Three-layer co-extrusion blow molding machine head

Abstract

The utility model relates to the technical field of blow molding machines, and discloses a three-layer co-extrusion blow molding machine head which comprises a machine head body, a feeding pipe is arranged at the bottom of the machine head, a first feeding pipe, a second feeding pipe and a third feeding pipe are connected to the feeding pipe in an inserted mode, the first feeding pipe is located on the upper portion of the second feeding pipe, and the third feeding pipe is located on the lower portion of the second feeding pipe. The second feeding pipe is located on the upper portion of the third feeding pipe, a feeding screw is arranged in the feeding pipe, a discharging port is formed in the machine head body, a cutting assembly is arranged outside the discharging port, a control rod is adjusted to control rotation of an adjusting ring, a linkage rod on the adjusting ring drives a cutting blade to be switched on or off with the discharging port as the center, and the cutting blade is driven to rotate. By means of the cutting mode, the problem that the appearance quality and the size precision of a product are possibly affected due to the fact that the cutting quality is possibly inconsistent due to abrasion or the service life of the cutting device can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of blow molding machines, in particular to a three-layer co-extrusion blow molding machine head. Background Art

[0002] A blow molding machine is a device used to make plastic containers and other plastic products. It gets its name from the fact that it injects molten plastic pellets into a cavity and performs blow molding in the cavity.

[0003] Extrusion blow molding machines are the most common type, which push pre-melted plastic pellets into a melting screw and then extrude the molten plastic into a hollow tubular shape through an extruder head. Next, through the action of the mold and air pressure, the plastic hose expands and fits on the mold surface to form the desired shape. Finally, through the cooling and curing steps, the resulting product is shaped and solidified.

[0004] However, in the continuous production process, the wear or service life of the cutting device may lead to inconsistency in cutting quality, which may affect the appearance quality and dimensional accuracy of the product; therefore, it does not meet the existing needs, and we propose a three-layer co-extrusion blow molding die head. Utility Model Content

[0005] The utility model provides a three-layer co-extrusion blow molding machine head, which has the beneficial effect of being able to cut materials more accurately, solving the problem mentioned in the above background technology that during the continuous production process, the wear or service life of the cutting device may lead to inconsistency in cutting quality, which may affect the appearance quality and dimensional accuracy of the product.

[0006] The utility model provides the following technical solutions: a three-layer co-extrusion blow molding machine head, comprising a machine head body, a feed pipe is arranged at the bottom of the machine head, a first feeding pipe, a second feeding pipe and a third feeding pipe are plugged on the feed pipe, the first feeding pipe is located at the upper part of the second feeding pipe, the second feeding pipe is located at the upper part of the third feeding pipe, a feeding screw is arranged in the feed pipe, a discharge port is opened in the machine head body, the feed pipe is fixedly installed at the bottom of the discharge port, and a cutting assembly is arranged outside the discharge port.

[0007] As an optional solution for a three-layer co-extrusion blow molding machine head described in the utility model, wherein: the cutting assembly includes an inner bracket installed outside the machine head body, an outer bracket is arranged outside the inner bracket, a cutting blade is arranged on the inner bracket, a placement groove is opened on the outer bracket, an adjustment ring is arranged in the placement groove, a connecting rod is installed on the adjusting ring, one end of the connecting rod is connected to the adjusting ring, and the other end of the connecting rod is connected to the cutting blade.

[0008] As an optional solution for a three-layer co-extrusion blow molding machine head described in the utility model, wherein: a limiting rod is installed in the placement groove, a movable groove is opened on the adjustment ring, and the limiting rod is located in the movable groove.

[0009] As an optional solution for a three-layer co-extrusion blow molding machine head described in the utility model, an adjustment groove is opened on the upper side wall of the outer bracket, the adjustment groove is connected to the placement groove, a control rod is installed on the adjustment ring, and the control rod is inserted into the adjustment groove.

[0010] As an optional solution for a three-layer co-extrusion blow molding machine head described in the utility model, wherein: a fixing block is installed inside the inner wall of the adjustment ring, fixing holes are opened on the fixing block and the cutting blade, a fixing rod is installed at the bottom of the connecting rod, and the fixing rod is inserted into the fixing hole.

[0011] As an optional solution for a three-layer co-extrusion blow molding machine head described in the utility model, wherein: a mounting hole and a movable hole are opened on the cutting blade, the movable hole is located on the side of the mounting hole, a mounting rod is inserted in the mounting hole, a push rod is installed at the bottom of the connecting rod, and the push rod is inserted in the movable hole.

[0012] As an optional solution for a three-layer co-extrusion blow molding machine head described in the utility model, wherein: a placement block is installed on the outside of the outer bracket, a placement groove is opened in the placement block, the control rod is located in the placement space, a push rod is arranged in the placement space, the push rod is arranged as a cylinder, and the front end of the push rod is installed with the control rod.

[0013] As an optional solution of a three-layer co-extrusion blow molding die head described in the utility model, wherein: the cutting blades are arranged in five numbers, and the five cutting blades are arranged in a circular array with the discharge port as the center.

[0014] The utility model has the following beneficial effects:

[0015] 1. The three-layer co-extrusion blow molding machine head is provided with a cutting assembly outside the material outlet. The control lever is adjusted to control the rotation of the adjusting ring. The linkage rod on the adjusting ring drives the cutting blade to close the switch centered on the material outlet, so that the material can be cut more accurately. This cutting method can effectively reduce the wear or service life of the cutting device, which may cause inconsistency in cutting quality, thereby affecting the appearance quality and dimensional accuracy of the product.

[0016] 2. The three-layer co-extrusion blow molding machine head is provided with a placement block installed on the outer side of the outer bracket, a placement slot is provided in the placement block, a control rod is located in the placement space, a push rod is provided in the placement space, the push rod is provided as a cylinder, and the front end of the push rod is installed with the control rod. When the push rod controls the rod, the movement of the push rod can drive the movement of the control rod, so that the cutting assembly can be driven to move, thereby realizing automatic control of the cutting assembly, thereby completing the automation of the device and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the side structure of the main body of the utility model.

[0019] Figure 3 It is a schematic diagram of the main structure of the utility model from top view.

[0020] Figure 4 It is a schematic diagram of some detailed structures of the utility model.

[0021] Figure 5 It is a partial side structural schematic diagram of the utility model.

[0022] In the figure: 100, head body; 110, feed pipe; 111, feed screw; 120, first feed pipe; 130, second feed pipe; 140, third feed pipe; 150, discharge port; 200, cutting assembly; 210, inner bracket; 220, outer bracket; 221, placement slot; 222, limit rod; 223, adjustment slot; 230, cutting blade; 231, mounting hole; 232, mounting rod; 233, movable hole; 234, push rod; 240, adjustment ring; 241, movable slot; 242, fixed block; 243, fixed hole; 244, fixed rod; 245, control rod; 250, linkage rod; 260, placement block; 261, placement space; 262, push rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1: This embodiment is intended to promote the solution of the problem that the wear or service life of the cutting device may lead to inconsistency in cutting quality during continuous production, which may affect the appearance quality and dimensional accuracy of the product. Figure 1 - Figure 4 A three-layer co-extrusion blow molding die head includes a die body 100, a feed pipe 110 is arranged at the bottom of the die head, a first feed pipe 120, a second feed pipe 130 and a third feed pipe 140 are plugged on the feed pipe 110, the first feed pipe 120 is located at the upper part of the second feed pipe 130, the second feed pipe 130 is located at the upper part of the third feed pipe 140, a feed screw 111 is arranged in the feed pipe 110, a discharge port 150 is opened in the die body 100, the feed pipe 110 is fixedly installed at the bottom of the discharge port 150, and a cutting assembly 200 is arranged outside the discharge port 150. The rotation of the adjusting ring 240 is controlled by adjusting the control rod 245, and the linkage rod 250 drives the cutting blade 230 to move. The cutting blade 230 accurately cuts the processed plastic material into the required length according to the set cutting position and spacing.

[0025] The working principle of the cutting assembly 200 is to achieve precise cutting operation by controlling the position and movement of the cutting blade 230. The design and adjustment device of the cutting blade 230 can meet the cutting requirements of different products, effectively solving the quality inconsistency problem caused by the wear or service life of the cutting device, thereby improving the appearance quality and dimensional accuracy of the product.

[0026] The cutting assembly 200 includes an inner bracket 210 installed outside the head body 100, an outer bracket 220 is arranged outside the inner bracket 210, a cutting blade 230 is arranged on the inner bracket 210, a placement slot 221 is provided on the outer bracket 220, an adjustment ring 240 is arranged in the placement slot 221, a connecting rod 250 is installed on the adjustment ring 240, one end of the connecting rod 250 is connected to the adjustment ring 240, a limiting rod 222 is installed in the placement slot 221, a movable slot 241 is provided on the adjustment ring 240, and the limiting rod 222 is located in the movable slot 241. The other end of the connecting rod 250 is connected to the cutting blade 230. The design of the limiting rod 222 can limit the range of motion of the adjusting ring 240, and further control the moving range of the cutting blade 230, so as to improve the accuracy and consistency of cutting.

[0027] An adjustment slot 223 is provided on the upper side wall of the outer bracket 220, and the adjustment slot 223 is connected to the placement slot 221. A control rod 245 is installed on the adjustment ring 240, and the control rod 245 is inserted into the adjustment slot 223, so that the operator can adjust the control rod 245 to control the rotation of the adjustment ring 240, thereby adjusting the position and movement of the cutting blade 230.

[0028] A fixing block 242 is installed on the inner wall of the adjusting ring 240 . A fixing hole 243 is provided on the fixing block 242 and the cutting blade 230 . A fixing rod 244 is installed at the bottom of the linkage rod 250 . The fixing rod 244 is inserted into the fixing hole 243 .

[0029] The cutting blade 230 is provided with a mounting hole 231 and a movable hole 233, wherein the movable hole 233 is located at the side of the mounting hole 231, a mounting rod 232 is inserted into the mounting hole 231, a push rod 234 is installed at the bottom of the linkage rod 250, and the push rod 234 is inserted into the movable hole 233, thereby ensuring the stability and accuracy of the cutting blade 230 during the cutting process. By inserting the fixing rod 244 and the fixing block 242, the cutting blade 230 can maintain a fixed position and movement mode to ensure the accuracy of the cutting operation.

[0030] In the present embodiment: a cutting assembly 200 is provided outside the material outlet 150, and the control rod 245 is adjusted to control the rotation of the adjusting ring 240. The linkage rod 250 on the adjusting ring 240 drives the cutting blade 230 to close the switch centered on the material outlet 150, so that the material can be cut more accurately. This cutting method can effectively reduce the wear or service life of the cutting device, which may cause inconsistency in cutting quality, thereby affecting the appearance quality and dimensional accuracy of the product.

[0031] Embodiment 2: This embodiment is intended to promote the solution of the problem that the cutting blade 230 needs to be controlled by manually pushing the control rod 245, thereby reducing the work efficiency. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 - Figure 4 .

[0032] A placement block 260 is installed on the outside of the outer bracket 220, a placement slot 221 is provided in the placement block 260, the control rod 245 is located in the placement space 261, a push rod 262 is provided in the placement space 261, the push rod 262 is configured as a cylinder, the front end of the push rod 262 is installed with the control rod 245, and the front end of the push rod 262 is installed with the control rod 245. When the push rod 262 controls the rod 245, the movement of the push rod 262 can drive the movement of the control rod 245, so that the cutting assembly 200 can be driven to move, so that the cutting assembly 200 can be automatically controlled, thereby completing the automation of the device and improving the work efficiency.

[0033] The number of cutting blades 230 is five, and the five cutting blades 230 are arranged in a circular array with the discharge port 150 as the center, thereby improving the efficiency and accuracy of cutting.

[0034] In this embodiment: a placement block 260 is installed on the outside of the outer bracket 220, a placement slot 221 is provided in the placement block 260, a control rod 245 is located in the placement space 261, a push rod 262 is provided in the placement space 261, the push rod 262 is configured as a cylinder, and the front end of the push rod 262 is installed with the control rod 245. When the push rod 262 controls the rod 245, the movement of the push rod 262 can drive the movement of the control rod 245, so that the cutting assembly 200 can be driven to move, thereby realizing automatic control of the cutting assembly 200, thereby completing the automation of the device and improving the work efficiency.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A three-layer co-extrusion blow molding die head, comprising a die body (100), characterized in that: A feed pipe (110) is provided at the bottom of the machine head, and a first feeding pipe (120), a second feeding pipe (130) and a third feeding pipe (140) are plugged onto the feed pipe (110), the first feeding pipe (120) is located on the upper part of the second feeding pipe (130), and the second feeding pipe (130) is located on the upper part of the third feeding pipe (140), a feeding screw (111) is provided in the feed pipe (110), a discharge port (150) is opened in the machine head body (100), the feed pipe (110) is fixedly installed at the bottom of the discharge port (150), and a cutting assembly (200) is provided outside the discharge port (150).

2. A three-layer co-extrusion blow molding die head according to claim 1, characterized in that: The cutting assembly (200) comprises an inner bracket (210) mounted outside the machine head body (100), an outer bracket (220) being arranged outside the inner bracket (210), a cutting blade (230) being arranged on the inner bracket (210), a placement groove (221) being provided on the outer bracket (220), an adjustment ring (240) being arranged in the placement groove (221), a connecting rod (250) being installed on the adjustment ring (240), one end of the connecting rod (250) being connected to the adjustment ring (240), and the other end of the connecting rod (250) being connected to the cutting blade (230).

3. A three-layer co-extrusion blow molding die head according to claim 2, characterized in that: A limiting rod (222) is installed in the placement groove (221), a movable groove (241) is provided on the adjustment ring (240), and the limiting rod (222) is located in the movable groove (241).

4. A three-layer co-extrusion blow molding die head according to claim 2, characterized in that: An adjustment groove (223) is provided on the upper side wall of the outer bracket (220), and the adjustment groove (223) is communicated with the placement groove (221). A control rod (245) is installed on the adjustment ring (240), and the control rod (245) is inserted into the adjustment groove (223).

5. A three-layer co-extrusion blow molding die head according to claim 2, characterized in that: A fixing block (242) is installed on the inner wall of the adjusting ring (240), and fixing holes (243) are provided on the fixing block (242) and the cutting blade (230). A fixing rod (244) is installed at the bottom of the linkage rod (250), and the fixing rod (244) is inserted into the fixing hole (243).

6. A three-layer co-extrusion blow molding die head according to claim 2, characterized in that: The cutting blade (230) is provided with a mounting hole (231) and a movable hole (233), wherein the movable hole (233) is located at the side of the mounting hole (231), a mounting rod (232) is inserted into the mounting hole (231), and a push rod (234) is installed at the bottom of the linkage rod (250), wherein the push rod (234) is inserted into the movable hole (233).

7. A three-layer co-extrusion blow molding die head according to claim 4, characterized in that: A placement block (260) is installed on the outside of the outer bracket (220), a placement groove (221) is provided in the placement block (260), the control rod (245) is located in the placement space (261), a push rod (262) is provided in the placement space (261), the push rod (262) is configured as a cylinder, and the front end of the push rod (262) is installed with the control rod (245).

8. A three-layer co-extrusion blow molding die head according to claim 2, characterized in that: The number of the cutting blades (230) is five, and the five cutting blades (230) are arranged in a circular array with the discharge port (150) as the center.

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