A flexible locking mechanism for bottom mold capable of linear compensation

Abstract

The present invention discloses a bottom mold flexible locking mechanism capable of linear compensation, comprising a first connecting seat for connecting the bottom mold, a second connecting seat for connecting the bottom mold bracket, the first connecting seat and the second connecting seat are arranged along a first direction, the first connecting seat can be reciprocated relative to the second connecting seat along a second direction and is arranged on the second connecting seat, the second direction is perpendicular to the first direction; the bottom mold flexible locking mechanism also includes an adsorption component arranged between the first connecting seat and the second connecting seat and used to adsorb the two, and an elastic component arranged between the first connecting seat and the second connecting seat, the elastic expansion and contraction direction of the elastic component is parallel to the second direction. The present invention discloses a bottom mold flexible locking mechanism capable of linear compensation, the bottom mold and the bottom mold bracket are flexibly connected, the bottom mold can perform linear compensation toward the fixed side of the mold after mold closing, and at the same time can avoid damaging the connection structure between the bottom mold and the bottom mold bracket.

Description

Technical Field

[0001] The invention relates to the technical field of bottle blowing, and in particular to a bottom mold flexible locking mechanism capable of linear compensation. Background Art

[0002] The bottle blowing machine is a key equipment for producing bottles for various liquid packaging. Plastic bottles are blown from preforms. The heated preforms are sent to the molds (including the left mold, the right mold and the bottom mold). The molds are closed, and the clamping mechanism locks the molds. Compensating gas is introduced into one side of the mold to reduce the gap between the left and right molds. Then the sealing unit seals the bottle mouth, and the stretching unit stretches the preform while injecting high-pressure gas according to a certain process to make the preform close to the inner wall of the mold to form a bottle.

[0003] In the prior art, the bottom mold is generally rigidly connected and locked to the bottom mold bracket. The disadvantages of this structure are: 1) when the compensation gas is introduced, the mold and the bottom mold on the side where the compensation gas is introduced will move toward the fixed side mold, which may easily cause the positioning pin to break or other parts to be damaged; 2) when blowing the bottle, there is a lot of noise and impact, which affects the speed and efficiency of the bottle blowing machine. Summary of the invention

[0004] The purpose of the present invention is to provide a flexible locking mechanism for a bottom mold that can be linearly compensated. The bottom mold and the bottom mold bracket are flexibly connected. After the mold is closed, the bottom mold can perform linear compensation toward the fixed side of the mold under the action of compensation gas, and reset under the action of an elastic component after the compensation is completed, thereby avoiding damage to the connection structure between the bottom mold and the bottom mold bracket.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A bottom mold flexible locking mechanism capable of linear compensation comprises a first connecting seat for connecting the bottom mold and a second connecting seat for connecting the bottom mold support, wherein the first connecting seat and the second connecting seat are arranged along a first direction, and the first connecting seat is arranged on the second connecting seat so as to be reciprocating relative to the second connecting seat along a second direction, and the second direction is perpendicular to the first direction;

[0007] The bottom mold flexible locking mechanism also includes an adsorption component arranged between the first connecting seat and the second connecting seat and used to adsorb the two, and an elastic component arranged between the first connecting seat and the second connecting seat, and the elastic expansion and contraction direction of the elastic component is parallel to the second direction.

[0008] Preferably, the bottom mold flexible locking mechanism further includes a limiting assembly provided between the first connecting seat and the second connecting seat, and the limiting assembly is used to limit the first connecting seat along the second direction.

[0009] More preferably, the limiting assembly includes a limiting groove provided on one of the first connecting seat and the second connecting seat, and a limiting slider provided on the other of the first connecting seat and movable along the length extension direction of the limiting groove, the sliding direction of the limiting slider being parallel to the second direction, and the length of the limiting slider along the second direction being shorter than the length of the limiting groove along the second direction.

[0010] More preferably, there are two groups of the limiting components, which are arranged at intervals along the second direction.

[0011] Preferably, the adsorption assembly includes a first magnetic component provided on the first connecting seat and a second magnetic component provided on the second connecting seat, and the first connecting seat and the second connecting seat are magnetically adsorbed by the first magnetic component and the second magnetic component.

[0012] More preferably, the first magnetic member is recessed in a side surface of the first connecting seat facing the second connecting seat, and the second magnetic member is recessed in a side surface of the second connecting seat facing the first connecting seat.

[0013] Preferably, one of the first connecting seat and the second connecting seat has a first shaft protruding outwardly thereon, and the other has a connecting member protruding outwardly thereon, and the connecting member has a second shaft, and the elastic component is a spring with two ends respectively connected to the first shaft and the second shaft.

[0014] More preferably, the first axis and the second axis are respectively parallel to the second direction.

[0015] More preferably, when the first connection seat and the second connection seat are adsorbed on each other, the first connection seat can move relative to the second connection seat along the second direction, and the spring is extended or shortened.

[0016] Preferably, the first connecting seat is provided with a mounting sleeve for mounting the bottom mold.

[0017] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the present invention has a flexible locking mechanism for a bottom mold that can be linearly compensated, and the bottom mold and the bottom mold bracket are adsorbed and connected by an adsorption component along a first direction, and elastically connected by an elastic component along a second direction; after mold closing, the bottom mold and the mold on the compensation gas inlet side can move as a whole toward the fixed side mold, and when the bottom mold moves linearly with respect to the bottom mold bracket, due to the flexible connection between the first connecting seat and the second connecting seat, the rigid impact can be reduced and damage to the connection structure between the two can be avoided; after bottle blowing is completed, the elastic component can also provide an elastic restoring force for resetting the bottom mold and the first connecting seat, so that the bottom mold is reset to facilitate smooth mold opening; at the same time, this flexible connection can reduce vibration and noise, and is conducive to the smooth and efficient operation of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is a structural schematic diagram of a bottom mold flexible locking mechanism according to a specific embodiment of the present invention;

[0019] Attached Figure 2 A cross-sectional view of a bottom mold flexible locking mechanism according to a specific embodiment of the present invention Figure 1 ;

[0020] Attached Figure 3 A cross-sectional view of a bottom mold flexible locking mechanism according to a specific embodiment of the present invention Figure 2 ;

[0021] Attached Figure 4 A cross-sectional view of a bottom mold flexible locking mechanism according to a specific embodiment of the present invention Figure 3 ;

[0022] Attached Figure 5 For attachment Figure 1 A schematic diagram of the structure of the lower split body of the first connecting seat;

[0023] Attached Figure 6 For attachment Figure 1 Schematic diagram of the structure of the second connecting socket.

[0024] Among them: 1. first connecting seat; 11. mounting sleeve; 12. upper split body; 13. lower split body; 131. first slot hole; 132. limiting slider; 2. second connecting seat; 21. second slot hole; 22. connecting piece; 23. limiting groove; 3. first magnetic piece; 4. second magnetic piece; 5. first axis; 6. second axis; 7. spring. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below in conjunction with specific embodiments and drawings.

[0026] See also Figure 1-6 As shown, this embodiment provides a bottom mold flexible locking mechanism capable of linear compensation, comprising a first connecting seat 1 for connecting the bottom mold (not shown in the figure), and a second connecting seat 2 for connecting the bottom mold bracket (not shown in the figure). The first connecting seat 1 and the second connecting seat 2 are connected along a first direction (i.e. Figure 4 The first connection seat 1 is arranged in the up-down direction in the middle, and the first connection seat 1 is located above the second connection seat 2. The first connection seat 1 can be arranged relative to the second connection seat 2 along the second direction (i.e. Figure 4 The second connecting seat 2 is provided with a reciprocating motion (in the left and right direction), and the second direction is perpendicular to the first direction.

[0027] See also Figure 1 , 3As shown, in this embodiment, the first connection seat 1 is cylindrical as a whole, and a mounting sleeve 11 for mounting the bottom mold is provided in the center of the first connection seat 1. The first connection seat 1 is formed by an upper sub-body 12 and a lower sub-body 13 assembled and assembled by screws, the upper sub-body 12 and the lower sub-body 13 located therebelow are abutted in sequence along the first direction, and the mounting sleeve 11 simultaneously penetrates the upper sub-body 12 and the lower sub-body 13 along the first direction.

[0028] The above-mentioned bottom mold flexible locking mechanism capable of linear compensation also includes an adsorption component arranged between the first connecting seat 1 and the second connecting seat 2 and used to adsorb the two, and an elastic component arranged between the first connecting seat 1 and the second connecting seat 2, and the elastic expansion and contraction direction of the elastic component is parallel to the second direction.

[0029] See also Figure 5-6 As shown, the lower surface of the lower body 13 is recessed upward to form a plurality of first slots 131 for placing the first magnetic member 3 in a one-to-one correspondence, and the upper surface of the second connecting seat 2 is recessed downward to form a plurality of second slots 21 for placing the second magnetic member 4 in a one-to-one correspondence. The adsorption assembly includes a first magnetic member 3 and a second magnetic member 4 that can be mutually adsorbed along a first direction, and the first connecting seat 1 and the second connecting seat 2 are connected by magnetic adsorption through the first magnetic member 3 and the second magnetic member 4.

[0030] In this embodiment, there are a plurality of first slots 131 and a plurality of second slots 21, and they are aligned one by one along the first direction. The number and arrangement of the first slots 131 can be adjusted as needed. Figure 5 In the embodiment, there are six first slots 131, which are arranged in sequence along the circumferential direction; correspondingly, there are six second slots 21, which are arranged in sequence along the circumferential direction. The first magnetic member 3 and the first slots 131 can be connected to each other by bonding, nesting, or screw fixing. Figure 2 As shown, in this embodiment, the two are fixedly connected by screws.

[0031] See also Figure 1 , 5 -6, in this embodiment, the second connecting seat 2 is cylindrical as a whole, the first shaft 5 is provided on the circumferential surface of the lower split body 13 in a radially outwardly convex manner, the connecting member 22 is provided on the circumferential surface of the second connecting seat 2 in a radially outwardly convex manner, the end of the connecting member 22 away from the second connecting seat 2 is upwardly convex, and the second shaft 6 is provided on the inner side of the upwardly convex end of the connecting member 22. The first shaft 5 and the second shaft 6 are arranged at intervals, extend coaxially and are respectively parallel to the second direction.

[0032] The elastic component is a spring 7 with two ends respectively connected to the first shaft 5 and the second shaft 6. In this embodiment, the two ends of the spring 7 are respectively sleeved on the first shaft 5 and the second shaft 6.

[0033] When the first connection seat 1 and the second connection seat 2 are mutually attracted, under the action of external force, the first connection seat 1 can move relative to the second connection seat 2 along the second direction, and the spring 7 is stretched or compressed. In this embodiment, the spring 7 is a compression spring, and when the first connection seat 1 moves relative to the second connection seat 2, the compression spring is compressed.

[0034] The bottom mold and the bottom mold support are connected by adsorption in the first direction through the adsorption component, and are elastically connected in the second direction through the elastic component. After the mold is closed, when the bottom mold moves linearly relative to the bottom mold support (i.e. Figure 4 In the embodiment, the first connecting seat 1 moves to the right relative to the second connecting seat 2), due to the flexible connection between the first connecting seat 1 and the second connecting seat 2, the rigid impact can be reduced and the connection structure between the two can be avoided from being damaged; after the bottle blowing is completed, the elastic component can also provide an elastic restoring force for the bottom mold and the first connecting seat 1 to reset, so that the bottom mold can be reset for smooth mold opening. In other words, the force of the compensation gas driving the bottom mold to move to the right relative to the bottom mold bracket can overcome the static friction force between the first connecting seat 1 and the second connecting seat 2 due to magnetic adsorption, so that the two can move relative to each other; the force of the elastic component driving the bottom mold to move to the left relative to the bottom mold bracket can also overcome the static friction force between the first connecting seat 1 and the second connecting seat 2 due to magnetic adsorption, so that the two can move relative to each other.

[0035] See also Figure 4-6 As shown, the distance that the first connection seat 1 moves left and right relative to the second connection seat 2 is shorter than the width of the first magnetic member 3 and the second magnetic member 4 along the left and right direction, so that the first magnetic member 3 and the corresponding second magnetic member 4 can be prevented from being completely disengaged when the first connection seat 1 moves relative to the second connection seat 2, and the magnetic adsorption force between the first magnetic member 3 and the corresponding second magnetic member 4 can be maintained. In this embodiment, the distance that the first connection seat 1 moves left and right relative to the second connection seat 2 does not exceed half of the width of the first magnetic member 3 and the second magnetic member 4 along the left and right direction.

[0036] The above-mentioned bottom mold flexible locking mechanism capable of linear compensation further includes a limiting component arranged between the first connecting seat 1 and the second connecting seat 2, and the limiting component is used to limit the first connecting seat 1 along the second direction.

[0037] See also Figure 4 As shown, the limiting assembly includes a limiting groove 23 recessed downwardly on the upper surface of the second connecting seat 2, and a limiting slider 132 protruding downwardly on the lower surface of the lower split body 13, and the limiting slider 132 can be slidably arranged in the limiting groove 23 along the length extension direction of the limiting groove 23. The sliding direction of the limiting slider 132 is parallel to the second direction, and the length of the limiting slider 132 along the second direction is shorter than the length of the limiting groove 23 along the second direction.

[0038] Through this arrangement, the distance that the limiting slider 132 slides left and right in the limiting groove 23 is the distance that the bottom mold can move left and right relative to the bottom mold support. Figure 4 In the embodiment, the limiting slider 132 is pressed against the left side of the limiting groove 23 by the elastic component, and there is a gap between the right side of the limiting slider 132 and the right side of the limiting groove 23. Figure 4 The middle is the initial position, and the spring 7 is a compression spring and is in a compressed state. After the mold is closed, under the action of the compensation gas, the bottom mold can make a linear compensation movement to the right. After the right side of the limit slider 132 is pressed against the right side of the limit groove 23, the bottom mold reaches the maximum linear compensation displacement. In the actual operation process, the displacement of the bottom mold can be less than the maximum linear compensation displacement.

[0039] In this embodiment, there are two groups of limit assemblies, which are arranged in sequence and spaced apart along the second direction.

[0040] The working process of this embodiment is described in detail below:

[0041] After the mold is closed, compensation air is introduced into the left side of the mold to make the left mold and the bottom mold move rightward synchronously, and the first connecting seat 1 moves rightward relative to the second connecting seat 2 until the limiting slider 132 contacts the right side of the limiting groove 23 to the right, and the spring 7 is compressed at this time;

[0042] After bottle blowing is completed, the supply of compensation gas is stopped. Under the action of the spring 7, the first connecting seat 1 moves leftward relative to the second connecting seat 2 until the limiting slider 132 contacts the left side of the limiting groove 23 to the left, thereby resetting the first connecting seat 1 and the bottom mold.

[0043] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A bottom mold flexible locking mechanism capable of linear compensation, characterized in that: It comprises a first connection seat for connecting the bottom mold and a second connection seat for connecting the bottom mold support, the first connection seat and the second connection seat are arranged along a first direction, the first connection seat can reciprocate relative to the second connection seat along a second direction and is arranged on the second connection seat, the second direction is perpendicular to the first direction; The bottom mold flexible locking mechanism also includes an adsorption component arranged between the first connecting seat and the second connecting seat and used to adsorb the two, and an elastic component arranged between the first connecting seat and the second connecting seat, and the elastic expansion and contraction direction of the elastic component is parallel to the second direction.

2. A bottom mold flexible locking mechanism capable of linear compensation according to claim 1, characterized in that: The bottom mold flexible locking mechanism also includes a limiting component arranged between the first connecting seat and the second connecting seat, and the limiting component is used to limit the first connecting seat along the second direction.

3. A bottom mold flexible locking mechanism capable of linear compensation according to claim 2, characterized in that: The limiting assembly includes a limiting groove provided in one of the first connecting seat and the second connecting seat, and a limiting slider provided on the other of the first connecting seat and movable along the length extension direction of the limiting groove, wherein the sliding direction of the limiting slider is parallel to the second direction, and the length of the limiting slider along the second direction is shorter than the length of the limiting groove along the second direction.

4. A bottom mold flexible locking mechanism capable of linear compensation according to claim 2, characterized in that: There are two groups of the limiting components, which are arranged at intervals along the second direction.

5. The bottom mold flexible locking mechanism capable of linear compensation according to claim 1, characterized in that: The adsorption assembly includes a first magnetic component disposed on the first connection seat and a second magnetic component disposed on the second connection seat. The first connection seat and the second connection seat are magnetically adsorbed by the first magnetic component and the second magnetic component.

6. A bottom mold flexible locking mechanism capable of linear compensation according to claim 5, characterized in that: The first magnetic component is recessed in a side surface of the first connecting base facing the second connecting base, and the second magnetic component is recessed in a side surface of the second connecting base facing the first connecting base.

7. The bottom mold flexible locking mechanism capable of linear compensation according to claim 1, characterized in that: One of the first connecting seat and the second connecting seat has a first shaft protruding outwardly thereon, and the other has a connecting member protruding outwardly thereon, and the connecting member has a second shaft. The elastic component is a spring with two ends respectively connected to the first shaft and the second shaft.

8. The bottom mold flexible locking mechanism capable of linear compensation according to claim 7, characterized in that: The first axis and the second axis are respectively parallel to the second direction.

9. The bottom mold flexible locking mechanism capable of linear compensation according to claim 7, characterized in that: When the first connection seat and the second connection seat are attracted to each other, the first connection seat can move relative to the second connection seat along the second direction, and the spring is extended or shortened.

10. The bottom mold flexible locking mechanism capable of linear compensation according to claim 1, characterized in that: The first connecting seat is provided with a mounting sleeve for mounting the bottom mold.

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