Die pressure cylinder mounting structure

Abstract

The utility model discloses a die pressure cylinder installation structure which comprises a cylinder body, a piston rod arranged in the cylinder body and a piston installed on the piston rod, the piston is matched with the cylinder body to form a piston structure, and the piston comprises a piston body, a piston gland installed on the piston body and a connecting piece located between the piston gland and the piston body. The piston body and the piston gland are fixedly connected through a bolt, a groove for the connecting piece to be embedded in is formed in the side face of the piston rod, and the connecting piece is matched with the groove of the piston rod to form axial fixation. The piston gland and the piston body are installed on the piston rod through connecting pieces. The service life can be prolonged by optimizing the mounting structure of the pressure cylinder, and the problem of bolt breakage is avoided.

Description

Technical Field

[0001] The utility model relates to mold equipment, in particular to a mold booster cylinder installation structure. Background Art

[0002] The molding of the mold generally requires the cooperation of the static mold and the dynamic mold, which together form a cavity for injection molding. During this cooperation process, the sealing between the static mold and the dynamic mold needs to be ensured, so sufficient pressure needs to be provided. The component that provides this pressure can be called a booster cylinder.

[0003] The current boost cylinder is mainly composed of a cylinder body, a piston rod, and a piston. The current piston is directly installed on the end of the piston rod by bolts. During the movement and operation of the piston, the axial pressure and tension are relatively large, which can easily cause the bolts to break and affect the service life. Therefore, the current boost cylinder structure needs to be optimized to improve the service life of the boost cylinder. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a mold booster cylinder mounting structure, which can improve the service life and avoid the problem of bolt breakage by optimizing the mounting structure of the booster cylinder.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mold booster cylinder installation structure, comprising a cylinder body, a piston rod arranged in the cylinder body, and a piston installed on the piston rod, the piston and the cylinder body cooperate to form a piston structure, the piston comprises a piston body, a piston pressure cover installed on the piston body, and a connecting piece located between the piston pressure cover and the piston body; the piston body and the piston pressure cover are fixedly connected by bolts, and the side of the piston rod is provided with a groove for embedding the connecting piece, and the connecting piece cooperates with the groove of the piston rod to form axial fixation; the piston pressure cover and the piston body are installed on the piston rod through the connecting piece.

[0006] As a further improvement of the utility model, the piston gland and / or the piston body are provided with a groove for embedding the connecting piece, and the piston gland and the piston body cooperate to press the connecting piece.

[0007] As a further improvement of the utility model, the groove extends along the circumference of the piston rod to form a ring; the connecting piece is ring-shaped and matched with the groove; the clamping groove is ring-shaped and matched with the connecting piece.

[0008] As a further improvement of the utility model, the clamping groove is located on the piston gland.

[0009] As a further improvement of the utility model, a step is radially arranged on the piston rod, and the step is used to support the piston body.

[0010] As a further improvement of the present invention, the surface of the piston body corresponding to the connecting piece and the groove form a planar transition, and are used together to support the connecting piece.

[0011] As a further improvement of the present invention, the connecting member comprises a plurality of arc-shaped assemblies, and a plurality of the assemblies are combined to form a circular ring.

[0012] As a further improvement of the present invention, the radian of each of the assemblies does not exceed π radians.

[0013] The beneficial effect of the utility model is that the piston body and the piston cover are combined to compress the connecting piece, and the connecting piece is connected to the groove on the upper side of the piston rod. The strength of the connecting piece can be changed by setting the thickness and width, and the modification is more convenient. The problem that the bolt connection is easy to break is also overcome. The axial support has higher strength, and the connection between the piston body and the piston cover will not be subjected to excessive axial force. Therefore, tightening with bolts will not cause the problem of excessive force affecting the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the piston structure of the utility model;

[0018] Figure 5 for Figure 2 A schematic diagram of a cross-section of the piston structure;

[0019] Figure 6 for Figure 3 A magnified schematic diagram of part A in FIG.

[0020] Figure numbers: 1, cylinder body; 2, piston rod; 21, groove; 22, step; 31, piston body; 32, piston gland; 33, connecting piece; 4, slot. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0022] Reference Figure 1-6 As shown,

[0023] A mold booster cylinder installation structure includes a cylinder body 1, a piston rod 2 arranged in the cylinder body 1, and a piston installed on the piston rod 2. The piston cooperates with the cylinder body 1 to form a piston structure. The piston includes a piston body 31, a piston gland 32 installed on the piston body 31, and a connecting piece 33 located between the piston gland 32 and the piston body 31; the piston body 31 and the piston gland 32 are fixedly connected by bolts, and a groove 21 for the connecting piece 33 to be embedded is provided on the side of the piston rod 2, and the connecting piece 33 cooperates with the groove 21 of the piston rod 2 to form axial fixation; the piston gland 32 and the piston body 31 are installed on the piston rod 2 through the connecting piece 33.

[0024] The connection between the piston and the piston rod 2 of the present solution is achieved through a connecting piece 33. Specifically, the piston body 31 and the piston cover 32 are combined to compress the connecting piece 33, and the connecting piece 33 is connected to the groove 21 on the upper side of the piston rod 2. The strength of the connecting piece 33 can be changed by setting the thickness and width, and the modification is more convenient, which also overcomes the problem of easy breakage of bolted connections.

[0025] During the assembly process, the piston body 31 is first sleeved on the piston rod 2, and then the connecting piece 33 is installed on the piston rod 2, and finally the piston gland 32 is sleeved, and the piston gland 32 and the piston body 31 are fastened by bolts. In this installation method, the connection between the piston and the piston rod 2 is transitioned to the connecting piece 33, the axial support strength is higher, and the connection between the piston body 31 and the piston gland 32 will not be subjected to excessive axial force, so the problem of excessive force affecting the service life will not occur when fastening by bolts.

[0026] In this solution, the connecting member 33 may be in the shape of a strip or a block, and is used to be embedded in the groove 21. The number of the groove 21 and the connecting member 33 may be multiple and evenly distributed in the circumferential direction, so as to achieve a uniform connection.

[0027] In a preferred solution, a slot 4 for inserting the connecting piece 33 is provided on the piston gland 32 and / or the piston body 31 , and the piston gland 32 and the piston body 31 cooperate to press the connecting piece 33 .

[0028] The arrangement of the slot 4 can cooperate with the piston body 31 and the piston gland 32 to cover, that is, to limit or press the connecting member 33, so that the connecting member 33 can be stably installed in the slot 4. Then the piston body 31 and the piston gland 32 are installed on the piston rod 2.

[0029] As an implementation scheme capable of improving the connection strength, the groove 21 extends along the circumference of the piston rod 2 to form a ring; the connecting piece 33 is annular and matched with the groove 21; the slot 4 is annular and matched with the connecting piece 33.

[0030] The annular connecting piece 33 has high axial supporting strength, and cooperates with the annular clamping groove 4 and the groove 21 to make installation more convenient and better adaptable, and the connecting piece 33 is not easy to loosen.

[0031] Preferably, the slot 4 is located on the piston gland 32. Based on this arrangement, the installation of the connecting member 33 and the piston rod 2 can be made more convenient.

[0032] At the same time, in order to facilitate the installation of the piston body 31 , a step 22 is radially arranged on the piston rod 2 , and the step 22 is used to support the piston body 31 .

[0033] The step 22 can support the piston body 31 . When the piston body 31 is installed in place, it will abut against the step 22 , thereby achieving position limiting and support, and playing a role of indicating that the piston body 31 is installed in place.

[0034] Based on the design that the step 22 and the groove 4 are located on the piston gland 32 , the surface of the piston body 31 corresponding to the connecting piece 33 and the groove 21 form a planar transition and are used together to support the connecting piece 33 .

[0035] When the piston body 31 is installed in place, a planar transition can be formed between the piston body 31 and the connecting piece 33, which has a positioning effect on the connecting piece 33. When the connecting piece 33 rests on the surface of the piston body 31, it can align with the groove 21, thereby facilitating the installation between the connecting piece 33 and the piston shaft.

[0036] At this time, the surface of the piston body 31 can cooperate with the groove 21 to support the connecting member 33 and also play a limiting role, so that no axial displacement occurs between the piston body 31 and the piston rod 2.

[0037] In order to facilitate the installation of the connecting member 33, as shown in Figures 2, 4 and 5, the connecting member 33 includes a plurality of arc-shaped assemblies, which are combined to form a ring. The arc of each assembly is preferably no more than π radians.

[0038] The arc-shaped assemblies are combined with each other, which makes installation more convenient. They can be installed into the groove 21 from the side and combined into a ring in the groove 21. The arc of each assembly does not exceed π arcs, which makes installation more convenient and will not cause obstacles.

[0039] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A mold booster cylinder installation structure, comprising a cylinder body, a piston rod arranged in the cylinder body, and a piston installed on the piston rod, wherein the piston cooperates with the cylinder body to form a piston structure, characterized in that: The piston includes a piston body, a piston gland installed on the piston body, and a connecting piece located between the piston gland and the piston body; the piston body and the piston gland are fixedly connected by bolts, and a groove for embedding the connecting piece is provided on the side of the piston rod, and the connecting piece cooperates with the groove of the piston rod to form axial fixation; the piston gland and the piston body are installed on the piston rod through the connecting piece.

2. The mold booster cylinder installation structure according to claim 1, characterized in that: The piston gland and / or the piston body are provided with a slot for embedding the connecting piece, and the piston gland and the piston body cooperate to press the connecting piece.

3. The mold booster cylinder installation structure according to claim 2, characterized in that: The groove extends along the circumference of the piston rod to form a ring shape; the connecting piece is ring-shaped and matches the groove; the clamping groove is ring-shaped and matches the connecting piece.

4. The mold booster cylinder installation structure according to claim 3, characterized in that: The clamping groove is located on the piston gland.

5. The mold booster cylinder installation structure according to claim 4, characterized in that: The piston rod is also radially provided with a step, which is used to support the piston body.

6. The mold booster cylinder installation structure according to claim 5, characterized in that: The surface of the piston body corresponding to the connecting piece and the groove form a planar transition and are used together to support the connecting piece.

7. The mold booster cylinder mounting structure according to any one of claims 3 to 6, characterized in that: The connecting piece comprises a plurality of arc-shaped assemblies, and a plurality of the assemblies are combined with each other to form a circular ring.

8. The mold booster cylinder installation structure according to claim 7, characterized in that: The arc of each of the assemblies does not exceed π radians.

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