Heat-sealing and heat-cutting mechanism of bag making machine

Abstract

The utility model relates to a heat-sealing and heat-cutting mechanism of a bag making machine, which comprises a driving seat, a heat-sealing cutter, a cutter and a base, a cutter groove is arranged on the end face of the heat-sealing cutter, the cutter is positioned in the cutter groove, two translation grooves which are respectively positioned above two ends of the cutter are arranged on the driving seat, and a connecting rod is arranged in the translation grooves in a penetrating manner. The two ends of the cutter are fixedly connected to the lower ends of the two connecting rods respectively, a transmission rod is fixedly connected to the connecting rods, two supporting blocks symmetrically located on the two sides of the connecting rods are fixedly connected to the driving base, the two ends of the transmission rod are slidably arranged on the two supporting blocks in a penetrating mode respectively, and the transmission rod is sleeved with first springs located between the supporting blocks and the connecting rods. A transmission block located on one side of the inner side end of one transmission rod is fixedly connected to the heat sealing cutter, and a transmission inclined face capable of abutting against the inner side end of the transmission rod is formed on the face, facing the transmission rod, of the transmission block. The heat-sealing and heat-cutting mechanism of the bag making machine can stably and rapidly cut a material belt, and continuity of heat-sealing and heat-cutting operation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making machines, in particular to a heat sealing and cutting mechanism of a bag making machine. Background Art

[0002] The forming process of the vest bag is completed by a bag making machine. Its principle is to cut the material strip into segments after it is drawn out from the material roll, and heat-press seal the two ends of the material segment, and then punch out to form a handle. Among them, the operation of cutting the material strip into material strips and heat-press sealing is completed by the heat sealing and hot cutting mechanism on the bag making machine. In the existing technology, the heat sealing and hot cutting mechanism is mainly composed of a driving seat, a heat sealing knife, a cutter and a base. The heat sealing knife can be spring-loaded and retracted on the driving seat. The cutter is fixedly arranged on the driving seat in the knife groove of the heat sealing knife. When heat sealing and hot cutting the material strip on the base, the driving seat drives the heat sealing knife and the cutter to move longitudinally repeatedly relative to the base. The heat sealing knife first contacts the material strip for heat sealing, and the cutter then contacts the material strip to cut the material strip into segments. However, in the above structure, the movement direction of the cutter when cutting the material strip is a single longitudinal movement. When the material strip has great toughness, there is a situation where the cutter cannot quickly cut the material strip, affecting the continuity of the heat sealing and hot cutting operation.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a heat sealing and cutting mechanism for a bag making machine, which solves the above problems existing in the prior art during use.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] The cam is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate, and the toothed plate is provided with a toothed plate,

[0007] Preferably, the heat sealing knife is fixedly connected to a plurality of telescopic rods passing through the driving seat, the upper ends of the telescopic rods pass through the driving seat and are fixedly connected to a limiting block, the driving seat is fixedly connected to a spring sleeve covering the limiting block, and a second spring is provided in the spring sleeve, which is tightly against the limiting block.

[0008] Preferably, the spring sleeve consists of a fixed sleeve and an adjusting sleeve, the fixed sleeve is fixedly connected to the driving seat, and the adjusting sleeve is threaded onto the fixed sleeve.

[0009] Preferably, a sliding bearing is provided in the support block, and the transmission rod is passed through the sliding bearing.

[0010] Preferably, a longitudinal sliding groove is provided on the side surface of the lower end of the connecting rod, a longitudinal adjustment long groove is provided on the bottom of the sliding groove, an adjustment connecting rod with a matching width with the sliding groove is provided in the sliding groove, an adjustment bolt passing through the adjustment long groove is screwed on the adjustment connecting rod, and the cutter is fixedly connected to the lower end of the adjustment connecting rod.

[0011] Preferably, a mounting groove is provided at the lower end of the adjusting connecting rod, the end of the cutter is placed in the mounting groove, and a mounting bolt provided on the cutter is screwed onto the adjusting connecting rod.

[0012] Preferably, a reinforcing rod is fixedly connected between the upper ends of the two connecting rods passing through the translation slot.

[0013] In summary, the beneficial effect of the present invention is that when the heat sealing knife and the cutter produce relative displacement in the longitudinal direction, the cutter simultaneously produces horizontal displacement through the cooperation of the transmission rod and the transmission inclined surface of the transmission block, so that the cutter cuts into the material strip in an oblique manner, ensuring that the cutter can quickly cut the material strip and ensure the continuity of the heat sealing and hot cutting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle;

[0018] Figure 4 It is a structural schematic diagram of the connecting rod, the adjusting connecting rod and the cutter in the utility model.

[0019] In the figure: 1. Drive seat; 101. Translation groove; 2. Heat sealing knife; 3. Cutter; 4. Base; 5. Connecting rod; 51. Sliding groove; 52. Adjusting long groove; 53. Adjusting bolt; 6. Transmission rod; 7. Support block; 71. Sliding bearing; 8. First spring; 9. Transmission block; 91. Transmission inclined plane; 10. Telescopic rod; 11. Limit block; 12. Spring sleeve; 121. Fixed sleeve; 122. Adjusting sleeve; 13. Second spring; 14. Adjusting connecting rod; 141. Mounting groove; 142. Mounting bolt; 15. Reinforcing rod. DETAILED DESCRIPTION

[0020] The following is a combination of the appended examples of the present invention Figure 1-4 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] As shown in the figure, a heat sealing and cutting mechanism of a bag making machine includes a driving seat 1, a heat sealing knife 2, a cutter 3 and a base 4. The heat sealing knife 2 can be elastically and telescopically arranged on the driving seat 1 and a knife groove is provided on the end surface of the heat sealing knife 2. The cutter 3 is located in the knife groove. The driving seat 1 is provided with two translation grooves 101 respectively located above the two ends of the cutter 3. A connecting rod 5 that can slide horizontally in the translation groove 101 is passed through the translation groove 101. The two ends of the cutter 3 are respectively fixedly connected to the lower ends of the two connecting rods 5. A transmission rod 6 is fixedly connected to the drive seat 1 and is horizontally located below the drive seat 1. Two support blocks 7 are fixedly connected to the drive seat 1 and are symmetrically located on both sides of the connecting rod 5. The two ends of the transmission rod 6 are slidably inserted into the two support blocks 7. A first spring 8 is sleeved on the transmission rod 6 and is located between the support block 7 and the connecting rod 5. A transmission block 9 is fixedly connected to the heat sealing knife 2 and is located on one side of the inner end of one of the transmission rods 6. A transmission inclined surface 91 that can contact the inner end of the transmission rod 6 is formed on the surface of the transmission block 9 facing the transmission rod 6.

[0022] Specifically, the heat sealing knife 2 can be elastically and telescopically mounted on the driving seat 1: the heat sealing knife 2 is fixedly connected to a plurality of telescopic rods 10 that pass through the driving seat 1, and the upper ends of the telescopic rods 10 pass through the driving seat 1 and are fixedly connected to a limit block 11, and the driving seat 1 is fixedly connected to a spring sleeve 12 that covers the limit block 11, and a second spring 13 that is tightly pressed against the limit block 11 is provided in the spring sleeve 12.

[0023] In the above structure, the transmission rod 6 is horizontally inserted into the support block 7 so that the transmission rod 6 can slide horizontally on the support block 7 and be limited in the longitudinal direction, and the connecting rod 5 can move horizontally in the translation groove 101 and be limited in the longitudinal direction, that is, the cutter 3 can move horizontally in the knife groove and be limited in the longitudinal direction. After the first spring 8 on the two transmission rods 6 is tightly pressed between the connecting rod 5 and the support block 7, the transmission rod 6 can remain stable on the support block 7 without being affected by external forces, which also makes the connecting rod 5 and the cutter 3 remain stable in the translation groove 101 and the knife groove respectively. When performing heat sealing and hot cutting operations, the material strip passes between the heat sealing knife 2 and the base 4 and is placed on the base 4. The driving seat 1 connected to the driving structure of the bag making machine drives the heat sealing knife 2 and the cutter 3 to move downward under the drive of the driving structure. The heat sealing knife 2 first contacts the material strip to heat-seal the material strip to form two heat sealing strips. As the driving seat 1 continues to move downward, since the stroke of the heat sealing knife 2 is limited by the base 4, the telescopic rod 10 The driving seat 1 slides upward and compresses the second spring 13, while the cutter 3 continues to move downward under the drive of the driving seat 1, that is, the heat sealing knife 2 and the cutter 3 produce relative movement in the longitudinal direction, so that the transmission rod 6 moves longitudinally relative to the transmission block 9 so that the inner end of the transmission rod 6 contacts the transmission inclined surface 91, and the transmission rod 6 produces horizontal displacement in the support block 7 under the top of the transmission inclined surface 91, thereby driving the connecting rod 5 to produce horizontal displacement in the translation groove 101, and then driving the cutter 3 to produce horizontal displacement in the knife groove, so that the cutter 3 produces horizontal movement while moving longitudinally, so that the cutter 3 contacts the material belt in the oblique cutting direction and cuts the material belt, ensuring that the cutter 3 can quickly cut the material belt and cut the material belt into sections, ensuring the continuity of the heat sealing and hot cutting operation, and after the driving seat 1 is reset, the heat sealing knife 2 is quickly reset under the action of the second spring 13, and the connecting rod 5 is reset under the action of the first spring 8, driving the cutter 3 to quickly reset for the next cutting.

[0024] In addition, the spring sleeve 12 is composed of a fixed sleeve 121 and an adjusting sleeve 122. The fixed sleeve 121 is fixedly connected to the driving seat 1, and the adjusting sleeve 122 is screwed to the fixed sleeve 121. By rotating the adjusting sleeve 122, the preload compression of the second spring 13 can be adjusted, and the preload pressure of the second spring 13 on the heat sealing knife 2 is adjusted through the telescopic rod 10, so that the heat sealing knife 2 can be adjusted to a suitable pressing force according to different material belts, thereby ensuring the quality of heat sealing.

[0025] In addition, a sliding bearing 71 is provided in the support block 7, and the transmission rod 6 is passed through the sliding bearing 71. The sliding bearing 71 ensures the smoothness and stability of the transmission rod 6 when sliding horizontally on the support block 7, thereby ensuring the smoothness and stability of the cutter 3 when moving horizontally in the knife groove, and ensuring that the cutter 3 can quickly cut the material belt.

[0026] In addition, a longitudinal sliding groove 51 is provided on the side surface of the lower end of the connecting rod 5, and a longitudinal adjustment long groove 52 is provided on the bottom of the sliding groove 51. An adjustment connecting rod 14 with a width matching the sliding groove 51 is provided in the sliding groove 51, and an adjustment bolt 53 is passed through the adjustment long groove 52 and is screwed on the adjustment connecting rod 14. The cutter 3 is fixedly connected to the lower end of the adjustment connecting rod 14. By rotating the adjusting bolt 53, the adjustment connecting rod 14 slides longitudinally in the sliding groove 51, and the longitudinal position of the adjustment connecting rod 14 can be adjusted, thereby adjusting the longitudinal position of the cutter 3, so that the cutter 3 can be adjusted to a suitable initial position according to different material belts, ensuring that the cutter 3 can quickly cut the material belt.

[0027] In addition, a mounting groove 141 is provided at the lower end of the adjusting link 14, the end of the cutter 3 is placed in the mounting groove 141 and a mounting bolt 142 is provided on the cutter 3 and is screwed to the adjusting link 14. After unscrewing the mounting bolt 142, the cutter 3 can be removed, which facilitates the disassembly and assembly of the cutter 3, thereby facilitating the maintenance and replacement of the cutter 3.

[0028] In addition, a reinforcing rod 15 is fixedly connected between the upper ends of the two connecting rods 5 passing through the translation groove 101. The reinforcing rod 15 strengthens the synchronization of the two connecting rods 5 when sliding horizontally in the two translation grooves 101, thereby strengthening the stability of the cutter 3 when moving horizontally in the knife groove, ensuring that the cutter 3 can quickly cut the material belt.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A heat sealing and cutting mechanism for a bag making machine, comprising a drive seat (1), a heat sealing knife (2), a cutter (3) and a base (4), wherein the heat sealing knife (2) is elastically and telescopically arranged on the drive seat (1) and a knife groove is formed on the end surface of the heat sealing knife (2), and the cutter (3) is located in the knife groove, characterized in that: The driving seat (1) is provided with two translation grooves (101) respectively located above the two ends of the cutter (3), and a connecting rod (5) that can slide horizontally in the translation groove (101) is inserted into the translation groove (101). The two ends of the cutter (3) are respectively fixedly connected to the lower ends of the two connecting rods (5), and the connecting rod (5) is fixedly connected to a transmission rod (6) horizontally located below the driving seat (1). The driving seat (1) is fixedly connected to two support blocks symmetrically located on both sides of the connecting rod (5), and the two ends of the transmission rod (6) are respectively slidably inserted into the two support blocks (7). The transmission rod (6) is sleeved with a first spring (8) located between the support block (7) and the connecting rod (5). The heat sealing knife (2) is fixedly connected to a transmission block (9) located on one side of the inner end of one of the transmission rods (6), and a transmission inclined surface (91) that can contact the inner end of the transmission rod (6) is formed on the surface of the transmission block (9) facing the transmission rod (6).

2. The heat sealing and cutting mechanism of the bag making machine according to claim 1, characterized in that: The heat sealing knife (2) is fixedly connected to a plurality of telescopic rods (10) which are passed through the driving seat (1); the upper ends of the telescopic rods (10) pass through the driving seat (1) and are fixedly connected to a limit block (11); the driving seat (1) is fixedly connected to a spring sleeve (12) which covers the limit block (11); a second spring (13) which is tightly pressed against the limit block (11) is provided in the spring sleeve (12).

3. The heat sealing and cutting mechanism of the bag making machine according to claim 2, characterized in that: The spring sleeve (12) is composed of a fixed sleeve (121) and an adjusting sleeve (122), wherein the fixed sleeve (121) is fixedly connected to the driving seat (1), and the adjusting sleeve (122) is screwed onto the fixed sleeve (121).

4. The heat sealing and cutting mechanism of the bag making machine according to claim 1, characterized in that: A sliding bearing (71) is provided in the support block, and the transmission rod (6) is passed through the sliding bearing (71).

5. The heat sealing and cutting mechanism of the bag making machine according to claim 1, characterized in that: A longitudinal sliding groove (51) is provided on the side surface of the lower end of the connecting rod (5), a longitudinal adjusting long groove (52) is provided on the bottom of the sliding groove (51), an adjusting connecting rod (14) having a matching width with the sliding groove (51) is provided in the sliding groove (51), an adjusting bolt (53) passing through the adjusting long groove (52) is screwed onto the adjusting connecting rod (14), and the cutter (3) is fixedly connected to the lower end of the adjusting connecting rod (14).

6. The heat sealing and cutting mechanism of the bag making machine according to claim 5, characterized in that: The lower end of the adjusting connecting rod (14) is provided with a mounting groove (141), the end of the cutter (3) is placed in the mounting groove (141), and the mounting bolt (142) provided on the cutter (3) is screwed onto the adjusting connecting rod (14).

7. The heat sealing and cutting mechanism of the bag making machine according to claim 6, characterized in that: A reinforcing rod (15) is fixedly connected between the upper ends of the two connecting rods (5) passing through the translation slot (101).

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