CN212501370U

CN212501370U - Heat sealing mechanism

Info

Publication number: CN212501370U
Application number: CN202020904229.9U
Authority: CN
Inventors: 周石冻
Original assignee: Anxi Shantu Machinery Equipment Co ltd
Current assignee: Anxi Shantu Machinery Equipment Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-02-09
Anticipated expiration: 2030-05-26

Abstract

The utility model discloses a heat sealing mechanism, which is used for heat sealing a bag body and comprises two pressing plates which are oppositely arranged; the two heat sealing blocks are oppositely arranged and respectively fixed on the two pressing plates, and a gap for the bag body to pass through is formed between the two heat sealing blocks; the driving piece comprises two clamping arms and a mounting block, the two pressing plates are respectively arranged at one ends of the two clamping arms, the other ends of the clamping arms are respectively hinged to the mounting block, and one ends of the clamping arms can rotate around the other ends of the clamping arms, so that the heat-sealing blocks are folded or separated; and the two bag squeezing plates are oppositely arranged and are respectively and elastically connected to the two pressing plates through first elastic pieces, and the two bag squeezing plates are both positioned below the corresponding heat sealing blocks, wherein in a natural state, at least one bag squeezing plate is ahead of the corresponding heat sealing blocks, so that the time for separating the two bag squeezing plates from the bag body is later than that of the two heat sealing blocks. The utility model provides a heat-seal mechanism, the bag body is reliable with the heat-seal separation, and bag body leakproofness is good.

Description

Heat sealing mechanism

Technical Field

The utility model relates to a heat-seal technical field, specifically speaking relates to a heat-seal mechanism.

Background

Along with the development and demand of society, the application of using plastic film to package products is more and more extensive. The heat seal on the existing packaging machinery is controlled by a temperature control meter to heat the heating tube, so that the whole heat seal is kept at a certain temperature value. When the bag body is subjected to heat sealing, the bag body is clamped by the two opposite heat sealing ports and kept for a preset time, so that the bag body is subjected to heat melting to realize sealing, the self-sealing area of the bag body is cut off after the sealing is finished, then the two heat sealing ports are separated, and the bag body is easily adhered to the heat sealing ports in the separation process, so that the current bag body is easily damaged, and meanwhile, the sealing action of the subsequent bag body is also influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat-seal machine constructs, the bag body is reliable with the heat-seal separation, and bag body leakproofness is good.

The utility model discloses a technical scheme that heat-seal machine constructs and adopts is:

a heat-sealing mechanism is used for heat-sealing a bag body and comprises two pressure plates which are oppositely arranged; the two heat sealing blocks are oppositely arranged and respectively fixed on the two pressing plates, and a gap for the bag body to pass through is formed between the two heat sealing blocks; the driving piece comprises two clamping arms and a mounting block, the two pressing plates are respectively arranged at one ends of the two clamping arms, the other ends of the clamping arms are respectively hinged to the mounting block, and one ends of the clamping arms can rotate around the other ends of the clamping arms, so that the heat-sealing blocks are folded or separated; and the two bag squeezing plates are oppositely arranged and are respectively and elastically connected to the two pressing plates through first elastic pieces, and the two bag squeezing plates are both positioned below the corresponding heat sealing blocks, wherein in a natural state, at least one bag squeezing plate is ahead of the corresponding heat sealing blocks, so that the time for separating the two bag squeezing plates from the bag body is later than that of the two heat sealing blocks.

Preferably, both of the bag-squeezing plates are advanced with respect to the corresponding heat-sealing blocks in a natural state.

Preferably, the cutting device further comprises a cutter, and the cutter is fixed to one clamping arm.

Preferably, one surface of one heat seal block facing the other heat seal block is provided with a containing groove for containing the cutter, and the other heat seal block is provided with an avoiding groove opposite to the containing groove.

Preferably, the driving member further comprises a supporting block for supporting the clamping arm, and the supporting block is arranged at one end of the clamping arm close to the heat sealing block.

Preferably, the heat sealing block is provided with a channel for accommodating the heating pipe.

Preferably, the number of the channels is two, and the two channels are distributed at the upper end and the lower end of the heat sealing block in the height direction.

Preferably, the bag-extruding plate includes a connecting plate and an extension plate formed to protrude from the connecting plate toward one side of the other bag-extruding plate, and an end of the extension plate is advanced from the corresponding heat-sealing block.

Preferably, the first elastic element comprises a limiting rod arranged on the pressing plate and the bag squeezing plate in a penetrating mode, and a spring arranged on the limiting rod and used for providing the bag squeezing plate with return elastic force, and the limiting rod is used for limiting the bag squeezing plate to bounce.

Preferably, the two pressing plates are respectively and elastically connected with the clamping arms through second elastic pieces.

The utility model discloses a heat-seal machine constructs's beneficial effect is: one end of the clamping arm rotates around the other end of the clamping arm to enable the heat-sealing block to be folded, the two bag squeezing plates contact and clamp the bag body before the heat-sealing block, the two heat-sealing blocks and the two pressing plates are folded continuously until the bag body is clamped, and the first elastic piece is compressed in the process. During the separation, two arm lock antiport drive two heat seal pieces and separate from one end to the other end gradually, and this disengaging process is littleer to the power of tearing of the bag body. And in the process, the first elastic piece extends to enable the two bag squeezing plates to be separated from the bag body later than the heat sealing block, so that the bag body cannot be adhered to the heat sealing block, and the bag body is stably and reliably separated from the heat seal.

Drawings

Fig. 1 is a schematic structural view of the heat sealing mechanism of the present invention.

Fig. 2 is a left side view of the heat sealing mechanism of the present invention.

Fig. 3 is a bottom view of the heat sealing mechanism of the present invention.

Detailed Description

The invention will be further elucidated and described with reference to the following embodiments and drawings in which:

referring to fig. 1, 2 and 3, a heat sealing mechanism for heat sealing a bag body includes two pressing plates 10, two heat sealing blocks 20, a driving member 30 and two bag squeezing plates 40.

The two pressing plates 10 are oppositely arranged. The two heat-seal blocks 20 are fixed to the two pressing plates 10, respectively, and keep their positions opposite to each other, and a gap for the bag to pass through is formed between the two heat-seal blocks 20.

The driving member 30 is used for driving the two heat sealing blocks 20 to close and separate. Specifically, the driving member 30 includes two clamping arms 31 and a mounting block 32, the two pressing plates 10 are respectively disposed at one ends of the two clamping arms 31, and the other ends of the clamping arms 31 are respectively hinged to the mounting block 32. One end of the clamp arm 31 can rotate around the other end to fold or separate the heat-seal blocks 20. The driving member 30 further includes a supporting block 33, and the supporting block 33 is disposed at one end of the clamping arm 31 close to the heat sealing block 20 and is used for supporting the clamping arm 31.

The two bag squeezing plates 40 are respectively elastically connected to the two pressing plates 10 through first elastic members 41, and the two bag squeezing plates 40 are also opposite in position. Both bag gussets 40 are located below the corresponding heat seal block 20. In the natural state, at least one bag squeezing plate 40 is ahead of the corresponding heat sealing block 20, so that the two bag squeezing plates 40 are separated from the bag body later than the two heat sealing blocks 20. Referring to fig. 2, preferably, in a natural state, both bag squeezing plates 40 are advanced with respect to the corresponding heat sealing blocks 20.

The heat sealing mechanism further comprises a cutter 50, and the cutter 50 is fixed on the clamping arm 31. Specifically, one surface of one heat seal block 20 facing the other heat seal block 20 is provided with an accommodating groove 21, the accommodating groove 21 is used for accommodating the cutter 50, and the other heat seal block 20 is provided with an avoiding groove 22 opposite to the accommodating groove 21.

In the above solution, the two pressing plates 10 are respectively elastically connected to the clamping arm 31 through the second elastic member 34. Specifically, when the two clamping arms 31 are engaged, the two heat sealing blocks 20 are closed. After waiting for a preset time, the two clamping arms 31 continue to rotate by a preset angle in the original direction, the cutter 50 fixed to the clamping arms 31 moves along with the clamping arms 31 and moves from the accommodating groove 21 to the avoiding groove 22, the cut-off of the sealed bag body is completed, the two heat sealing blocks 20 are not moved in the process, and the second elastic piece 34 between the pressing plate 10 and the clamping arms 31 is compressed. The second elastic member 34 is a spring, and a pin shaft is inserted into the spring and used for limiting radial runout of the second elastic member 34.

The heat sealing block 20 is opened with a passage 23 for accommodating a heating pipe. The specific number of the channels 23 is two, and the two channels 23 are distributed at the upper end and the lower end of the heat seal block 20 in the height direction.

In the above-described aspect, the pouch plate 40 includes a connection plate 42 and an extension plate 43 formed to protrude from the connection plate 42 toward one surface of the other pouch plate 40, and the end of the extension plate 43 is advanced from the corresponding heat seal block 20.

In the above scheme, the first elastic element 41 includes a limiting rod penetrating through the pressing plate 10 and the bag squeezing plate 40, and a spring arranged on the limiting rod and used for providing the return elastic force of the bag squeezing plate 40, one end of the limiting rod is fastened on the pressing plate 10 through a nut, and the limiting rod is used for limiting the radial run-out of the bag squeezing plate 40.

The utility model discloses a heat-seal mechanism, 31 one end of arm lock rotate around the other end, make the heat-seal piece folds, and two crowded pocket boards 40 are earlier than the contact of heat-seal piece 20 and press from both sides tight bag body, and two heat-seal pieces 20 and two clamp plates 10 continue to fold until pressing from both sides tight bag body, and the first elastic component 41 of in-process is compressed. During separation, the two clamping arms 31 rotate reversely to drive the two heat sealing blocks 20 to gradually separate from one end to the other end, and the tearing force of the bag body in the separation process is smaller. In addition, the first elastic element 41 extends in the process, so that the two bag squeezing plates 40 are separated from the bag body later than the heat sealing block 20, the bag body cannot be adhered to the heat sealing block 20, and the bag body is stably and reliably separated from the heat sealing opening.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A heat-sealing mechanism for heat-sealing a bag body, comprising

Two pressure plates which are oppositely arranged;

the two heat sealing blocks are oppositely arranged and respectively fixed on the two pressing plates, and a gap for the bag body to pass through is formed between the two heat sealing blocks;

the driving piece comprises two clamping arms and a mounting block, the two pressing plates are respectively arranged at one ends of the two clamping arms, the other ends of the clamping arms are respectively hinged to the mounting block, and one ends of the clamping arms can rotate around the other ends of the clamping arms, so that the heat-sealing blocks are folded or separated; and

the bag squeezing device comprises two bag squeezing plates which are oppositely arranged, wherein the two bag squeezing plates are respectively and elastically connected to two pressing plates through first elastic pieces, the two bag squeezing plates are located below corresponding heat sealing blocks, at least one bag squeezing plate is ahead of the corresponding heat sealing blocks in a natural state, and the time for separating the two bag squeezing plates from a bag body is later than that for separating the two bag squeezing plates from the bag body.

2. A heat seal mechanism as recited in claim 1 wherein both of said bag jaws are advanced with respect to the corresponding heat seal block in a natural state.

3. A heat seal mechanism as recited in claim 1 further comprising a cutter attached to a clamp arm.

4. A heat sealing mechanism as claimed in claim 3, wherein a face of one of the heat sealing blocks facing the other heat sealing block is provided with a receiving groove for receiving the cutting blade, and the other heat sealing block is provided with an avoiding groove opposite to the receiving groove.

5. A heat sealing mechanism as recited in claim 1 wherein said drive member further comprises a support block for supporting said clamp arm, said support block being disposed at an end of said clamp arm adjacent said heat sealing block.

6. The heat sealing mechanism of claim 1, wherein the heat sealing block defines a channel for receiving a heating tube.

7. A heat seal mechanism as recited in claim 6, wherein there are two of said passages, and two of said passages are disposed at upper and lower ends of the heat seal block in the height direction.

8. A heat seal mechanism as recited in claim 1, wherein said bag gussets include a web and an extension plate formed projecting from the web toward one side of the other bag gusset, the distal end of said extension plate leading the corresponding heat seal block.

9. The heat sealing mechanism according to claim 1, wherein the first elastic member includes a limiting rod penetrating through the pressing plate and the bag squeezing plate, and a spring provided on the limiting rod for providing a return elastic force to the bag squeezing plate, and the limiting rod is used for limiting the bounce of the bag squeezing plate.

10. The heat sealing mechanism according to claim 1, wherein the two pressing plates are respectively elastically connected with the clamping arms through second elastic members.