, and the support seat 1 is fixedly installed on the paper cover machine. In order to cooperate with the concave surface of the paper cover away from the paper ring, a circular boss is arranged above the support seat 1. The cold-pressed arc block 2 is an arc block formed by equally dividing the circular ring. Multiple cold-pressed arc blocks 2 slide toward the center to form a circular ring to squeeze the outer side of the paper cover paper ring. In order to increase the squeezing force, when the inner diameter of the cold-pressed arc block 2 is the same as the outer diameter of the paper cover paper ring, the central angle of the cold-pressed arc block 2 is slightly smaller than the equally divided angle, so that the cold-pressed arc blocks 2 are close to each other so that the approximate circle size formed is smaller than the outer diameter of the paper cover paper ring. The arc block drive 21 can be selected as an electric push rod, a cylinder, etc., and the cold air component can be selected as a fan. The cold-pressed arc block 2 is cooled by the cold air duct 22. When the cooling requirement is high, air conditioning cold air or other cooling devices can also be used to supply cold air;

[0046] The heat sealing column block 3 is columnar or truncated cone shaped according to the setting of the paper ring. When in use, the paper ring is sleeved on the outside of the heat sealing column block 3. The heat sealing driving component 301 can be selected as an electric push rod, a cylinder, etc. The heat sealing driving component 301 is installed on the paper cover machine, and the heat sealing column block 3 is installed at the output end of the heat sealing driving component 301. The hot air hole 4 axially penetrates the heat sealing column block 3. The hot air component can be selected as a combination of a fan and an electric heating wire to supply hot air, and the temperature is controlled at the melting temperature of the PE film. The hot air passes through the hot air pipe 41 and the hot air hole 4 from the bottom of the heat sealing column block 3 to heat the PE film at the bottom of the paper ring or the outside of the paper sheet. In order to reduce the impact on other parts of the paper ring, the heat sealing column block 3 can be selected from materials with poor thermal conductivity such as rubber, so that the heat can act on the position that needs to be heated only through the discharged hot air as much as possible.

[0047] The cold air pipe 22 and the hot air pipe 41 are both provided with electromagnetic valves to control the hot air and the cold air on and off in a timely manner.

[0048] As a specific implementation of the thermal bonding bottom support mechanism of a paper cover machine provided in the application, please refer to Figure 3 The arc block drive 21 includes a driving disk 211, which is rotatably installed at the bottom of the support seat 1. A sliding groove 212 is provided on the placement surface. A sliding block 201 is fixedly installed at the bottom of the cold-pressed arc block 2. The sliding block 201 is slidably installed in the sliding groove 212. The sliding block 201 is rotatably connected to a driving connecting rod 213. The other end of the driving connecting rod 213 is rotatably connected to the driving disk 211 near the outer side. The driving connecting rod 213 corresponds one-to-one to the cold-pressed arc block 2. The driving disk 211 is connected to a driving motor 214.

[0049] In general, the driving disk 211 and the driving connecting rod 213 form a connecting rod structure that pulls the cold-pressed arc block 2 to slide. When the driving motor 214 drives the driving disk 211 to rotate, multiple cold-pressed arc blocks 2 move synchronously, thereby improving the synchronization of the movement of the cold-pressed arc blocks 2, facilitating the formation of more uniform and synchronous pressure, and being uniformly connected to the same driving disk 211 to simplify the driving mechanism.

[0050] In some feasible embodiments, the driving disk 211 is disc-shaped and rotatably mounted on the bottom of the support base 1. The driving motor 214 is fixedly connected to the support base 1 or other parts of the paper cover machine. In order to stabilize the movement path of the cold-pressed arc block 2, each cold-pressed arc block 2 is correspondingly provided with at least two sliding grooves 212. The two sliding blocks 201 pass through the sliding grooves 212 and are fixedly connected by a connecting plate. The driving connecting rod 213 is rotatably connected to the connecting plate.

[0051] As another specific embodiment of the thermal bonding bottom support mechanism of a paper cover machine provided in the application, please refer to Figure 4 The heat-sealed column block 3 includes a central tube 31, and a plurality of mounting grooves are arranged in a circumferential array on the side wall of the central tube 31. A supporting arc block 32 is slidably installed in each mounting groove. The supporting arc block 32 slides radially along the central tube 31. The supporting arc block 32 is connected to a supporting drive 33, and the supporting drive 33 drives the supporting arc block 32 to slide.

[0052] In combination with specific usage scenarios, when in use, the paper cup paper ring is set on the outside of the heat-sealed column block 3. By setting the support arc block 32 and the support drive 33, when the paper cup paper ring is set on the outside of the support arc block 32, the support arc block 32 slides outward to support the paper cup paper ring, thereby increasing the friction between the two and making the paper cup paper ring set more stably.

[0053] Furthermore, the support drive 33 includes a wedge block 331, which can be slidably installed in the installation groove. The wedge block 331 is fixedly connected to the support arc block 32. A return spring 332 is installed between the support arc block 32 and the center tube 31. A driving push rod 333 is slidably installed in the center tube 31. One end of the driving push rod 333 is wedge-shaped and contacts with the inclined surface of the wedge block 331. The driving push rod 333 is connected to a driving push rod 334.

[0054] It should be understood that by providing the driving push rod 333 and the wedge block 331 , when the driving push rod 333 slides, the wedge block 331 is pushed to slide, so that the multiple supporting arc blocks 32 slide synchronously.

[0055] In some feasible embodiments, the center tube 31 is in the shape of a circular tube, the mounting groove is a rectangular groove, the wedge block 331 is a right-angled trapezoidal block, the end of the driving push rod 333 has a plurality of inclined surfaces in a circular array, and the supporting arc block 32 and the center tube 31 are provided with circular holes, in which a reset spring 332 is installed. After the driving push rod 333 is out of contact with the wedge block 331, the reset spring 332 drives the supporting arc block 32 to reset, and the driving push rod 334 can be selected as an electric push rod.

[0056] As a specific implementation of a thermal bonding bottom support mechanism for a paper cover machine provided in the application, a limiting plate 34 is fixedly installed on the outer side of the heat-sealed column block 3 .

[0057] It should be understood that by providing the limiting plate 34, the paper ring is limited when the paper ring is sleeved, thereby improving the accuracy of the engagement with the paper sheet.

[0058] As a specific implementation of a heat-bonding bottom support mechanism for a paper cover machine provided in the application, a positioning hole is provided at the upper end of the support seat 1, and a positioning pin is fixedly connected to the outer side of the heat-bonding column block 3. When the heat-bonding column block 3 slides, the positioning pin is inserted into the positioning hole.

[0059] It should be understood that by providing the positioning holes and the positioning pins, when the heat-sealing column block 3 slides, the positioning pins and the positioning holes form restrictions, so that the heat-sealing column block 3 slides axially along the positioning pins, thereby improving the accuracy of the engagement between the paper ring and the paper sheet.

[0060] In some feasible embodiments, at least two positioning pins and positioning holes are provided. To facilitate insertion, the outer side of the positioning hole and the end face of the positioning pin are tapered. The positioning hole should be provided on the outer side of the cold-pressed arc block 2 to avoid affecting the slippage of the cold-pressed arc block 2. The upper end of the positioning pin is fixedly connected to the upper end of the heat-sealed column block 3 or the output end of the heat-sealed drive 301.

[0061] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A thermal bonding bottom support mechanism for a paper cover machine, characterized in that: include: A support seat, the upper end of which is a placement surface adapted for the paper cover paper sheet; Cold pressed arc blocks, a plurality of the cold pressed arc blocks are slidably mounted on the placement surface, a plurality of the cold pressed arc blocks are arranged along the central axis of the placement surface, and the cold pressed arc blocks are slid close to form a ring; Arc block driving, the arc block driving output end is connected to the cold pressed arc block to drive the cold pressed arc block to slide; A cold air component, wherein the cold air component is provided with a plurality of cold air ducts, and when the cold pressed arc block is away from the center of the placement surface, the cold air ducts are directly opposite to the cold pressed arc block; A heat-sealing column block, which is slidably disposed above the support seat, is a columnar block adapted to the paper cover and paper ring, and is connected to a heat-sealing driving member to drive the heat-sealing column block to slide; Hot air holes, a plurality of hot air holes in a circular array are arranged near the outer side of the heat-sealed column block, and the hot air holes penetrate the bottom of the heat-sealed column block; A hot air component comprises a plurality of hot air pipes, and the hot air pipes are respectively connected to the hot air holes.

2. A thermal bonding bottom support mechanism for a paper cover machine according to claim 1, characterized in that: The arc block drive includes: A driving disk, the driving disk is rotatably mounted on the bottom of the supporting seat; A sliding groove, the sliding groove is opened on the placement surface, a sliding block is fixedly installed at the bottom of the cold-pressed arc block, and the sliding block is slidably installed in the sliding groove; A driving connecting rod, wherein the first end of the driving connecting rod is rotatably connected to the sliding block, and the second end of the driving connecting rod is rotatably connected to the driving disk near the outer side, and the driving connecting rod corresponds to the cold-pressed arc block one by one; A driving motor, wherein an output end of the driving motor is fixedly connected to the driving disk.

3. A thermal bonding bottom support mechanism for a paper cover machine according to claim 2, characterized in that: Each cold-pressed arc block is correspondingly provided with at least two sliding grooves.

4. The thermal bonding bottom support mechanism of a paper cover machine according to claim 1, characterized in that: The heat-sealed column block comprises: A central tube, wherein a plurality of mounting grooves are provided in a circumferential array on the side wall of the central tube; A supporting arc block, each of the mounting grooves can be slidably mounted with a supporting arc block; Support drive, the support drive output end is connected to the support arc block.

5. The thermal bonding bottom support mechanism of a paper cover machine according to claim 4, characterized in that: The support drive comprises: A wedge block, the wedge block is slidably mounted in the mounting groove, and the wedge block is fixedly connected to the supporting arc block; A return spring, the return spring being installed between the support arc block and the center tube; A driving push rod, which is slidably mounted in the central tube, and one end of which is wedge-shaped and contacts the inclined surface of the wedge block; A driving push rod, wherein an output end of the driving push rod is fixedly connected to the driving push rod.

6. The thermal bonding bottom support mechanism of a paper cover machine according to claim 1, characterized in that: A limiting plate is fixedly installed on the outer side of the heat-sealed column block.

7. The thermal bonding bottom support mechanism of a paper cover machine according to claim 1, characterized in that: A positioning hole is arranged at the upper end of the support seat, and a positioning pin is fixedly connected to the outer side of the heat-sealed column block. When the heat-sealed column block slides, the positioning pin is inserted into the positioning hole.

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