Plastic bag film heat sealing machine
By designing a plastic bag film thermal bonding machine including a sprocket set and a thermal bonding knife, the problem of low thermal bonding efficiency and quality in the prior art is solved, efficient and stable thermal bonding effect is achieved, and product quality is protected through cooling devices.
Patent Information
- Application Number
- CN202420851941.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-23
AI Technical Summary
When producing garbage bags, the prior art is difficult to improve the production efficiency and quality of the thermal bonding of plastic bags.
A plastic bag film thermal bonding machine is designed, including four sprocket sets and multiple thermal bonding knives. It can achieve efficient thermal bonding through triangularly distributed sprocket sets and symmetrically arranged thermal bonding knives, and is equipped with a cooling device to prevent damage to the product after thermal bonding.
It improves the production efficiency of the heat-connecting machine, enhances the heat-connecting effect, avoids damage to the product after heat-connecting, and improves product quality.
Smart Images
Figure CN222431770U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to mechanical equipment for producing garbage bags, in particular to a plastic bag film heat-sealing machine. Background Art
[0002] When producing garbage bags, it is necessary to heat-seal the plastic bag film. In order to improve the production efficiency and quality of the plastic bag film heat-seal, it is necessary to design a plastic bag film heat-seal machine. Utility Model Content
[0003] In order to solve the above problems, the utility model provides a plastic bag film heat sealing machine, and the specific technical solution is:
[0004] A plastic bag film heat sealing machine is used for heat sealing plastic bag films, comprising a frame and a heat sealing device, wherein the heat sealing device is mounted on the frame; the heat sealing device comprises four sprocket groups, namely a first sprocket group, a second sprocket group, a third sprocket group and a fourth sprocket group; the sprocket group comprises three sprockets distributed in a triangle and a transmission chain surrounding the three sprockets; the first sprocket group and the second sprocket group are arranged adjacent to each other on the same plane, the transmission chains at the adjacent arrangement positions are parallel and transmit in the same direction, and the plastic bag film passes between the adjacent arrangement transmission chains when heat sealing; the third sprocket group and the fourth sprocket group are arranged symmetrically in the same way as the first sprocket group and the second sprocket group on another plane; the machine also comprises a plurality of heat sealing knives arranged in parallel with each other, the two ends of the heat sealing knives are fixed on the transmission chains of the first sprocket group and the third sprocket group and on the transmission chains of the second sprocket group and the fourth sprocket group; the plurality of heat sealing knives are spaced the same; the plurality of heat sealing knives are symmetrical on both sides of the positions where the plurality of heat sealing knives pass when heat sealing the plastic bag film.
[0005] As a further improvement, the sprocket group includes three sprockets distributed in a triangular pattern; the number of the heat sealing knives is six, including a first heat sealing knife, a second heat sealing knife, a third heat sealing knife, a fourth heat sealing knife, a fifth heat sealing knife, and a sixth heat sealing knife; both ends of the heat sealing knife are fixed on the transmission chains of the first sprocket group and the third sprocket group; both ends of the fourth heat sealing knife, the fifth heat sealing knife, and the sixth heat sealing knife are evenly distributed and fixed on the second sprocket group and the fourth sprocket group.
[0006] As a further improvement, the heat sealing knife includes a knife holder, a heating strip, and a connecting piece; the heating strip is fixed on the knife holder; the connecting piece is located on both sides of the knife holder and is used to be fixed to the transmission chain.
[0007] As a further improvement, the heat sealing knife also includes a support frame, an elastic component, and a roller; the support frame is located on the side of the knife holder facing away from the heating strip; the roller is fixed on the support frame, and the elastic component is located between the support frame and the knife holder.
[0008] As a further improvement, the frame also includes at least two heat-sealing supports, which are respectively located between the first sprocket group and the third sprocket group and between the second sprocket group and the fourth sprocket group; the heat-sealing supports include a supporting edge for the roller to pass through.
[0009] As a further improvement, the supporting edge is parallel to the transmission chain adjacent to the first sprocket set and the second sprocket set.
[0010] As a further improvement, the number of supporting edges on each heat-sealing support member is at least three, the number of rollers on each heat-sealing knife is consistent with the number of supporting plates, and the positions of the supporting edges and rollers correspond one to one.
[0011] As a further improvement, the heat sealing device further comprises a plurality of push rods; one end of the push rods is fixed on the frame, and the other end is connected to the sprocket.
[0012] As a further improvement, there are four push rods, which are respectively connected to the sprockets far away from adjacent arrangement positions in the first sprocket group, the second sprocket group, the third sprocket group, and the fourth sprocket group.
[0013] As a further improvement, it also includes a cooling device, which is located at the rear of the heat sealing device, and includes a fifth sprocket group, a sixth sprocket group, a seventh sprocket group, an eighth sprocket group, and a plurality of clamping strips; the fifth sprocket group and the sixth sprocket group are arranged adjacent to each other on the same plane, and the transmission chains at the adjacent positions are parallel and transmit in the same direction, and the plastic bag film passes between the adjacent transmission chains when cooling; the seventh and ninth sprocket groups and the eighth sprocket group are arranged symmetrically in the same way as the fifth sprocket group and the sixth sprocket group on another plane; both ends of the clamping strip are fixed on the transmission chains of the fifth sprocket group and the seventh sprocket group and on the transmission chains of the sixth sprocket group and the eighth sprocket group; the plurality of clamping strips are symmetrical on both sides of the position where the plastic bag film passes when cooling. As a further improvement, each of the fifth sprocket group, the sixth sprocket group, the seventh sprocket group and the eighth sprocket group includes two sprockets; the clamping strips are silicone strips, and there are at least eight of them, which are evenly distributed on the fifth sprocket group, the sixth sprocket group, the seventh sprocket group and the eighth sprocket group.
[0014] Compared with the prior art, the utility model has the following beneficial effects: 1. It can improve the production efficiency of the heat sealing machine; 2. By reasonably setting the heat sealing support, the heat sealing effect is improved; 3. By setting a cooling device, damage to the product after heat sealing is avoided and the product quality is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is the overall plan view of the plastic bag film heat sealing machine;
[0016] Figure 2 It is the overall structural diagram of the heat sealing device;
[0017] Figure 3 It is the working state diagram of the heat sealing device;
[0018] Figure 4 It is the structural diagram of the heat sealing knife;
[0019] Figure 5 It is a structural diagram of the cooling device;
[0020] Figure 6 It is the overall stereogram of the plastic bag film heat sealing machine;
[0021] Figure 7 This is a structural diagram of a plastic bag film heat sealing machine showing part of the frame;
[0022] The symbols in the accompanying drawings are described as follows:
[0023] 1. Frame; 11. Heat-sealing support; 111. Support edge; 2. Heat-sealing device; 21. First sprocket group; 22. Second sprocket group; 23. Third sprocket group; 24. Fourth sprocket group; X1. Sprocket; X2. Drive chain; 251. First heat-sealing knife; 252. Second heat-sealing knife; 253. Third heat-sealing knife; 254. Fourth heat-sealing knife; 255. Fifth heat-sealing knife; 256. Sixth heat-sealing knife; Y1. Knife holder; Y2. Heating strip; 26. Push rod; Y3. Connecting piece; Y4 support frame; Y5, elastic component; Y6, roller; 3. Cooling device; 31. Fifth sprocket group; 32. Sixth sprocket group; 33. Seventh sprocket group 34. Eighth sprocket group; Z1. Sprocket of cooling device; Z2. Drive chain of cooling device; 35. Silicone strip; 4. Plastic bag film. DETAILED DESCRIPTION
[0024] The utility model is now further described with reference to the accompanying drawings.
[0025] A plastic bag film heat sealing machine, used for heat sealing a plastic bag film 4, comprises a frame 1, a heat sealing device 2, wherein the heat sealing device 2 is mounted on the frame 1; the heat sealing device 2 comprises four sprocket groups, namely a first sprocket group 21, a second sprocket group 22, a third sprocket group 23, and a fourth sprocket group 24; the sprocket group comprises three sprockets X1 distributed in a triangle and a transmission chain X2 surrounding the three sprockets X1; the first sprocket group 21 and the second sprocket group 22 are arranged closely on the same plane, and the closely arranged The transmission chain X2 in the middle area of the cloth is parallel and both transmit downward; the third sprocket group 23 and the fourth sprocket group 24 are on another plane, and are symmetrically arranged in the same way as the first sprocket group 21 and the second sprocket group 22; it also includes a plurality of heat sealing knives arranged parallel to each other, and both ends of the heat sealing knives are fixed on the transmission chain X2 of the first sprocket group 21 and the third sprocket group 23 and on the transmission chain X2 of the second sprocket group 22 and the fourth sprocket group 24; the spacing between the plurality of heat sealing knives is the same.
[0026] like Figure 1 , Figure 2 As shown, the plastic bag film 4 passes through the first sprocket group 21, the second sprocket group 22, and the adjacently arranged interval, and is now in the heat-sealing working position of the plastic bag film 4. As the transmission chain X2 moves, the heat-sealing knives on both sides of the plastic bag film 4 synchronously reach the upper part of the first sprocket group 21 and the second sprocket group 22, and the symmetrical heat-sealing knives on both sides of the plastic bag film 4 simultaneously reach the same position on both sides of the plastic bag film 4 and start heat-sealing. When the plastic bag film 4 reaches the lower part of the first sprocket group 21 and the second sprocket group 22, it will leave the heat-sealing working position, and the heat-sealing knives on both sides will separate. The spacing between the heat-sealing knives determines the size of the spacing between the heat-sealing positions of the plastic bag film 4. Under this structure, similar to the utility model Figure 5 The structure can realize continuous heat sealing by using at least two sprockets per sprocket set. This structure significantly improves the working efficiency of heat sealing.
[0027] In order to further improve work efficiency and stability, such as Figure 1 , Figure 2As shown, the sprocket group includes three sprockets (X1) distributed in a triangle; the number of the heat sealing knives is six, including the first heat sealing knife 251, the second heat sealing knife 252, the third heat sealing knife 253, the fourth heat sealing knife 254, the fifth heat sealing knife 255, and the sixth heat sealing knife 256; the two ends of the heat sealing knife are fixed on the transmission chain X2 of the first sprocket group 21 and the third sprocket group 23; the two ends of the fourth heat sealing knife 254, the fifth heat sealing knife 255, and the sixth heat sealing knife 256 are evenly distributed and fixed on the second sprocket group 22 and the fourth sprocket group 24. Compared with the above scheme, it is not just an increase in the number of sprockets, but a stable triangular structure is established. So that the heat sealing knives that complete the heat sealing in sequence have a stable and controllable spacing and a time interval between each heat sealing. And due to the triangular structure between the sprockets (X1), the triangular area can generate a usable space to further improve the structure and improve the production quality.
[0028] The heat sealing knife includes a knife holder Y1, a heating strip Y2, and a connecting piece Y3; the heating strip Y2 is fixed on the knife holder Y1; the connecting piece Y3 is located on both sides of the knife holder Y1 and is used to be fixed to the transmission chain X2. The heat sealing knife also includes a support frame Y4, an elastic component Y5, and a roller Y6; the support frame Y4 is located on the side of the knife holder Y1 facing away from the heating strip Y2; the roller Y6 is fixed on the support frame Y4, and the elastic component Y5 is located between the support frame Y4 and the knife holder Y1. During heat sealing, the heating strip Y2 of the heat sealing knife needs to be pressed tightly against the plastic bag film 4, and once the transmission chain X2 becomes loose, the heat sealing effect will inevitably be affected.
[0029] like Figure 3 As shown, the frame 1 also includes at least two heat-sealing support members 11, which are respectively located between the first sprocket group 21 and the third sprocket group 23 and between the second sprocket group 22 and the fourth sprocket group 24; the heat-sealing support member 11 includes a support edge 111 for the roller Y6 to pass through. The support edge 111 is parallel to the transmission chain X2 adjacent to the first sprocket group 21 and the second sprocket group 22. When the roller Y6 of the heat-sealing knife passes through the support edge 111, due to the action of the elastic component Y5, a force facing the plastic bag film 4 is generated, thereby improving the heat-sealing effect.
[0030] like Figure 3 As shown, the number of support edges 111 on each heat-sealing support member 11 is at least three, the number of rollers Y6 on each heat-sealing knife is consistent with the number of support plates, and the positions of the support edges 111 and rollers Y6 correspond one to one. Since the heat-sealing knife is relatively long, and the width of the plastic bag film 4 is necessarily smaller than the length of the heat-sealing knife, the more support edges 111 and rollers Y6, the better. Figure 3In the embodiment, the number of rollers Y6 on each heat-sealing knife is four. Since both sides of the plastic bag film 4 need to be heat-sealed at the same time, the number of supporting edges 111 at both ends is also four.
[0031] like Figure 2 As shown, the heat sealing device 2 also includes four push rods 26; one end of the push rod 26 is fixed on the frame 1, and the other end is connected to the sprocket (X1). The push rods 26 are respectively connected to the sprockets (X1) away from the adjacent arrangement positions in the first sprocket group 21, the second sprocket group 22, the third sprocket group 23, and the fourth sprocket group 24. Since the plastic bag film 4 will pass through the middle, the position of the sprocket (X1) at this position needs to be kept stable. Therefore, the push rod 26 is used to push the sprocket (X1) away from the adjacent arrangement position to keep the conveyor chain tight.
[0032] like Figure 1 , Figure 6 , Figure 7 As shown, it also includes a cooling device 3, which is located at the rear of the heat sealing device 2. The cooling device 3 includes a fifth sprocket group 31, a sixth sprocket group 32, a seventh sprocket group 33, an eighth sprocket group 34, and a plurality of silicone strips 35. The number of silicone strips 35 is 18, which are evenly distributed on the fifth sprocket group 31, the sixth sprocket group 32, the seventh sprocket group 33, and the eighth sprocket group 34. The fifth sprocket group 31 and the sixth sprocket group 32 are arranged adjacent to each other on the same plane, and the transmission chain Z2 in the adjacent arrangement position, that is, the middle area, is parallel and transmits downward; the seventh sprocket group 33 and the eighth sprocket group 34 are arranged symmetrically in the same way as the fifth sprocket group 31 and the sixth sprocket group 32 on another plane; the two ends of the silicone strip 35 are fixed on the transmission chain Z2 of the fifth sprocket group 31 and the seventh sprocket group 33 and the transmission chain Z2 of the sixth sprocket group 32 and the eighth sprocket group 34, and are arranged symmetrically on both sides of the position where the plastic bag film 4 passes when cooling. Each of the fifth sprocket set 31 , the sixth sprocket set 32 , the seventh sprocket set 33 and the eighth sprocket set 34 includes two sprockets Z1 .
[0033] After the heat sealing is completed, due to the high temperature of the plastic bag film 4, its physical structure is not stable, which is easy to cause damage during the transmission process and subsequent processes. Therefore, it is necessary to cool the plastic bag film 4 during stable transmission. When the plastic bag film 4 passes through the cooling device 3, the silicone strips 35 on both sides of the plastic bag film 4 clamp it so that it will not be unevenly stressed during transmission, avoiding process problems such as tearing of the plastic bag film 4. Therefore, the more silicone strips 35, the better.
[0034] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the claims of the present invention.
Claims
1. A plastic bag film heat sealing machine, used for heat sealing plastic bag films, characterized by: It comprises a frame (1) and a heat sealing device (2), wherein the heat sealing device (2) is mounted on the frame; The heat sealing device (2) comprises four sprocket groups, namely a first sprocket group (21), a second sprocket group (22), a third sprocket group (23), and a fourth sprocket group (24); the sprocket group comprises three sprockets (X1) distributed in a triangular shape and a transmission chain (X2) surrounding the three sprockets (X1); The first sprocket set (21) and the second sprocket set (22) are arranged adjacent to each other on the same plane, and the transmission chains (X2) at the adjacent positions are parallel and synchronously drive in the same direction, and the plastic bag film passes between the adjacent transmission chains (X2) when heat-sealing; the third sprocket set (23) and the fourth sprocket set (24) are arranged symmetrically in the same manner as the first sprocket set (21) and the second sprocket set (22) on another plane; It also comprises a plurality of heat-sealing knives arranged in parallel with each other, the two ends of the heat-sealing knives being fixed on the transmission chain (X2) of the first sprocket group (21) and the third sprocket group (23) and the transmission chain (X2) of the second sprocket group (22) and the fourth sprocket group (24); the adjacent spacings between the plurality of heat-sealing knives are the same; and the positions where the plurality of heat-sealing knives pass when heat-sealing the plastic bag film are symmetrical on both sides.
2. The plastic bag film heat sealing machine according to claim 1, characterized in that: The sprocket group comprises three sprockets (X1) distributed in a triangle; the number of the heat sealing knives is six, including a first heat sealing knife (251), a second heat sealing knife (252), a third heat sealing knife (253), a fourth heat sealing knife (254), a fifth heat sealing knife (255), and a sixth heat sealing knife (256); both ends of the heat sealing knife are fixed on the transmission chain (X2) of the first sprocket group (21) and the third sprocket group (23); and both ends of the fourth heat sealing knife (254), the fifth heat sealing knife (255), and the sixth heat sealing knife (256) are evenly distributed and fixed on the second sprocket group (22) and the fourth sprocket group (24).
3. The plastic bag film heat sealing machine according to claim 1 or claim 2, characterized in that: The heat sealing knife comprises a knife frame (Y1), a heating strip (Y2), and a connecting piece (Y3); the heating strip (Y2) is fixed on the knife frame (Y1); the connecting piece (Y3) is located on both sides of the knife frame (Y1) and is used to be fixed to the transmission chain (X2).
4. The plastic bag film heat sealing machine according to claim 3, characterized in that: The heat-sealing knife further comprises a support frame (Y4), an elastic component (Y5), and a roller (Y6); the support frame (Y4) is located on a side of the knife frame (Y1) facing away from the heating strip (Y2); the roller (Y6) is fixed on the support frame (Y4), and the elastic component (Y5) is located between the support frame (Y4) and the knife frame (Y1).
5. The plastic bag film heat sealing machine according to claim 4, characterized in that: The frame also includes at least two heat-sealing support members (11), and the heat-sealing support members (11) are respectively located between the first sprocket group (21) and the third sprocket group (23) and between the second sprocket group (22) and the fourth sprocket group (24); the heat-sealing support member (11) includes a support edge (111) for the roller (Y6) to pass through.
6. The plastic bag film heat sealing machine according to claim 5, characterized in that: The supporting edge (111) is parallel to the transmission chain (X2) adjacent to the first sprocket set (21) and the second sprocket set (22).
7. The plastic bag film heat sealing machine according to claim 6, characterized in that: The number of supporting edges (111) on each heat-sealing support member (11) is at least three, the number of rollers (Y6) on each heat-sealing knife is consistent with the number of supporting plates, and the positions of the supporting edges (111) and the rollers (Y6) correspond one to one.
8. The plastic bag film heat sealing machine according to claim 2, characterized in that: The heat sealing device (2) further comprises a plurality of push rods (26); one end of the push rod (26) is fixed on the frame, and the other end is connected to the sprocket (X1).
9. The plastic bag film heat sealing machine according to claim 8, characterized in that: There are four push rods (26), which are respectively connected to sprockets that are far away from adjacent arrangement positions in the first sprocket group (21), the second sprocket group (22), the third sprocket group (23), and the fourth sprocket group (24).
10. The plastic bag film heat sealing machine according to claim 1, characterized in that: It also includes a cooling device (3), the cooling device (3) being located at the rear of the heat sealing device (2), the cooling device (3) comprising a fifth sprocket set (31), a sixth sprocket set (32), a seventh sprocket set (33), an eighth sprocket set (34), and a plurality of clamping strips; The fifth sprocket group (31) and the sixth sprocket group (32) are arranged adjacent to each other on the same plane, the transmission chains at the adjacent arrangement positions are parallel and transmit in the same direction, and the plastic bag film passes between the adjacent arrangement transmission chains when cooling; the seventh sprocket group and the eighth sprocket group (34) are arranged symmetrically in the same manner as the fifth sprocket group (31) and the sixth sprocket group (32) on another plane; the two ends of the clamping strip are fixed on the transmission chains (Z2) of the fifth sprocket group and the seventh sprocket group and on the transmission chains (Z2) of the sixth sprocket group and the eighth sprocket group; the multiple clamping strips are symmetrical on both sides of the position where the plastic bag film passes when cooling.
11. The plastic bag film heat sealing machine according to claim 10, characterized in that: Each of the fifth sprocket group (31), the sixth sprocket group (32), the seventh sprocket group (33), and the eighth sprocket group (34) comprises two sprockets (Z1); the clamping strips are silicone strips (35), the number of which is at least eight and which are evenly distributed on the fifth sprocket group (31), the sixth sprocket group (32), the seventh sprocket group (33), and the eighth sprocket group (34).